Mayra Angelica Alvarez Lemus

Scopus Publications

Sessile culture as a strategy to enhance the production of emulsifying exopolysaccharides by Glutamicibacter sp. XHA18
Luis Herrera-Candelario, Susana De la Rosa-García, Eugenia Zarza, Karina Guillen-Navarro, Mayra A. Alvarez-Lemus, Sergio Gómez-Cornelio
International Biodeterioration and Biodegradation, 2026
Pristine environments harbor diverse microbial communities with unique and underexplored metabolic capabilities, including the production of exopolysaccharides (EPS) with bioemulsifying properties. These polymers have increasing biotechnological relevance in food, pharmaceutical, and environmental sectors. This study evaluated the effect of two contrasting growth modes—sessile and planktonic—on the production and stability of an emulsifying EPS synthesized by the halotolerant strain Glutamicibacter sp. XHA18, isolated from a pristine cenote in the Yucatan Peninsula, Mexico. Emulsifying activity and 24-h stability were assessed using the emulsification index (EI 24 ), while physicochemical parameters such as carbon and nitrogen sources, pH, agitation, and salinity were optimized in both culture systems. EPS extraction and purification protocols were designed to recovery both high- and low-molecular-weight fractions. The purified EPS was characterized by FTIR, UV–Vis spectroscopy, SEM-EDS, and zeta potential analysis. Sessile cultivation promoted earlier and higher emulsifying activity (EI 24 = 62.09 % at 24 h), whereas planktonic culture required 96 h to reach comparable levels (EI 24 = 60.09 %). In both systems, dextrose and alkaline pH significantly enhanced EPS production, whereas high salinity impaired its emulsifying performance. EPS yield was higher under sessile conditions (2.8 g/L) than in planktonic culture (1.8 g/L). FTIR and zeta potential analysis confirmed the polysaccharidic nature and negative surface charge of the EPS, supporting its ability to form stable emulsions with various hydrophobic substrates, even under salinity levels of 5–10 %. Toxicity assays with Artemia salina and Cucumis sativus confirmed the low toxicity of the EPS, with only minor effects at elevated concentration. Genomic analysis revealed that strain XHA18 belongs to the genus Glutamicibacter but differs in G + C content and metabolic features from known species, suggesting it may represent a novel taxon. Overall, this study provides new insights into the biosynthesis and functional stability of bioemulsifying EPS under sessile conditions and highlights Glutamicibacter sp. XHA18 as a promising biotechnological resource for industrial and environmental applications. • Sessile cultivation enhances early EPS production and emulsifying activity. • EPS shows emulsifying activity (EI 24 ) across diverse hydrophobic substrates. • Dextrose and alkaline pH enhance EPS yield, while high salinity reduces emulsifying activity. • EPS is no-toxic in Artemia salina and Cucumis sativus bioassays. • Genomic data suggest XHA18 represents a novel Glutamicibacter species.
Antibacterial activity of TiO2, CuO, and CuO/TiO2 nanomaterials and their potential application on construction surfaces
Z. Martínez-Corona, D. S. García-Zaleta, R. López-González, C. García-Mendoza, M. A. Alvarez-Lemus, C. Encarnacion-Gomez, S. A. Gómez-Cornelio
Journal of Materials Science Materials in Engineering, 2025
In the construction sector, diverse microorganisms have the ability to form biofilms on constructed surfaces affecting the health of the inhabitants. In this sense, diverse nanomaterials of titanium oxide (TiO2), copper oxide (CuO), and CuO/TiO2 were synthesized by the sol–gel method, Pechini method, and a mechanical synthesismethod. The influence of the thermal treatment (425–575 °C) on the formation of crystalline phases in the compounds, as well as their antibacterial activity on Escherichia coli and Staphylococcus aureus was investigated. X-ray diffraction technique(XRD) results displayed the formation of anatase, rutile, and tenorite phases on the as-synthesized samples. The Rietveld refinement analysis estimated the composition of phases, as well as the crystal size for each crystalline phase in the specimens (from ~ 16 up to ~ 165 nm). The Fourier Transform Infrared (FTIR) spectroscopy showed the characteristic M–O vibrations of the TiO2 and CuO compounds. No relevant signals of the precursors were detected. RAMAN spectroscopy confirmed the formation of anatase and rutile phases in the TiO2 nanomaterials. Scanning electron microscopy (SEM) micrographs revealed the morphology of the compounds and dynamic light scattering (DLS) and electrophoretic light scattering (ELS) analysis showed the particle sizes (from ~ 225 to ~ 750 nm) with Z-potentials between − 11 mV and − 21 mV. Nitrogen adsorption/desorption isotherms results revealed pore sizes between ~ 0.2 and ~ 12.4 nm as well as surface area values up to ~ 158 m2/g. Finally, the minimum inhibitory concentration (MIC) evaluation revealed that the compounds that CuO-based compounds exhibit good antibacterial activity, with MIC values starting at 0.625 mg/mL, and the CuO/TiO2 sample at 475 °C showed the highest efficacy at 0.312 mg/mL. These results suggest that the as-synthesized compounds could be used as disinfection agents on construction surfaces and in sick buildings, as well as they could to reduce the health risks associated with exposure to bacteria.
Alumina nanoparticles obtained via a glycerol-modified sol-gel route and the assessment of their ecotoxicological potential in Artemia salina and Eisenia foetida in vivo models
Erandy G. Gallegos Martínez, Viridiana W. Velázquez Vázquez, Patricia Quintana Owen, Susana del C. de la Rosa García, Mayra A. Alvarez Lemus
Journal of Sol Gel Science and Technology, 2025
Analysis and Application of UV-LED Photoreactors for Phenol Removal
Betsabé Ildefonso-Ojeda, Macaria Hernández-Chávez, Mayra A. Álvarez-Lemus, Rosendo López-González, José R. Contreras-Bárbara, Karen Roa-Tort, Josué D. Rivera-Fernández, Diego A. Fabila-Bustos
Catalysts, 2025
The development of three types of UV radiation-based photoreactors using light-emitting diodes (LEDs) is presented. In this work, three pattern irradiation arrangements, direct radiation, internal radiation, and external radiation, were tested for deactivation of a typical model contaminant in wastewater under the same conditions. All photoreactors allow the adjustment of optical power and irradiation time and include a sensor for temperature monitoring in the solution. In this case, phenol was used as a model contaminant with TiO2 as a photocatalyst in a batch-type reactor at pH 7. The results showed that the highest degradation efficiency was achieved after 120 min, reaching 97.79% for the internal-radiation photoreactor, followed by 90.17% when the direct-radiation photoreactor was used, and 85.24% for the external-radiation photoreactor. Phenol degradation served as the basis for validating reactor performance, given its persistence and relevance as an indicator in advanced oxidation processes. It was concluded that the arrangement of LEDs in each photoreactor significantly influences phenol degradation under the same reaction conditions.
Medicinal Plants Extract for the Bio-Assisted Synthesis of Ag/AgCl Nanoparticles with Antibacterial Activity
Jorge Luis Torres-López, Stephania Lázaro-Mass, Susana De la Rosa-García, Mayra A. Alvarez-Lemus, Abraham Gómez-Rivera, Rosendo López-González, Carlos Ernesto Lobato-García, Getsemani Morales-Mendoza, Sergio Gómez-Cornelio
Journal of Cluster Science, 2025
Mentoring women in STEM: empowering through social technologies for enhanced inclusivity and professional growth. A case study
Coral J. Pacheco Figueroa, Mayra A. Alvarez Lemus
Frontiers in Education, 2025
The use of social technologies for on-line training of women in STEM (Science Technology Engineering and Mathematics) areas was explored for empowering women. Here, a case study on the implementation of a mentoring program focused on fostering the professional careers of women from the Juarez Autonomous University of Tabasco (UJAT), at the southeast of Mexico is presented. By means of an international initiative from the British Council, 32 participants were trained as mentors and mentees at UJAT, and further matched to accomplish a 3 months mentoring relationship. Throughout the sessions, the participants’ advances in soft skills (assertiveness, networking, leadership, active listening, self-confidence, ability to set SMART objectives, among others) were analyzed, showing how the use of social technologies promoted the professional development of women through empowerment as a strategy for reducing the gender gap in scientific and technological careers in Latin America.
Dopamine stabilized in ultra-nanoreservoirs for controlled delivery in parkinson’s disease
Francisco J. Padilla-Godínez, Tessy López-Goerne, Evelyn Y. Calvillo-Muñoz, Mayra Angélica Álvarez-Lemus, Juan Navarrete-Bolaños, Omar Collazo-Navarrete, Obed R. Lora-Marín, María-Del-Carmen Cárdenas-Aguayo, Myrian Velasco, Magdalena Guerra-Crespo
Nanomedicine, 2025
Aims Parkinson’s disease (PD) is a neurodegenerative disorder caused by the progressive degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to impaired dopamine (DA) signaling and motor control. Intermittent dosing of current DA precursors results in side effects, prompting research into controlled drug release mechanisms for sustained and targeted delivery of DA. Materials & methods In this work, we stabilized DA within a nanostructured silicate matrix (nanoreservoir) using the sol-gel method. We examined the physicochemical properties, kinetics of drug release, and biocompatibility in dopaminergic neurons and fibroblasts. Results The optimized synthesis method allowed for the stabilization of DA by preventing its oxidation. The physicochemical and controlled release analysis showed a direct relationship between the mesoporous structure, interaction of the DA with the matrix, and the release kinetics followed, proving the possibility to modify the rate of release by adjusting the synthesis parameters. Furthermore, the nanoreservoirs were biocompatible with dopaminergic neurons and fibroblasts in vitro. Conclusions The research sets the stage for potential in vivo evaluations and new strategies for managing PD, offering hope for improved treatments based on DA and not derivatives.
Titanium Dioxide 1D Nanostructures as Photocatalysts for Degradation and Removal of Pollutants in Water
Dora María Frías Márquez, José Ángel Méndez González, Rosendo López González, Cinthia García Mendoza, Francisco Javier Tzompantzi Morales, Patricia Quintana Owen, Mayra Angélica Alvarez Lemus
Catalysts, 2024
The oxidation of organic pollutants in water is the most reported application of a Titanium dioxide (TiO2) photocatalyst. During the last decade, photoreduction with TiO2 has also been explored but simultaneous capabilities for unmodified TiO2 have not been reported yet. Here, we reported on the fabrication of TiO2 nanorods using hydrothermal treatment and compared the effect of two different TiO2 powders as the starting material: P-25 and TiO2 sol–gel (N-P25 and N-TiO2, respectively) which were further calcined at 400 °C (N-P25-400 and N-TiO2-400). XPS and XRD analyses confirmed the presence of sodium and hydrogen titanates in N-P25, but also an anatase structure for N-TiO2. The specific surface area of the calcined samples decreased compared to the dried samples. Photocatalytic activity was evaluated using phenol and methyl orange for degradation, whereas 4-nitrophenol was used for photoreduction. Irradiation of the suspension was performed under UV light (λ = 254 nm). The results demonstrated that the nanorods calcined at 400 °C were more photoactive since methyl orange (20 ppm) degradation reached 86% after 2 h, when N-TiO2-400 was used. On the other hand, phenol (20 ppm) was completely degraded by the presence of N-P25-400 after 2 h. Photoreduction of 4-nitrophenol (5 ppm) was achieved by the N-TiO2-400 during the same period. These results demonstrate that the presence of Ti3+ and the source of TiO2 have a significant effect on the photocatalytic activity of TiO2 nanorods. Additionally, the removal of methylene blue (20 ppm) was performed, demonstrating that N-TiO2 exhibited a high adsorption capacity for this dye.
ZnO nanomaterials with enhanced antimicrobial activity obtained by Eichhornia crassipes aqueous extract-mediated synthesis
Rosendo López González, Mirian Hernández Gutiérrez, Ruth Lezama García, Sergio Alberto Gómez Cornelio, Carlos Lobato, Abraham Gómez‐Rivera, Patricia Quintana Owen, Mayra Angélica Alvarez Lemus
Journal of Chemical Technology and Biotechnology, 2024
BACKGROUNDZinc oxide nanoparticles (ZnO NPs) were obtained through precipitation synthesis, using aqueous water hyacinth leaf extract (Eichhornia crassipes) under alkaline conditions. The effect of the extract on the physicochemical and antimicrobial properties of the ZnO was evaluated starting from concentrated extract (labeled as E100) and performing two dilutions of this concentrated extract at 50% and 25% in water (E50, and E25).RESULTSThe FTIR spectra revealed strong peaks at ≈3440 cm−1, corresponding to vibrations from OH stretching, and medium‐intense peaks at 1384 and 1327 cm−1, assigned to CC, COOH and COC vibrations, which are related to the presence of the extract; a weak band at 884 cm−1 and a broad band in the region below 600 cm−1 indicate the presence of ZnO. The hydrodynamic size of the ZnOE100, ZnOE50 and ZnOE25 samples were 202, 244 and 313 nm, respectively. No significant variations on the Eg value were observed. Field emission scanning electron microscopy images showed that the ZnO NPs have triangular‐like shapes and agglomeration of the NPs synthesized for the ZnOE25 sample. The minimum inhibitory concentration (MIC) of the ZnO NPs showed no significant effects related to the concentration the plant extract used.CONCLUSIONSVariations in particle size and zeta potential can be introduced in ZnO by varying the content of the extract; the presence of organic groups from the extract, along with a positive zeta potential value, can promote the bactericide effect of ZnO nanomaterials prepared by bio‐assisted synthesis. © 2024 Society of Chemical Industry (SCI).
Photocatalytic performance of Nd/TiO2 and Nb/TiO2 nanomaterials in the degradation of p-cresol at room temperature
Jesús Eduardo de la Cruz‐de los Santos, David Salvador García‐Zaleta, Cecilia Encarnación‐Gómez, Zurisadai Martínez‐Corona, Rosendo López‐González, Mayra Angélica Álvarez‐Lemus, Carlos Mario Morales‐Bautista, D. Palma‐Ramírez, Armando Reyes‐Montero
Journal of Chemical Technology and Biotechnology, 2024
BACKGROUNDThe degradation of organic pollutants, such as p‐cresol, is a challenge for natural mechanisms, and semiconductors are useful as photocatalysts to restore water quality. This work investigated the effects of neodymium (Nd) and niobium (Nb) doping on the structural and photocatalytic properties of titania (TiO2) under ultraviolet (UV) irradiation.RESULTSX‐ray diffraction (XRD) results displayed the formation of anatase, TiO2(B) and rutile phases on the Nd/TiO2 and Nb/TiO2 compounds. The Rietveld analysis estimated the composition of phases, as well as the crystal size for each crystalline phase in the samples (<43 nm). The crystal sizes and morphology of the powders were observed using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Energy dispersive spectroscopy (EDS) and X‐ray spectroscopy (XPS) analysis confirmed the presence of Nd and Nb dopants in the TiO2‐based photocatalysts. Nitrogen adsorption/desorption isotherms results revealed pore sizes between 5 and 11 nm, as well as surface area values up to ~81 m2 g−1. The diverse compounds showed excellent removal efficiency of p‐cresol under UV light (10–30% faster than commercial TiO2‐P25).CONCLUSIONSThis synthesis method favored the incorporation of Nd and Nb dopants in the TiO2 structure. Nd/TiO2 specimens showed higher photocatalytic response than Nb/TiO2 samples, possibly as a result of the synergic effects between phases [anatase and TiO2(B)], higher surface area values (≤ ~80.47 m2 g−1), as well as the nature of dopant. Photocatalysts with better photocatalytic performance demonstrated good degradation rate after 20 h. © 2024 Society of Chemical Industry (SCI).
Relationship of CaZn2(OH)6·2H2O nanoparticles synthesized by different methods with its antifungal activity
Montserrat Soria-Castro, Patricia Quintana, Susana De la Rosa-García, Stephania Lázaro-Mass, Mayra A. Alvarez-Lemus, Félix Maldonado-Desena, Sergio Gómez-Cornelio
Journal of Materials Science, 2024
Antifungal Activity of ZnO Nanoparticles Synthesized from Eichhornia crassipes Extract for Construction Applications
Rocío Vargas Hernández, Mayra A. Alvarez Lemus, Susana De la Rosa García, Rosendo López González, Patricia Quintana, David García Zaleta, Viridiana Velázquez Vázquez, Sergio Gómez Cornelio
Nanomaterials, 2024
Effect of chitosan on the electrokinetic, spectroscopic, and textural properties of TiO2 nanoparticles
K. Macías-Collado, , L.T. Ballesteros-Rozo, V.W. Velázquez-Vázquez, D.M. Frías-Márquez, R. López-González, M.A. Alvarez-Lemus
Revista Mexicana De Ingeniera Quimica, 2024
Effect of phenol concentration on the photocatalytic performance of ZnO nanoparticles
Rosendo López González, Orbelin de la Fuente, Ruth Lezama García, Melina del Carmen Uribe López, Patricia Quintana Owen, María Carmen Hidalgo López, Mayra Angélica Alvarez Lemus
Journal of Chemical Technology and Biotechnology, 2023
Titanium dioxide nanostructures doped with nickel and its performance in photocatalytic reduction of 4-nitrophenol
Mayra A. Alvarez Lemus, Ariana Lizbeth Jiménez Rodríguez, Cinthia García Mendoza, Ruth Lezama García, David S. García Zaleta, Dora M. Frías Márquez, Patricia Quintana Owen, Rosendo López González
Journal of Chemical Technology and Biotechnology, 2023
High photoactivity of ZrxOy-Bi2O2(CO3) composite materials prepared by one-step synthesis for efficient photodegradation of 4-chlorophenol in water
J.C. Castillo-Rodríguez, F. Tzompantzi, C. Tzompantzi-Flores, M.E. Velásquez-Torres, R. Gómez, C.E. Santolalla-Vargas, M.A. Álvarez Lémus, E. Ramos-Ramírez, G. Del Ángel Montes
Journal of Photochemistry and Photobiology A Chemistry, 2023
One-step synthesis of ZnS/ZnO using HMDA as precursor and active part for high photocatalytic hydrogen production
Cinthia García‐Mendoza, Williams Eduardo Sánchez Rivera, Mayra A Alvárez‐Lemus, Gabriela Jácome‐Acatitla, Dora María Frías Márquez, Rosendo López‐González
Journal of Chemical Technology and Biotechnology, 2022
Photodegradation of 4-chlorophenol using as photocatalyst ZnFe2O4 spinels: influence of the complexing agent in the photocatalytic activity
Diego Hernández‐Acosta, Gabriela Jácome‐Acatitla, Cinthia García‐Mendoza, Mayra Álvarez‐Lemus, Rosendo López‐Gónzalez, Francisco Tzompantzi
Journal of Chemical Technology and Biotechnology, 2022
Antiproliferative effect of 1,10-Phenanthroline coupled to sulfated ZnO nanoparticles in SiHa cervix cancer cell line
Lisbeth Almeida Ramón, Erick N. de la Cruz Hernández, Rosendo López González, María Fernanda Hernández Landero, Patricia Quintana Owen, Cinthia García Mendoza, Getsemani Morales Mendoza, Mayra Angélica Alvarez Lemus
Journal of Sol Gel Science and Technology, 2022
Comparative Effect of Adsorption and Photodegradation on Benzene and Naphthalene Using Bismuth Oxide Modify Graphene Oxide
José M. Osorio Jiménez, Rosendo López González, Cinthia García Mendoza, Ignacio Cuauhtémoc-López, Mayra A. Alvarez Lemus, Getsemani Morales Mendoza
Journal of the Mexican Chemical Society, 2022
Photocatalytic Reduction of 4-Nitrophenol over Bismuth Sulfur/ Titanium Dioxide Heterojunction: Influence of Bismuth Sulfur Content on the Reaction Efficiency
Cinthia GarcÍa-Mendoza, Mayra Angélica Alvarez-Lemus, Rosendo López-González, Dora María Frias Márquez, Gabriela Jácome-Acatitla
Journal of Nano Research, 2022
Platinum-decorated TiO2: One step fast monometallic impregnation and plasma effect on nanoparticles
Rudy Trejo-Tzab, Alejandro Avila-Ortega, Patricia Quintana-Owen, Ricardo Rangel, Mayra Angélica Álvarez-Lemus
Journal of Composites Science, 2022
Albendazole release from silica-chitosan nanospheres. In vitro study on cervix cancer cell lines
Daniela J. Hernández-Castillo, Erick Natividad de la Cruz Hernández, Dora M. Frías Márquez, Richard D. Tilley, Lucy Gloag, Patricia Quintana Owen, Rosendo López González, Mayra A. Alvarez Lemus
Polymers, 2021
Photocatalytic activity of ZnO nanoparticles and the role of the synthesis method on their physical and chemical properties
M.C. Uribe-López, M.C. Hidalgo-López, R. López-González, D.M. Frías-Márquez, G. Núñez-Nogueira, D. Hernández-Castillo, M.A. Alvarez-Lemus
Journal of Photochemistry and Photobiology A Chemistry, 2021
Effect of UV radiation on the structure of graphene oxide in water and its impact on cytotoxicity and As(III) adsorption
Waldo Roberto Gallegos-Pérez, Ana Cecilia Reynosa-Martínez, Claudia Soto-Ortiz, Mayra Angélica Álvarez-Lemus, Joaquín Barroso-Flores, Verónica García Montalvo, Eddie López-Honorato
Chemosphere, 2020
Zero valent iron core-iron oxide shell nanoparticles as small magnetic particle imaging tracers
Lucy Gloag, Milad Mehdipour, Marina Ulanova, Kevin Mariandry, Muhammad Azrhy Nichol, Daniela J. Hernández-Castillo, Jeff Gaudet, Ruirui Qiao, Ji Zhang, Melanie Nelson, Benjamin Thierry, Mayra A. Alvarez-Lemus, Thiam T. Tan, J. Justin Gooding, Nady Braidy, Perminder S. Sachdev, Richard D. Tilley
Chemical Communications, 2020
Photodegradation of 4-chloropehol in aqueous media using LaBO3 (B = Fe, Mn, Co) perovskites: Study of the influence of the transition metal ion in the photocatalytic activity
Gabriela Jácome-Acatitla, Mayra Álvarez-Lemus, Rosendo López-González, Cinthia García-Mendoza, Andrés Sánchez-López, Diego Hernández-Acosta
Journal of Photochemistry and Photobiology A Chemistry, 2020
Effect of the degree of oxidation of graphene oxide on As(III) adsorption
A.C. Reynosa-Martínez, G. Navarro Tovar, W.R. Gallegos, H. Rodríguez-Meléndez, R. Torres-Cadena, G. Mondragón-Solórzano, J. Barroso-Flores, M.A. Alvarez-Lemus, V. García Montalvo, E. López-Honorato
Journal of Hazardous Materials, 2020
One-step nitrogen plasma process for bimetallic impregnation to obtain N-TiO2−X/Au/Ag composite
R Trejo-Tzab, JA Aguilar-Jiménez, P Quintana-Owen, Alejandro Ávila-Ortega, MA Alvarez-Lemus, RA Medina-Esquivel
Nanomaterials and Nanotechnology, 2020
Selective etching of SiO2 nanospheres as reservoirs for pH-sensitive release of cis-diamminedichloroplatinum(II)
Daniela J Hernández‐Castillo, Mayra A Alvarez‐Lemus, Erick N de la Cruz‐Hernández, Rosendo López‐González, Cinthia García Mendoza
Journal of Chemical Technology and Biotechnology, 2019
Synthesis and characterization of ZnO-ZrO2 nanocomposites for photocatalytic degradation and mineralization of phenol
M. C. Uribe López, M. A. Alvarez Lemus, M. C. Hidalgo, R. López González, P. Quintana Owen, S. Oros-Ruiz, S. A. Uribe López, J. Acosta
Journal of Nanomaterials, 2019
Autophagic and apoptotic pathways as targets for chemotherapy in glioblastoma
Cristina Trejo-Solís, Norma Serrano-Garcia, Ángel Escamilla-Ramírez, Rosa Castillo-Rodríguez, Dolores Jimenez-Farfan, Guadalupe Palencia, Minerva Calvillo, Mayra Alvarez-Lemus, Athenea Flores-Nájera, Arturo Cruz-Salgado, Julio Sotelo
International Journal of Molecular Sciences, 2018
In vitro evaluation of apoptotic effect of bis(acetylacetonato-k2 O,O′)(1,10-phenanthroline-k2 N,N′)Zn(II) complex
Cristina Trejo-Solis, Mayra A. Alvarez-Lemus, Dolores Jiménez-Farfán, Isabel Anaya-Rubio, Rosendo López-González, Guadalupe Palencia, Dora M. Frías-Márquez, Gerardo González-García, Carmen Rubio-Osornio, Minerva Calvillo-Velasco, Guadalupe Márquez-Chablé
Chemical Biology and Drug Design, 2017
Effect of surface modification on the bioactivity of sol–gel TiO2-based nanomaterials
Mayra A Alvarez Lemus, Hugo Monroy, Tessy López, Erick N De la Cruz Hernández, Rosendo López-González
Journal of Chemical Technology and Biotechnology, 2016
Combination of Mn oxidation states improves the photocatalytic degradation of phenol with ZnAl LDH materials without a source of O2 in the reaction system
Getsemani Morales-Mendoza, Mayra Alvarez-Lemus, Rosendo López, Francisco Tzompantzi, Rajesh Adhikari, Soo Wohn Lee, Leticia M. Torres-Martínez, Ricardo Gómez
Catalysis Today, 2016
Photocatalytic reduction of Cr(VI) by using stacked ZnS layers of ZnS(en)x complex
Agileo Hernández-Gordillo, C. García-Mendoza, M.A. Alvarez-Lemus, Ricardo Gómez
Journal of Environmental Chemical Engineering, 2015
A method based on infrared detection for determining the moisture content of ceramic plaster materials
E.V. Macias-Melo, K.M. Aguilar-Castro, M.A. Alvarez-Lemus, J.J. Flores-Prieto
ISA Transactions, 2015
An alcohol-free SiO2 sol-gel matrix functionalized with acetic acid as drug reservoir for the controlled release of pentoxifylline
Mayra Angélica Alvarez Lemus, Oscar Javier Ortiz Castañeda, Alma Delia Hernández Pérez, Rosendo López González
Journal of Nanomaterials, 2014
Obtaining of sol-gel ketorolac-silica nanoparticles: Characterization and drug release kinetics
T. M. López Goerne, M. G. López García, G. Rodríguez Grada, I. Ortiz Pérez, E. Gómez López, M. A. Alvarez Lemus
Journal of Nanomaterials, 2013
Nanotecnology and cancer: Applications for the treatment of brain tumors
Archivos De Neurociencias, 2012
Portable system for measuring fluorescence signals of biological tissue
Diego Adrian Fabila, Jose Manuel de la Rosa, Suren Stolik, Edgard Moreno, Judith Dominguez, Sergio Miguel Mercado, Tessy Lopez, Mayra Alvarez, Alfonso Arellano, Rodrigo Mercado, Jose Luis Soto
IEEE Latin America Transactions, 2011
Synthesis, characterization and in vitro cytotoxicity of Pt-TiO2 nanoparticles
T. López, M. Alvarez, R. D. González, M. J. Uddin, J. Bustos, S. Arroyo, A. Sánchez
Adsorption, 2011
Development of a spectrofluorometer with USB interface for in vivo measurements in surgical procedures
DA Fabila, JM de la Rosa, S Stolik, E Moreno, T Lopez, M Alvarez, A Arellano, G de la Rosa, R Mercado, JL Soto
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop Casme 2010, 2010
Study of the stabilization of zinc phthalocyanine in sol-gel TiO2 for photodynamic therapy applications
Tessy Lopez, Ema Ortiz, Mayra Alvarez, Juan Navarrete, Jose A. Odriozola, Fernando Martinez-Ortega, Edgar A. Páez-Mozo, Patricia Escobar, Karla A. Espinoza, Ignacio A. Rivero
Nanomedicine Nanotechnology Biology and Medicine, 2010
Catalytic nanomedicine: A new field in antitumor treatment using supported platinum nanoparticles. In vitro DNA degradation and in vivo tests with C6 animal model on Wistar rats
T. López, F. Figueras, J. Manjarrez, J. Bustos, M. Alvarez, J. Silvestre-Albero, F. Rodríguez-Reinoso, A. Martínez-Ferre, E. Martínez
European Journal of Medicinal Chemistry, 2010
Catalytic nanomedicine: Functionalisation of nanostructured cryptomelane
Tessy López, Emma Ortiz, Mayra Alvarez, Joaquin Manjarrez, Mario Montes, Paloma Navarro, José Antonio Odriozola
Materials Chemistry and Physics, 2010
Release properties and acute biosecurity determination of collagen-polyvinylpyrrolidone loaded in ordered mesoporous silica
Key Engineering Materials, 2009
Photocatalytic degradation of 2,4-dichlorophenoxyacetic acid using nanocrystalline cryptomelane composite catalysts
M. Alvarez Lemus, T. López, S. Recillas, D.M. Frías, M. Montes, J.J. Delgado, M.A. Centeno, J.A. Odriozola
Journal of Molecular Catalysis A Chemical, 2008
Spectroscopic, structural and textural properties of CaO and CaO-SiO2 materials synthesized by sol-gel with different acid catalysts
J. García, T. López, M. Álvarez, D.H. Aguilar, P. Quintana
Journal of Non Crystalline Solids, 2008
Photocatalytic degradation of 2,4-dichlorophenoxyacetic acid over ZrO 2, Cu/ZrO2 and Fe/ZrO2 photocatalysts synthesized by sol gel method
Journal of Nanoscience and Nanotechnology, 2008
Pt/TiO2 brain biocompatible nanoparticles: GBM treatment using the C6 model in Wistar rats
T. López, S. Recillas, P. Guevara, J. Sotelo, M. Alvarez, J.A. Odriozola
Acta Biomaterialia, 2008
2,4-Dichlorophenoxyacetic acid (2,4-D) photodegradation using an Mn+/ZrO2 photocatalyst: XPS, UV-vis, XRD characterization
M. Alvarez, T. López, J.A. Odriozola, M.A. Centeno, M.I. Domínguez, M. Montes, P. Quintana, D.H. Aguilar, R.D. González
Applied Catalysis B Environmental, 2007
Photocatalytic degradation of 2,4-dichlorophenoxiacetic acid and 2,4,6-trichlorophenol with ZrO 2 and Mn/ZrO 2 sol-gel materials
T. López, M. Alvarez, F. Tzompantzi, M. Picquart
Journal of Sol Gel Science and Technology, 2006
ZrO 2 and Cu/ZrO 2 sol-gel materials spectroscopic characterization
T. L�pez, M. Alvarez, R. G�mez, D. H. Aguilar, P. Quintana
Journal of Sol Gel Science and Technology, 2005

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