Fabrication of Ag(l) MOF nanoparticles and ultrathin g-C3N4 nanosheets Co-decorated with Ag3VO4: A versatile bifunctional catalyst for efficient green hydrogen production Sripal Reddy Gujjula, Saikumar Manchala, Sampath Karingula, Eun-Bum Cho, Jinheung Kim, Venkatathri Narayanan Fuel, 2026 This study utilizes a quick sonochemical process alongside the sol–gel method to develop a ternary bifunctional nanocomposite material, hybrid Ag-BTC/Ag 3 VO 4 @g-C 3 N 4 (A 2 CN). This material showed strong photo and electrocatalytic abilities for hydrogen (H 2 ) production, demonstrating high activity, durability, and adaptability. The combination of Ag-BTC MOF (AB) with Ag 3 VO 4 (AV) and g-C 3 N 4 (CN) leads to diverse catalytic behaviors in a hierarchical structure, marked by strongly coupled band structures. Ternary nanocomposite (A 2 CN) showed superior activity under photocatalytic and electrocatalytic conditions compared to binary nanocomposites like Ag 3 VO 4 /g-C 3 N 4 (AVCN) and Ag-BTC/g-C 3 N 4 (ABCN). A 2 CN ternary nano catalyst shows the highest H 2 production rate of 629.37 μmol g −1 h −1 under photocatalytic conditions compared to all other fabricated catalysts. The catalyst shows effective performance in electrocatalysis, with a low overpotential (η) of 0.479 V and a Tafel slope of 109 mV dec −1 at a current density of 10 mA cm −2 . The findings suggest that the Ag-BTC/Ag 3 VO 4 @g-C 3 N 4 (A 2 CN) catalyst is a highly adaptable and efficient nano-catalyst for photo- and electrocatalytic H 2 evolution. This study conducts a comprehensive examination of a newly developed, versatile bifunctional catalyst, exploring its potential uses in photo and electrocatalysis.
Synthesis of New Quinazolinone-Based 1,2,3–Triazole Scaffolds as Potent Anticancer Agents: Molecular Docking and ADME Studies Somsole Chandrasekhar, Venkatathri Narayanan, Gutam Madhu, Jonnala Sandhya, Andugula Chandra Mohan, Vundyala Neeraja, Tejeswara Rao Allaka Polycyclic Aromatic Compounds, 2026 Driven by the urgent need for novel anticancer agents capable of overcoming limitations associated with conventional therapies, a new series of quinazolinone derivatives featuring 1,2,3–triazole–acetamide linkers was successfully produced through a copper(I)-catalyzed azide alkyne cycloaddition (CuAAC)-catalyzed cyclocondensation of 3-ethyl-2-(prop-2-yn-1-ylsulfonyl) quinazolin-4(3H)-one with the corresponding 2-azido-N-phenylacetamides. The structures of the synthesized compounds were confirmed through 1H/13C NMR, IR, and HRMS spectroscopic techniques. The novel compounds were evaluated against human lung carcinoma (A549 and NCI-H460), human colorectal carcinoma (HT29 and HCT116), and also hepatocellular liver carcinoma (HepG-2) cell line. Among them, compound 6e demonstrated potent cytotoxicity against A549 (IC50 = 4.80 ± 1.04 μg. mL−1) and HT29 (IC50 = 5.40 ± 0.94 μg. mL−1) cell lines, showing efficacy comparable to doxorubicin (IC50 = 5.04 ± 1.15 and 5.80 ± 0.89 μg. mL−1, respectively). Notably, 6h inhibited the liver cancer cell line HepG-2 with an IC50 of 6.12 ± 0.56 μg. mL−1, when compared to DXN (7.12 ± 1.06 μg. mL−1). Additionally, the molecular modeling approach was employed to correlate the in vitro anticancer cell viability activity well with the in silico study, and the result obtained corroborated that active analogues established several key interactions at positions Arg483(A), Phe478(A), Leu484(A), Ile506(A), Thr458(A), Ser486(A), Asn485(A), and Gly527(A) with the active site of the lung cancer (PDB code: 1X2R). Extending our exploration, an analysis of the ADME-Tox profiling confirmed the safe use of these newly synthesized scaffolds, paving the way for promising therapeutic applications in the field of anticancer therapy. Collectively, these findings underscore the potential of 1,2,3-triazole hybrids, particularly compounds 6e and 6h, as the promising leads for the development of new anticancer agents.
Versatile Bifunctional Ag@g-C3N4/r-GO Catalyst for Efficient Photo- and Electrocatalytic H2 Production Sripal Reddy Gujjula, Ujjwal Pal, Nageshwarrao Chanda, Sampath Karingula, Suman Chirra, Suresh Siliveri, Srinath Goskula, Venkatathri Narayanan Energy and Fuels, 2023 Here, we develop a series of hybrid Ag@g-C3N4/r-GO nanocomposite materials that are highly active, durable, and adaptable for electro- and photocatalytic H2 generation under visible light by employing a rapid and simple sonochemical technique. Multiple catalytic behaviors can be achieved through the strategic introduction of Ag metal into a hierarchical structure consisting of photo- and electroactive two-dimensional (2D) sheets with various band configurations. The outcomes of this work show the development of heterojunctions and show how electro- and photocatalysis were both synergistically improved. The fabricated materials were examined for photocatalytic hydrogen evolution, photoelectrocatalytic (PEC) hydrogen evolution, and electrocatalytic hydrogen evolution reaction (HER). In both photocatalytic conditions at 1.5 AM simulated light irradiation and electrocatalytic conditions, silver-doped composites showed better activity. Among all of the fabricated catalysts, the Ag20%@g-C3N4/r-GO (A20CNG) catalyst displayed the highest apparent quantum yield (AQY) of 1.69 and the highest hydrogen generation rate (954 μmol g–1 h–1). However, in the case of electrocatalysis, Ag15%@g-C3N4/r-GO (A15CNG) showed impressive HER activity with a low overpotential (η) of 0.484 V at 10 mA cm–2 current density with 130.6 mV dec–1 Tafel slope value and also exhibited approximately 16 times more current density than that of g-C3N4/GO (CNGO) at a fixed overpotential in the HER process; this was also supported by the electrochemical active surface area (ECSA). On the basis of the impressive results shown above, the Ag@g-C3N4/r-GO (ACNG) catalyst might be a promising and flexible nanocomposite for photo-, photoelectro-, and electrocatalytic hydrogen evolutions. This is the first study to our knowledge that provides the results of a comprehensive examination into the photo- and electrocatalytic application of an interesting and versatile bifunctional catalyst.
Synthesis, characterization and catalytic activity of titanium dodecylamino phosphate for synthesis of tetrahydrobenzo[a]xanthen-11-ones Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2015
Encapsulation of ibuprofen over mesoporous nanocrystalline hollow silica cuboids Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2013
Influence of template on synthesis of silica nanospherc using CaCO 3 Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2008
Influence of template on synthesis and characterization of novel mesoporous silica nanosphere Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2008
Influence of solvent on preparation of silica nanosphere Journal of the Indian Chemical Society, 2008
Synthesis of hollow microsphere containing of cavity Journal of the Indian Chemical Society, 2008
Influence of pH on hanging mercury drop electrode cyclic voltammetry with aspartic acid in acetate buffers Journal of the Indian Chemical Society, 2008
Effect of synthesis time on yield and particle growth of silica nanosphere Journal of the Indian Chemical Society, 2008
Preparation of silica nanoparticle through coating with octyldecyltrimethoxy silane Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2007
Promoter induced rapid synthesis of AIPO4-5 molecular sieve in non-aqueous media using hexamethyleneimine template Journal of the Indian Chemical Society, 2006
Synthesis and characterization of AIPO4-5RT molecular sieve at room temperature Journal of the Indian Chemical Society, 2006
Synthesis and characterization of VPI-5 molecular sieve from non-aqueous systems Asian Journal of Chemistry, 2006
Synthesis of high alumina ZSM-5 molecular sieve with ethylene diamine as template Journal of the Indian Chemical Society, 2006
Synthesis of high silica content silicoaluminophosphate-5 (SAPO-5) from non-aqueous medium using hexamethyleneimine template Journal of Scientific and Industrial Research, 2005
Synthesis and characterization of a novel extra large pore aluminophosphate molecular sieve, NCL-6 Journal of the Indian Chemical Society, 2005
Synthesis and characterization of a novel lamellar type aluminosilicate molecular sieves, NCL-5 Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2004
Synthesis and characterization of a novel composite macroporous titanoaluminophosphate molecular sieve, NCL-9 Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2004
Catalytic and electrocatalytic oxidation of toluene over vanadium aluminophosphate molecular sieves: VAPO-5 using H2O2 and t-butyl hydroperoxide as oxidant Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2004
Synthesis and characterization of CoAlPO4-5 and CoAlPO 4-31 molecular sieves Indian Journal of Chemical Technology, 2004
Silicoaluminophosphate molecular sieve SAPO-41: Synthesis, characterization and alkylation of toluene with alcohol Journal of the Indian Institute of Science, 2004
Synthesis, characterization and catalytic properties of SAPO-11, -31 and -41 molecular sieves Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2004
Efficient chemoselective liquid phase acylation of amines, alcohols and bifunctional compounds over ZSM-35 Indian Journal of Chemistry Section B Organic and Medicinal Chemistry, 2004
Synthesis and characterization of SAPO-35 from non-aqueous systems with different silicon content Indian Journal of Chemical Technology, 2004
Influence of various parameters on synthesis of AlPO4-5 molecular sieve using hexamethyleneimine template Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2004
Synthesis and characterization of AlPO4-5 from aqueous and non-aqueous systems using hexamethyleneimine template Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2003
Synthesis of a novel lamellar aluminophosphate AlPO4-L Journal of the Indian Chemical Society, 2003
An efficient liquid phase mono acylation of alcohols, diacylation and dimethoxylation of aldehydes over ZSM-35 Indian Journal of Chemical Technology, 2003
Studies on vanadium incorporation in AFI type molecular sieves Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2003
Synthesis and characterization of AlPO4-n molecular sieves from hexamethyleneimine template Indian Journal of Chemistry Section A Inorganic Physical Theoretical and Analytical Chemistry, 2002
Synthesis of SAPO-35 in non-aqueous gels N. Venkatathri, S. G. Hegde, P. R. Rajamohanan, S. Sivasanker Journal of the Chemical Society Faraday Transactions, 1997
