Dr kanchana venkatesan
@enggkanchchem@ssiet.in
professor and Depaartment of chemistry
Sree sastha institute of engineering and Technology
EDUCATION
PhD, MSc,BSc,SET
RESEARCH, TEACHING, or OTHER INTERESTS
Chemistry, Polymers and Plastics, Energy, Environmental Science
Scopus Publications
Scopus Publications
M. Chitra, A. Kistan, V. Kanchana, and A. Jayanthi
World Researchers Associations
In the current study, Cobalt (Co) doped ZnO nanoparticles with different dopant concentrations are prepared using the sol-gel process. All the synthesized samples are characterised using a variety of instrumentation methods including XRD, FT-IR, UV-vis absorption spectroscopy, FE-SEM, EDAX, HRTEM and XPS. The XRD measurements revealed the crystallite sizes of the fabricated samples are reduced by increasing cobalt concentrations. The various functional groups present in the doped materials are identified using FT-IR spectra. According to the UV-vis absorption study, as Co dopant concentration rises, the energy band gap narrows down in comparison to pure ZnO. According to an FESEM image, Co doping in ZnO causes a shift in the morphology of the material, making for structures that resemble flowers almost exactly. The various elemental compositions are evaluated using EDAX. The results of analyses employing high-resonance transmission electron microscopy show that the two co-doped ZnO crystallites combine to produce spherical structures with a mean size of 16 nm. This is consistent with the crystallite size predicted by Scherrer's formula. According to the results of the XPS analysis, the Co ion was integrated into the ZnO lattice in a Co2+ oxidised form. The 0.3M Cobalt doped sample showed improved photocatalytic reaction efficiency of methylene blue. As the Co doping concentrations increased, the photocatalytic reaction's efficiency also increased.
V. Kanchana, L. Mayavan, A. Kistan, and S. Mohan
Rasayan Journal of Chemistry
The preparation of Chalcones and Pyrazoline derivatives from different aromatic ketones and substituted aldehydes is detailed. Chalcones were produced by reacting aldehydes with substituted aromatic ketones, such as acetophenones, in the Claisen-Schmidt condensation reaction. Cyclohexenone derivatives are produced when ethyl aceto aromatic ketones undergo base-catalyzed cyclo-condensation to Chalcones under microwave radiation. The synthesized compounds are characterized using spectrum techniques from 1H NMR, 13C NMR, and IR. These are examined for their antioxidant qualities as well as their antibacterial action against Staphylococcus aureus, Escherichia coli, Aspergillus niger, and Aspergillus flavus.
Kistan, V. Kanchana, S. Mohan, and M. Chitra
Rasayan Journal of Chemistry
The motivation behind this study is to stress the worth of green amalgamation in the development of nanomaterials. Regarding this declaration, we said that we have examined the morphological, optical, underlying, and photocatalytic color debasement exercises of the incorporated ZrO2 nanoparticles as well as their biosynthesis by means of a response intervened by mythical serpent organic product bloom separate. UV-noticeable spectroscopy was utilized to identify a huge absorbance top at 360 nm. The utilization of SEM affirmed that the nanoparticles, which had a typical size of 17.5 nm, were circular in shape. The nanoparticles' zirconium (70.88%) and oxygen (29.12%) contents were checked utilizing energy-dispersive X-beam examination. The nanoparticles' X-beam powder diffraction (XRD) spectra demonstrated their crystallinity. While the information from HR-TEM shows particles that are 33.75 nm in size. When the photocatalytic movement of ZrO2 NPs was researched, Methyl Orange showed 54.2 % debasement following 120 minutes of UV openness and 68.50 % corruption following an hour and a half of UV openness, individually. This fresh-out of the plastic bio-ZrO2 nanoparticle was utilized to study the photocatalytic breakdown of methyl orange when presented with apparent light. The cationic color was separated by the engineered bio-ZrO2 shortly with 91.8 % corruption ability.
A. Kistan, V. Kanchana, C. Esther Jeyanthi, and K. Uma
Rasayan Journal of Chemistry
Using a microwave method, six distinct Cyanopyridine derivatives (1a–1f) are freshly synthesized with a high yield. These derivatives were characterized by MS-(ESI) 13 C-NMR, 1 H-NMR, IR spectral data, melting point analysis, and tried for their antibacterial action against Salmonella typhi, Staphylococcus aureus, Bacillus subtilis
V. Kanchana, P. Manoj Kumar, P. Suresh Kumar, I. Kathir, R. Thirumalai, D. Priya, R. Puviarasi, and M. Mohan Prasad
Elsevier BV
Kistan Andiyappan and V. Kanchana
Asian Journal of Chemistry
The chromium(VI) ions present in the tannery waste was efficiently remove by using silver-alumina impregnated maghemite/magnetite nanocomposites as adsorbents. The as-synthesized adsorbents were characterized by XRD, SEM-EDAX, HR-TEM and FT-IR techniques. The adsorption process was found to be pH, time, dosage of adsorbent and temperature dependent. The adsorption data appropriate well with the pseudo-first-order kinetics, pseudo-second-order kinetics Langmuir and Freundlich isotherms. Among the two synthesized nanoabsorbents, the silver-alumina impregnated magnetite (SAMG) nanocomposite was found to be most effective absorbent, and its maximum chromium removal efficiency was achieved to be 98.81% within 2 h at a pH of 3.0 and at dosage of 0.5 g/L.
A. Kistan, V. Kanchana, E. Parthiban, S. Vadivel, and B. Sridhar
Elsevier BV
A. Kistan, A. Premkumar, and V. Kanchana
Asian Journal of Chemistry
Tannery wastewaters are exceedingly complex and characterized by high contents of organic, inorganic and nitrogenous compounds, chromium, sulfides, suspended solids and dissolved substances. Treatment of tannery wastewater was carried out by using activated carbon modified metal chlorides approaches. Effluent from an existing tannery was used as the test medium. The characteristics of the influent and effluent after the chemical treatment were determined. Modified activated carbon mixed with clarified tannery effluent then the various constituents of the effluent were re-investigated. The results indicated a very good deduction of physico-chemical parameters and heavy metals such as chromium were gradually reduced with the introduction of 100-500 mg/L of activated carbon metal chlorides, including CaCl2, which were 41% (EC), 76% (BOD), 47% (COD) (72%) (TDS), 87% (total hardness), 45% (chlorides), 63% (sulphate), 58% (nitrates), 70% (Cr), 32% (surfactants).
S Jagannathan, A Shanmuga Sundaram, V Kanchana, and R Rajesh
IOP Publishing
Abstract In this study, the investigation on thermal property and characteristic analysis of Poly Ethylene Glycol (PEGs) material by varying the molecular weights is examined. In this context, the study on thermal energy material storage is explored by using the different techniques such as Differential Scanning Calorimetry (DSC) for persistent heating rate and Thermal Gravity Analysis (TGA) for determining the amount of change of mass of the material in addition to the function of increasing temperature. Subsequently, the characterization of PEGs with different molecular weight is carried out to explore the property and insight of the material by using the Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) by examining the surface topology, crystallography in addition to this the X-Ray Diffraction (XRD) techniques for catch a glimpse of the crystal structure is studied. As an outcome, in the DSC techniques the results made known when the molecular weight increases, correspondingly the melting temperature and solidification temperature similarly increases however, the heat of fusion during the freezing cycle increases. In the TGA techniques, similarly specified increases in the volume of PEG with different molecular weight has resulted in an increase in the temperature. Subsequently, in the characterization of the PEGs, the SEM has shown an enormous amount of insignificant sphere-shaped crystal-like structures which are joined together and impinging on their neighbour’s which paved the way for the formation of a multi-layered lamellar structure in due course activated rise in the solidification temperature in its molecular weight. Henceforth, from the analytical studies, it’s been evident that the molecular weight greatly influences the mechanical and thermal properties of PEGs. In this concern, the PEGs blends are a potential benefit to replace pure components.
Thandapani Gomathi, K. Rajeshwari, V. Kanchana, P. N. Sudha, and K. Parthasarathy
Springer International Publishing
A. Kistan, V. Kanchana, L. Sakayasheela, J. Sumathi, A. Premkumar, A. Selvam, and Thaminum Ansari A
Oriental Scientific Publishing Company
The photo-catalytic activity of TiO2 catalyst is very much useful to removal of color from dye industry effluent from tanneries, textile industry, and Ink factory. The Novelty of this study, we have found on a very simple method to compare the photocatalytic activity of titanium dioxide for the different concentration of two different Organic dyes (Methyl Orange and Methyl Red) which were not compared in the past studies. This method can be carried out in a normal chemical laboratory. and easy way with limited use of chemicals and simple lab equipment’s. Dye solutions having pigments with high photocatalytic activity lose their color within several minutes of UV-Visible radiation exposure (optical windows 160W (Hg lamp medium pressure)) whereas, dye solutions having UV-stable TiO2 would not degrade within several hours of radiation exposure. For both dyes the color started fading quickly when the light radiation was passed continuously for a long time (15 to 120 minutes).It was also found that concentration of both dyes decreased, with time or the degradation increased. The effect of varying the dye concentration increases with degradation rate decreases. The rate constant value undergoes a marginal decreases at pH = 4.2 when the Methyl Orange dye concentration was increased. The degradation measurements were carried out using Shimadzu UV-Visible 1601 spectrometer in the photon energy range of wave length 200 to 700 nm aid of glass cell (made of Quartz) with 10mm optical path length.