Sangeetha P

Chemistry

School of Advanced Sciences

Chennai Campus

Ashok Kumar S-K

Department of Chemistry

Vellore Campus

Prashantha Kumar T.K.M

Mandlimath T.R

Revathi S.K

Sahoo S.K.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

RSC Advances

Highly porous carbon material was prepared using coconut spathe (CS) and potassium hydroxide (KOH) as an activating agent under nitrogen atmosphere via pyrolysis method. The pore development was significant at temperature 800 °C and reached maximum BET surface area (1705 m2/g) and maximum pore radius (2 nm). Boehm titration data used to calculate the total acidic sites (40.1 mmol/g) and basic sites (18.62 mmol/g). Adsorption performance of KOH treated activated carbon (KAC) was used for the removal of phenol (P), 2-chlorophenol (2-CP) and 4-chrlophenol (4-CP) from aqueous medium. Adsorption parameters like effect of adsorbent dosage, initial concentration of the adsorbate, contact time, pH and reusability were evaluated for the removal of phenolic compounds. The data reveals that the Langmuir isotherm model and pseudo-second-order kinetics are best fitted and the maximum uptake (qexp) of P, 2-CP and 4-CP were found to be 120, 225 and 275 mg g−1 respectively within 15 min of contact time. The desorption studies were conducted to recover an adsorbed phenolic compounds using 0.05 N sodium hydroxide and it reveals that there is no significant changes even after five times use. Further, to complement the experimental results, the quantum mechanical calculations were done by using the semi-empirical PM6 method using the computational code Gaussian 09W. © 2018 Elsevier Ltd

Journal of Environmental Chemical Engineering

A quick removal of toxic phenolic compounds using porous carbon prepared from renewable biomass coconut spathe and exploration of new source for porous carbon materials

The antibacterial activity of ZnO nanoparticles (nano ZnO) on various microorganisms has been investigated in this study and acting mechanism is proposed for E. coli a model organism by analyzing the growth, permeability and morphology of the bacterial cells. The experimental results indicated 1 mmoL (81.4 μg) nano ZnO could completely inhibit the growth of 10 7 cfu/mL bacterial cells in liquid Luria-Betrani medium. In the biochemical study, it has been observed that, nano ZnO resulted in the leakage of proteins. Chemiluminescence assay proved the generation of the reactive oxygen species into active state. When the cells of E. coli were exposed to nano ZnO, many pits were observed in bacterial cells by TEM and Fluorescence microscopy and the cells were found to be fragmentary. Released zinc ion from has been monitored by AAS. It suggested that nano ZnO is able to destroy the permeability of the bacterial membranes. Our study demonstrated that nano ZnO damages the structure of bacterial cell membrane and depressed the activity of some membranous enzymes by ROS production which caused E. coli bacteria to die eventually. Copyright © 2011 American Scientific Publishers All rights reserved.

Journal of Biomedical Nanotechnology

Interaction of ZnO Nanoparticles with Microbes—A Physio and Biochemical Assay

Journal of Environmental Science and Health, Part C

Antimicrobial Activity of Gold Nanoparticles and Ionic Gold

Scientific Reports

Stellated Ag-Pt bimetallic nanoparticles: An effective platform for catalytic activity tuning

Preparation and long-term antibacterial activity of TiO2 nanotubes loaded with Ag nanoparticles and Ag ions

Materials Science and Engineering: C

Antimicrobial activity of the metals and metal oxide nanoparticles

Highly efficient performance of activated carbon impregnated with Ag, ZnO and Ag/ZnO nanoparticles as antimicrobial materials

Journal	Data powered by TypesetRSC Advances
Publisher	Data powered by TypesetRoyal Society of Chemistry (RSC)
ISSN	20462069
Open Access	No