Currently Published Papers in Green Chemistry

Studies on Removal of Malachite Green Dye from Aqueous Solution Using Activated Carbon Prepared From Wood Apple Rind by Chemical Activation Method

M. Anu, C. Premalatha and R. Malarvizhi,DOI: 10.24214/IJGHC/GC/8/1 /01829.

The purpose of this study is preparation and characterization of activated carbon using wood apple rind waste biomass by using two different acids like sulphuric acid and phosphoric acid. A series of experiments were conducted in a batch mode system to evaluate the capacity of the adsorbent by changing the variables .i.e. initial pH, initial dye concentration and contact time. The FT-IR analysis of the activated carbon depicts the presence of various functional groups present on it. The isotherm data were fitted with Langmuir and Freundlich models. The kinetic data were fitted with pseudo first order and pseudo second order kinetic models. The pH of the dye solution plays a major role in the adsorption process and it is the most important factor compared to all other factors that affect the adsorption process.

Synthesis, Characterisation and Investigation of Antibacterial Activity of Herb Incorporated
Collagen - Silver (I) Oxide Nanocomposites

S.Kothai and T.Sobana Premlatha,DOI: 10.24214/IJGHC/GC/8/1 /01017

Bionanocomposites from biopolymers and inorganic nanoparticles are of great interest for various biomedical applications. The present study focussed on the synthesis of collagen-silver (I) oxide nanocomposites incorporated with three different medicinal herbs. The synthesised bio nanocomposites were characterised by UV-Vis, FTIR, FESEM analysis techniques. The FESEM study showed that the particle size of composites were found to be in the range of 50 to 100 nm. The antibacterial study of the composites were carried out by well diffusion method and they showed excellent activity against   S.aureus and E.coli bacterial strains.

An Overview of Reactivity and Biological Activity of Hypercoordinated Organosilicon Compounds – A Green Approach

Dr. Priya Duggal

The chemistry of silicon is largely that of four coordinated compounds but many stable compounds containing five and six coordinated silicon are known. Hypercoordinated silicon compounds attract interest from both the structural and reactivity point of view. The isolation of such compounds allows detailed insight into mechanistic pathways of nucleophilic substitution at silicon. On the other hand compounds based on such synthons exhibit interesting properties as electronic materials.  Apart from the rich chemistry of these penta and/or hexacoordinate silicon compounds, it has been found that these species are relatively cheap, have low toxicity and are environmental friendly reagents. Therefore much of the research efforts, recently have been directed towards their synthesis, reactivity, structural investigations and biological activity of such compounds. The present paper deals with the overview of reactivity and biological activity of some penta and hexa-coordinated silicon compounds.

Acid activated palygorskite: an efficient solid acid catalyst for alkylation reactions - a comparative study

DOI: 10.24214/IJGHC/GC/7/4 /94452.

Dhanya Balan A P and Pushpaletha P

A mild and efficient solid acid catalysts were prepared from natural palygorskite collected from Karnataka and Hyderabad and compare their catalytic activities.  Modification technique used for the preparation of the catalysts are acid activation. During acid activation exchangeable cations are replaced by H+ ions and a part of octahedral cations are dissolving and thus creating new acid sites in the crystal. The catalytic performances of these catalysts were investigated by using the alkylation reaction. Alkylation reaction was done by treating benzene, biphenyl, naphthalene, anisole, p-Xylene and toluene with benzyl chloride in liquid phase medium. Physico chemical properties were characterized by XRD, SEM and NH3-TPD measurements.

Molecular dynamics simulation of renin in aqueous environment

DOI: 10.24214/IJGHC/GC/7/4 /93843

Abhik Chatterjee,Uttam Kumar Mondal, Pranab Ghosh, Asim Kumar Bothra,Biswajit Das

Renin is a hormone that controls many physiological functions in our body. Secretion of renin occurs from the Juxtaglomerular cell of the kidney. It activates the renin-angiotensin system (RAS) producing the angiotensin peptides which manage blood pressure, cell growth, apoptosis and electrolyte balanced. In this paper, molecular dynamics simulation of renin in aqueous environment has been considered. Molecular dynamics simulation has become an indispensable method for understanding the structure and biological functions of proteins. The following parameters radius of gyration, root mean square deviation, root mean square fluctuation was monitored.  It is seen from the analysis that elasticity exists in the protein and it does not act as a rigid body. Chain B is more fluctuating than chain A.