Gandhigram Rural Institute, founded in 1956, is situated near Dindigul in Tamil Nadu, India. Dr.T.S.Soundaram and Dr.G.Ramachandran developed the institute. The Gandhigram Rural Institute was founded there in 1956 to carry on Mahatma Gandhi’s ‘Nai Talim’ system of education. In 1976 it was declared as Deemed University, by University Grants Commission , New Delhi, Under Section 3 of UGC Act 1956. It is fully funded by UGC. In 2006 it was renamed Gandhigram Rural Institute as per the guidelines of UGC. Again, as per UGC guidelines, the name of the institute has been changed to Gandhigram Rural Institute in 2009.With devotion to Mahatma Gandhi’s revolutionary concept of ‘Nai Talim’ system of education, Gandhigram Rural Institute has developed academic programmes in Rural Development, Rural Economics and Extension Education, Rural Oriented science, Cooperation, Development Administration, Rural Sociology, English and Communicative Studies, and, Tamil and Indian Languages.The work of the institute invited national attention and the Government of India , on the recommendation of the University Grants Commission, conferred the status of a Deemed University on the institute under Section of the UGC Act of 1956, on 3 August 1976.The institute has developed into a major educational complex, comprising seven faculties, offering in 50 programmes. It awards Doctoral, Master’s and Bachelor’s Degrees, Diplomas and Certificates through its seven academic faculties: Rural Development, Rural Social science, Rural Oriented science, English and Foreign Languages, Tamil, Indian Languages and Rural Arts, Rural Health and Sanitation, and, Agriculture and Animal Husbandry. It has 3000 students and 150 teaching and 250 non-teaching staff.The institute was accredited with Five Star status by NAAC, in February 2002.It was re-accredited with A grade in 2010. Wikipedia.
Chandrasekaran S.,Gandhigram Rural Institute
Solar Energy Materials and Solar Cells | Year: 2013
Economically viable copper oxide nano particles were prepared via a novel simplistic synthesis method using oleic acid as a solvent, surfactant and capping agent with varying reaction temperature (200 °C, 300°C and 400°C) by solvothermal technique to develop a high efficiency solar cell. The influence of calcined temperature on crystalline size, purity, morphology, structural phase transition and stoichiometric formation of copper oxide powders were investigated by using powder X-ray diffraction, Scanning Electron Microscopy and X-ray Photoelectron Spectroscopy (XPS). The band gaps were calculated by optical studies. The luminescence spectra exhibit band to band transition of copper oxide nano particles. From TGA profile the mass reduction was occurred below 300°C. The growth mechanism of Copper oxide nano particles from copper chloride dihydrate with oleic acid (OA) investigated. The maximum overall conversion efficiency of 0.863% has been achieved from I to V characteristic study in favor of copper oxide nano particles calcined at 400°C. © 2012 Elsevier B.V.
Karthik R.,Gandhigram Rural Institute |
Meenakshi S.,Gandhigram Rural Institute
International Journal of Biological Macromolecules | Year: 2014
In the present investigation, the removal of Cr(VI) ions from aqueous solution using cross linked-chitosan-grafted-polyaniline composite (CCGP) was compared with that of chitosan-grafted-polyaniline (CGP) composite. The composites were characterized using FTIR, SEM-EDX, XRD, DSC, and TGA techniques. Batch equilibrium method was used for the optimization of various equilibrium parameters such as pH, contact time, dosage and initial Cr(VI) ion concentration. The removal efficiency by CCGP composite was found to be higher compared to CGP composite in all the studied conditions. The adsorption process was well described by Freundlich isotherm model for both the composites. The maximum adsorption capacity of CGP and CCGP composite for Cr(VI) ions was 165.6. mg/g and 179.2 mg/g at 303 K. Thermodynamic parameters for the adsorption system were calculated and concluded that the nature of sorption was spontaneous and endothermic in nature. The Cr(VI) adsorption kinetic process was well described by pseudo-second-order kinetic model and the sorption process was being controlled by intraparticle diffusion pattern. Desorption and regeneration experiments of CGP and CCGP composites were performed and reused for more than two consecutive cycles. © 2014 Elsevier B.V.
Sophia J.,Gandhigram Rural Institute |
Muralidharan G.,Gandhigram Rural Institute
Sensors and Actuators, B: Chemical | Year: 2014
Silver nanoparticles (NPs) embedded in polyvinyl pyrrolidone (PVP) were synthesized using a simple route for the fabrication of hydrogen peroxide (H2O2) sensor. UV-vis spectroscopy and X-ray diffraction analysis confirmed the presence and crystalline nature of the silver nanoparticles. The morphology of the material was investigated by transmission electron microscopy (TEM). The electrochemical properties were characterized by cyclic voltammetry (CV), chronoamperometry and electrochemical impedance spectroscopy (EIS). The fabricated sensor showed a significant catalytic activity towards H2O2 reduction, attributable to silver nanospheres protected by vinyl polymer. The sensor responds to H 2O2 in a wide linear range and the detection limit was 40 nM which is lower than most of the silver NPs based sensors reported recently. The sensor exhibits good selectivity, reproducibility and long term stability with a swift response time of 2 s. © 2013 Elsevier B.V.
Raj M.A.,Gandhigram Rural Institute |
John S.A.,Gandhigram Rural Institute
Journal of Physical Chemistry C | Year: 2013
We report a simple, facile, and reproducible method for the fabrication of electrochemically reduced graphene oxide (ERGO) films on glassy carbon electrode (GCE) by the self-assembly method. The graphene precursor, graphene oxide (GO), was self-assembled on GCE through a diamine linker which was preassembled on GCE by electrostatic interaction between the positively charged amine and the negatively charged layers of graphene oxide (GO). The oxygen functional groups present on the surface of GO were electrochemically reduced to retain the aromatic backbone of graphene. The attachment of GO followed by its electrochemical reduction was confirmed by ATR-FT-IR spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and scanning electron microscopy (SEM). Raman spectra show that the intensity ratio of D and G bands was increased after the electrochemical reduction of GO. XPS results reveal that the carbon-to-oxygen ratio was increased after the electrochemical reduction of electrostatically assembled GO. Further, Raman and XPS results confirm the removal of oxygen functional groups present on the surface of GO after electrochemical reduction. Impedance spectral studies show that the electron transfer reaction was facile at ERGO modified GCE. Finally, the electrocatalytic activity of ERGO was examined by studying the oxidations of ascorbic acid (AA), dopamine (DA), and uric acid (UA). It enhanced the oxidation currents of AA, DA, and UA when compared to bare GCE. The electrocatalytic activity of the present modified electrode was highly stable. © 2013 American Chemical Society.
Edison T.J.I.,Gandhigram Rural Institute |
Sethuraman M.G.,Gandhigram Rural Institute
Process Biochemistry | Year: 2012
A novel green approach for the synthesis and stabilization of silver nanoparticles (AgNPs) using water extract of Terminalia chebula (T. chebula) fruit under ambient conditions is reported in this article. The instant formation of AgNPs was analyzed by visual observation and UV-visible spectrophotometer. Further the effect of pH on the formation of AgNPs was also studied. The synthesized AgNPs were characterized by FT-IR, XRD, HR-TEM with EDS and DLS with zeta potential. Appearance of brownish yellow color confirmed the formation of AgNPs. In the neutral pH, the stability of AgNPs was found to be high. The stability of AgNPs is due to the high negative values of zeta potential and capping of phytoconstituents present in the T. chebula fruit extract which is evident from zeta potential and FT-IR studies. The XRD and EDS pattern of synthesized AgNPs showed their crystalline structure, with face centered cubic geometry oriented in (1 1 1) plane. HR-TEM and DLS studies revealed that the diameter of stable AgNPs was approximately 25 nm. Moreover the catalytic activity of synthesized AgNPs in the reduction of methylene blue was studied by UV-visible spectrophotometer. The synthesized AgNPs are observed to have a good catalytic activity on the reduction of methylene blue by T. chebula which is confirmed by the decrease in absorbance maximum values of methylene blue with respect to time using UV-visible spectrophotometer and is attributed to the electron relay effect. © 2012 Elsevier Ltd. All rights reserved.