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Cadiam Mohan Babu(칸디암 모한 바부),Rajangam Vinodh(라자감 비노드),Aziz Abidov(아비도프 아지즈),Mei Mei Peng(팽메이메이),Muthiahpillai Palanichamy(무따이 팔라리차미),WangSeogCha(차왕석),Hyun-Tae Jang(장현태) 한국산학기술학회 2015 한국산학기술학회 학술대회 Vol.2015 No.1
Mesoporous Fe2O₃/TiO₂ was synthesized by sol-gel route using pluronic P123 the as structure directing agent. The mesoporous nature of the material was confirmed from low angle X-ray diffraction. The material was supported on reduced graphene oxide and characterized by FT-IR, Raman, XPS, N2 sorption, HR-TEM and SEM. The reduced graphene oxide supported Fe2O₃/TiO₂ nanocomposite was tested for the sorption of both As(V) and As(III) from aqueous solution. The equilibrium adsorption attained within fifteen minutes for both As(III) and As(V). The maximum adsorption capacity for As(V) and As(III) was found to be 99.5 and 77.7 mg/g at pH 6 and 7 respectively. The sorption was found to high in the pH range of 6-7.
Caprolactam Synthesis using Ce-MCM-41Catalysts
Cadiam Mohan Babu,Rajangam Vinodh,Aziz Abidov,Rramaswamy Ravikumar,Mei Mei Peng,Wang Seog Cha,Hyun Tae Jang 보안공학연구지원센터 2016 International Journal of Bio-Science and Bio-Techn Vol.8 No.3
Siliceous MCM-41 was synthesized by hydrothermal method using sodiummetasilicate as a source. Cerium ion incorporated Si-MCM-41 was synthesized by hydrothermal method using Cetyltrimethylammonium bromide as template. 2, 3 and 4 weight percentage of Ceria was loaded over MCM-41 by wet impregnation method. The synthesized catalysts were characterized using FT-IR, DRS-UV-Vis, XRD and SEM techniques. The catalytic activity of the cerium ion incorporated and ceria impregnated MCM-41 was evaluated in the synthesis of caprolactam from cyclohexanone oxime in the liquid phase condition. At high temperature all the catalyst showed high conversion. In that 4 wt.% Ce impregnated Si-MCM-41 produced high conversion (76.2%) and percentage yield (66.4%). The impregnated catalyst may contain more number of cerium present in the pores, so the lewis acid sites will be more and the conversion of cyclohexanone oxime into caprolactam will be high.
Synthesis and Characterization of 1-octyl 2-cyano Acrylate for Wound Healing Applications
Rajangam Vinodh,Cadiam Mohan Babu,Aziz Abidov,Rramaswamy Ravikumar,Muthiahpillai Palanichamy,Eun Young Choi,Hyun Tae Jang 보안공학연구지원센터 2016 International Journal of Bio-Science and Bio-Techn Vol.8 No.1
Cyanoacrylate glues are quick setting materials which rapidly cure to hard, clear glassy resins. Its synthesis too has not been reported in the open literature so far. Synthetic methods, which engage esterification of cyanoacetic acid with a preferred alcohol, polymerization by knoevenagel condensation and successive depolymerization, are applied to the synthesis of lower membered alkyl cyanoacryaltes in which the alkyl groups carry less than 8 carbons. We have synthesized 1-octyl cyanoacetate by a traditional method involving p-toluene sulphonic acid as the catalyst. In the second step, we have attempted the preparation of poly (n-octyl cyanoacrylate) by the reaction of formaldehyde with n-octyl-2-cyanoacetate in the presence of both piperidine and potassium carbonate in the absence of any solvents. Its FTIR spectrum confirmed its functional groups: Its –OH stretching yielded a broad band around 3400 cm-1. The polymer was depolymerized using poly phosphoric acid catalyst under vacuum to obtain the monomer. A simple method of obtaining monomer was also attempted by the reaction of 1-octyl- 2-cyano acetate and diiodomethane in the presence of potassium carbonate. This process directly yields the monomer. The second method looks better than the others, and it can be applied to any type of alcohols.
Preparation and characterization of RGO‑incorporated hypercross‑linked polymers for CO2 capture
Rajangam Vinodh,Cadiam Mohan Babu,Aziz Abidov,Muthiahpillai Palanichamy,Wang Seog Cha,Hyun Tae Jang 한국탄소학회 2019 Carbon Letters Vol.29 No.1
The growing demand for nano-structured composite materials and sustainable processes for next generation CO2 capture technologies has necessitated the need to develop novel and cost-effective synthetic routes for solid CO2 adsorbents based on hypercross-linked polymers (HCPs) and reduced graphene oxide (RGO) microporous sorbent materials with improved physico-chemical properties. The most important selection is modification of the synthesized microporous sorbent materials by the incorporation of RGO, giving rise to composite materials that combine the properties of both. These hybrid materials will be of great potential for carbon capture and storage (CCS) applications, especially for post-combustion CO2 capture, owing to the increase in CO2 capturing efficiency and selectivity to CO2 compared to other flue gases. Herein, we report a facile and effective approach for fabrication of HCPs-supported reduced graphene oxide composites. The microporous HCPs was synthesized using 4,4′-bis(chloromethyl)-1,1′-biphenyl monomer by Friedel–Crafts alkylation. The RGO was prepared by modified Hammers method. The as-synthesized composites were characterized by TEM, SEM, FTIR, TGA and N2 adsorption–desorption isotherm. The HCP/RGO composite showed maximum CO2 adsorption of 5.1 wt% than the HCPs alone at 40 °C and 1 atm.
Rramaswamy Ravikumar,Mei Mei Peng,Aziz Abidov,Cadiam Mohan Babu,Rajangam Vinodh,Muthiahpillai Palanichamy,Eun Young Choi,Hyun-Tae Jang 보안공학연구지원센터 2016 International Journal of Bio-Science and Bio-Techn Vol.8 No.2
For treating the chronic illnesses, the best choice of drug delivery might be the controlled drug delivery systems. Nanoscaled drug delivery systems like nanofibres, nanoparticles are in the advancement of the controlled drug delivery system. Nanofibres are being a good choice due to its advantages like high drug loading and encapsulation efficiency. The present study is concerned with the synthesis of simple electrospunned nanofibres of Chitosan (CHI)/Polyvinyl alcohol (PVA) blended with Hydroxy ethyl cellulose (HEC) which will be preloaded with a model chemotherapeutic agent 5-Fluorouracil (5-FU) before electrospinning. HEC is chosen for its capability of enhancing the nanofiber formation since it is used as the thickening agents in several fields. The various mixture proportions of HEC and PVA blends were tried to form electrospunned fibers and characterized usingFT-IT, SEM, TGA and UV-VIS (for drug release study). The data output strengthening that HEC might be used to get the optimum nanofibre in the CHI/PVA nanofibre preparation which may be useful for controlled releasing of the drugs like 5-FU for treating colo-rectal cancer like chronic illnesses.
RAJANGAMVINODH,장현태,Aziz Abidov,Mei Mei Peng,CADIAM MOHAN BABU,Muthiah Pillai Palanichamy,차왕석 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.32 No.-
In this paper we report a semiconducting porous carbon material for supercapacitor application. Semiconducting carbon material was prepared by two step method. First, hypercross-linked polymers(HCPs) of phloroglucinol and a,a0-dichloro-p-xylene was prepared by a simple Friedel Crafts alkylation,and second, the synthesized microporous HCPs was subjected into carbonization at 700 8C in a heliumatmosphere. The carbonized sample was characterized into cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy in 1 M sodium sulphate aqueous solution forsupercapacitor applications. The specific capacitance of carbonized materials is found to be 86 F g 1 at acurrent density of 0.1 A g 1.
A Novel Route to Synthesize Hypercross-linked Conjugated Polystyrene for CO₂ Sorption
Rajangam Vinodh(라자감 비노드),Aziz Abidov(아비도프 아지즈),Mei Mei Peng(펭메이메이),Cadiam Mohan Babu(칸디암 모한 바부),Muthiahpillai Palanichamy(무따이 팔라리차미),Wang Seog Cha(차왕석),Hyun-Tae Jang(장현태) 한국산학기술학회 2015 한국산학기술학회 학술대회 Vol.2015 No.1
Polystyrene is cross-linked to generate micropores for sorption applications. Herein, we report for the first time, hypercross-linking of polystyrene in the presence of Friedel-Crafts catalyst, FeCl3 without a cross-linker. For comparison, polystyrene was also hypercross-linked with a cross-linker, dimethoxy methane with the same catalyst. The cross-linking and de-hydrogenation of cross-links to quinonoid formation were confirmed by FT-IR and 13C-NMR techniques. The hyper cross-linked polymers (HCPs) were also characterized by TGA, DRS-UV, SEM, BET and CO₂ sorption techniques. All the HCPs showed a maximum of 5 weight % CO₂ sorption at 25 °C and 1 atm. The same polymers could also be applied for the sorption of other air pollutants.