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Santhoshini Priya Thomas,Hameed Hussain Ahmed Mansoor,Monicka Kullappan,Vadivel Sethumathavan,Balasubramanian Natesan 한국섬유공학회 2019 Fibers and polymers Vol.20 No.7
In recent days, semiconductor photocatalysis for the advanced water treatment of organic contaminants has beenconsidered as an efficient and attractive technology. This papers deals with the synthesis, characterization, and study of zetapotential effect of chitosan doped cerium oxide beads (CCB) for the photocatalytic decolorization of cationic dye, methyleneblue (MB) under visible light irradiation. The CCB were successfully synthesized through sol-gel method and furthercharacterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electronmicroscopy (SEM). The SEM images show that cerium oxide nanoparticles were profoundly embedded on the chitosanmaterial. CCB exhibited higher photocatalytic activity with 97.75 % after 210 min of decolorization. Decolorization of MBusing CCB was analyzed at different intervals of time under visible light irradiation using UV-Vis spectroscopy. The rate ofMB decolorization under visible light irradiation follows the pseudo first order kinetics using Langmuir-Hinshelwood model. Zeta potential of CCB were analyzed for aqueous solutions of chitosan dispersion over a pH range of 2 to 8.
Kavitha Nagarasampatti Palani,Nithya Ramasamy,Kamalakannan Vasantha Palaniappan,허윤석,Balasubramanian Natesan 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.76 No.-
This work focus to alleviate the fouling in Membrane bioreactor (MBR) by integrating electrooxidation,adsorptive cake, bio-film carriers and ozonation referred as Integrated Moving Bed Bioreactor (IMBBR). The total organic carbon (TOC), Chemical Oxygen Demand (COD) and Total Dissolved Solids (TDS)removal were observed as above 95%, 95% and 70% at 300 kPa with theflux increase in 35%. The numericalmodel was developed which proved less fouling which was in agreement with Scanning electronmicroscopy (SEM) and Liquid Chromatography and Mass Spectroscopy (LCMS). This study showed lessenergy consumption without the problem offilamentous bulking.
Muruganantham Rethinasabapathy,강성민,Yuvaraj Haldorai,Narendranath Jonna,Manokaran Jankiraman,이고운,장성찬,Balasubramanian Natesan,노창현,허윤석 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.69 No.-
N-doped graphene supported quaternary electrocatalyst (PtRuFeCo/NG) was synthesized and evaluated for potential oxygen reduction (ORR) and methanol oxidation reaction (MOR) in fuel cells. The catalyst exhibited excellent MOR (strong CO tolerance, lower onset potential), ORR (four electron transfer) activities and delivered maximum power densities of 778 and 122 mW cm−2 with direct methanol and proton exchange membrane fuel cells, respectively. The N-doping and synergistic effects of alloying low-cost Fe and Co with Pt and Ru makes PtRuFeCo/NG as excellent bifunctional catalyst that greatly reduces the processing cost of fuel cell which is the major problem facing the fuel cell industry.
A study on novel coupled membrane bioreactor with electro oxidation for biofouling reduction
Kamalakannan Vasanthapalaniapp,Kavitha Palani,Shanmuga Sundar Saravanabhavan,Narendranath Jonna,Maharaja Pounsamy,Kannan Natarajan,Yun Suk Huh,Balasubramanian Natesan 대한환경공학회 2021 Environmental Engineering Research Vol.26 No.4
Lead is the most globally bountiful harmful substantial component in nature. Its utilization can be followed to verifiable occasions. The current work archives the combination, portrayal, and utilization of bentonite/chitosan/NiFe₂O₄ ternary novel nanocomposite. Nanostructured nickel ferrite was joined with chitosan and bentonite to frame a novel ternary nanocomposite. The nanocomposite was portrayed by FT-IR, powder XRD, VSM, and TEM investigation. All the logical outcomes affirm the fruitful arrangement of ternary composite. The as-blended nanomaterial was applied as nanoadsorbent for the evacuation of lead (II) from water. The ideal composite portion was 50㎎/100㎖ was seen as profoundly powerful for the evacuation of 82% Pb (II) particles from 200 ppm watery arrangement. This ferromagnetic, minimal effort, the eco-accommodating nanocomposite may end up being helpful for the expulsion of lead from watery arrangement at the mechanical level.
Saravanabhavan, Shanmuga Sundar,Rethinasabapathy, Muruganantham,Zsolt, Sarang,Kalambettu, Aravind Bhat,Elumalai, Sundaravadivel,Janakiraman, Manokaran,Huh, Yun Suk,Natesan, Balasubramanian Elsevier 2019 Materials science & engineering. C, Materials for Vol.99 No.-
<P><B>Abstract</B></P> <P>Presently, quite a lot of research that are being carried out to find a potential cure for cancer and many had made to clinical trial stage as well. In the present study, we focus on use of a novel graphene oxide functionalized chitosan nanoparticle targeting Saos-2 and MG-63 osteosarcoma cells. The graphene oxide chitosan nanoparticles were loaded with siRNA, studied for <I>in vitro</I> release with varying concentration & pH, and fitted to peppas model. MTT & ROS assay was used to evaluate biocompatibility of carrier and qPCR to study the inflammatory responses in particular checking gene expression of IL-6, TGF-ß, TNF-α in both RAW 264.7 and bone marrow derived macrophages. The results of study showed that release of siRNA were in a controlled fashion and effective at acidic pH that prevails on tumor site. The material was biocompatible and effective in case of Saos-2 osteosarcoma cells with a viability of 0.4 ± 0.43 and 0.49 ± 0.53 in case of MG-63 cells when treated with highest concentration of 100 μl siRNA compared to untreated cells that were in range of 0.64 ± 0.67 in Saos-2 and 0.61 ± 0.63 in MG-63 cells. The results of expression of inflammatory cytokines IL-6, TGF-β & TNF-α showed negligible amount compared to control group serving the purpose of an effective carrier targeting tumor cells.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Graphene oxide functionalized chitosan nanoparticle with siRNA targeting <I>Saos-2</I> and <I>MG-63</I> cells exhibited a controlled release. </LI> <LI> Effective release of siRNA on cancer cells and destruction of the same. </LI> <LI> No inflammation observed when treated with RAW and Bone Marrow derived macrophages derived from mice models. </LI> <LI> Inflammatory response was less compared to the control groups and under testing <I>in vivo</I> on mice models </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Rethinasabapathy, Muruganantham,Kang, Sung-Min,Haldorai, Yuvaraj,Jonna, Narendranath,Jankiraman, Manokaran,Lee, Go-Woon,Jang, Sung-Chan,Natesan, Balasubramanian,Roh, Changhyun,Huh, Yun Suk Elsevier 2019 Journal of industrial and engineering chemistry Vol.69 No.-
<P><B>Abstract</B></P> <P>N-doped graphene supported quaternary electrocatalyst (PtRuFeCo/NG) was synthesized and evaluated for potential oxygen reduction (ORR) and methanol oxidation reaction (MOR) in fuel cells. The catalyst exhibited excellent MOR (strong CO tolerance, lower onset potential), ORR (four electron transfer) activities and delivered maximum power densities of 778 and 122mWcm<SUP>−2</SUP> with direct methanol and proton exchange membrane fuel cells, respectively. The N-doping and synergistic effects of alloying low-cost Fe and Co with Pt and Ru makes PtRuFeCo/NG as excellent bifunctional catalyst that greatly reduces the processing cost of fuel cell which is the major problem facing the fuel cell industry.</P> <P><B>Highlights</B></P> <P> <UL> <LI> First time, a quaternary catalyst is tested as bifunctional catalyst using NG as support. </LI> <LI> Exhibit higher ECSA (91m<SUP>2</SUP> g<SUP>−1</SUP>) and strong tolerance towards CO poisoning. </LI> <LI> Two to three-fold increase in MOR activity than other multi-metallic catalysts. </LI> <LI> Facilitate 4 electron transfer with high current in ORR (6.3mAcm<SUP>−2</SUP>). </LI> <LI> Greatly reduce the cost of the catalyst due to less Pt usage and addition of Fe and Co. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>