Catalysis & Nanomaterials Research Laboratory

Chennai, India

Catalysis & Nanomaterials Research Laboratory

Chennai, India
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Ramalingam R.J.,King Saud University | Vijaya J.,Catalysis & Nanomaterials Research Laboratory | Al-Lohedan H.A.,King Saud University | Munusamy M.A.,King Saud University
Journal of Ovonic Research | Year: 2017

Zinc oxide and Ga-doped ZnO nanowires and nanorods are synthesized on various substrate like Fluorine doped tin oxide glass plate, SiO2 coated Silicon substrate and aluminum nitride coated silicon substrates. The coating process carried out using zinc oxide sol-gel solution. The synthesized material was characterized using XRD (X-ray diffraction), FE-SEM (Field emission scanning electron microscopy), photoluminescence spectroscopy and electrical conductive gas sensor measurements. The fine nanowires formation on FTO plants are clearly seen in FE-SEM results. The ZnO nanorods and Ga-doped ZnO forms nanodisk structures on AlN coated Si substrate. The synthesized doped and undoped ZnO coated various substrate tested for its electrical conductivity measurements under flow of hydrogen gas sensor applications. The electrical property of the as synthesized material was analyzed by I-V characterization. © 2017, Virtual Institute of Physics of the Foundation Horia Hulubei. All rights reserved.


Narayanan S.,Catalysis & Nanomaterials Research Laboratory | Narayanan S.,Indian Institute of Technology Madras | Judith Vijaya J.,Catalysis & Nanomaterials Research Laboratory | Sivasanker S.,Indian Institute of Technology Madras | And 5 more authors.
Reaction Kinetics, Mechanisms and Catalysis | Year: 2017

The catalytic activity of hierarchical ZSM-5 zeolites was investigated in the polyols (sorbitol and xylitol) to hydrocarbons conversion in a fixed bed reactor under atmospheric pressure by altering different parameters. A lower sorbitol and xylitol conversion was achieved at the reaction temperature of 375 °C, whereas a higher value of 92.33 and 88.19% sorbitol conversion, 95.58 and 92.32% xylitol conversion was obtained when the reaction temperature was further elevated to 425 °C for ZSM-5-WS(28) and ZSM-5-WOS(28) catalysts. Other important parameters, such as substrate concentration, weight hourly space velocity (WHSV) and Si/Al ratio strongly influenced the polyols to hydrocarbons conversion reaction. The optimal conditions are substrate concentration (sorbitol/xylitol) of 15%, WHSV of 1.0 h−1, reaction temperature of 425 °C. In addition to that, the recycling performances of the ZSM-5 catalysts were carried out for four runs and the catalysts were showed better recycling performance and stability. © 2017 Akadémiai Kiadó, Budapest, Hungary


PubMed | Vellore Institute of Technology, University of South Africa, Catalysis & Nanomaterials Research Laboratory, King Saud University and University of Bahrain
Type: | Journal: Journal of photochemistry and photobiology. B, Biology | Year: 2016

The present work describes the successful synthesize of spinel magnetic ferrite Mn

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