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Your search keyword '"Mohammed Jasim Uddin"' showing total 2 results
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2 results on '"Mohammed Jasim Uddin"'

1. Tailoring the photocatalytic reaction rate of a nanostructured TiO2 matrix using additional gas phase oxygen

Author

Akhtarul Islam, Mohammed Mastabur Rahman, M. M. Alam, Sreejon Das, Sharmin Rahman Snigda, Cindy A. Morris, Richard D. Gonzalez, Nizam Uddin, Tarik Dickens, Ulrike Diebold, Okenwa I. Okoli, and Mohammed Jasim Uddin

Subjects
Materials science, Nanoporous, Scanning electron microscope, Biomedical Engineering, Pharmaceutical Science, Medicine (miscellaneous), Nanochemistry, Bioengineering, Matrix (chemical analysis), chemistry.chemical_compound, chemistry, Chemical engineering, Photocatalysis, Organic chemistry, Spectroscopy, Methylene blue, Sol-gel
Abstract

Nanostructured TiO2 was synthesized by the sol–gel method. The titania was supported on nanoporous poly (styrene-co-divinylbenzene) (PS). The samples were characterized by several techniques (scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and ultraviolet–visible spectroscopy). Three types of TiO2 samples were prepared using various temperatures and were studied for the photocatalytic degradation of methylene blue. The photocatalytic efficiency of TiO2 was observed to increase by activating the TiO2 surface using nanoporous PS. The photocatalytic performance of the synthesized samples showed a higher performance using molecular O2, which was purged through the reactor.

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2. Preparation of nanostructured TiO2-based photocatalyst by controlling the calcining temperature and pH

Author

Mohammed Mastabur Rahman, Akhtarul Islam, Saidul Hasan, Sheikh Ariful Haque, M. S. A. Amin, and Mohammed Jasim Uddin

Subjects
Materials science, Inorganic chemistry, Biomedical Engineering, Pharmaceutical Science, Medicine (miscellaneous), Nanochemistry, Bioengineering, law.invention, Congo red, chemistry.chemical_compound, chemistry, law, Titanium dioxide, Photocatalysis, Calcination, Spectroscopy, Methylene blue, Sol-gel, Nuclear chemistry
Abstract

Nanostructured TiO2 has been synthesized using one-step sol–gel method and characterized by different characterization techniques (SEM, EDS, XRD, and UV–vis spectroscopy). The photocatalytic degradation of methylene blue (MB) and Congo red (CR) is studied with the synthesized TiO2. The photocatalytic degradation data has been validated using several kinetic models. The TiO2 showed efficient photocatalytic degradation performance on MB and CR. In addition to this, the effect of pH on the photocatalytic degradation has been investigated. The TiO2 showed enhanced photocatalytic performance in basic media than that in neutral or acidic ones.

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