Synthesis of fibrous silica tantalum (FSTa) for photooxidative desulphurization | Zendy

M.N.S. Rahim | Zendy; Aishah Abdul Jalil | Zendy; C.N.C. Hitam | Zendy

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Synthesis of fibrous silica tantalum (FSTa) for photooxidative desulphurization

Author(s) -

M.N.S. Rahim,

Aishah Abdul Jalil,

C.N.C. Hitam

Publication year - 2020

Publication title -

iop conference series materials science and engineering

Language(s) - English

Resource type - Journals

eISSN - 1757-899X

pISSN - 1757-8981

DOI - 10.1088/1757-899x/808/1/012019

Subject(s) - tantalum , photocatalysis , materials science , dibenzothiophene , diffuse reflectance infrared fourier transform , scanning electron microscope , hydrothermal circulation , catalysis , chemical engineering , oxide , dispersion (optics) , nuclear chemistry , sulfur , composite material , metallurgy , chemistry , organic chemistry , optics , engineering , physics

The photooxidative desulphurization (PODS) of dibenzothiophene (DBT) was examined under visible light using fibrous silica tantalum (FSTa), tantalum oxide doped fibrous silica (Ta/KCC-1) and commercial tantalum oxide (Ta 2 O 5 ). FSTa was synthetized using hydrothermal method, while Ta/KCC-1 was obtained via a wet impregnation method. The catalysts were examined by field emission scanning electron microscopy (FESEM), X-ray Diffraction (XRD) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). It was shown that the FSTa possesses the highest photocatalytic performance (70.2%), due to its fibrous structure, well-dispersion of Ta, as well as its narrower band gap. These traits impact on the photocatalysis by promoting the deposition of the DBT on the catalyst, allowing the efficient transfer of charge carrier and preventing the electron-hole recombination.

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