화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.90, 358-370, October, 2020
DOI10.1016/j.jiec.2020.07.037  Export Citation
Highly efficient photocatalytic oxidative desulfurization of dibenzothiophene with sunlight irradiation using green catalyst of Ag@AgBr/Al-SBA-15 derived from natural halloysite
Xuan Nui Pham1, †, Manh B. Nguyen2, Ha Son Ngo1, and Huan V. Doan1, 3, †
  • 1Department of Chemical Engineering, Hanoi University of Mining and Geology, 18 Vien Street, Bac Tu Liem District, Hanoi, Viet Nam, Vietnam
  • 2Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam, Vietnam
  • 3Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TH, UK
E-mail:,
In recent decades, highly efficient deep desulfurization processes have become very necessary to decrease environmental pollution due to sulfur emissions from fuels. Herein, an enhanced photocatalytic desulfurization of a model fuel was investigated under sunlight irradiation using H2O2 as the oxidant and Ag@AgBr loaded mesoporous silica Al-SBA-15 as a catalyst. In this study, the photocatalyst (Ag@AgBr/Al-SBA-15) was synthesized via a chemical deposition using halloysite clay as the silica.aluminum source and characterized by X-ray diffraction, N2 adsorption, scanning electron microscopy, transmission electron microscopy, and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The UV-Vis DRS results revealed that the light absorption expanded to the visible region (λ> 400 nm) for the various Ag@AgBr nanoparticles doped in the mesoporous Al-SBA-15 material. The 30% Ag@AgBr/Al-SBA-15 sample with a 30% Ag@AgBr doping exhibited enhanced photocatalytic activity and showed high stability even after four successive cycles. The results demonstrated that initial dibenzothiophene concentrations (500 ppm) reached 98.66% removal with 50 mg of the catalyst dosage, 1.0 mL of H2O2, for 360 min of sunlight irradiation at 70 °C.
Keywords:Ag@AgBr;Photocatalytic degradation;DBT;Sunlight;Photocatalyst
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