Fabrication of photocatalytic composite of multi-walled carbon nanotubes/TiO₂ and its application for desulfurization of diesel

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• 作者：Thu Ha Thi Vu^a ; ^{ptntd2004@yahoo.fr} ; Thu Trang Thi Nguyen^a ; Phuong Hoa Thi Nguyen^a ; Manh Hung Do^a ; Hang Thi Au^a ; Thanh Binh Nguyen^b ; Dinh Lam Nguyen^c ; Jun Seo Park^d
• 关键词：Desulfurization ; Composite ; Multi-walled carbon nanotubes ; TiO2
• 刊名：Materials Research Bulletin
• 出版年：2012
• 出版时间：February 2012
• 年：2012
• 卷：47
• 期：2
• 页码：308-314
• 全文大小：1229 K

文摘

Composite of multi-walled carbon nanotubes (MWNTs) and titanium (IV) oxide (TiO₂) were prepared by a heterogeneous gelation method. The activities of the MWNTs/TiO₂ composites were evaluated by photocatalytic oxidative desulfurization using dibenzothiophene (DBT), 4,6-dimethyl dibenzothiophene (4,6-DMDBT), n-tetradecane, and commercial diesel under irradiation using a high-pressure Hg lamp. The microstructures of MWNTs/TiO₂ composites were characterized by N₂ adsorption, scanning electron microscopy, transmission electron microscope, and X-ray diffraction. It was found that more than 98 % of sulfur compounds in commercial diesel were oxidized and removed by the use of the MWNTs/TiO₂ composite as a photocatalyst.