Structure and photocatalytic oxidation desulfurization performance of CeO2/HTi2NbO7-NS nanocomposite

被引：14

作者：

Geng, Tingting ^{[1
]}

He, Jie ^{[1
]}

Hu, Lifang ^{[1
]}

Li, Jie ^{[1
]}

机构：

[1] Anhui Univ Sci & Technol, Sch Chem Engn, 168 Taifeng Rd, Huainan 232001, Peoples R China

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2019年 / 101卷

基金：

中国国家自然科学基金;

关键词：

CeO2/HTi2NbO7-NS; Exfoliation-restructuring; Ethyl mercaptan (EM); Type-II heterojunction; Photocatalytic oxidation; METHYL MERCAPTAN; EFFICIENT CATALYST; FACILE SYNTHESIS; CEO2; COMPOSITE; NANOPARTICLES; DEGRADATION; NANOSHEETS; MECHANISM; REMOVAL;

D O I：

10.1016/j.inoche.2019.01.007

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

CeO2/HTi2NbO7-NS nanocomposite based on HTi2NbO7 nanosheet (HTi2NbO7 -NPs) and Cerium dioxide nanoparticles (CeO2-NPs) was fabricated through an exfoliation-restructuring method. The as-prepared samples were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), laser Raman Spectroscopy (LRS), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflection spectroscopy (UV-Vis DRS) and N-2 adsorption-desorption measurements. The adsorption and photocatalytic properties of the as-prepared samples were evaluated using ethyl mercaptan (EM) in methane gas as the model pollutant. The results indicated that CeO2-NPs were uniformly distributed on the surface of HTi2NbO7-NS and the band gap energy of CeO2 /HTi2NbO7-NS nanocomposite was reduced compared with its precursor. The type-II heterojunction was formed due to suitable band structures of host and guest materials. The CeO2/HTi2NbO7-NS nanocomposite owns the best adsorption capacity and photocatalytic oxidation activity, which was mainly attributed to the lower band gap and efficient separation of electron-hole pairs of CeO2/HTi2NbO7-NS nanocomposite.

引用

页码：103 / 112

页数：10

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