Construction of N-doped TiO2/MoS2 heterojunction with synergistic effect for enhanced visible photodegradation activity

被引：44

作者：

Tang, Xinde ^{[1
]}

Wang, Zhengrong ^{[1
]}

Huang, Wei ^{[1
]}

Jing, Quanwei ^{[1
]}

Liu, Ning ^{[1
]}

机构：

[1] Hunan Inst Technol, Dept Mat & Chem Engn, Hengyang 421002, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2018年 / 105卷

关键词：

MoS2; N-doped TiO2; Heterojunction photocatalyst; Visible light; Reusable; LIGHT PHOTOCATALYTIC ACTIVITIES; TIO2; PHOTOCATALYSIS; MOS2; NANOPARTICLES; HYDROGEN EVOLUTION; METHYLENE-BLUE; RHODAMINE-B; IRRADIATION; PERFORMANCE; GRAPHENE; DEGRADATION;

D O I：

10.1016/j.materresbull.2018.04.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An N-doped TiO2/MoS2 heterojunction photocatalyst constructed by two-dimension MoS2 nanosheets and N-doped TiO2 nanoparticles was successfully synthesized by a hydrothermal method. The synthesized N-TiO2/MoS2 composites were characterized by XRD, XPS, TEM, UV-vis DRS and PL, and its visible photocatalytic activity was evaluated by degradation of methylene blue. The results showed that N-doped TiO2/MoS2 heterojunction photocatalyst achieved more enhanced photocatalytic activity compared with pure TiO2, MoS2 and N-doped TiO2 for degradation of MB. Trapping tests with different scavengers indicated that not hydroxyl radicals (center dot OH) but superoxide radicals (center dot O-2(-)) and photogenerated holes (h(+)) were highly responsible for the degradation process. The reusable experiments showed that the prepared N-doped TiO2/MoS2 heterojunction photocatalyst was stable during the photodegradation of MB and will have practical applications for environmental remediation.

引用

页码：126 / 132

页数：7

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