N-SrTiO3 nanoparticle/BiOBr nanosheet as 0D/2D heterojunctions for enhanced visible light photocatalytic dye degradation

被引：24
作者：
Chen, Lijuan [1 ,2 ]
Shi, Liang [1 ]
Wu, Jianbo [1 ]
Tong, Zhanxin [1 ]
Huang, Cheng [1 ]
Li, Chengyu [1 ]
Ou, Baoli [1 ,2 ]
Peng, Chao [1 ]
Tian, Li [1 ,2 ]
Tang, Jianting [3 ]
机构：
[1] Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan, Hunan, Peoples R China
[2] Hunan Prov Key Lab Adv Mat New Energy Storage & C, Xiangtan, Peoples R China
[3] Hunan Univ Sci & Technol, Minist Educ, Key Lab Theoret Chem & Mol Simulat, Xiangtan, Hunan, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2020年 / 261卷
基金：
中国国家自然科学基金;
关键词：
Nitrogen doped SrTiO3 nanoparticles; 0D/2D heterojunction; BiOBr nanosheet; Photocatalytic degradation; RhB;
D O I：
10.1016/j.mseb.2020.114667
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel 0D/2D heterojunction N-SrTiO3/BiOBr (NSTO/BiOBr) was constructed by uniform dispersing of N-SrTiO3 nanoparticles on BiOBr nanosheets through a facial one-step precipitation method. All the synthesized NSTO/BiOBr composite photocatalysts with different N-SrTiO3 content were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse reflection spectroscopy (UV-Vis DRS), photoluminescence (PL) spectra, photocurrent response, electrochemical impedance spectra (EIS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N-2 adsorption-desorption. The visible light rhodamine B degradation results revealed that the formation of 0D/2D heterojunction NSTO/BiOBr results in improved photodegradation activity as compared with N-SrTiO3 and BiOBr, and NSTO/BiOBr with the 18% weight percentage of N-SrTiO3 is most effective among all the NSTO/BiOBr nanocomposites. The activity comparison of 18% NSTO/BiOBr with that of pure NSTO and BiOBr also conforms to their corresponding photoelectric response and electron transfer impedance measurements. Finally, RhB degradation mechanism over NSTO/BiOBr composite catalyst were proposed.
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页数：10
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