Enhanced photocatalytic performance of g-C3N4/Bi4Ti3O12 heterojunction nanocomposites

被引：117
作者：
Cui, Ziming [1 ,2 ]
Yang, Hua [1 ,2 ]
Zhao, Xinxin [2 ]
机构：
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
[2] Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2018年 / 229卷
基金：
中国国家自然科学基金;
关键词：
Bi4Ti3O12; nanoparticles; g-C3N4; nanosheets; g-C3N4/Bi4Ti3O12; heterojunction; Photocatalytic performance; WASTE-WATER; HYDROTHERMAL SYNTHESIS; CONTROLLABLE SYNTHESIS; CO2; REDUCTION; 001; FACETS; DEGRADATION; HETEROSTRUCTURE; COMPOSITE; G-C3N4; NANOPARTICLES;
D O I：
10.1016/j.mseb.2017.12.037
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two types of g-C3N4/Bi4Ti3O12 p-n heterostructures were prepared by a simple mixing calcining method. One is constructed from Bi4Ti3O12 (BTO) nanoparticles and g-C3N4 nanosheets (NS), and the other is constructed from BTO nanoparticles and g-C3N4 nanoparticles (NP). The structures, morphologies, optical and electrochemical properties of the samples were systematically characterized. PL spectra, EIS spectra and photocurrent responses demonstrate an effective separation of photogenerated electron-hole pairs for the composites. The photocatalytic performance of the composites was evaluated by the degradation of rhodamine B (RhB) under simulated-sunlight irradiation, revealing that they, exhibit an enhanced photocatalytic activity compared to bare BTO and g-C3N4. The highest photocatalytic activity is observed for the composites with g-C3N4 content centered around 10%. Furthermore, g-C3N4(NP)/BTO composites integrated from BTO and g-C3N4 nanoparticles possess a superior photocatalytic activity compared to those integrated from BTO nanoparticles and g-C3N4 nanosheents.
引用
收藏
页码：160 / 172
页数：13
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