A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance

被引：144

作者：

Zheng, Chengxiang ^{[1
,2
]}

Yang, Hua ^{[1
,2
]}

Cui, Ziming ^{[2
]}

Zhang, Haimin ^{[2
]}

Wang, Xiangxian ^{[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：

NANOSCALE RESEARCH LETTERS | 2017年 / 12卷

基金：

中国国家自然科学基金;

关键词：

Bi4Ti3O12; nanoparticles; Ag3PO4; Bi4Ti3O12/Ag3PO4; heterojunction; Photocatalytic performance; Photocatalytic mechanism; LIGHT-DRIVEN PHOTOCATALYSTS; VISIBLE-LIGHT; CONTROLLABLE SYNTHESIS; AG3PO4; MICROSPHERES; FACILE SYNTHESIS; WATER-TREATMENT; 110; FACETS; DEGRADATION; NANOCOMPOSITES; MICROCRYSTALS;

D O I：

10.1186/s11671-017-2377-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, we integrated Ag3PO4 with Bi4Ti3O12 to form Bi4Ti3O12/Ag3PO4 heterojunction nanocomposites by an ion-exchange method. The as-prepared Bi4Ti3O12/Ag3PO4 composites were systematically characterized by means of XRD, SEM, TEM, BET, XPS, UV-vis DRS, EIS, PL spectroscopy, and photocurrent response. SEM, TEM, and XPS results demonstrate the creation of Bi4Ti3O12/Ag3PO4 heterojunction with obvious interfacial interaction between Bi4Ti3O12 and Ag3PO4. PL spectra, EIS spectra, and photocurrent responses reveal that the composites display an enhanced separation efficiency of photogenerated electron-hole pairs, which is due to the charge transfer between Bi4Ti3O12 and Ag3PO4. Rhodamine B (RhB) was chosen as the target organic pollutant to evaluate its degradation behavior over Bi4Ti3O12/Ag3PO4 composites under simulated sunlight irradiation. Compared to bare Bi4Ti3O12 and Ag3PO4 nanoparticles, the composites exhibit a significantly enhanced photocatalytic activity. The highest photocatalytic activity is observed for the 10% Bi4Ti3O12/Ag3PO4 composite with 10% Bi4Ti3O12 content, which is about 2.6 times higher than that of bare Ag3PO4. The photocatalytic mechanism involved was investigated and discussed in detail.

引用

页数：12

共 60 条

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