Facile and green synthesis of novel porous g-C3N4/Ag3PO4 composite with enhanced visible light photocatalysis

被引：62
作者：
Zhang, Jinfeng [1 ]
Lv, Jiali [1 ]
Dai, Kai [1 ]
Liu, Qi [2 ]
Liang, Changhao [1 ,3 ,4 ]
Zhu, Guangping [1 ]
机构：
[1] Huaibei Normal Univ, Anhui Key Lab Energet Mat, Coll Phys & Elect Informat, Huaibei 235000, Peoples R China
[2] Chinese Acad Sci, Inst Microelect, Key Lab Microelect Devices & Integrated Technol, Beijing 100029, Peoples R China
[3] Chinese Acad Sci, Key Lab Mat Phys, Hefei 230031, Peoples R China
[4] Chinese Acad Sci, Anhui Key Lab Nanomat & Nanotechnol, Inst Solid State Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2017年 / 43卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Chemical preparation; Composites; Catalysis; Photocatalytic activity; GRAPHITIC CARBON NITRIDE; AG3PO4; SUB-MICROCRYSTALS; HIGHLY EFFICIENT; HYDROGEN-PRODUCTION; HETEROJUNCTION STRUCTURE; TERNARY COMPOSITE; WATER OXIDATION; H-2; EVOLUTION; PERFORMANCE; DEGRADATION;
D O I：
10.1016/j.ceramint.2016.10.125
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, novel Z-scheme porous graphitic C3N4 (Pg-C3N4)/Ag3PO4 composite was synthesized by a facile and green method at room temperature. Scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive spectrometer (EDS) and UV-vis diffuse reflectance spectroscopy (DRS) were used to characterize the structural, crystal and optical properties of the as-prepared nanocomposites. Photocatalytic activity of catalysts is evaluated by degrading methylene blue (MB) under visible light irradiation. The results showed that photocatalytic activity of Pg-C3N4/Ag3PO4 was much higher than that of Pg-C3N4 and Ag3PO4. The kinetic constant K-app of MB degradation over Pg-C3N4/Ag3PO4 was 1.45 and 9.6 times as high as that of Ag3PO4 and Pg-C3N4, respectively. Finally, Z-scheme photocatalytic mechanism is proposed.
引用
收藏
页码：1522 / 1529
页数：8
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