Facile in situ chemical transformation synthesis, boosted charge separation, and increased photocatalytic activity of BiPO4/BiOCl p-n heterojunction photocatalysts under simulated sunlight irradiation

被引：75

作者：

Zhang, Dafeng ^{[1
]}

Su, Changhua ^{[1
]}

Yao, Shujuan ^{[1
]}

Li, Hong ^{[1
]}

Pu, Xipeng ^{[1
]}

Geng, Yanling ^{[2
]}

机构：

[1] Liaocheng Univ, Sch Mat Sci & Engn, Shandong Prov Key Lab Chem Energy Storage & Novel, Liaocheng 252000, Shandong, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2020年 / 147卷

关键词：

BiPO4/BiOCl; p-n heterojunction; Photocatalysis; Sunlight irradiation; GRAPHITIC CARBON NITRIDE; SOLID-SOLUTION; DEGRADATION; FABRICATION; NANOPHOTOCATALYST; HETEROSTRUCTURE; NANOCOMPOSITES; TETRACYCLINE; PERFORMANCE; REMOVAL;

D O I：

10.1016/j.jpcs.2020.109630

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

BiPO4/BiOCl p-n heterojunction photocatalysts were successfully prepared by a facile in situ chemical transformation method with the aim of degrading rhodamine B under simulated sunlight. X-ray diffraction, field emission scanning electron microscopy, ultraviolet-visible diffuse reflectance spectroscopy, photoluminescence, and electrochemistry tests were used to characterized the structure, morphology, optical properties, and inhibited recombination of photoinduced charges. BiPO4/BiOCl composites exhibited significantly higher photocatalytic activity for the degradation of rhodamine B than pure BiOCl, and the apparent rate constant is 3.18 times higher than that of BiOCl. The significantly increased photocatalytic activity of the BiPO4/BiOCl composites can be ascribed to the formation of a p-n heterojunction, which can effectively boost the separation of photoinduced electron-hole pairs during the photocatalytic process. Additionally, the main active species were investigated and a plausible mechanism is proposed.

引用

页数：7

共 58 条

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