Morphology normalization of peony flower-like Bi2O2CO3 boosts photocatalytic seawater purification

被引：11

作者：

Jia, Shihao ^{[1
]}

Wang, Bin ^{[2
]}

Liu, Jinyuan ^{[2
]}

Liu, Gaopeng ^{[2
]}

Zhu, Xingwang ^{[3
]}

Han, Huimin ^{[1
]}

Tang, Qi ^{[1
]}

Hua, Yingjie ^{[1
]}

Wang, Chongtai ^{[1
]}

Li, Huaming ^{[2
]}

机构：

[1] Hainan Normal Univ, Sch Chem & Chem Engn, Key Lab Electrochem Energy Storage & Energy Conver, Key Lab Electrochem Energy Storage & Light Energy, Haikou 571158, Peoples R China

[2] Jiangsu Univ, Inst Energy Res, Sch Chem & Chem Engn, 301 Xuefu Rd, Zhenjiang 212013, Peoples R China

[3] Yangzhou Univ, Coll Environm Sci & Engn, Yangzhou 225009, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2022年 / 653卷

基金：

中国国家自然科学基金;

关键词：

Bi2O2CO3 ??????; Morphology normalization; Photocatalysts; Photocatalytic mechanism; Seawater purification; 001; FACETS; OXYGEN VACANCIES; FACILE SYNTHESIS; MECHANISM; HETEROJUNCTION; PERFORMANCE; TIO2; PHOTODEGRADATION; TETRACYCLINE; SHEETS;

D O I：

10.1016/j.colsurfa.2022.129915

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The development of sunlight as the driving force to purify the marine environment is an energy-saving, environmentally friendly and sustainable technology. The construction of photocatalysts with morphology normalization is expected to guide the adjustment of light absorption properties and electron transfer paths, thereby enhancing the photocatalytic performance. Herein, the peony flower-like Bi2O2CO3 (BOC) with morphology normalization was successfully prepared by the simple hydrothermal technology in the presence of poly-vinylpyrrolidone (PVP) as polymer microreactor. The normalized peony flower-like BOC effectively broadens the light absorption range, improves the carrier separation efficiency, and prompts more active oxygen species (center dot O-2) generation. Compared with the amorphous BOC, the photocatalytic degradation rate of organic dyes for normalized peony flower-like BOC is increased by at least 2.3 times. The normalized peony flower-like BOC with good ion anti-interference ability exhibited excellent photocatalytic performance for decomposing organic pollutants in real seawater. The degradation efficiency of RhB in seawater under natural light is 98.7%. The detailed degradation intermediates were probed in depth by liquid chromatograph-mass spectrometer, and speculate the possible photocatalytic mechanism. This work opens up fresh ideas for the design of photocatalysts on efficient seawater purification.

引用

页数：12

共 57 条

[1] Fabrication of S-scheme ZnO/Zn3(PO4)2 heterojunction photocatalyst toward photodegradation of tetracycline antibiotic and photocatalytic mechanism insight [J].