Bi2WO6-Cu2S复合材料的制备及其有机物降解应用

doi:10.3976/j.issn.1002-4026.2023.01.010

山东科学 ›› 2023, Vol. 36 ›› Issue (1): 74-83.doi: 10.3976/j.issn.1002-4026.2023.01.010

Bi₂WO₆-Cu₂S复合材料的制备及其有机物降解应用

杨孟春(), 王衍虎(), 王晓^*()

齐鲁工业大学(山东省科学院) 山东省分析测试中心,山东济南 250014

收稿日期:2022-04-28 出版日期:2023-02-20 发布日期:2023-02-08
通信作者: *王衍虎(1989—),男,副研究员,研究方向为无机功能纳米材料可控制备与应用。E-mail: wyhloving633@163.com;
王晓(1971—),男,研究员,研究方向为天然产物化学及标准样品研究。E-mail: wangx@sdas.org
作者简介:杨孟春(1995—),女,硕士研究生,研究方向为无机功能纳米材料可控制备与应用。E-mail:1159305160@qq.com
基金资助:
国家自然科学基金(22004075);山东省自然科学基金(ZR2020QB091)

Fabrication of Bi₂WO₆-Cu₂S heterostructures for piezo-photoelectric degradation of organic dye

YANG Mengchun(), WANG Yanhu(), WANG Xiao^*()

Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China

Received:2022-04-28 Online:2023-02-20 Published:2023-02-08

摘要/Abstract

摘要：

针对传统光催化剂可见光利用率低下以及体相/界面光生电子-空穴复合严重难题,利用水热法制备二维结构的Bi₂WO₆纳米片,为进一步改善光吸收,基于能级匹配原则,通过水热法在二维Bi₂WO₆纳米片表面原位生长Cu₂S构建Bi₂WO₆-Cu₂S异质结,基于二维Bi₂WO₆纳米片优良的压电性能以及Bi₂WO₆-Cu₂S异质结良好的光吸收及载流子传输性能,构建光-电-压电三种效应协同催化体系,探索最优降解实验条件,并成功用于水中罗丹明B的降解中。结果表明在光-电-压电效应协同作用下,设计的Bi₂WO₆-Cu₂S对罗丹明B的降解率在40 min内达到87%,为利用光电催化和压电催化的协同作用设计独特的异质结结构开辟了一条新途径。

关键词: 光电化学, 压电效应, 异质结, 钨酸铋, 硫化亚铜, 载流子分离, 有机物染料降解

Abstract:

Owing to the low visible-light utilization of traditional photocatalysts and the serious problem of photogenerated electron-hole recombination at the bulk/interface, two-dimensional Bi₂WO₆ nanosheets were prepared herein using the hydrothermal method. Based on the principle of energy-level matching, Cu₂S was grown on the surface of the two-dimensional Bi₂WO₆ nanosheets using the hydrothermal method to construct Bi₂WO₆-Cu₂S heterojunctions for improved light absorption. Based on the excellent piezoelectric properties of the nanosheets and the excellent optical absorption and carrier transport properties of the Bi₂WO₆-Cu₂S heterojunctions, a piezo-photoelectric synergistic catalytic system was constructed and the optimal degradation experimental conditions were explored. The Bi₂WO₆-Cu₂S material was successfully applied for the degradation of Rhodamine B(RhB) in water. The results showed that under the synergistic photoelectric-piezoelectric effect, the degradation rate of RhB by the designed Bi₂WO₆-Cu₂S reached 87% in 40 min. This study provides a new way for designing unique heterojunction structures via the synergistic action of photocatalysis and piezoelectric catalysis.

Key words: photoelectrochemistry, piezotronic effect, heterostructure, Bi₂WO₆, Cu₂S, charge carrier separation, organic-dye degradation

中图分类号:

O611.6

杨孟春, 王衍虎, 王晓. Bi₂WO₆-Cu₂S复合材料的制备及其有机物降解应用[J]. 山东科学, 2023, 36(1): 74-83.

YANG Mengchun, WANG Yanhu, WANG Xiao. Fabrication of Bi₂WO₆-Cu₂S heterostructures for piezo-photoelectric degradation of organic dye[J]. Shandong Science, 2023, 36(1): 74-83.

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仪器名称	型号	生产厂家
氟掺杂的氧化铟锡导电玻璃(FTO)	2.2 mm,膜厚500 nm	华南湘城科技有限公司
氙灯光源	PLS-SXE 300UV EC550	北京泊菲莱科技有限公司
电化学工作站	CHI 660E	上海辰华公司
扫描电子显微镜	SUPRA 55	德国ZEISS集团
透射电子显微镜	FEI Talos F200X	美国FEI公司
X射线衍射仪	Bruker D8	德国 Bruker 公司
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紫外可见分光光度计	UV-3600	日本岛津公司
电热鼓风干燥箱	DHG-9075A	上海一恒科学仪器有限公司
共聚焦拉曼显微镜	LabRam HR800	法国HORIBA Jobin Yvon公司
压电力显微镜	HF2LI	瑞士苏黎世仪器
紫外可见近红外漫反射仪	3600plus	日本岛津公司

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二乙二醇(二甘醇)	C₄H₁₀O₃	上海麦克林生物化学有限公司
硫代乙酰胺	C₂H₅NS	国药集团化学试剂有限公司
乙二醇	C₂H₆O₂	国药集团化学试剂有限公司
五水硝酸铋	Bi(NO₃)₃·5H₂O	国药集团化学试剂有限公司
乙二胺四乙酸(EDTA)	C₁₀H₁₆N₂O₈	天津市科密欧化学试剂有限公司
二水合钨酸钠	Na₂WO₄·2H₂O	国药集团化学试剂有限公司
氢氧化钠	NaOH	国药集团化学试剂有限公司
无水醋酸铜	C₄H₆O₄Cu	阿拉丁试剂(上海)有限公司
硫脲	H₂NCSNH₂	国药集团化学试剂有限公司
无水硫酸钠	Na₂SO₄	国药集团化学试剂有限公司

Bi₂WO₆-Cu₂S复合材料的制备及其有机物降解应用

Fabrication of Bi₂WO₆-Cu₂S heterostructures for piezo-photoelectric degradation of organic dye

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