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

Abstract

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

CLC Number:

O611.6

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.

Figures/Tables 10

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References 15

[1]	QIU Y J, LU J J, YAN Y J, et al. Enhanced visible-light-driven photocatalytic degradation of tetracycline by 16% Er³⁺-Bi₂WO₆ photocatalyst[J]. Journal of Hazardous Materials, 2022, 422: 126920. DOI:10.1016/j.jhazmat.2021.126920. doi: 10.1016/j.jhazmat.2021.126920
[2]	KOUTAVARAPU R, SYED K, PAGIDI S, et al. An effective CuO/Bi₂WO₆ heterostructured photocatalyst: Analyzing a charge-transfer mechanism for the enhanced visible-light-driven photocatalytic degradation of tetracycline and organic pollutants[J]. Chemosphere, 2022, 287: 132015. DOI:10.1016/j.chemosphere.2021.132015. doi: 10.1016/j.chemosphere.2021.132015
[3]	SUN M X, YAO Y, DING W, et al. N/Ti³⁺Co-doping biphasic TiO₂/Bi₂WO₆ heterojunctions: Hydrothermal fabrication and sonophotocatalytic degradation of organic pollutants[J]. Journal of Alloys and Compounds, 2020, 820: 153172. DOI:10.1016/j.jallcom.2019.153172. doi: 10.1016/j.jallcom.2019.153172
[4]	JIANG Y, CHEN H Y, LI J Y, et al. Z-scheme 2D/2D heterojunction of CsPbBr₃/Bi₂WO₆ for improved photocatalytic CO₂ reduction[J]. Advanced Functional Materials, 2020, 30(50): 2004293. DOI:10.1002/adfm.202004293. doi: 10.1002/adfm.202004293
[5]	MENG X C, LI Z Z, ZENG H M, et al. MoS₂ quantum dots-interspersed Bi₂WO₆ heterostructures for visible light-induced detoxification and disinfection[J]. Applied Catalysis B: Environmental, 2017, 210: 160-172. DOI:10.1016/j.apcatb.2017.02.083. doi: 10.1016/j.apcatb.2017.02.083
[6]	LIU Z L, LIU R R, MU Y F, et al. In situ construction of lead-free perovskite direct Z-scheme heterojunction Cs₃Bi₂I₉/Bi₂WO₆ for efficient photocatalysis of CO₂ reduction[J]. Solar RRL, 2021, 5(3): 2000691. DOI:10.1002/solr.202000691. doi: 10.1002/solr.202000691
[7]	GUO K Y, LIU Z F, ZHOU C L, et al. Fabrication of TiO₂ nano-branched arrays/Cu₂S composite structure and its photoelectric performance[J]. Applied Catalysis B: Environmental, 2014, 154/155: 27-35. DOI:10.1016/j.apcatb.2014.02.004. doi: 10.1016/j.apcatb.2014.02.004
[8]	FU S Y, FENG W R, JIA Y, et al. Enhanced photo-electrochemical activity of ZnO/Cu₂S nanotube arrays photocathodes[J]. International Journal of Hydrogen Energy, 2021, 46(21): 11544-11555. DOI:10.1016/j.ijhydene.2021.01.051. doi: 10.1016/j.ijhydene.2021.01.051
[9]	WANG X M, WANG J Z, ZHANG X X, et al. Nitrogen-doped Cu₂S/MoS₂ heterojunction nanorod arrays on copper foam for efficient hydrogen evolution reaction[J]. ChemCatChem, 2019, 11(4): 1354-1361. DOI:10.1002/cctc.201801819. doi: 10.1002/cctc.201801819
[10]	YU B, JI Y X, HU X, et al. Heterostructured Cu₂S@ZnS/C composite with fast interfacial reaction kinetics for high-performance 3D-printed Sodium-Ion batteries[J]. Chemical Engineering Journal, 2022, 430: 132993. DOI:10.1016/j.cej.2021.132993. doi: 10.1016/j.cej.2021.132993
[11]	CHUNG H Y, TOE C Y, CHEN W J, et al. Manipulating the fate of charge carriers with tungsten concentration: Enhancing photoelectrochemical water oxidation of Bi₂WO₆[J]. Small, 2021, 17(35): e2102023. DOI:10.1002/smll.202102023. doi: 10.1002/smll.202102023
[12]	WANG H, LIU L, WANG Y F, et al. Cu₂S nanoparticles modified 3D flowerlike Bi₂WO₆: Enhanced photoelectric performance and photocatalytic degradation[J]. Materials Letters, 2015, 160: 351-354. DOI:10.1016/j.matlet.2015.07.123. doi: 10.1016/j.matlet.2015.07.123
[13]	CHENG M, YANG L, LI H Y, et al. Constructing charge transfer channel between dopants and oxygen vacancies for enhanced visible-light-driven water oxidation[J]. Nano Research, 2021, 14(10): 3365-3371. DOI:10.1007/s12274-021-3605-7. doi: 10.1007/s12274-021-3605-7
[14]	BULAKHE R N, SAHOO S, NGUYEN T T, et al. Chemical synthesis of 3D copper sulfide with different morphologies for high performance supercapacitors application[J]. RSC Advances, 2016, 6(18): 14844-14851. DOI:10.1039/c5ra25568f. doi: 10.1039/c5ra25568f
[15]	WANG F L, JIANG J F, LIU Q L, et al. Piezopotential gated two-dimensional InSe field-effect transistor for designing a pressure sensor based on piezotronic effect[J]. Nano Energy, 2020, 70: 104457. DOI:10.1016/j.nanoen.2020.104457. doi: 10.1016/j.nanoen.2020.104457

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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
仪器名称	型号	生产厂家
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

药品名称	分子式	生产厂家
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

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

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

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