3D可回收型Bi<sub>2</sub>WO<sub>6</sub>/石墨烯气凝胶的制备及其光催化性能研究

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摘要为了进一步优化Bi₂WO₆的光催化性能和重复利用率,通过水热自组装法制备了具有3D结构的Bi₂WO₆/石墨烯气凝胶(BGA);采用XRD、SEM、FT-IR、UV-Vis DRS和BET等方法对制备的样品进行了表征和分析。以罗丹明B(RhB)作为目标降解物,以500 W氙灯为光源,对所制备材料的光催化性能进行了评价。当Bi₂WO₆与GA的质量比为6∶1时,催化剂在光照120 min内对罗丹明B的去除率可达99.7%,对盐酸四环素降解率可达98.6%,经过5次循环使用后,Bi₂WO₆/石墨烯气凝胶复合材料仍保持较好的光催化活性。自由基捕获实验证实h⁺为光催化降解的主要活性物质。此外,该材料还具有一定的可形变抗压性,提高了光催化剂回收再利用能力。

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	雷超
	常薇
	周莹莹
	罗杰
	李云锋
	刘斌

关键词：氧化石墨烯气凝胶钨酸铋光催化染料

Abstract： In order to improve the photocatalytic activity and recyclability of Bi₂WO₆, the Bi₂WO₆/graphene aerogel (BGA) with 3D structure were prepared by hydrothermal self-assembly method. The prepared samples were characterized by XRD, SEM, FT-IR, UV-Vis DRS, BET, etc. The photocatalytic performance of the prepared samples was evaluated using rhodamine B (RhB) as the target pollutant and 500 W xenon lamp as the light source. When the mass ratio of Bi₂WO₆ to GA was 6∶1, the degradation rate of rhodamine B by photocatalytic degradation could reach 99.7% within 120 min. After 5 cycles of use, the Bi₂WO₆/graphene aerogel composite still maintains good stability. The degradation rate of tetracycline hydrochloride was 98.6%. Free radical trapping experiments confirm that h⁺ is the main active species during the photocatalytic process. In addition, the BGA has certain deformable and compressive ability, which improves the recycling and reusability of the material.

Keywords： graphene oxide aerogel bismuth tungstate photocatalysis dye

Received 2022-09-03;

Fund:国家自然科学基金项目(22008185);陕西省重点研发计划项目(2021KW-12);西安市碑林区科技计划项目(GX2213);西安市科技计划项目(23GXFW0019)。

Corresponding Authors: 常薇,教授,E-mail:changwei@xpu.edu.cn。 Email: changwei@xpu.edu.cn

About author: 雷超(1996-),男,硕士研究生,现从事光催化复合材料领域研究。

引用本文:

雷超, 常薇, 周莹莹, 罗杰, 李云锋, 刘斌.3D可回收型Bi₂WO₆/石墨烯气凝胶的制备及其光催化性能研究[J]. 化学工业与工程, 2024,41(1): 21-27

LEI Chao, CHANG Wei, ZHOU Yingying, LUO Jie, LI Yunfeng, LIU Bin.Preparation and photocatalytic properties of 3D recyclable Bi₂WO₆/graphene aerogels[J]. Chemcial Industry and Engineering, 2024,41(1): 21-27

[1] PAN J, DOU H, XIONG Z, et al. Porous photocatalysts for advanced water purifications[J]. Journal of Materials Chemistry, 2010, 20(22): 4512-4528
[2] XIANG Q, YU J, JARONIEC M. Graphene-based semiconductor photocatalysts[J]. Chemical Society Reviews, 2012, 41(2): 782-796
[3] ZHU Z, REN Y, LI Q, et al. One-pot electrodeposition synthesis of Bi₂WO₆/graphene composites for photocatalytic applications under visible light irradiation[J]. Ceramics International, 2018, 44(3): 3511-3516
[4] GAO M, ZHANG D, LI H, et al. Enhanced photocatalytic activity of AgCl/BiOCl heterostructures synthesized by a one-pot combustion method[J]. Materials Letters, 2015, 159: 406-409
[5] LI F, YANG C, LI Q, et al. The pH-controlled morphology transition of BiVO₄ photocatalysts from microparticles to hollow microspheres[J]. Materials Letters, 2015, 145: 52-55
[6] 郭文慧, 杨明成, 刘文涛, 等. CS/PVA水凝胶的制备与性能研究[J]. 河南科学, 2020, 38(8):1222-1227 GUO Wenhui, YANG Mingcheng, LIU Wentao, et al. Preparation and properties of CS/PVA hydrogel[J]. Henan Science, 2020, 38(8): 1222-1227(in Chinese)
[7] 黄程源, 邓见敏, 杨雷, 等. 花球形Bi₂WO₆的合成及其光催化性能研究[J]. 化工新型材料, 2022, 50(5): 201-205, 211 HUANG Chenyuan, DENG Jjianmin, YANG Lei, et al. Synthesis and photocatalytic performance of flower-like microspheres Bi₂WO₆[J]. New Chemical Materials, 2022, 50(5): 201-205, 211(in Chinese)
[8] LIU Y, TANG H, LV H, et al. Facile hydrothermal synthesis of TiO₂/Bi₂WO₆ hollow microsphere with enhanced visible-light photoactivity[J]. Powder Technology, 2015, 283: 246-253
[9] WANG J, TANG L, ZENG G, et al. Plasmonic Bi metal deposition and g-C₃N₄ coating on Bi₂WO₆ microspheres for efficient visible-light photocatalysis[J]. ACS Sustainable Chemistry & Engineering, 2017, 5(1): 1062-1072
[10] TAO R, ZHAO C, SHAO C, et al. Bi₂WO₆/ZnFe₂O₄ heterostructures nanofibers: Enhanced visible-light photocatalytic activity and magnetically separable property[J]. Materials Research Bulletin, 2018, 104: 124-133
[11] ADHIKARI S, KIM D H. Synthesis of Bi₂S₃/Bi₂WO₆ hierarchical microstructures for enhanced visible light driven photocatalytic degradation and photoelectrochemical sensing of ofloxacin[J]. Chemical Engineering Journal, 2018, 354: 692-705
[12] CHANG C, WANG C, WEI Y, et al. Enhanced photocatalytic H₂ production activity of Ag-doped Bi₂WO₆-graphene based photocatalysts[J]. International Journal of Hydrogen Energy, 2018, 43(24): 11345-11354
[13] DREYER D R, PARK S, BIELAWSKI C W, et al. The chemistry of graphene oxide[J]. Chemical Society Reviews, 2010, 39(1): 228-240
[14] 周庆芳, 吕生华. 罗丹明B的TiO₂/GO复合物光催化降解[J]. 印染, 2016, 42(18): 12-15 ZHOU Qingfang, LÜ Shenghua. Photocatalytic degradation of Rhodamine B with TiO₂/GO composite[J]. China Dyeing & Finishing, 2016, 42(18): 12-15(in Chinese)
[15] 张勇, 余琴. 壳聚糖/氧化石墨烯改性聚酯非织造布的抗菌及亲水性[J]. 西安工程大学学报, 2021, 35(4):8-12 ZHANG Yong, YU Qin. Antibacterial and hydrophilic finishing of chitosan/graphene oxide on polyester nonwoven fabrics[J]. Journal of Xi’an Polytechnic University, 2021, 35(4):8-12 (in Chinese)
[16] ZHAI J, YU H, LI H, et al. Visible-light photocatalytic activity of graphene oxide-wrapped Bi₂WO₆ hierarchical microspheres[J]. Applied Surface Science, 2015, 344: 101-106
[17] YAO J, GAO Z, MENG Q, et al. One-step synthesis of reduced graphene oxide based ceric dioxide modified with cadmium sulfide (CeO₂/CdS/RGO) heterojunction with enhanced sunlight-driven photocatalytic activity[J]. Journal of Colloid and Interface Science, 2021, 594: 621-634
[18] ZHU H, LI Z, YANG J. A novel composite hydrogel for adsorption and photocatalytic degradation of bisphenol A by visible light irradiation[J]. Chemical Engineering Journal, 2018, 334: 1679-1690
[19] WANG Y, DI Y, ANTONIETTI M, et al. Excellent visible-light photocatalysis of fluorinated polymeric carbon nitride solids[J]. Chemistry of Materials, 2010, 22(18): 5119-5121
[20] SUI Z, MENG Q, ZHANG X, et al. Green synthesis of carbon nanotube-graphene hybrid aerogels and their use as versatile agents for water purification[J]. Journal of Materials Chemistry, 2012, 22(18): 8767-8771
[21] YANG X, CHEN Z, FANG J, et al. Freestanding 3D MoS₂ nanosheets/graphene aerogel heterostructure as a recyclable photocatalyst for efficiently degrading antibiotic residues[J]. Materials Letters, 2019, 252: 5-7
[22] MANDAL P, NAIK M J P, SAHA M. Room temperature synthesis of graphene nanosheets[J]. Crystal Research and Technology, 2018, 53(2):1700250
[23] DONG S, CUI L, LIU C, et al. Fabrication of 3D ultra-light graphene aerogel/Bi₂WO₆ composite with excellent photocatalytic performance: A promising photocatalysts for water purification[J]. Journal of the Taiwan Institute of Chemical Engineers, 2019, 97: 288-296