化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (1) : 94-98. DOI: 10.19817/j.cnki.issn1006-3536.2022.01.019

新材料与新技术

C-TiO₂/CdS复合纤维膜的制备及光催化产氢性能研究

^1,2

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Preparation and photocatalytic hydrogen production of C-TiO₂/CdS composite fiber membrane

Tu Shenghui^1,2, Chen Fan^1,2, Sun Yinghao¹, Xu Chong^1,2, Chen Jianxin^1,2

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Received		Published
2021-07-19		2022-01-20
Issue Date	Revised Date
2022-02-08	2021-07-19

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摘要

采用溶胶-凝胶法和水热法合成C-TiO₂/CdS复合催化剂,并使用静电纺丝法以聚乙烯醇(PVA)为模板剂制备纳米纤维膜载体,通过浸渍法负载催化剂制成壳-核状的C-TiO₂/CdS复合纤维膜。通过X射线衍射、X射线光电子能谱技术、漫反射光谱和扫描电镜对催化剂结构组成和形貌进行分析。以乙醇为牺牲试剂,测试了C-TiO₂/CdS复合纤维膜在可见光下的产氢性能。光催化实验结果表明:相比纯TiO₂,复合纤维膜产氢效率更高且方便回收再使用,1.5g葡萄糖作C源、0.15g CdCl₂改性的C-TiO₂/CdS、乙醇浓度为30%时复合纤维膜产氢效率最高,可见光下反应6h后达4730μmol,是纯TiO₂产氢量312μmol的14倍。

Abstract

The C-titanium dioxide(TiO₂)/cadmium sulfide(CdS)composite nanocatalyst was synthesized by the sol-gel and hydrothermal method.The nanofiber membrane carrier was prepared by the electrospinning method with polyvinyl alcohol (PVA) as the template.The catalyst was loaded by the impregnation method to make the shell C-TiO₂/CdS composite fiber membrane with core structure.The structure,composition and morphology of the catalyst were analyzed by XRD,XPS,DRS and SEM.The hydrogen production activity of C-TiO₂/CdS under visible light was tested using ethanol as sacrificial agent.Photocatalysis experiments shown that,compared with TiO₂,the membrane had a higher hydrogen production efficiency,and was convenient for recycling and reuse.When 1.5g glucose was used as C source,0.15g CdCl₂-modified C-TiO₂/CdS,and the concentration of ethanol was 30%,the hydrogen production efficiency reached 4730μmol after 6h reaction under visible light,which was 14 times that of pure TiO₂ of 312μmol.

关键词

二氧化钛 / 硫化镉 / 静电纺丝 / 光催化产氢 / 可见光

Key words

TiO₂ / CdS / electrospinning / photocatalytic hydrogen / visible light

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C-TiO₂/CdS复合纤维膜的制备及光催化产氢性能研究[J]. 化工新型材料, 2022, 50(1): 94-98 DOI:10.19817/j.cnki.issn1006-3536.2022.01.019

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基金资助

国家自然科学基金(21966021)

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