C-TiO_(2)/CdS复合纤维膜的制备及光催化产氢性能研究  

Preparation and photocatalytic hydrogen production of C-TiO_(2)/CdS composite fiber membrane

作　　者：涂盛辉 陈帆 孙英豪 徐翀 陈建新 Tu Shenghui;Chen Fan;Sun Yinghao;Xu Chong;Chen Jianxin(College of Resources,Environment and Chemical Engineering,Nanchang University,Nanchang 330031;Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,Nanchang 330031)

机构地区：[1]南昌大学资源环境与化工学院,南昌330031 [2]鄱阳湖环境与资源利用教育部重点实验室,南昌330031

出　　处：《化工新型材料》2022年第1期94-98,共5页New Chemical Materials

基　　金：国家自然科学基金(21966021)。

摘　　要：采用溶胶-凝胶法和水热法合成C-TiO_(2)/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-TiO_(2)/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-TiO_(2)/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TiO_(2),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 CdCl_(2)改性的C-TiO_(2)/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TiO_(2)产氢量312μmol的14倍。The C-titanium dioxide(TiO_(2))/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-TiO_(2)/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-TiO_(2)/CdS under visible light was tested using ethanol as sacrificial agent.Photocatalysis experiments shown that,compared with TiO_(2),the membrane had a higher hydrogen production efficiency,and was convenient for recycling and reuse.When 1.5 g glucose was used as C source,0.15 g CdCl_(2)-modified C-TiO_(2)/CdS,and the concentration of ethanol was 30%,the hydrogen production efficiency reached 4730μmol after 6 h reaction under visible light,which was 14 times that of pure TiO_(2) of 312μmol.

关 键 词：二氧化钛 硫化镉 静电纺丝 光催化产氢 可见光 

分 类 号：O643[理学—物理化学]