CdS修饰TiO_(2)棒阵列/导电云母复合材料及其光阴极保护性能  

CdS Modified TiO_(2) Nanorod Array/Conductive Mica and Their Photocathodic Protection Performance

作　　者：左士祥[1,2] 曹晓曼 刘展 刘文杰 李霞章[1] 姚超[1,2] ZUO Shixiang;CAO Xiaoman;LIU Zhan;LIU Wenjie;LI Xiazhang;YAO Chao(School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China;Research&Development Center of Xuyi Attapulgite Applied Technology,Changzhou University,Xuyi 211700,China)

机构地区：[1]常州大学石油化工学院,江苏常州213164 [2]常州大学盱眙凹土研发中心,江苏盱眙211700

出　　处：《常州大学学报（自然科学版）》2021年第4期1-7,共7页Journal of Changzhou University：Natural Science Edition

基　　金：江苏省重点研发计划(产业前瞻与共性关键技术)(BE 2018100);淮安市自然科学研究计划(HAB 201952)。

摘　　要：通过水热法,TiO_(2)纳米棒生长在片状导电云母核体表面成功合成了TiO_(2)纳米棒/导电云母复合材料(TiO_(2)NRA/C-mica)。为提高TiO_(2)NRA的光响应能力,通过溶液浸渍法在TiO_(2)NRA上负载硫化镉纳米粒子(CdS NPs)制备出CdS修饰TiO_(2)NRA/C-mica复合材料。通过XRD,SEM,UV-Vis,PL和光电化学等技术对所制得的复合材料进行表征。结果表明,CdS NP均匀负载于TiO_(2)NRA上形成了异质结构,有效拓宽了TiO_(2)NRA/C-mica的可见光响应范围和光生电子-空穴的分离效率;CdS NP(8)/TiO_(2)NRA/C-mica具有较佳的光电化学性能。与TiO_(2)NRA/C-mica相比,CdS NP(8)/TiO_(2)NRA/C-mica复合材料的光电流密度提高0.9倍,电位降高出300 mV(vs.SCE),对304不锈钢具有优异的光阴极保护性能和防腐效果。TiO_(2) nanorod arrays(TiO_(2)NRA)were grown on the conductive mica(C-mica)by the hydrothermal method to successfully prepare TiO_(2) NRA/C-mica.For the enhancement of the light response capacity of TiO_(2) NRA,CdS nanoparticles(CdS NPs)were further loaded on the surface of TiO_(2) NRA by the solution impregnation to fabricate CdS NP modifed TiO_(2) NRA/C-mica.The obtained samples were characterized by XRD,SEM,UV-Vis,PL and photochemical techniques.The results show that CdS NPs are uniformly loaded on the surface of TiO_(2) NRA to generate heterostructure,which effectively broadens the response range of the visible light and improves the separation efficiency of the photo-induced electron-hole for CdS modifed TiO_(2) NRA/C-mica.The obtained composites impregnated 8 times have better photoelectrochemical performance.The photocurrent density of CdS NP(8)/TiO_(2) NRA/C-mica increases by 0.9 times and the potential drop is 300 mV(vs.SCE)higher than those of TiO_(2) NRA/C-mica.CdS NP(8)/TiO_(2) NRA/C-mica is found to possess excellent photocathodic protection and anticorrosion for the 304SS.

关 键 词：TiO_(2)纳米棒阵列 纳米硫化镉 异质结构 光阴极保护 防腐 

分 类 号：TB332[一般工业技术—材料科学与工程]