中国石油大学学报（自然科学版）Issue(3)：183-187,5.DOI:10.3969/j.issn.1673-5005.2015.03.026
Ag改性TiO2纳米管阵列的光电化学性能研究
Photoelectrochemical properties of Ag-TiO2 nanotube arrays
摘要
Abstract
Ag modified TiO2 nanotube arrays was prepared by anodic oxidation and photodeposition methods. The crystal type and morphology of the samples were analyzed by X-ray diffraction and SEM techniques. And the photoelectrochemical proper-ties were investigated using I-E, photopotential, photocurrent response, and Mott-Schottky through electrochemical worksta-tion with three-electrode system. The results show that the inside diameter of TiO2 nanotube arrays is approximately 60 nm with wall thickness of 30 nm, and the diameter of Ag nanoparticle is about 15~20 nm. The influence of photodeposition time on the Ag size is little, which only increases the deposition amount of Ag. Ag modification can effectively promote the separa-tion of electrons and holes, through which the efficiency of light utilization is improved. The Ag-TiO2 nanotube arrays present excellent photoelectrochemical properties under the xenon lamp illumination, in which the photocurrent, carrier density, pho-toconversion efficiency can reach 0. 28 mA/cm2, 2. 21×1022 cm-3, and 4. 10%, respectively.关键词
TiO2 纳米管阵列/银改性/阳极氧化法/光电化学性能Key words
TiO2 nanotube arrays/Ag modification/anodic oxidation method/photoelectrochemical property分类
通用工业技术引用本文复制引用
于濂清,张志萍,周小岩,董开拓,郝兰众,张亚萍..Ag改性TiO2纳米管阵列的光电化学性能研究[J].中国石油大学学报（自然科学版）,2015,(3):183-187,5.基金项目
国家自然科学基金项目(21476262,51102284) （21476262,51102284）
青岛市科技发展计划项目(14-2-4-108-jch) （14-2-4-108-jch）
中央高校基本业务费专项(14CX05038A) （14CX05038A）
山东省自然科学基金项目(ZR2011EMQ001) （ZR2011EMQ001）
