摘要
本文先用直流磁控溅射法分别在ITO导电玻璃基底上沉积TiO2和TiN二种纳米薄膜,再在500℃的马弗炉氧化性气氛下进行退火处理,制得TiO2/ITO和TiO2-xNx/ITO薄膜电极。样品的结构和成分用XRD和XPS进行表征。然后分别采用pH=10的Na2CO3/NaHCO3缓冲溶液和1M KOH水溶液作为电解液,在三电极体系中用线性扫描伏安法(LSV)和电流时间曲线(i-t)法测定二种薄膜电极在光照和暗态下的光电化学性能。研究结果表明:以1M KOH水溶液作为电解液比pH=10的Na2CO3/NaHCO3缓冲溶液作为电解液更有利于样品发挥其光催化活性;同时,TiO2-xNx/ITO薄膜电极比TiO2/ITO具有更好的光电化学性能。
Two kinds of film electrodes,TiO2/ITO and TiO2-xNx/ITO were prepared by depositing TiO2 and TiN on ITO substrates using dc reactive magnetron sputtering and then annealed in an oxidative furnace at 500℃.The crystal structure and chemical composition of the film electrodes were characterized by X-ray diffractometry（XRD） and X-ray photoelectron spectroscopy（XPS）.The photoelectrochemical properties of the electrodes were analyzed by testing their LSV and i-t curves under light and in dark,with the two solutions of Na2CO3/NaHCO3（pH=10） and 1M KOH as electrolytes,respectively,for comparation.It shows that the electrolyte of 1M KOH was better for TiO2 and TiO2-xNx photoelectrochemical properties than Na2CO3/NaHCO3（pH=10）,and TiO2-xNx/ITO has better photoelectrochemical properties than TiO2/ITO.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2011年第5期684-687,663,共5页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(20673100)
关键词
电解液
磁控溅射
TiO2薄膜电极
光电化学性能
electrolyte
magnetron sputtering
TiO2 film electrode
photoelectrochemical properties
