摘要
采用溶胶凝胶法以TaCl5、醋酸钠和柠檬酸为原料,在退火温度为570610℃下制备NaTaO3薄膜。通过X射线衍射、场发射扫描电子显微镜及能量色散X射线光谱表征薄膜的组成、结构以及形貌。研究了退火温度对薄膜组成、形貌及光催化活性的影响。结果表明在退火温度为570610℃之间均能合成出纯相的NaTaO3薄膜,薄膜表面平整,随着温度的升高,薄膜的结晶性变好。610℃时制备的薄膜结晶性最好,紫外光照射100 min后降解率达到51%。
NaTaO_2 films were synthesized by sol-gel method with TaCl_5,CH_3COONa and citric acid as raw materials at the annealing temperatures of 570~610 ℃.The composition,structure and morphology of NaTaO_2 films were characterized by X-ray diffraction(XRD),field emission scanning electron microscope(FE-SEM) and energy dispersive X-ray spectroscopy(EDS).The effects of annealing temperature on composition,morphology and photocatalytic activities of NaTaO_3 films were studied.The results indicate that the pure phase NaTaO_3 films can be synthesized at the annealing temperature between 570 ℃ and 610 ℃.The surface of the films is even.The crystaUinity is enhanced with the increase of the annealing temperature.NaTaO_3 films annealed at610 ℃ have the optimal crystaUinity,and the degradation rate reaches to 51%after 100 min under the ultraviolet light irradiation.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2012年第S3期611-614,共4页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(51172135)
The Program of Shaanxi Natural Science(2010JM6013)
National Youth Science Foundation(51002092)
The Graduate Innovation Found of Shaanxi University of Science and Technology(SUST-A04)
