摘要
用阳极氧化法制备高度有序的TiO_2纳米管阵列(TiO_2-NTAs)、浸渍法后退火的方法制备WO_3量子点修饰TiO_2纳米管阵列(WO_3/TiO_2-NTAs)。用SEM,XRD和XPS对管层的成分和形貌进行了分析和表征;紫外-可见光谱结果表明,生成的WO_3/TiO_2-NTAs的吸收边延长到485 nm可见光范围。光催化降解甲基橙溶液实验结果表明,在90 min内,WO_3/TiO_2-NTAs(99.61%)比纯TiO_2-NTAs(46.91%)具有更好的光催化性能。
Highly ordered TiO2 nanotube arrays（ TiO2-NTAs） were obtained through reanodization. WO3 quantum dots（ QDs） were assembled onto the crystallized TiO2-NTAs by wet impregnation and subsequent annealing treatment. The digital microscope, field-emission scanning electron microscope（ SEM）, X-ray diffractometer（ XRD） and X-ray photoelectron spectrometer（ XPS） were used for composition and structure analysis of the tubular layers. The ultraviolet-visible（ UV-vis） absorption spectra showed that the WO3/ TiO2-NTAs could induce the red-shift of absorption edge to 485 nm and exhibited a broad absorption band in the visible region,which extends the scope of absorption spectrum and help to improve the photocatalytic degradation efficiency. The photocatalytic experiment results for MO revealed that WO3/ TiO2-NTAs（ 99. 61%） possessed higher photocatalytic activities toward methyl orange than pure TiO2-NTAs（ 46. 91%） in 90 min.
出处
《分析试验室》
CAS
CSCD
北大核心
2016年第5期510-514,共5页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金(51502005)
安徽省高等学校自然科学研究项目(KJ2015A210
KJ2015A200
KJ2013B282)资助
