1、多元钛基合金氧化物纳米管制备 和光催化性能研究进展,Background,TiO2纳米管的修饰,strongly enhanced water splitting ability(undoped TiO2 nanotube) long-term stability (many other doping attempts) more efficient than pure TiO2 nanotubes decorated with RuO2 nanoparticles,TOF-SIMS是通过用一次离子激发样品表面,打出极其微量的二次离子,根据二次离子因不同的质量而飞行到探测器的时间不同来测定离子
2、质量的极高分辨率的测量技术,0.01 at%,0.05 at%,0.1 at%,0.2 at%,0.5 at%,1.2 at%,AM 1.5 solar simulator,0.05 at% Ru-alloy layersat 500 mV applied bias,MoO3 in Self-Organized TiO2 Nanotubes for Enhanced Photocatalytic Activity,Patrik Schmuki et al.,UV light (325 nm),AO7,Enhanced Photoassisted Water Electrolysis Using
3、 Vertically Oriented Anodically Fabricated Ti-Nb-Zr-O Mixed Oxide Nanotube Arrays,Nageh K. Allam, Faisal Alamgir, Mostafa A. El-Sayed,ACS Nano 2010(4),10 V,20 V,15 V,20 V,30 V,40 V,甲酰胺溶液,水溶液,7 h,20 h,0.2 M NH4F + 0.1 M H3PO4,Ti4+,Nb5+,Zr4+,1 M KOH solution under UV (320400 nm, 100 mW/cm2),why,tube l
4、ength can be used to explain the different photoconversion efficiency of the 4 m and 7 m long nanotube,TiO2 nanotube (7 m ): 9.7 % Ti-Nb-Zr-O nanotube (7 m ): 11.4 % Ti-Nb-Zr-O nanotube (4 m ): 6.9 %,distinct tube structure,distinct tube composition,21 2 nm wall thickness,10 2 nm wall thickness,estimated flatband potential,Conclusion,利用多元钛基合金制备纳米管阵列可以实现对TiO2-NTs的原位修饰,具有后修饰不可比拟的优势,TOF-SIMS是一种表面分析的有效手段,可以检测表面极微量成分,计算平带电势的方法,计算光转换效率的方法,