《氧化钛纳米管阵列》PPT课件.ppt

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 layers at 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 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 length 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