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氢化处理TiO2纳米管是一种简单而又有效地提高其光解水制氢效率的方法。通过采用FE-SEM、TEM、XRD及XPS等研究,在大气气氛500℃热处理后,接着经300℃氢化处理后,获得了由以锐钛矿组成的TiO2纳米管壁,和在纳米管内壁上高度无序的表面层组成的双相结构的TiO2纳米管阵列,且在纳米管表面形成了Ti-OH能带。光催化分解水试验表明,在光强为100 mW/cm2的模拟太阳光照射下氢化处理后的TiO2纳米管光阳极的光电流密度可达4.88mA/cm2,较未氢化处理的样品提高了约4倍。
Hydrogenation of TiO2 nanotubes is a simple and effective way to improve the efficiency of hydrogen production of photolysis water. Through the use of FE-SEM, TEM, XRD and XPS and other studies, after the heat treatment at 500 ℃ in the atmosphere, followed by hydrogenation at 300 ℃, obtained by the anatase TiO2 nanotube wall, and on the inner wall of the nanotube Highly disordered surface layer consisting of two-phase structure of TiO2 nanotube arrays, and nanotubes Ti-OH band formed on the surface. Photocatalytic decomposition of water test showed that the photo-current density of TiO2 nanotubes photoanode under hydrothermal treatment was 4.88mA / cm2 under simulated solar irradiation with light intensity of 100 mW / cm2, which was about 90% higher than that of the unhydrogenated samples 4 times.