论文部分内容阅读
利用溶胶凝胶法,以钛酸四正丁酯为原料,尿素为氮源,合成N掺杂的Ti O2纳米颗粒(记作XNTi O2NP,其中X为合成时原料中N与Ti的原子比),并以此为原料利用微波法合成N掺杂的Ti O2纳米管(记作XNTi O2NT),并在相同铂载量、光照条件下评价催化剂的光催化制氢活性,研究不同掺杂比对催化剂活性的影响,找出最佳掺杂比。通过现代测试技术(DRS、TEM、XRD、XPS、ICP和EAI等),对催化剂的结构进行表征。实验结果表明:在不同N掺杂比的催化剂中,3NTi O2NT的产氢活性较高,其吸收边约为543.4 nm,在纯水和加牺牲剂(5%甲醇水溶液)的条件下的产氢速率为别为17.11μmol/(g·h)和415.40μmol/(g·h)。
Using sol-gel method, using tetra-n-butyl titanate as raw material and urea as nitrogen source, N-doped Ti02 nanoparticles (denoted as XNTi O2NP, where X is the atomic ratio of N to Ti in the starting material) , And using this as raw material to synthesize N-doped Ti02 nanotubes (denoted as XNTi O2NT) by microwave method. The photocatalytic hydrogen production activity of the catalyst was evaluated under the same platinum loading and illumination conditions, and the effects of different doping ratios The influence of catalyst activity, find the best doping ratio. The structure of the catalyst was characterized by modern testing techniques (DRS, TEM, XRD, XPS, ICP and EAI). The experimental results show that the hydrogen production activity of 3NTi O2NT is high with different N doping ratio, and the absorption edge is about 543.4 nm. Hydrogen production in pure water and sacrificial agent (5% methanol aqueous solution) The rates were 17.11 μmol / (g · h) and 415.40 μmol / (g · h) respectively.