氮和镍掺杂纳米TiO2复合粉体的制备及其光催化性能

以Ti（SO4）2，NiSO4·6H2O，N，N-二甲基甲酰胺等为原料，采用水热合成法制备氮和镍掺杂的纳米TiO2复合粉体，通过XRD对其进行了表征，并以10mg／L的甲基橙溶液为底物，测定了其太阳光催化性能。结果表明，氮和镍掺杂能提高纳米TiO2的光催化性能，当氮和镍掺杂摩尔分数均为2．0％，焙烧温度为600℃，甲基橙溶液的pH值为5时，光催化性能最高，甲基橙溶液太阳光照射5h后降解率达到98．1％。

Preparation and Photocatalytic Activity of N and Ni Codoped TiO2 Nanopowder

N and Ni co -doped TiO2 nanopowder was prepared in different proportions by hydrothermal method with TiSO4, NiSO4 · 6H2O and N,N- dimethyl formamide （DMF） as raw materials. The obtained samples were characterized by XRD. The photocatalytic degradation of 10 mg/L methyl orange solution using N and Ni co -doped TiO2 nanopowder as catalyst under sunshine was investigated. The results show that N - Ni codoped TiO2 nanopowder has much higher catalytic activity than pure TiO2. The N -Ni codoped TiO2 nanopowder has the highest photocatalytie activity when the doping fraction of N and Ni is 2%, the calcined temperature is 600 ℃, the pH of methyl orange solution is 5, the degradation rate reached 98.1% under sun- shine for 5 hours.