CTAB辅助水热合成花状氧化锌及其光催化性能

Preparation and photocatalytic characterization of flower-like ZnO via CTAB assisted hydrothermal synthesis

以十六烷基三甲基溴化铵(CTAB)为添加剂,利用低温水热法合成花状纳米氧化锌,研究CTAB对纳米ZnO粉体结构与光学性能的影响.同时考察花状纳米ZnO对甲基橙(MO)溶液的降解效果.研究结果表明,当反应中无CTAB时,所合成产物主要为纳米片状结构;当反应中引入适量的CTAB时,产物则为均匀的纳米花状结构.花状纳米ZnO对甲基橙溶液具有较好的催化活性,当光催化反应进行120min时,对MO降解率高达93%以上.

Flower-like ZnO was synthesized via low temperature hydrothermal synthesis taking CTAB as the additives.The effect of CTAB on crystal structure and optical properties of ZnO nanopowders was investigated.The photocatalytic activity of the ZnO nanopowders toward the decomposition of methyl orange was also investigated.Results show that the ZnO nanosheets were obtained without CTAB,and the products were transformed into the flower-like ZnOnanostructure with appropriate amount CTAB.The flower-like ZnO has good photocatalytic activity for MO solution.And the degradation rate is as high as 93% when the photocatalytic reaction time is 120 min.