论文部分内容阅读
采用液相沉淀法合成了花簇状纳米ZnO,利用FT-IR,UV-DRS,XRD,SEM/EDS,BET等技术对所制备的ZnO进行表征,研究了木素磺酸钙(LS)对纳米ZnO结构和形貌的影响.以甲基橙脱色降解为模型反应,考察了掺杂木素磺酸钙及不同煅烧温度对ZnO的物理结构和光催化脱色性能的影响.结果表明,掺杂木素磺酸钙能明显改变ZnO形貌,改善表面状态,使其比表面积增加,表面产生更多的羟基.煅烧后的木素磺酸钙掺杂ZnO较未掺杂样品具有更好的光催化活性.煅烧温度对光催化剂的晶体结构、表面性能和光催化活性产生较大影响,300℃煅烧处理后样品的结晶度较高,颗粒粒径较细,光催化活性较好.
The ZnO nanocrystals were synthesized by liquid-phase precipitation method. The prepared ZnO was characterized by FT-IR, UV-DRS, XRD, SEM / EDS and BET techniques. Nano-ZnO structure and morphology of the effect of methyl orange decolorization degradation as a model reaction was investigated doped calcium lignosulfonate and different calcination temperature on the ZnO physical structure and photocatalytic decolorization performance.The results show that doping wood Calcium sulphonate can obviously change the morphology of ZnO, improve the surface state, increase the specific surface area and produce more hydroxyl groups on the surface. Calcium-doped calcium lignosulfonate has better photocatalytic activity than undoped sample The calcination temperature has a great effect on the crystal structure, surface properties and photocatalytic activity of the photocatalyst. The calcination temperature after calcination at 300 ℃ is higher, the particle size is smaller and the photocatalytic activity is better.