摘要
以硝酸锌和硬脂酸为主要原料合成了纳米氧化锌(nano-Zn O),并在后续处理过程中采用正丁醇淬火对氧化锌表面进行改性。通过红外吸收光谱、X射线衍射、紫外-可见漫反射等手段对改性前后样品进行了表征。结果表明,改性纳米氧化锌具有较好的疏水性,可长期悬浮于水的表面,有利于直接用于太阳光催化降解污水。将甲基橙溶液作为模拟废水,考察纳米Zn O在紫外灯和太阳光下的光催化活性。结果表明,改性纳米Zn O比未改性纳米氧化锌具有更好的光催化降解活性。
Nano-ZnO was prepared using Zn（NO3）2？6H2O and stearic acid as the precursors, and was treated by butyl alcohol quenching. Both the modified and unmodified nano-ZnO samples were characterized by XRD and UV-vis. The experimental results indicated that the modified compound was hydrophobic and could suspend on the surface of water for a long time, which has a potential to be applied in wastewater disposal. The photo-catalytical performance of nano-ZnO was evaluated us-ing methyl orange solution under UV light and sunlight. The result showed that the modified nano-ZnO exhibited a much better photo-catalytic activity, compared to the unmodified nano-ZnO under the same conditions.
出处
《湖北农业科学》
2015年第24期6338-6341,共4页
Hubei Agricultural Sciences
基金
黄冈师范学院教学团队项目(2014CT25)
黄冈师范学院大学生创新活动项目(zx201414)
国家自然科学基金项目(21307038)
关键词
纳米氧化锌
光催化
表面改性
正丁醇
nano-ZnO
photocatalysis
surface modification
butyl alcohol
