一种多孔ZnO和ZnO/Ag纳米自支持膜的制备方法技术

本发明专利技术属于纳米材料制备和性能研究技术领域，具体涉及一种制备ZnO和ZnO/Ag纳米自支持膜及用于有机染料光催化降解处理的方法。其步骤如下：首先在含有乙酸锌和六亚甲基四胺的水溶液中制备碱式碳酸锌纳米带前躯体，然后将所制备的前躯体通过真空抽滤除去反应母液并在滤纸表面形成一层均匀的膜，干燥后即可将滤纸和前躯体膜剥离，从而得到碱式碳酸锌纳米带前躯体自支持膜。煅烧自支持膜，得到了多孔的ZnO纳米自支持膜。在前躯体制备过程中加入适量硝酸银，在纳米带表面原位生成了Ag纳米粒子并最终形成ZnO/Ag纳米复合自支持膜。本方法低耗、环保、易于实现扩大化，具有工业化批量生产的前景。

Method for preparing porous ZnO and ZnO/Ag nano self supporting film

The invention belongs to the technical field of nano material preparation and performance research, in particular relates to a method for preparing ZnO and ZnO/Ag nano self supporting film and a method for photocatalytic degradation of organic dye. The steps are as follows: first in aqueous solution containing zinc acetate and six methylene four amine was prepared with nano zinc carbonate precursor, then the precursor was prepared by vacuum filtration to remove the reaction solution and form a uniform film on the surface of filter paper, filter paper and drying can be the precursor to membrane peeling. Get the basic zinc carbonate precursor with nano self support membrane. The porous ZnO nano self supporting film was obtained by calcination of the support film. In the process of preparation of the precursor, silver nitrate was added to the surface of the nano strip, and Ag nanoparticles were formed in situ. Finally, the ZnO/Ag nanocomposite self support membrane was formed. The method has the advantages of low consumption, environmental protection and easy expansion, and has the prospect of industrial batch production.

【技术实现步骤摘要】

【技术保护点】
一种多孔ZnO纳米自支持膜的制备方法，其特征在于步骤如下：（1）碱式碳酸锌纳米带前躯体的制备：量取100?mL的去离子水，加入1.47－5.48?g二水乙酸锌或硫酸锌或氯化锌，待乙酸锌或硫酸锌或氯化锌完全溶解后，加入0.83－3.41?g?六亚甲基四胺并使之完全溶解后，将反应容器置于50－70℃的恒温环境中反应12?24小时，得到碱式碳酸锌纳米带的絮状悬浮液；（2）碱式碳酸锌纳米带前躯体自支持膜的制备：将步骤（1）方法所制得的碱式碳酸锌纳米带的絮状悬浮液缓慢而均匀的倒入事先铺有滤纸的真空抽滤漏斗中，在倾倒的同时启动真空抽滤；抽滤结束后将潮湿的滤纸与前躯体膜一同取出置于环境温度下自然干燥或者于40－60℃干燥箱中快速干燥；完全干燥后将滤纸剥离即得到碱式碳酸锌纳米带前躯体自支持膜；（3）将步骤（2）方法所制备的干燥后的碱式碳酸锌纳米带前躯体自支持膜置于200－600℃的马弗炉中煅烧3－12小时，即可得到多孔的由纳米粒子组成的ZnO自支持膜。

【技术特征摘要】

【专利技术属性】
技术研发人员：董丽红，战佩英，
申请(专利权)人：通化师范学院，
类型：发明
国别省市：