Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, University of New South Wales, Sydney, 2052, Australia.
Environ Sci Pollut Res Int. 2018 Oct;25(28):28594-28600. doi: 10.1007/s11356-018-2850-0. Epub 2018 Aug 9.
This paper describes a clean approach of waste-cleaning waste. Two-dimensional (2D) ZnO porous nano-sheets were synthesized from end-of-life zinc-carbon batteries via a simple homogeneous precipitation-calcination route, and the as-synthesized product was applied as photocatalyst for the purpose of photodegradation of methylene blue/MB aqueous solution under UV-Vis irradiation. Precipitation at ambient temperature resulted in the formation of the crystalline phase of zinc hydroxide nitrate hydrate [Zn(OH)(NO)(HO)], which was then transformed to ZnO through calcination. FE-SEM studies revealed the resulting ZnO had the morphology of porous nano-sheets with thickness of up to 100 nm. The photocatalytic activity tests proved that the batteries-derived ZnO porous nano-sheets can be a promising candidate for photodegradation of organic pollutant in industrial waste water. The results presented here confirm a possibility of utilization waste batteries as a resource of photodegrading MB in wastewater treatment, hereby an opportunity to deliver environmental benefits. Graphical abstract.
本文描述了一种清洁的废物清理方法。通过简单的均相沉淀-煅烧法，从废旧锌碳电池中合成了二维（2D）氧化锌多孔纳米片，并将所合成的产物用作光催化剂，用于在 UV-Vis 照射下光降解亚甲基蓝/MB 水溶液。在环境温度下沉淀导致形成结晶相的硝酸锌水合物[Zn(OH)(NO)(HO)]，然后通过煅烧转化为 ZnO。FE-SEM 研究表明，所得到的 ZnO 具有多孔纳米片的形态，厚度可达 100nm。光催化活性测试证明，电池衍生的 ZnO 多孔纳米片可作为光降解工业废水中有机污染物的有前途的候选物。这里呈现的结果证实了将废旧电池用作废水处理中光降解 MB 的资源的可能性，从而提供了环境效益的机会。
