CuO nanosheet as a recyclable Fenton-like catalyst prepared from simulated Cu(ii) waste effluents by alkaline H2O2 reaction
CuO nanosheet as a recyclable Fenton-like catalyst prepared from simulated Cu(ii) waste effluents by alkaline H2O2 reaction
复制标题
CuO 纳米片作为可回收的类芬顿催化剂，由模拟 Cu(II) 废水通过碱性 H2O2 反应制备
DOI：
10.1039/c8en00930a
复制
发表时间：
2019-01-01
影响因子：
7.3
通讯作者：
Bian, Zhenfeng
中科院分区：
文献类型：
--
作者：
Fang, Mengyuan;Zheng, Ru;Bian, Zhenfeng
含铜废水直接排入水体，不仅对生态环境造成严重危害，而且造成铜资源的浪费。采用绿色方法，以模拟Cu（ii）废水为原料，通过碱性H2 O2反应制备了CuO纳米片。FTIR、EXAFS和XPS分析结果表明，CuO纳米片表面存在过氧化基团，并提出了过氧化铜的形成机理。在可见光照射的辅助下，CuO NS作为一种可循环利用的类Fenton催化剂，在40 min内实现了苯酚的完全降解。此外，类Fenton过程中浸出的铜离子通过碱性H2 O2反应循环利用，溶液中的铜离子浓度降低到1 mg L-1以下，实现了铜的生命周期和类Fenton降解有机污染物。
The direct discharge of copper containing wastewater into the water body not only causes serious harm to the ecological environment, but also results in copper resource wastage. A green approach was successfully developed to prepare CuO nanosheets (NSs) from simulated Cu(ii) waste effluents by alkaline H2O2 reaction. The FTIR, EXAFS and XPS results revealed that peroxide group exists on the surface of the as-prepared CuO nanosheets, and the formation mechanism of copper peroxide has been proposed. Assisted by visible light irradiation, the CuO NS as a recyclable Fenton-like catalyst achieved complete degradation of phenol within 40 min. Moreover, the copper ions leached during the Fenton-like process were recycled via alkaline H2O2 reaction and their concentration in the solution reduced to below 1 mg L-1, therefore realizing a copper life cycle and Fenton-like degradation of organic pollutants.