期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 430, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2022.128351
关键词
Co-doped malachite; Nitrate electrochemical reduction; Nitrogen selectivity; Total nitrogen removal efficiency; Reaction mechanism
资金
- National Natural Science Foundation of China [21975106, 31971508]
- MOE [B13025]
- SAFEA [B13025]
In this study, a novel electrocatalyst was designed and prepared for efficient nitrate removal in wastewater. The electrocatalytic performance was achieved by regulating the electronic structure and the adsorption/desorption of the intermediate.
The development of high-efficient and cost-effective electrocatalysts is crucial to remove nitrate pollutant in wastewater. Herein, we design and prepare mesoporous Co-doped Cu-2(OH)(2)CO3 malachite nanosheets as an electrocatalyst toward highly efficient nitrate reduction using a facile CO2 bubble-assisted coprecipitation synthesis. The electrocatalytic performance is subject to the Co/Cu ratio of this malachite. Remarkably, compared with the pristine monometal Cu or Co-based electrocatalyst, the optimal electrocatalyst, 0.3Co@Cu-2(OH)(2)CO3, displays fast and highly efficient removal capacity of nitrate with an impressive high total nitrogen (TN) removal of 8628.99 mg N g(-1) (coca) (398.79 mg N g(cat)(-1) h(-1)), N-2 selectivity of 97.11% as well as negligible nitrite product at 100 mg L-1 NO3--N and 2000 mg L-1 Cl- neutral electrolyte. Above all, high total nitrogen removal efficiency (81.92%) and chemical oxygen demand (73.74%) in actual wastewater. Its excellent electrocatalytic performance is achieved by regulating the electronic structure and the adsorption/desorption of the intermediate. This study discovers a new type of electrode materials for nitrate removal in wastewater.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据