稻草
生物量(生态学)
碳化
硝酸盐
碳纤维
化学
制浆造纸工业
环境化学
材料科学
无机化学
农学
有机化学
吸附
复合数
生物
复合材料
工程类
作者
Jingwen Yu,Yongchao Du,Shuaiqi Liu,Yunliang Liu,Yaxi Li,Yuanyuan Cheng,Peng Cao,Xinyue Zhang,Xinya Yuan,Naiyun Liu,Yixian Liu,Haitao Li
出处
期刊:Catalysts
[MDPI AG]
日期:2024-11-13
卷期号:14 (11): 817-817
标识
DOI:10.3390/catal14110817
摘要
Electrocatalytic nitrate reduction enables the recovery of nitrate from water under mild conditions and generates ammonia for nitrogen fertilizer feedstock in an economical and green means. In this paper, Co/biomass carbon (Co/BC) composite catalysts were prepared by co-carbonization of straw and metal–organic framework material ZIF-67 for electrocatalytic nitrate reduction using hydrothermal and annealing methods. The metal–organic framework structure disperses the catalyst components well and provides a wider specific surface area, which is conducive to the adsorption of nitrate and the provision of more reactive active sites. The introduction of biomass carbon additionally enhances the electrical conductivity of the catalyst and facilitates electron transport. After electrochemical testing, Co/BC-100 exhibited the best performance in electrocatalytic nitrate reduction to ammonia, with an ammonia yield of 3588.92 mmol gcat.−1 h−1 and faradaic efficiency of 97.01% at −0.5 V vs. RHE potential. This study provides a promising approach for the construction of other efficient cobalt-based electrocatalysts.
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