Cu-MOF derived two-dimensional copper-carbon nanosheets for efficient nitrate reduction

被引：3

作者：

Lin, Xiaoyu ^{[1
]}

Qiu, Chunhua ^{[4
]}

Zheng, Yichen ^{[5
]}

Xue, Jinhang ^{[3
]}

Ge, Yongjie ^{[3
]}

Shen, Yanqiong ^{[2
]}

Li, Qipeng ^{[2
]}

Qian, Jinjie ^{[3
]}

机构：

[1] State Grid Wencheng Elect Power Supply Co, Wenzhou 325300, Zhejiang, Peoples R China

[2] Zhaotong Univ, Coll Chem & Chem Engn, Zhaotong 657000, Yunnan, Peoples R China

[3] Wenzhou Univ, Coll Chem & Mat Engn, Key Lab Carbon Mat Zhejiang Prov, Wenzhou 325035, Zhejiang, Peoples R China

[4] Wencheng Changtai Elect Power Co Ltd, Wenzhou 325300, Zhejiang, Peoples R China

[5] Huazhong Univ Sci & Technol, Coll Integrated Circuits, Wuhan 430074, Hubei, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1008卷

关键词：

Metal-organic framework; Carbon nanomaterial; CuCl nanocube; Nitrate reduction reaction; Zinc-nitrate battery;

D O I：

10.1016/j.jallcom.2024.176602

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In recent years, the strategy of reducing ammonia (NH3) from nitrate-related sources such as industrial wastewater driven by clean energy sources has garnered significant attention. Previous studies have shown that Cubased species can effectively catalyze nitrate reduction reaction (NO3RR), but the reaction intermediates tend to aggregate on the surface of catalysts, resulting in low Faraday efficiency. In this study, two-dimensional porous carbon nanosheets were successfully prepared through direct pyrolysis of a mixture of ZnCu-BTC crystal and FeCl3 salt. Interestingly, cube-shaped CuCl nanoparticles were easily precipitated from the MOF-derived carbon surface during acid etching process. The resulting CuCl-CNS exhibited good NO3RR performance, achieving an NH3 yield of 96.9 % and 292.5 mu mol h(-1) cm(-2) at -0.60 V versus reversible hydrogen electrode. Moreover, the assembled zinc-nitrate battery revealed a peak power density of 4.73 mW cm(-2) and long-term cycle stability. This work provides valuable insights into the development of MOF-derived Cu-based nanocomposites for effective nitrate reduction.

引用

页数：6