journal article·2022-04-20

High-Performance Electrochemical Nitrate Reduction to Ammonia under Ambient Conditions Using a FeOOH Nanorod Catalyst

Qin Liu, Qian Liu, Lisi Xie, Yuyao Ji, Tingshuai Li, Bing Zhang, Na Li, Bo Tang, Yang Liu, Shuyan Gao, Yonglan Luo, Lingmin Yu, Qingquan Kong, Xuping Sun

ACS Applied Materials & Interfaces· Volume 14· Issue 15
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Abstract

Electrocatalytic nitrate reduction is promising as an environmentally friendly process to produce high value-added ammonia with simultaneous removal of nitrate, a widespread nitrogen pollutant, for water treatment; however, efficient electrocatalysts with high selectivity are required for ammonia formation. In this work, FeOOH nanorod with intrinsic oxygen vacancy supported on carbon paper (FeOOH/CP) is proposed as a high-performance electrocatalyst for converting nitrate to ammonia at room temperature. When operated in a 0.1 M phosphate-buffered saline (PBS) solution with 0.1 M NaNO3, FeOOH/CP is able to obtain a large NH3 yield of 2419 μg h–1 cm–2 and a surprisingly high Faradic efficiency of 92% with excellent stability. Density functional theory calculation demonstrates that the potential-determining step for nitrate reduction over FeOOH (200) is *NO2H + H+ + e– → *NO + H2O.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Ammonia Synthesis and Nitrogen Reduction · Advanced Photocatalysis Techniques · Caching and Content Delivery

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, Shaanxi, China

Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China

Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China

Department of Ecology and Environment of Sichuan Province, Leshan Environmental Monitoring Center Station of Sichuan Province, Leshan 614000, Sichuan, China

College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China

School of Materials Science and Engineering, Henan Normal University, Xinxiang 453007, Henan, China

Funding

Education Department of Shaanxi Province · National Natural Science Foundation of China · Shaanxi Provincial Science and Technology Department

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