ZrO2/C Nanosphere Enables High‐Efficiency Nitrogen Reduction to Ammonia at Ambient Conditions. Issue 17 (8th July 2022)

• Record Type: Journal Article
• Authors: Dong, Shuyue; Xia, Jiaojiao; Zhu, Hexin; Du, Xiangning; Gu, Yang; Liu, Qian; Luo, Yonglan; Kong, Qingquan; Guo, Haoran; Li, Tingshuai; Traversa, Enrico
• Is Part Of: ChemCatChem. Volume 14:Issue 17(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-07-08
• Subjects: ammonia -- calculation -- catalyst -- Faradaic efficiency -- nitrogen; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.202200458
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: Electrochemical synthesis of ammonia via nitrogen reduction reaction is a rational route to save energy and relieve pollution compared to the traditional Haber‐Bosch process. In this report, ZrO2 nanosphere derived from thermolysis of Zr‐based biphenyl‐4, 4′‐dicarboxylic acid MOFs (ZrO2 /C) as a non‐noble metal catalyst with large specific surface area and porous structure is proposed to fix nitrogen to ammonia at ambient conditions. Such catalyst achieves Faradaic efficiency of 11.86 % and a NH3 yield rate of 10.72 μg h −1 mg −1 cat. at −0.6 V vs. the reversible hydrogen electrode in 0.1 M Na2 SO4 . First‐principles calculations confirm the alternating reaction at the catalyst surface. Abstract : ZrO2 /C as a metal‐saving NRR catalyst with large specific surface area and porous structure can achieve a Faradaic efficiency of 11.86 % and a NH3 yield rate of 10.72 μg h −1 mg −1 cat. cat at −0.6 V vs. the reversible hydrogen electrode in 0.1 M Na2 SO4 .