journal article·2020-07-15

BCN-Encapsulated Nano-nickel Synergistically Promotes Ambient Electrochemical Dinitrogen Reduction

Xue Zhao, Ziqiong Yang, Artem V. Kuklin, Glib V. Baryshnikov, Hans Ågren, Wenjing Liu, Haibo Zhang, Xiaohai Zhou

ACS Applied Materials & Interfaces· Volume 12· Issue 28
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Abstract

The electricity provided by solar or wind power can drive nitrogen in the atmosphere, combining with ubiquitous water to form ammonia, and distributed production methods can alleviate the irreversible damage to the environment caused by the energy-intensive Haber–Bosch process. Here, we have designed a novel Ni-doped BCN heterojunction (S/M-BOPs-1) as a catalyst for the electrochemical nitrogen reduction reaction (NRR). The ammonia yield rate and Faraday efficiency in NRR driven by S/M-BOPs-1 reach up to 16.72 μg–1 h–1 cm–2 and 13.06%, respectively. Moreover, S/M-BOPs-1 still maintains high NRR activity and excellent stability after recycling for eight times and long-time operation of 12 h. Using density functional theory calculations, we reveal a possible NRR path for N2 to NH3 on Ni, BCN, and the S/M-BOPs-1 composite surfaces. The interaction between the BCN matrix and Ni nanoparticles promotes a synergetic effect for the electrochemical NRR efficiency due to the partial electron transfer from the Ni particles to BCN that inhibits hydrogen evolution reaction and decreases the rate-determining step on Ni surfaces toward NRR by ∼1.5 times. Therefore, efficient NRR performance can be achieved by tuning the electronic properties of non-noble metals via the formation of a heterointerface.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Ammonia Synthesis and Nitrogen Reduction · Electrocatalysts for Energy Conversion · Advanced Photocatalysis Techniques

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

Affiliations

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China

Division of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden

Department of Science and Innovations, Siberian Federal University, 79 Svobodny Avenue, Krasnoyarsk 660041, Russia

Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, Cherkasy 18031, Ukraine

College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China

Department Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, Nanjing 211800, P.R. China

National Demonstration Center for Experimental Chemistry, Wuhan University, Wuhan 430072, P.R. China

Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, P.R. China

Funding

Ministry of Education of the People's Republic of China · Air Force Office of Scientific Research · Stiftelsen Olle Engkvist Byggm?stare · Wuhan University · Ministry of Education and Science of Ukraine

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