Regulating Active Hydrogen Supply Over Cu Clusters‐Interspersed MoS 2 /MoO 2 Nanosheets for Efficient Urea Electrosynthesis
Source abstract
Abstract
Abstract Electrochemical urea synthesis is critically restricted by insufficient supply of active hydrogen ( * H) for the hydrogeneration of CO 2 and nitrate (NO 3 − ). Here, a tandem sites catalyst is designed by anchoring Cu clusters on MoS 2 /MoO 2 nanosheets (Cu‐MoS 2 /MoO 2 ), with the Cu sites activating CO 2 and NO 3 − and the Mo sites dissociating water to produce * H. In situ spectroscopic analysis and theoretical calculations reveal that the sufficient * H supply greatly promotes intermediate hydrogenation, thus enhancing C─N coupling for urea synthesis. Consequently, the Cu‐MoS 2 /MoO 2 catalyst displays significantly enhance performance of urea synthesis from CO 2 and NO 3 − , achieving a high yield of 117.5 mmol h −1 g cat. −1 at −0.6 V versus the reversible hydrogen electrode (RHE). Besides, stable electrocatalytic urea production is maintained for 68 h without a decline in yield or Faradaic efficiency. This work provides a meaningful perspective on modulating active hydrogen to promote urea production.
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Research context
OpenAlex topics: Ammonia Synthesis and Nitrogen Reduction · Electrocatalysts for Energy Conversion · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China
National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China
Department of Electronic Materials Engineering Research School of Physics The Australian National University Australian Capital Territory Canberra 2601 Australia
China International S&T Cooperation Base for Advanced Energy and Environmental Materials & Anhui Provincial International S&T Cooperation Base for Advanced Energy Materials Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei 230009 China
Funding
National Natural Science Foundation of China · China Postdoctoral Science Foundation · Fundamental Research Funds for the Central Universities · Higher Education Discipline Innovation Project
References (89)
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