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INORGANIC CHEMISTRY FRONTIERS
Volume -, Issue -, Pages -Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3qi00994g
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In this study, a dual-nonmetal-doping strategy is proposed to construct S and P dual-doped Rh metallene (SP-Rhlene). SP-Rhlene, with the combined advantages of dual heteroatom doping and an ultrathin nanosheet structure, exhibits outstanding HER and SOR activities. This work provides a directive strategy for energy-saving hydrogen production and environmentally friendly sulfur recovery.
Coupling the thermodynamically favorable sulfion oxidation reaction (SOR) with the hydrogen evolution reaction (HER) is a promising approach to simultaneously save energy and cost-effectively produce high value-added chemicals and hydrogen. The construction of efficient bifunctional catalysts for SOR-HER electrocatalysis is of significance yet challenging. Here, we propose a dual-nonmetal-doping strategy to construct S and P dual-doped Rh metallene (SP-Rhlene). Benefiting from the combined advantages of dual heteroatom doping and an ultrathin nanosheet structure, SP-Rhlene with a large electrochemical active area and an optimized electronic structure exhibits outstanding HER and SOR activities. A two-electrode system based on optimized SP-Rhlene only needs a cell voltage of 0.385 V at 10 mA cm(-2) to generate H-2, while transforming S2- into sulfur powder, which further reduces the cost of hydrogen production and protects the ecological environment. This work provides a directive strategy for the rational construction of dual heteroatom doped metallene for energy-saving hydrogen production and environmentally friendly sulfur recovery.
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