Electronic and active site engineering in Rh metallene <i>via</i> phosphorus and sulfur dual-doping for electrocatalytic sulfion recycling and hydrogen generation

Wang, Hongjing; Liang, Yuqin; Liu, Songliang; Xu, Mu; Yu, Hongjie; Deng, Kai; Wang, Ziqiang; Xu, You; Wang, Liang

doi:10.1039/d3qi00994g

Inorg. Chem. Front.

2023

DOI: 10.1039/d3qi00994g

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Electronic and active site engineering in Rh metallene via phosphorus and sulfur dual-doping for electrocatalytic sulfion recycling and hydrogen generation

Hongjing Wang¹,

Yuqin Liang²,

Songliang Liu³

et al.

Abstract: Coupling thermodynamically favorable sulfion oxidation reaction (SOR) with hydrogen evolution reaction (HER) is a promising approach to simultaneously energy saving and cost-effectively produce high value-added chemicals and hydrogen. The construction...

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Cited by 9 publications

References 51 publications

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Copper–Nickel Oxide Nanosheets with Atomic Thickness for High‐Efficiency Sulfur Ion Electrooxidation Assisted Nitrate Electroreduction to Ammonia

Wang,

Hong,

Shao

et al. 2024

Adv Funct Materials

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The nitrate electroreduction reaction (NO3RR) offers an eco‐friendly alternative to the Haber–Bosch technology for ammonia (NH3) synthesis. However, the complex reaction process and diverse products make efficient NH3 synthesis challenging. Therefore, the rational design and preparation of highly efficient electrocatalysts are crucial for NO3RR. Herein, ultrathin copper‐nickel oxide (Cu‐NiO) nanosheets (Cu‐NiO UTNSs) are synthesized via the cyanogel‐NaBH4 hydrolysis‐reduction method, which are applied for the cathodic NO3 RR to NH3‐assisted with the anodic sulfur ion (S2−) oxidation reaction (SOR) in an electrolyzer. The ultrathin nanosheet structure, the interaction between NiO and Cu, and the formation of oxygen vacancy contribute to generating the rich active sites, regulating the electronic structure, and improving the substance adsorption. Thus, the Cu‐NiO UTNSs exhibit excellent electrocatalytic performance for NO3RR and SOR. As a bifunctional Cu‐NiO UTNSs||Cu‐NiO UTNSs electrolyzer, it can reach 10 mA cm−1 at only 0.1 V for NO3−‐to‐NH3 conversion at the cathode and S2−‐to‐S8 conversion at the anode. This work provides a promising approach for producing value‐added chemicals at a low electrolysis voltage and a strategy for pollutant treatment.

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Copper–Nickel Oxide Nanosheets with Atomic Thickness for High‐Efficiency Sulfur Ion Electrooxidation Assisted Nitrate Electroreduction to Ammonia

Wang,

Hong,

Shao

et al. 2024

Adv Funct Materials

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Partially Amorphous Ru‐Doped CoSe Nanoparticles with Optimized Intermediates Adsorption for Highly Efficient Sulfur Oxidation Reaction

Liu,

Wang,

Wan

et al. 2024

Small

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The application of thermodynamically more favorable sulfur oxidation reaction (SOR) to replace oxygen evolution reaction (OER) in electrocatalytic water electrolysis is an appealing strategy to achieve low‐energy hydrogen production while removing toxic sulfur ions from wastewater. However, the study of SOR catalysts with both activity and stability still faces great challenges. Herein, this study prepares partially amorphous Ru‐doped CoSe (pa‐Ru‐CoSe) nanoparticles for SOR. The doping of Ru keeps Co in an electron‐deficient state, which enhances the adsorption of SOR intermediates and improves the catalytic activity. Meanwhile, the partially amorphous selenide possesses great corrosion resistance to sulfur species, thus ensuring stability in long‐term SOR. In addition, the pa‐Ru‐CoSe requires only 0.566 V to reach a current density of 100 mA cm−2 in the SOR‐HER coupled system and remains stable for 200 h. This work provides a promising partially amorphous strategy for SOR catalysts with both catalytic activity and long‐term stability, enabling hydrogen production with low energy consumption and simultaneous sulfur production.

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Ultrathin nickel sulfide nanosheets for sulfur ion electrooxidation assisted acetonitrile electroreduction

Wang,

Zhang,

et al. 2024

Sci. China Chem.

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Electronic and active site engineering in Rh metallene via phosphorus and sulfur dual-doping for electrocatalytic sulfion recycling and hydrogen generation

Abstract: Coupling thermodynamically favorable sulfion oxidation reaction (SOR) with hydrogen evolution reaction (HER) is a promising approach to simultaneously energy saving and cost-effectively produce high value-added chemicals and hydrogen. The construction...

Cited by 9 publications

References 51 publications

Copper–Nickel Oxide Nanosheets with Atomic Thickness for High‐Efficiency Sulfur Ion Electrooxidation Assisted Nitrate Electroreduction to Ammonia

Copper–Nickel Oxide Nanosheets with Atomic Thickness for High‐Efficiency Sulfur Ion Electrooxidation Assisted Nitrate Electroreduction to Ammonia

Partially Amorphous Ru‐Doped CoSe Nanoparticles with Optimized Intermediates Adsorption for Highly Efficient Sulfur Oxidation Reaction

Ultrathin nickel sulfide nanosheets for sulfur ion electrooxidation assisted acetonitrile electroreduction

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