Hydrophilic functionalization of rhodium metallene for saving-energy hydrogen production and sulfur recovery

Wang, Ziqiang; Yang, Guanghui; Tian, Pengjun; Li, Xinmiao; Deng, Kai; Yu, Hongjie; Xu, You; Wang, Hongjing; Wang, Liang

doi:10.1016/j.cej.2023.145147

Chemical Engineering Journal

2023

DOI: 10.1016/j.cej.2023.145147

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Hydrophilic functionalization of rhodium metallene for saving-energy hydrogen production and sulfur recovery

Ziqiang Wang,

Guanghui Yang,

Pengjun Tian

et al.

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2024

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Cited by 3 publications

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Advances in Electrocatalyst Design and Mechanism for Sulfide Oxidation Reaction in Hydrogen Sulfide Splitting

Yu,

Deng,

et al. 2024

Adv Funct Materials

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Sulfide oxidation reaction (SOR) is a semi‐reaction for the electrochemical decomposition of hydrogen sulfide. Combining SOR with the hydrogen evolution reaction (HER) allows for the simultaneous splitting of hydrogen sulfide (H2S) to produce green hydrogen, reducing energy input and environmental pollution. However, the phenomenon of sulfur passivation on the anode leads to catalyst deactivation, posing a bottleneck in developing efficient SOR. Electrocatalysts with decent performance and sulfur‐tolerance play a central role in the application of SOR. Here, recent progress on electrocatalysis mechanisms and catalyst design strategies of SOR are summarized. A summary of recent progress is made in materials such as alloys, metal oxides, metal sulfides, metal selenides, and heterostructures as SOR catalysts. Additionally, some valuable design and modulation strategies are highlighted and included. Finally, this review offers an outlook on the future directions in this emerging field.

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Advances in Electrocatalyst Design and Mechanism for Sulfide Oxidation Reaction in Hydrogen Sulfide Splitting

Yu,

Deng,

et al. 2024

Adv Funct Materials

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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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Energy-saving hydrogen production by seawater electrolysis coupling tip-enhanced electric field promoted electrocatalytic sulfion oxidation

Li,

Wang,

Cao

et al. 2024

Nat Commun

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Hydrogen production by seawater electrolysis is significantly hindered by high energy costs and undesirable detrimental chlorine chemistry in seawater. In this work, energy-saving hydrogen production is reported by chlorine-free seawater splitting coupling tip-enhanced electric field promoted electrocatalytic sulfion oxidation reaction. We present a bifunctional needle-like Co3S4 catalyst grown on nickel foam with a unique tip structure that enhances the kinetic rate by improving the current density in the tip region. The assembled hybrid seawater electrolyzer combines thermodynamically favorable sulfion oxidation and cathodic seawater reduction can enable sustainable hydrogen production at a current density of 100 mA cm−2 for up to 504 h. The hybrid seawater electrolyzer has the potential for scale-up industrial implementation of hydrogen production by seawater electrolysis, which is promising to achieve high economic efficiency and environmental remediation.

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Hydrophilic functionalization of rhodium metallene for saving-energy hydrogen production and sulfur recovery

Cited by 3 publications

References 54 publications

Advances in Electrocatalyst Design and Mechanism for Sulfide Oxidation Reaction in Hydrogen Sulfide Splitting

Advances in Electrocatalyst Design and Mechanism for Sulfide Oxidation Reaction in Hydrogen Sulfide Splitting

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

Energy-saving hydrogen production by seawater electrolysis coupling tip-enhanced electric field promoted electrocatalytic sulfion oxidation

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