Atomically dispersed Ni–Ru–P interface sites for high-efficiency pH-universal electrocatalysis of hydrogen evolution

Wu, Konglin; Sun, Kaian; Liu, Shoujie; Cheong, Weng‐Chon; Chen, Zheng; Zhang, Chao; Pan, Yuan; Cheng, Yuansheng; Zhuang, Zewen; Wei, Xian‐Wen; Wang, Yu; Zheng, Lirong; Zhang, Qinghua; Wang, Dingsheng; Peng, Qing; Chen, Chen; Li, Yadong

doi:10.1016/j.nanoen.2020.105467

Cited by 119 publications

(61 citation statements)

References 50 publications

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“…The results are consistent with the absence of Co‐Co bonds in the structure of CoP. The WT‐EXAFS results corroborate the EXAFS analysis in that Ru is indeed atomically dispersed in the Ru 1 CoP/CDs [12b] . As described below, the localized structure perturbation after Ru incorporation is related to the enhanced catalytic activity.…”

Section: Resultssupporting

confidence: 85%

Single Atom Ruthenium‐Doped CoP/CDs Nanosheets via Splicing of Carbon‐Dots for Robust Hydrogen Production

Song

Tang

et al. 2021

Angewandte Chemie

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Ultrathin two‐dimensional catalysts are attracting attention in the field of electrocatalytic hydrogen evolution. This work describe a composite material design in which CoP nanoparticles doped with Ru single‐atom sites supported on carbon dots (CDs) single‐layer nanosheets formed by splicing CDs (Ru1CoP/CDs). Small CD fragments bore abundant functional groups, analogous to pieces of a jigsaw puzzle, and could provide a high density of binding sites to immobilize Ru1CoP. The single‐particle‐thick nanosheets formed by splicing CDs acted as supports, which improved the conductivity of the electrocatalyst and the stability of the catalyst during operation. The Ru1CoP/CDs formed from doping atomic Ru dispersed on CoP showed very high efficiency for the hydrogen evolution reaction (HER) over a wide pH range. The catalyst prepared under optimized conditions displayed outstanding stability and activity: the overpotential for the HER at a current density of 10 mA cm−2 was as low as 51 and 49 mV under alkaline and acidic conditions, respectively. Density functional theory calculations showed that the substituted Ru single atoms lowered the proton‐coupled electron transfer energy barrier and promoted H−H bond formation, thereby enhancing catalytic performance for the HER. The findings open a new avenue for developing carbon‐based hybridization materials with integrated electrocatalytic performance for water splitting.

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Section: Resultssupporting

confidence: 85%

Single Atom Ruthenium‐Doped CoP/CDs Nanosheets via Splicing of Carbon‐Dots for Robust Hydrogen Production

Song

Tang

et al. 2021

Angewandte Chemie

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“…1 e), further confirmed by XRD and TEM results. According to the difference of the atomic number of elements, the bright white spots in the NPC matrix could attribute to the atomically dispersed Cu (marked with red circles) [ 42 , 43 ]. Further HAADF-STEM ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Copper single-atom catalysts with photothermal performance and enhanced nanozyme activity for bacteria‐infected wound therapy

Wang

Shi

Zha

et al. 2021

Bioactive Materials

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Nanozymes have become a new generation of antibiotics with exciting broad-spectrum antibacterial properties and negligible biological toxicity. However, their inherent low catalytic activity limits their antibacterial properties. Herein, Cu single-atom sites/N doped porous carbon (Cu SASs/NPC) is successfully constructed for photothermal-catalytic antibacterial treatment by a pyrolysis-etching-adsorption-pyrolysis (PEAP) strategy. Cu SASs/NPC have stronger peroxidase-like catalytic activity, glutathione (GSH)-depleting function, and photothermal property compared with non-Cu-doped NPC, indicating that Cu doping significantly improves the catalytic performance of nanozymes. Cu SASs/NPC can effectively induce peroxidase-like activity in the presence of H 2 O 2 , thereby generating a large amount of hydroxyl radicals (•OH), which have a certain killing effect on bacteria and make bacteria more susceptible to temperature. The introduction of near-infrared (NIR) light can generate hyperthermia to fight bacteria, and enhance the peroxidase-like catalytic activity, thereby generating additional •OH to destroy bacteria. Interestingly, Cu SASs/NPC can act as GSH peroxidase (GSH-Px)-like nanozymes, which can deplete GSH in bacteria, thereby significantly improving the sterilization effect. PTT-catalytic synergistic antibacterial strategy produces almost 100% antibacterial efficiency against Escherichia coli ( E. coli ) and methicillin-resistant Staphylococcus aureus ( MRSA ). In vivo experiments show a better PTT-catalytic synergistic therapeutic performance on MRSA-infected mouse wounds. Overall, our work highlights the wide antibacterial and anti-infective bio-applications of Cu single-atom-containing catalysts.

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“…In [88], with permission from the American Chemical Society [91,92], MOF [93], Graphdiyne [94], MXene [95,96], and nitrogen-doped carbon [97].…”

Section: D Ru-based Catalystmentioning

confidence: 99%

“…SACs may be the best solution for Ru-based catalysts because of the maximum utilization of Ru atoms and the exposure of active centers. Presently, Ru SACs with different loadings have been prepared on various carriers, such as phosphors [ 91 , 92 ], MOF [ 93 ], Graphdiyne [ 94 ], MXene [ 95 , 96 ], and nitrogen-doped carbon [ 97 ].…”

Section: Maximum Utilization: Single-atom Ru-based Catalysismentioning

confidence: 99%

Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

et al. 2021

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The investigation of highly effective, durable, and cost-effective electrocatalysts for the hydrogen evolution reaction (HER) is a prerequisite for the upcoming hydrogen energy society. To establish a new hydrogen energy system and gradually replace the traditional fossil-based energy, electrochemical water-splitting is considered the most promising, environmentally friendly, and efficient way to produce pure hydrogen. Compared with the commonly used platinum (Pt)-based catalysts, ruthenium (Ru) is expected to be a good alternative because of its similar hydrogen bonding energy, lower water decomposition barrier, and considerably lower price. Analyzing and revealing the HER mechanisms, as well as identifying a rational design of Ru-based HER catalysts with desirable activity and stability is indispensable. In this review, the research progress on HER electrocatalysts and the relevant describing parameters for HER performance are briefly introduced. Moreover, four major strategies to improve the performance of Ru-based electrocatalysts, including electronic effect modulation, support engineering, structure design, and maximum utilization (single atom) are discussed. Finally, the challenges, solutions and prospects are highlighted to prompt the practical applications of Ru-based electrocatalysts for HER.

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Atomically dispersed Ni–Ru–P interface sites for high-efficiency pH-universal electrocatalysis of hydrogen evolution

Cited by 119 publications

References 50 publications

Single Atom Ruthenium‐Doped CoP/CDs Nanosheets via Splicing of Carbon‐Dots for Robust Hydrogen Production

Single Atom Ruthenium‐Doped CoP/CDs Nanosheets via Splicing of Carbon‐Dots for Robust Hydrogen Production

Copper single-atom catalysts with photothermal performance and enhanced nanozyme activity for bacteria‐infected wound therapy

Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

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