Surface oxygen-mediated ultrathin PtRuM (Ni, Fe, and Co) nanowires boosting methanol oxidation reaction

Li, Hongdong; Pan, Yue; Zhang, Dan; Han, Yi; Wang, Zuochao; Qin, Yingnan; Lin, Shuang‐Yan; Wu, Xueke; Zhao, Huan; Lai, Jianping; Huang, Bolong; Wang, Lei

doi:10.1039/c9ta11745h

Cited by 77 publications

(43 citation statements)

References 54 publications

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“…XPS spectrum ( Supplementary Fig. 31 In MOR, the main route for catalyst deactivation is the poisoning effect of CO intermediates [40][41][42] Supplementary Fig. 32 DFT studies.…”

Section: Resultsmentioning

confidence: 99%

“…In MOR, the main route for catalyst deactivation is the poisoning effect of CO intermediates 40 – 42 . The I f / I b ( I f : forward current density, I b : backward current density) ratio of Pt 18 Ni 26 Fe 15 Co 14 Cu 27 /C catalyst (3.26) is larger than that of Pt/C (2.31), which shows the strong CO anti-poisoning performance of Pt 18 Ni 26 Fe 15 Co 14 Cu 27 /C catalyst.…”

Section: Resultsmentioning

confidence: 99%

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Fast site-to-site electron transfer of high-entropy alloy nanocatalyst driving redox electrocatalysis

et al. 2020

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Designing electrocatalysts with high-performance for both reduction and oxidation reactions faces severe challenges. Here, the uniform and ultrasmall (~3.4 nm) high-entropy alloys (HEAs) Pt18Ni26Fe15Co14Cu27 nanoparticles are synthesized by a simple low-temperature oil phase strategy at atmospheric pressure. The Pt18Ni26Fe15Co14Cu27/C catalyst exhibits excellent electrocatalytic performance for hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). The catalyst shows ultrasmall overpotential of 11 mV at the current density of 10 mA cm−2, excellent activity (10.96 A mg−1Pt at −0.07 V vs. reversible hydrogen electrode) and stability in the alkaline medium. Furthermore, it is also the efficient catalyst (15.04 A mg−1Pt) ever reported for MOR in alkaline solution. Periodic DFT calculations confirm the multi-active sites for both HER and MOR on the HEA surface as the key factor for both proton and intermediate transformation. Meanwhile, the construction of HEA surfaces supplies the fast site-to-site electron transfer for both reduction and oxidation processes.

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“…XPS spectrum ( Supplementary Fig. 31 In MOR, the main route for catalyst deactivation is the poisoning effect of CO intermediates [40][41][42] Supplementary Fig. 32 DFT studies.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Fast site-to-site electron transfer of high-entropy alloy nanocatalyst driving redox electrocatalysis

et al. 2020

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“…In MOR, the main route for catalyst deactivation is the poisoning effect of CO intermediates. [37][38][39] Supplementary Fig. 14 DFT studies.…”

Section: Resultsmentioning

confidence: 99%

Fast Site-to-site Electron Transfer of High-entropy Alloy Nanocatalyst Driving Redox Electrocatalysis

Han

Zhao

et al. 2020

Preprint

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Designing electrocatalysts with high-performance for both reduction and oxidation reactions faces severe challenges. Here, the uniform and small size (~3.4 nm) high-entropy alloys (HEAs) Pt18Ni26Fe15Co14Cu27 nanoparticles (NPs) are synthesized by a simple low-temperature (<250 oC) oil phase synthesis strategy at atmospheric pressure for the first time. The Pt18Ni26Fe15Co14Cu27/C catalyst exhibits excellent electrocatalytic performance for hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). The catalyst is one of the best performance achieved by state-of-the-art alkaline HER catalysts, which shows an ultrasmall overpotential of 11 mV at the current density of 10 mA cm-2, excellent activity (10.96 A mg-1Pt at -0.07 V vs. reversible hydrogen electrode) and stability in the alkaline medium. Furthermore, it is also the most efficient catalyst (15.04 A mg-1Pt) ever reported for MOR in alkaline solution. DFT calculations confirm the multi-active sites for both HER and MOR on the HEA surface as the key factor for both proton and intermediate transformation. Meanwhile, the construction of HEA surfaces supplies the fast site-to-site electron transfer for both reduction and oxidation processes.

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“…Pt–Pd nanodendrites [ 158 ], Pt–Pd nanocages [ 159 ], and Pt–Pd hollow core-shell structure were reported to be the effective catalysts for MOR. In order to save the usage of noble metals and improve the stability and durability, tertiary metals catalysts were also developed such as PtPdTe nanowires [ 160 ], PtPdFe nanowires [ 161 ], PtPdNi nanoarchitectures [ 162 ], and PtRuM (M = Fe, Ni, Co) [ 163 ]. Therefore, the synthesis of tertiary Pt-based nanocrystals should be a promising scheme to design efficient catalysts for MOR.…”

Section: Applications Of Bimetallic Nanocrystalsmentioning

confidence: 99%

Bimetallic Nanocrystals: Structure, Controllable Synthesis and Applications in Catalysis, Energy and Sensing

Zhang

Luo

et al. 2021

Nanomaterials

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In recent years, bimetallic nanocrystals have attracted great interest from many researchers. Bimetallic nanocrystals are expected to exhibit improved physical and chemical properties due to the synergistic effect between the two metals, not just a combination of two monometallic properties. More importantly, the properties of bimetallic nanocrystals are significantly affected by their morphology, structure, and atomic arrangement. Reasonable regulation of these parameters of nanocrystals can effectively control their properties and enhance their practicality in a given application. This review summarizes some recent research progress in the controlled synthesis of shape, composition and structure, as well as some important applications of bimetallic nanocrystals. We first give a brief introduction to the development of bimetals, followed by the architectural diversity of bimetallic nanocrystals. The most commonly used and typical synthesis methods are also summarized, and the possible morphologies under different conditions are also discussed. Finally, we discuss the composition-dependent and shape-dependent properties of bimetals in terms of highlighting applications such as catalysis, energy conversion, gas sensing and bio-detection applications.

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Surface oxygen-mediated ultrathin PtRuM (Ni, Fe, and Co) nanowires boosting methanol oxidation reaction

Abstract: The surface-oxygen-modified ultrathin Pt62Ru18Ni20–O/C nanowires catalyst exhibits outstanding mass activity, excellent stability, and CO anti-poisoning for methanol oxidation reaction in acidic medium by DFT and electrochemical experiments.

Cited by 77 publications

References 54 publications

Fast site-to-site electron transfer of high-entropy alloy nanocatalyst driving redox electrocatalysis

Fast site-to-site electron transfer of high-entropy alloy nanocatalyst driving redox electrocatalysis

Fast Site-to-site Electron Transfer of High-entropy Alloy Nanocatalyst Driving Redox Electrocatalysis

Bimetallic Nanocrystals: Structure, Controllable Synthesis and Applications in Catalysis, Energy and Sensing

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