One-pot synthesis of CuPt nanodendrites with enhanced activity towards methanol oxidation reaction

Peng, Hongcheng; Qi, Weihong; Wu, Haofei; He, Jieting; Li, Yejun; Xie, Haipeng

doi:10.1039/c8ra00391b

Cited by 8 publications

(2 citation statements)

References 35 publications

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“…Compared with the metallic Pd electrode, the greater specific surface area and unique morphology of sepiolite enabled the good dispersion of Pd, and thus the utilization efficiency of the Pd active sites was optimized, which led to improved catalytic activity. In addition, the synergistic effect between Pd and sepiolite enhanced the electrochemical stability and the ability to resist intermediate poisoning (Peng et al , 2018).…”

Section: Resultsmentioning

confidence: 99%

Simple and efficient: performance of palladium-loaded sepiolite for electrocatalytic ethanol oxidation

Zhao

et al. 2022

Clay miner.

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Section: Resultsmentioning

confidence: 99%

Simple and efficient: performance of palladium-loaded sepiolite for electrocatalytic ethanol oxidation

Zhao

et al. 2022

Clay miner.

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“…Pt (4f) and Cu (2p) peaks were observed at 71.5 eV and 932.9 eV, both the peaks shifted toward higher binding energies as compared to pure Pt (71.2 eV) and pure Cu (932.7 eV). The shift in peaks along with the Pt (4f) peak broadening is attributed to Cu-Pt metal interaction and the formation of CuPt nanoparticles on carbon framework [32,33]. The C1s is aligned at 284.42 eV to compensate for the sample surface charging.…”

Section: Resultsmentioning

confidence: 99%

MOF-Derived CuPt/NC Electrocatalyst for Oxygen Reduction Reaction

et al. 2020

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Metal-organic frameworks (MOFs) have been at the center stage of material science in the recent past because of their structural properties and wide applications in catalysis. MOFs have also been used as hard templates for the preparation of catalysts. In this study, highly active CuPt/NC electrocatalyst was synthesized by pyrolyzing Cu-tpa MOF along with Pt precursor under flowing Ar-H2 atmosphere. The catalyst was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD). Rotating disk electrode study was performed to determine the oxygen reduction reaction (ORR) activity for CuPt/NC in 0.1 M HClO4 at different revolutions per minute (400, 800, 1200, and 1600) and it was also compared with commercial Pt/C catalyst. Further the ORR performance was evaluated by K-L plots and Tafel slope. CuPt/NC shows excellent ORR performance with onset potential of 0.9 V (vs. RHE), which is comparable with commercial Pt/C. The ORR activity of CuPt/NC is demonstrated as an efficient electrocatalyst for fuel cell.

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Shape Control Synthesis of CuPt Alloys with Enhanced Hydrogen Evolution Reaction and Methanol Oxidation Reaction Activities

et al. 2021

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The high expense, poor stability, and low abundance of platinum (Pt) catalysts on earth greatly handicaps its further application. Alloying Pt with other metals is an alternate idea, however, as a promising catalyst should be synthesized on a large scale, one important goal is that the morphologies and electrocatalytic activities of the as‐obtained electrocatalysts can maintain the same, even when the precursor ratio is varied. In addition, according to the Le Chatellier's principle as more earth‐abundant precursors were used can accelerate the transforming efficiency of noble metal during the synthesis. Unfortunately, no current research has reached this goal, we herein report a facile two‐step method for the synthesis of three‐dimensional CuPt alloys via galvanic replacement between the noble Pt precursor and pre‐synthesized copper (Cu) nanocubes in a liquid system free of capping agent. Further investigation proved that the morphologies can be regulated via changing the reaction temperature, while the composition of precursors does not affect the morphologies evolutions match well with the industrial demand. The CuPt alloys obtained at 80 °C (denoted as CuPt‐80) exhibited superior activities towards both HER and MOR reaction when compared with CuPt‐60, CuPt‐100, Pt nanocrystals (Pt NCs) and 20% Pt/C. This work enriched the application of Le Chatellier's principle and provides a promising way for the rational design and synthesis of efficient and robust catalysts for sustainable energy conversion.

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One-pot synthesis of CuPt nanodendrites with enhanced activity towards methanol oxidation reaction

Abstract: CuPt nanodendrites have special electrocatalytic performance due to their unique morphology and structures.

Cited by 8 publications

References 35 publications

Simple and efficient: performance of palladium-loaded sepiolite for electrocatalytic ethanol oxidation

Simple and efficient: performance of palladium-loaded sepiolite for electrocatalytic ethanol oxidation

MOF-Derived CuPt/NC Electrocatalyst for Oxygen Reduction Reaction

Shape Control Synthesis of CuPt Alloys with Enhanced Hydrogen Evolution Reaction and Methanol Oxidation Reaction Activities

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