水凝胶复合材料中 PtAu 和 PtAg 纳米粒子在增强环境催化方面的协同效应

IF 2.9 3区物理与天体物理 Q2 PHYSICS, APPLIED

Plasma Processes and Polymers Pub Date : 2023-12-12 DOI:10.1002/ppap.202300201

Anyu Zhang, Dapeng Meng, Jianan Zhang, Zhao Wang

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引用次数: 0

摘要

采用辉光放电等离子还原法，在室温下成功地在水凝胶复合材料中合成了双金属纳米粒子。金或银的加入有效地稳定了铂的价态，防止了铂的氧化。由于明胶的皱褶和多孔结构提供了低操作温度和高比表面积，金属颗粒在复合材料中表现出高分散性。Gel-Pt3Au-5mM 和 Gel-Pt3Ag-5mM 分别在 20 秒和 16 秒内实现了亚甲基蓝（MB）的完全还原。适当选择成分可改变复合材料表面的电子密度，从而增强吸附剂的结合能力并降低活化能势垒。在还原甲基溴方面，这种优异的催化性能超过了单金属催化剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synergistic effects of PtAu and PtAg nanoparticles in hydrogel composites for enhanced environmental catalysis

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Synergistic effects of PtAu and PtAg nanoparticles in hydrogel composites for enhanced environmental catalysis

Bimetallic nanoparticles were successfully synthesized within hydrogel composites by the glow discharge plasma reduction method at room temperature. The addition of Au or Ag effectively stabilized the valence state of Pt and prevented its oxidation. Due to the combination of low operating temperature and high specific surface area provided by the wrinkles and porous structures of gelatin, the metal particles exhibit high dispersion within the composite. The Gel-Pt3Au-5mM and Gel-Pt3Ag-5mM achieved a complete reduction of methylene blue (MB) in just 20 and 16 s, respectively. Properly selected components alter the electron density on the surface of composites, thereby enhancing the adsorbate's binding capability and reducing the activation energy barrier. This superior catalytic performance surpasses that of monometallic catalysts in the reduction of MB.

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来源期刊

Plasma Processes and Polymers 物理-高分子科学

CiteScore

6.60

自引率

11.40%

发文量

150

审稿时长

3 months

期刊介绍： Plasma Processes & Polymers focuses on the interdisciplinary field of low temperature plasma science, covering both experimental and theoretical aspects of fundamental and applied research in materials science, physics, chemistry and engineering in the area of plasma sources and plasma-based treatments.