Precise Synthesis of Ligand-Protected Metal Nanoclusters for Electrochemical/Photoelectrochemical Applications

IF 1.4 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
T. Kawawaki, Yuichi Negishi
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引用次数: 0

Abstract

Ligand-protected metal nanoclusters (NCs) represent a significant advancement in the field of catalysis due to their unique size-specific electronic and geometric structures. These properties are highly dependent on the metal species, number of constituent atoms, and geometric structure of the metal NC. We discuss on the synthesis, stability, structural characterization, and electrocatalytic/photocatalytic applications of these fascinating materials, emphasizing their superior performance over conventional catalysts. In this study, we have obtained a deeper understanding of the interaction between the metal core and the organic ligands protecting the metal NCs, as well as the desorption behavior of the ligands under calcination, which is crucial for the application of metal NCs as heterogeneous catalysts. Based on this understanding, we have demonstrated that metal NCs-supported catalysts with appropriate pretreatment exhibit higher activity as photocatalysts compared to conventional catalysts. Moreover, by suppressing oxygen poisoning through the use of sulfur species in the ligands, Pt NCs showed high activity as cocatalysts for photocatalytic hydrogen evolution in water splitting. Additionally, atomically precised phosphine-protected Pt NCs exhibited high activity as cathode electrocatalysts for fuel cells. These findings are expected to significantly contribute to the development of more diverse catalysts based on metal NCs, including those with varying metal species, numbers of constituent atoms, and geometric structures.
用于电化学/光电化学应用的配体保护金属纳米团簇的精确合成
受配体保护的金属纳米团簇(NCs)因其独特的特定尺寸电子和几何结构而成为催化领域的一大进步。这些特性在很大程度上取决于金属种类、组成原子数以及金属 NC 的几何结构。我们讨论了这些迷人材料的合成、稳定性、结构特征和电催化/光催化应用,强调了它们优于传统催化剂的性能。在这项研究中,我们深入了解了金属核与保护金属 NC 的有机配体之间的相互作用,以及配体在煅烧过程中的解吸行为,这对于金属 NC 作为异相催化剂的应用至关重要。基于这一认识,我们证明了与传统催化剂相比,经过适当预处理的金属 NC 支持催化剂具有更高的光催化活性。此外,通过在配体中使用硫物种来抑制氧中毒,铂NC作为光催化氢进化的协同催化剂在水分离中表现出较高的活性。此外,作为燃料电池的阴极电催化剂,原子精确化的磷化氢保护铂 NCs 表现出很高的活性。这些发现有望极大地促进基于金属 NCs 的更多样化催化剂的开发,包括具有不同金属种类、组成原子数和几何结构的催化剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chemistry Letters
Chemistry Letters 化学-化学综合
CiteScore
3.00
自引率
6.20%
发文量
260
审稿时长
1.2 months
期刊介绍: Chemistry Letters covers the following topics: -Organic Chemistry- Physical Chemistry- Inorganic Chemistry- Analytical Chemistry- Materials Chemistry- Polymer Chemistry- Supramolecular Chemistry- Organometallic Chemistry- Coordination Chemistry- Biomolecular Chemistry- Natural Products and Medicinal Chemistry- Electrochemistry
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