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Owing to their remarkable properties, gold nanoparticles are applied in diverse fields, including catalysis, electronics, energy conversion and sensors. However, for catalytic applications of colloidal gold nanoparticles, the trade-off between their reactivity and stability is a significant concern. Here we report a universal approach for preparing stable and reactive colloidal small (~3 nm) gold nanoparticles by using multi-dentate polyoxometalates as protecting agents in non-polar solvents. These nanoparticles exhibit exceptional stability even under conditions of high concentration, long-term storage, heating and addition of bases. Moreover, they display excellent catalytic performance in various oxidation reactions of organic substrates using molecular oxygen as the sole oxidant. Our findings highlight the ability of inorganic multi-dentate ligands with structural stability and robust steric and electronic effects to confer stability and reactivity upon gold nanoparticles. This approach can be extended to prepare metal nanoparticles other than gold, enabling the design of novel nanomaterials with promising applications.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: gold nanoparticles, multi-dentate metal oxide nanoclusters, colloidal gold nanoparticle catalysts, polyoxometalates

刊行年月日: 2024-02-06

出版者: Springer Science and Business Media LLC

掲載誌:

• Nature Communications (ISSN: 20411723) vol. 15 851

研究助成金:

• MEXT | JST | Precursory Research for Embryonic Science and Technology JPMJPR18T7
• MEXT | JST | Precursory Research for Embryonic Science and Technology JPMJPR227A
• MEXT | JST | Precursory Research for Embryonic Science and Technology JPMJPR19T9
• MEXT | Japan Society for the Promotion of Science KAKENHI 22H04971
• MEXT | JST | Precursory Research for Embryonic Science and Technology JPMJPR20T4
• MEXT | Japan Science and Technology Agency JPMJFR213M
• MEXT | Japan Science and Technology Agency JPMJFR2033

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/s41467-024-45066-9

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更新時刻: 2024-11-28 16:30:25 +0900

MDRでの公開時刻: 2024-11-28 16:30:25 +0900