The Decoration of Gold Core in Au@ZrO2 Nanoreactors with Trace Amounts of Pd for the Effective Reduction of 4-Nitrophenol to 4-Aminophenol

Autor:	Sergio Fuentes, Andrey Simakov, Serguei V. Miridonov, Brenda Acosta, Viridiana Evangelista
Rok vydání:	2019
Předmět:	Trace Amounts 010405 organic chemistry 4-Aminophenol Inorganic chemistry 4-Nitrophenol General Chemistry Nanoreactor 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Cubic zirconia Bimetallic strip Organometallic chemistry
Zdroj:	Catalysis Letters. 149:1621-1632
ISSN:	1572-879X 1011-372X
Popis:	Pd1/Au20@ZrO2 nanoreactors with the gold nuclei confined within zirconia shell and decorated with Pd were synthesized using an Au:Pd molar ratio of 20:1. The presence of even trace amounts of Pd on the gold nuclei surface, significantly enhanced catalytic activity of Pd1/Au20@ZrO2 nanoreactors in the 4-nitrophenol to 4-aminophenol transformation by four times compared to Au@ZrO2. In addition, the Pd1/Au20@ZrO2 nanoreactors remained highly stable during the reaction even under harsh conditions, i.e. without nanoreactors cleaning before the subsequent catalytic run, comparable with the stability of Au@ZrO2 nanoreactors. The presently proposed synthesis technique allowed to prepare nanoreactors of uniform structure even with relatively unstable bimetallic NPs (Pd/Au) as nuclei.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c4c43dce2334568e5868f78ba6158596 https://doi.org/10.1007/s10562-019-02758-y Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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