abstract

• Abstract: Pd 1 /Au 20 %40ZrO 2 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 Pd 1 /Au 20 %40ZrO 2 nanoreactors in the 4-nitrophenol to 4-aminophenol transformation by four times compared to Au%40ZrO 2 . In addition, the Pd 1 /Au 20 %40ZrO 2 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%40ZrO 2 nanoreactors. The presently proposed synthesis technique allowed to prepare nanoreactors of uniform structure even with relatively unstable bimetallic NPs (Pd/Au) as nuclei. Graphical Abstract: [Figure not available: see fulltext.]. © 2019, Springer Science%2bBusiness Media, LLC, part of Springer Nature.
• Abstract: Pd 1 /Au 20 @ZrO 2 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 Pd 1 /Au 20 @ZrO 2 nanoreactors in the 4-nitrophenol to 4-aminophenol transformation by four times compared to Au@ZrO 2 . In addition, the Pd 1 /Au 20 @ZrO 2 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@ZrO 2 nanoreactors. The presently proposed synthesis technique allowed to prepare nanoreactors of uniform structure even with relatively unstable bimetallic NPs (Pd/Au) as nuclei. Graphical Abstract: [Figure not available: see fulltext.]. © 2019, Springer Science%2bBusiness Media, LLC, part of Springer Nature.

authors

• Acosta Ruelas Brenda Jeanneth
• Evangelista V.
• Fuentes S.
• Miridonov S.
• Simakov A.

publication date

• 2019-01-01

published in

• Catalysis Letters  Journal

keywords

• 4-Nitrophenol reduction; Bimetallic Pd/Au; Decoration; High stability; Nanoreactors Catalyst activity; Decoration; Gold; Molar ratio; Zirconia; 4-aminophenols; 4-Nitrophenol; 4-Nitrophenol reductions; Bimetallic Pd/Au; Enhanced catalytic activity; Highly stables; Synthesis techniques; Uniform structure; Nanoreactors

Digital Object Identifier (DOI)

• 10.1007/s10562-019-02758-y

start page

end page