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Surface‐Selective Deposition of a Reusable Gold Catalyst on a Thin Film of Metal Hydroxide Nanocrystals
Author(s) -
Cho Hye Ran,
Lee Jong Hyeon
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201403054
Subject(s) - hydroxide , monolayer , catalysis , nanocrystal , chemistry , nanoparticle , chemical engineering , thin film , nanotechnology , deposition (geology) , metal hydroxide , colloidal gold , layered double hydroxides , inorganic chemistry , materials science , organic chemistry , paleontology , sediment , engineering , biology
Abstract We have developed a simple and facile method to fabricate gold nanoparticles (Au NPs) deposited on thin films of layered double hydroxide (LDH) nanocrystals. The oriented thin film of LDH nanocrystals was employed for the preferential deposition of Au NPs by in situ growth of Au NPs on the monolayer thin film of LDH nanocrystals, which effectively provided a large and uniform active hydroxide surface for deposition of a dense monolayer of Au NPs. The reactive hydroxide groups and the positive potential of the LDH surfaces play an important role in the uniform growth of the Au NPs and in their stabilization against agglomeration. This LDH‐supported Au NP catalyst exhibits superior catalytic efficiency and reusability without significant loss in conversion efficiency for the reduction of p ‐nitrophenol with NaBH 4 , maintaining more than 96 % catalytic conversion efficiency.