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Au catalysts with layered double hydroxide (LDH) as support were fabricated and the crystal faces feature of LDH platelets was revealed to have a crucial effect on the location and particle size of gold nanoparticles (AuNPs). A preferential deposition of AuNPs with a narrow size distribution was formed on the lateral 101̅0 faces of LDH platelets. Catalytic property evaluation of the resulting Au/LDH samples showed that the conversion of styrene with tert -butyl hydroperoxide (TBHP) to styrene oxide (SO) occurred on the AuNPs with particle size of 2−3 nm, mainly deposited on the lateral faces of LDH support.
Zhang et al. (Fri,) studied this question.