Han, Geun-Ho Kim, Ki Yoon Nam, Hyunji Kim, Hyeonjin Yoon, Jihwan Lee, Jung-Hyun Kim, Hong-Kyu Ahn, Jae-Pyoung Lee, Seung Yong Lee, Kwan-Young Yu, Taekyung 2024-01-19T17:32:04Z 2024-01-19T17:32:04Z 2021-09-04 2020-06 2073-4344 https://pubs.kist.re.kr/handle/201004/118593 The selective enhancement of catalytic activity is a challenging task, as catalyst modification is generally accompanied by both desirable and undesirable properties. For example, in the case of the direct synthesis of hydrogen peroxide, Pt on Pd improves hydrogen conversion, but lowers hydrogen peroxide selectivity, whereas Au on Pd enhances hydrogen peroxide selectivity but decreases hydrogen conversion. Toward an ideal catalytic property, the development of a catalyst that is capable of improving H-H dissociation for increasing H(2)conversion, whilst suppressing O-O dissociation for high H(2)O(2)selectivity would be highly beneficial. Pd-core AuPt-bimetallic shell nanoparticles with a nano-sized bimetallic layer composed of Au-rich or Pt-rich content with Pd cubes were readily prepared via the direct seed-mediated growth method. In the Pd-core AuPt-bimetallic shell nanoparticles, Au was predominantly located on the {100} facets of the Pd nanocubes, whereas Pt was deposited on the corners of the Pd nanocubes. The evaluation of Pd-core AuPt-bimetallic shell nanoparticles with varying Au and Pt contents revealed that Pd-core AuPt-bimetallic shell that was composed of 2.5 mol% Au and 5 mol% Pt, in relation to Pd, exhibited the highest H(2)O(2)production rate (914 mmol H(2)O(2)g(metal)(-1)h(-1)), due to the improvement of both H(2)O(2)selectivity and H(2)conversion. English MDPI HYDROGEN-PEROXIDE CATALYSTS H2O2 H-2 NANOPARTICLES O-2 OXYGEN OXIDATION Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H(2)O(2)Synthesis Article 10.3390/catal10060650 1 CATALYSTS, v.10, no.6 CATALYSTS 10 6 scie scopus 000551231400001 2-s2.0-85086317796 Chemistry, Physical Chemistry Article HYDROGEN-PEROXIDE CATALYSTS H2O2 H-2 NANOPARTICLES O-2 OXYGEN OXIDATION bimetallic shell direct synthesis of H2O2 shell control core-shell mild condition fast-screening