Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> Synthesis

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 per...

Full description

Bibliographic Details
Main Authors: Geun-Ho Han, Ki Yoon Kim, Hyunji Nam, Hyeonjin Kim, Jihwan Yoon, Jung-Hyun Lee, Hong-Kyu Kim, Jae-Pyoung Ahn, Seung Yong Lee, Kwan-Young Lee, Taekyung Yu
Format: Article
Language:English
Published: MDPI AG 2020-06-01
Series:Catalysts
Subjects:
Online Access:https://www.mdpi.com/2073-4344/10/6/650
_version_ 1797565644839845888
author Geun-Ho Han
Ki Yoon Kim
Hyunji Nam
Hyeonjin Kim
Jihwan Yoon
Jung-Hyun Lee
Hong-Kyu Kim
Jae-Pyoung Ahn
Seung Yong Lee
Kwan-Young Lee
Taekyung Yu
author_facet Geun-Ho Han
Ki Yoon Kim
Hyunji Nam
Hyeonjin Kim
Jihwan Yoon
Jung-Hyun Lee
Hong-Kyu Kim
Jae-Pyoung Ahn
Seung Yong Lee
Kwan-Young Lee
Taekyung Yu
author_sort Geun-Ho Han
collection DOAJ
description 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<sub>2</sub> conversion, whilst suppressing O-O dissociation for high H<sub>2</sub>O<sub>2</sub> 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<sub>2</sub>O<sub>2</sub> production rate (914 mmol H<sub>2</sub>O<sub>2</sub> g<sub>metal</sub><sup>−1</sup> h<sup>−1</sup>), due to the improvement of both H<sub>2</sub>O<sub>2</sub> selectivity and H<sub>2</sub> conversion.
first_indexed 2024-03-10T19:16:02Z
format Article
id doaj.art-69b8980a81cc40fb97008bedf0a88a69
institution Directory Open Access Journal
issn 2073-4344
language English
last_indexed 2024-03-10T19:16:02Z
publishDate 2020-06-01
publisher MDPI AG
record_format Article
series Catalysts
spelling doaj.art-69b8980a81cc40fb97008bedf0a88a692023-11-20T03:23:45ZengMDPI AGCatalysts2073-43442020-06-0110665010.3390/catal10060650Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> SynthesisGeun-Ho Han0Ki Yoon Kim1Hyunji Nam2Hyeonjin Kim3Jihwan Yoon4Jung-Hyun Lee5Hong-Kyu Kim6Jae-Pyoung Ahn7Seung Yong Lee8Kwan-Young Lee9Taekyung Yu10Department of Chemical and Biological Engineering, Korea University, Seoul 02841, KoreaDepartment of Chemical Engineering, College of Engineering, Kyung Hee University, Yongin 17140, KoreaDepartment of Chemical and Biological Engineering, Korea University, Seoul 02841, KoreaAdvanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, KoreaDepartment of Chemical and Biological Engineering, Korea University, Seoul 02841, KoreaDepartment of Chemical and Biological Engineering, Korea University, Seoul 02841, KoreaAdvanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, KoreaAdvanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, KoreaMaterials Architecturing Research Center, Korea Institute of Science and Technology, Seoul 02792, KoreaDepartment of Chemical and Biological Engineering, Korea University, Seoul 02841, KoreaDepartment of Chemical Engineering, College of Engineering, Kyung Hee University, Yongin 17140, KoreaThe 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<sub>2</sub> conversion, whilst suppressing O-O dissociation for high H<sub>2</sub>O<sub>2</sub> 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<sub>2</sub>O<sub>2</sub> production rate (914 mmol H<sub>2</sub>O<sub>2</sub> g<sub>metal</sub><sup>−1</sup> h<sup>−1</sup>), due to the improvement of both H<sub>2</sub>O<sub>2</sub> selectivity and H<sub>2</sub> conversion.https://www.mdpi.com/2073-4344/10/6/650bimetallic shelldirect synthesis of H<sub>2</sub>O<sub>2</sub>shell controlcore–shellmild conditionfast-screening
spellingShingle Geun-Ho Han
Ki Yoon Kim
Hyunji Nam
Hyeonjin Kim
Jihwan Yoon
Jung-Hyun Lee
Hong-Kyu Kim
Jae-Pyoung Ahn
Seung Yong Lee
Kwan-Young Lee
Taekyung Yu
Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> Synthesis
Catalysts
bimetallic shell
direct synthesis of H<sub>2</sub>O<sub>2</sub>
shell control
core–shell
mild condition
fast-screening
title Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> Synthesis
title_full Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> Synthesis
title_fullStr Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> Synthesis
title_full_unstemmed Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> Synthesis
title_short Facile Direct Seed-Mediated Growth of AuPt Bimetallic Shell on the Surface of Pd Nanocubes and Application for Direct H<sub>2</sub>O<sub>2</sub> Synthesis
title_sort facile direct seed mediated growth of aupt bimetallic shell on the surface of pd nanocubes and application for direct h sub 2 sub o sub 2 sub synthesis
topic bimetallic shell
direct synthesis of H<sub>2</sub>O<sub>2</sub>
shell control
core–shell
mild condition
fast-screening
url https://www.mdpi.com/2073-4344/10/6/650
work_keys_str_mv AT geunhohan faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT kiyoonkim faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT hyunjinam faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT hyeonjinkim faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT jihwanyoon faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT junghyunlee faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT hongkyukim faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT jaepyoungahn faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT seungyonglee faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT kwanyounglee faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis
AT taekyungyu faciledirectseedmediatedgrowthofauptbimetallicshellonthesurfaceofpdnanocubesandapplicationfordirecthsub2subosub2subsynthesis