Au-Pt双金属纳米颗粒的合成机制（英文）
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- 英文论文题名：Study of Synthesis Mechanism of Au-Pt Bimetallic Nanoparticles
- 论文作者：陈有为 ; 张丽 ; 陈丹超 ; 黄姣 ; 马明 ; 俞雄飞
- 英文论文作者：CHEN Youwei ; ZHANG Li ; CHEN Danchao ; HUANG Jiao ; MA Ming ; YU Xiongfei ; Ningbo Inspection and Quarantine Institute of Science and Technology ; Ningbo Entry-Exit Inspection and Quarantine Bureau ; Ningbo SOFCMAN Energy Technology Co ; Ltd
- 年：2016
- 作者机构：宁波检验检疫科学技术研究院;宁波出入境检验检疫局检验检疫技术中心;宁波索福人能源技术有限公司;
- 论文关键词：Au-Pt ; 双金属纳米颗粒 ; Au晶种 ; 树枝状颗粒
- 英文论文关键词：Au-Pt ; bimetallic nanoparticles ; Au seeds dendritic ; dendritic heteroaggregate nanoparticles
- 会议召开时间：2016-11-18
- 会议录名称：第一届先进材料前沿学术会议论文集（《材料导报》2016年第30卷第Z1期）
- 语种：英文
- 分类号：TB383.1
- 学会代码：CLDB
- 会议名称：第一届先进材料前沿学术会议
- 会议地点：中国陕西西安
- 主办单位：《材料导报》杂志社
- 学会名称：材料导报编辑部
- 页数：7
- 文件大小：1622k
- 原文格式：O
- 会议级别：全国
摘要
以油胺顺序还原Au前体和Pt前体,制备了Au-Pt树枝状杂聚体纳米颗粒。该杂聚体结构以纳米Au为核心,树枝状的Pt须生长在Au核表面。研究了合成条件(前体、Au/Pt比例、Au晶种、一锅法合成)对产物结构及形貌的影响,采用XRD、UVvisible、TEM、HRTEM、EDS等手段对纳米颗粒的形貌及结构进行了表征,还对该纳米结构的形成机制进行了深入讨论。由油胺还原制备得到的Au纳米颗粒,其表面是由众多不同取向的晶面构成的,由于Au和Pt之间晶面间距的差距,Au纳米颗粒表面只有部分区域适合Pt沉积,随后Pt继续生长则会形成Au-Pt树枝状杂聚体结构。
Bimetallic Au-Pt dendritic heteroaggregate nanoparticles were synthesized by sequential reduction of Au and Pt precursors by oleyamine.The resulting nanoparticles consist of Au core and Pt tendrils attached on it.The synthesis details(e.g.,precursors,Au/Pt ratios,Au seeds,one pot synthesis) were investigated,and the obtained nanoparticles were characterized by XRD,UV-visible,HRTEM,and EDS.The synthesis mechanism was also discussed.It was found that the surfaces of Au NPs synthesized by oleylamine reduction method were full of different oriented facets.Because of the lattice difference between Au and Pt,only a partial Au surface were suitable for Pt deposition,and continuous Pt growth resulted in the formation of Au-Pt dendritic heteroaggregate structures.
Bimetallic Au-Pt dendritic heteroaggregate nanoparticles were synthesized by sequential reduction of Au and Pt precursors by oleyamine.The resulting nanoparticles consist of Au core and Pt tendrils attached on it.The synthesis details(e.g.,precursors,Au/Pt ratios,Au seeds,one pot synthesis) were investigated,and the obtained nanoparticles were characterized by XRD,UV-visible,HRTEM,and EDS.The synthesis mechanism was also discussed.It was found that the surfaces of Au NPs synthesized by oleylamine reduction method were full of different oriented facets.Because of the lattice difference between Au and Pt,only a partial Au surface were suitable for Pt deposition,and continuous Pt growth resulted in the formation of Au-Pt dendritic heteroaggregate structures.
引文
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3 Kumar GVP,Shruthi S,Vibha B,et al.Hot spots in Ag core-Au shell nanoparticles potent for surface-enhanced raman scattering studies of biomolecules[J].J Phys Chem C2007,111:4388.
4 Barth J V,Costantini G,Kern K.Engineering atomic and molecular nanostructures at surfaces[J].Nature,2014,437(7059):671.
5 Sun S,Murray C B,Weller D,et al.Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices[J].Science,2000,287:1989.
6 Teng X,Yang H.Synthesis of face-centered tetragonal FePt nanoparticles and granular films from Pt@Fe_2O_3 core-shell nanoparticles[J].J Am Chem Soc,2003,125:14559.
7 Hatton B D,Landskron K.Whitnall,et al.Structural characterization and adsorption properties of pluronic F127 onto iron oxides magnetic nanoparticles[J].J Nanosci Nanotechnol,2014,14(3):2361.
8 Wang H,Rempel G L.Bimetallic dendrimer-encapsulated nanoparticle catalysts[J].Polym Rev,2016,56(3):486.
9 Zhou S,Jackson G S.Eichhorn R AuPt alloy nanoparticles for CO tolerant Hydrogen activation:Architectural effects in Au-Pt bimetallic nanocatalysts[J].Adv Funct Mater,2007,17:3099.
10 Liu G L,Niu T,Cao A,et al.The deactivation of Cu-Co alloy nanoparticles supported on Z1O2 for higher alcohols synthesis from syngas[J].Fuel,2016,176:1.
11 Liang Li,Xing Y.Pt-Ru nanoparticles supported on carbon nanotubes as methanol fuel cell catalysts[J].J Phys Chem C,2015,111(6):2803.
12 Suzuka T,Sueyoshi H,Maehara S,et al.Reactivity of aryl halides for reductive dehalogenation in(Sea)water using polymer-supported terpyridine palladium catalyst[J].Molecules,2015,20(6):9906.
13 Nilekar A U,Alayoglu S,Eichhorn B,et al.Preferential CO oxidation in hydrogen:Reactivity of core-shell nanoparticles[J].J Am Chem Soc,2010,132:7418.
14 Luo J,Njoki P N,Lin Y,et al.Characterization of carbon-supported AuPt nanoparticles for electrocatalytic methanol oxidation reaction[J].Langmuir,2006,22:2892.
15 Moller H,Pistorius P C.The electrochemistry of gold-platinum alloys[J].J ElectroanalChem,2004,570:243.
16 Lang H,Maldonado S,Stevenson K J,et al.Synthesis and characterization of dendrimer templated supported bimetallic Pt-Au nanoparticles[J].J Am Chem Soc,2004,126:12949.
17 Wu M L,Chen D H,Huang T C.Preparation of Au/Pt bimetallic nanoparticles in water-in-oil microemulsions[J].Chem Mater,2001,13:599.
18 Mandal S,Mandate A B,Sastry M Keggin ion-mediated synthesis of aqueous phase-pure Au@Pd and Au@Pt core-shell nanoparticles[J].J Mater Chem,2004,14:2868.
19 Toshima N,Yonezawa T.Bimetallic nanoparticlesenovel materials for chemical and physical applications[J].New J Chem,1998,22:1179.
20 Son S U,Jang Y,Park J,et al.Designed synthesis of atom-economical Pd/Ni bimetallic nanoparticle-based catalysts for sonogashira coupling reactions[J].J Am Chem Soc,2004,126:5026.
21 Zhou S,Mcllwrath K,Jackson G,et al.Enhanced CO tolerance for hydrogen activation in Au-Pt dendritic heteroaggregate nanostructures[J].J Am Chem Soc,2006,128:1780.
22 Lim B,Jiang M,Camargo P H C,et al.Pd-Pt bimetallic nanodendrites with high activity for oxygen reduction[J].Science,2009,324:1302.
23 Feng L,Wu X,Ren L,et al.Well-controlled synthesis of Au@Pt nanostructures by gold-nanorod-seeded growth[J].Chem Eur J,2008,14:9764.
24 He W,Wu X,Liu J,et al.Pt-guided formation of Pt-Ag alloy nanoislands on Au nanorods and improved methanol electro-oxidation[J].J Phys Chem C,2009,113:10505.
25 Guo S,Dong S,Wang E.Three-dimensional Pt-on-Pd bimetallic nanodendrites supported on graphene nanosheet:Facile synthesis and used as an advanced nanoelectrocatalyst for methanol oxidation[J].ACS Nano,2010,4:547.
26 Guo S,Li J,Dong S,et al.Three-dimensional Pt-on-Au bimetallic dendritic nanoparticle:One-step,high-yield synthesis and its bifunctional plasmonic and catalytic properties[J].J Phys Chem C,2010,114:15337.
27 Heo J,Kim D S,Kim Z H,et al.Controlled synthesis and characterization of the enhanced local field of octahedral Au nanocrystals[J].Chem Commun,2008,46:6120.