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电化学  2006 

Au_(core)Pt_(shell)纳米粒子对甲醇氧化的电催化性能研究

, PP. 218-222

Keywords: AucorePtshell纳米粒子,甲醇,电催化

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Abstract:

应用两步化学还原法制备不同厚度的AucorePtshell纳米粒子,经紫外可见光谱(UV-Vis)、透射电子显微镜(TEM)表征.该金纳米颗粒经化学还原包裹铂后平均粒径明显增大,调节金与铂的含量可获得不同包裹厚度的AucorePtshell纳米粒子.循环伏安法研究表明,粒径为70~80nm的AucorePtshell纳米粒子对甲醇的氧化具有较好的电催化活性,并且其电催化性能随着电位循环扫描次数的增加而增强.

References

[1]  Frens G.Controlled nuc leation for the regu lation of thepartic le size in monod isperse gold suspensions[J].Nature,1973,241:20.
[2]  Cre ighton J A,Eadon D G.U ltraviolet-visib le absorp-tion spectra of the colloidal m etallic elem ents[J].J.Chem.Soc.,Faraday Trans.,1991,87:3881.
[3]  Teran ish i T,HosoeM,Tanaka T,et al.S ize control ofmonod ispersed Pt nanopartic lesand the ir 2D or gan iza-tion by electrophoretic deposition[J].J.Phys,Chem.B,1999,103:3818.
[4]  Engelsm ann K,Lorenz W J,Schm idt E.Underpoten-tial deposition of lead on polycrystalline and single-crystal gold surface 1.Thermodynam ica[J].J.E lec-troanal.Chem.,1980,114:1.
[5]  [15〗Ren B,L i X Q,She C X.Surface Ram an spectroscopyas a versatile techn ique to study m ethanol oxidation onrough Pt electrodes[J].E lectroch im.Acta,2000,46:193.
[6]  [16〗B iswas P C,Nodasaka Y,EnyoM,et al.E lectro-oxi-dation of CO and m ethanol on graph ite-based p latinumelectrodes comb ined w ith oxide-supported u ltrafine goldpartic les[J].J.E lectroanal.Chem,1995,381:167.
[7]  Golab i S M,Nozad A.E lectrocatalytic oxidation ofm eth-anol on electrodes mod ified by p latinum m icropartic lesd ispersed into poly(o-phenylened iam ine)film[J].J.E lectroanal Chem.,2002,521:161.
[8]  M ikhaylova A A,Khazova O A.E lectrocatalytic and ad-sorption properties of p latinum m icropartic les electrode-posited onto glassy carbon and into Nafion film s[J].J.E lectroanal.Chem.,2000,480:225.
[9]  Chen C W,Takezako T,Yam amoto K.Poly(N-vinyli-sobutyram ide)-stab ilized p latinum nanopartic les:syn-thesis and temperature-responsive behavior in aqueoussolution[J].Colloids and Surfaces A,2000,169:107.
[10]  Hengle in A.Preparation and optical absorption spectraof Au/sub core/Pt/sub shell/and Pt/sub core/Au/subshell/colloidal nanopartic les in aqueous solution Phys[J].J.Chem.B,2000,104:2201.
[11]  Lu L H,W ang H S,X i S Q,et al.Improved size con-trol of large pallad ium nanopartic les by a seed ing growthm ethod Journal of M aterials Chem istry[J].J.M ater.Chem.,2002,12:156.
[12]  Sronova Sloufova L,Ledn icky F,Gemperle A.Core-Shell(Ag)Au b im etallic nanopartic les:analysis ofTransm ission electron m icroscopy Im ages[J].Lang-mu ir,2000,16:9928.
[13]  Lu Lehu i,Sun Guoying,Zhang Hongjie.Fabrication ofcore-shell Au-Pt nanopartic le film and its potential ap-p lication as catalysis and SERS substrate[J].J.M ater.Chem.,2004,14:1005.
[14]  Lu Lehu i,W ang Haishu i,X i Sh iquan,et al.Improvedsize control of large pallad ium nanopartic les by a seed inggrowth m ethod Journal of M aterials Chem istry[J].J.M ater.Chem.2002,12:156.
[15]  Tian Na(田娜),ChenW e i(陈卫),Sun Sh i-Gang(孙世刚).Spectroscop ic characterization and electrocatalyticproperties of core-shell Au-Pt nanopartic les[J].ActaPhys.-ch im.S in.,2005,21:74.
[16]  L i Jian-Feng(李剑锋),Hu Jia-W en(胡家文),RenB in(任斌),et al.Tun ing the SERS activity of Au-PdCore-shellNanopartic les by controlling the th ick iness ofthe Pd shell[J].Acta Phys.-Ch im.S in ica,2005,21:825.

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