在含不同摩尔比的Au(Ⅲ)和Pt(Ⅳ)离子的PEG(聚乙二醇)-丙酮溶液中,采用光化学共还原法合成了一组Au@Pt复合纳米粒子,并以炭黑分别对其负载制成Au@Pt/C催化剂.借助于UV-Vis、TEM和HR-TEM的表征,证实复合纳米粒子为球形的核/壳结构;分别以XPS、EDS和电化学方法分析了复合粒子的化学状态、结构特点和Au@Pt/C催化剂的催化性质.结果表明,不同Au∶Pt摩尔比的Au@Pt/C催化剂对甲醇氧化反应具有良好的催化活性和稳定性,其中Au∶Pt=1∶1时形成的Au@Pt/C催化剂电催化活性最高,约为商品Pt/C催化剂的4倍.简要讨论了核/壳结构产生高催化活性的主要原因.
参考文献
| [1] | 杨晓峰,董相廷,周艳慧,王进贤,刘桂霞.贵金属核壳纳米粒子最新研究进展[J].稀有金属材料与工程,2009(02):368-372. |
| [2] | Dong S;Tang C .[J].Trans Nonf Met Soc China,2005,15(02):310. |
| [3] | 董颖男,董守安,唐春.光化学合成Au核@Pd壳复合纳米粒子及其表征[J].高等学校化学学报,2009(07):1397-1401. |
| [4] | Zhang P;Chen Y;Cai J et al.[J].Journal of Physical Chemistry C,2009,113:17518. |
| [5] | Yang L;Chen JH;Zhong XX;Cui KZ;Xu Y;Kuang YF .Au@Pt nanoparticles prepared by one-phase protocol and their electrocatalytic properties for methanol oxidation[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2007(1/3):21-26. |
| [6] | Guo S;Fang Y;Dong S et al.[J].Journal of Physical Chemistry C,2007,111:17104. |
| [7] | Li, X.;Liu, J.;He, W.;Huang, Q.;Yang, H. .Influence of the composition of core-shell Au-Pt nanoparticle electrocatalysts for the oxygen reduction reaction[J].Journal of Colloid and Interface Science,2010(1):132-136. |
| [8] | Ma Y;Zhang H;Zhong H et al.[J].Catalysis Communications,2010,11:434. |
| [9] | Zeng L;Yang J;Lee J et al.[J].Journal of Physical Chemistry B,2006,110:24606. |
| [10] | Tang H;Chen JH;Wang MY;Nie LH;Kuang YF;Yao SZ .Controlled synthesis of platinum catalysts on Au nanoparticles and their electrocatalytic property for methanol oxidation[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2004(1/2):43-48. |
| [11] | Mandal S;Mandale AB;Sastry M .Keggin ion-mediated synthesis of aqueous phase-pure Au@Pd and Au@Pt core-shell nanoparticles[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2004(19):2868-2871. |
| [12] | Qian L;Sha YF;Yang XR .Simple and convenient preparation of Au-Pt core-shell nanoparticles on surface via a seed growth method[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2006(4):1349-1353. |
| [13] | Nakanishi M;Takatani H;Kobayashi Y;Hori F;Taniguchi R;Iwase A;Oshima R .Characterization of binary gold/platinum nanoparticles prepared by sonochemistry technique[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2005(1/2):209-212. |
| [14] | 杨生春,董守安,唐春,李品将.纳米Ag粒子与CN-反应的机制研究[J].稀有金属材料与工程,2005(08):1243-1246. |
| [15] | 吴泓橙,董守安,董颖男,唐春,杨生春.金纳米粒子的阳光光化学合成和晶种媒介生长[J].高等学校化学学报,2007(01):10-15. |
| [16] | Dong S;Tang C;Zhou H et al.[J].Gold Bulletin,2004,37(3-4):187. |
| [17] | Dong S;Zhou S .[J].Materials Science and Engineering B,2007,140:153. |
| [18] | Dong S;Yang S .[J].Chemical Research in Chinese Universities,2007,23(05):500. |
| [19] | Bartlett N .[J].Gold Bulletin,1998,31:22. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%