采用简单的化学还原法制备了具有不同形貌特征的Pt纳米粒子,并利用浸渍法将其负载到SiO2上,得到了粒子分散均一的负载型Pt催化剂,考察了其催化CO氧化反应性能.X射线荧光分析、X射线光电子能谱、红外光谱和透射电镜结果表明,Pt/SiO2模型催化剂上CO氧化活性的不同来源于Pt纳米粒子不同晶面的贡献,即Pt纳米粒子的晶型对CO在催化剂上的吸附和Pt/SiO2的CO氧化活性具有重要的影响.
In order to investigate the influence of particle morphology on the catalytic activity of supported Pt model catalyst,platinum nanoparticles (NPs) with different morphologies were synthesized by a chemical method and loaded onto SiO2 to give well-defined supported catalysts.CO oxidation was used as the probe to investigate the catalytic activities of these Pt/SiO2 model catalysts.X-ray fluorescence,X-ray photoelectron spectroscopy,diffuse reflectance Fourier transform infrared spectroscopy,and transmission electron microscopy characterization demonstrated that the different activities of these Pt/SiO2 catalysts were due to different crystal surfaces,which strongly influenced the adsorption and oxidation of CO on the Pt NPs.
参考文献
| [1] | Lim B;Xiong Y;Xia Y .[J].Angewandte Chemie International Edition,2007,46:9279. |
| [2] | Song H;Kim F;Connor S;Somorjai G A Yang P .[J].Journal of Physical Chemistry B,2005,109:188. |
| [3] | Herricks T;Chen J;Xia Y .[J].Nano Letters,2004,4:2367. |
| [4] | Narayanan R;El-Sayed M A .[J].Journal of the American Chemical Society,2004,126:7194. |
| [5] | Xiong Y;Wiley B J;Xia Y .[J].Angewandte Chemie International Edition,2007,46:7157. |
| [6] | Tao A R;Habas S;Yang P .[J].Smal1,2008,4:310. |
| [7] | Borchert H;Fenske D;Kolny-Olesiak J;Parisi J,Al-Shamery K,Baeumer M .[J].Angewandte Chemie International Edition,2007,46:2923. |
| [8] | Narayanan R;El-Sayed M A .[J].Nano Letters,2004,4:1343. |
| [9] | McCarthy E;Zahradnik J;Kuczynski G C;Carberry J J .[J].Journal of Catalysis,1975,39:29. |
| [10] | Lee I;Nguyen M K;Morton T H;Zaera F .[J].Journal of Physical Chemistry C,2008,112:14117. |
| [11] | Lee I;Delbeeq F;Morales R;Albiter M A Zaera F .[J].Nature Materials,2009,8:132. |
| [12] | Lee, I;Morales, R;Albiter, MA;Zaera, F .Synthesis of heterogeneous catalysts with well shaped platinum particles to control reaction selectivity[J].Proceedings of the National Academy of Sciences of the United States of America,2008(40):15241-15246. |
| [13] | Christopher P;Linic S .Engineering selectivity in heterogeneous catalysis: Ag nanowires as selective ethylene epoxidation catalysts[J].Journal of the American Chemical Society,2008(34):11264-11265. |
| [14] | Christopher P;Linic S .[J].ChemCatChem,2010,2:78. |
| [15] | Karim, AM;Prasad, V;Mpourmpakis, G;Lonergan, WW;Frenkel, AI;Chen, JGG;Vlachos, DG .Correlating Particle Size and Shape of Supported Ru/gamma-Al2O3 Catalysts with NH3 Decomposition Activity[J].Journal of the American Chemical Society,2009(34):12230-12239. |
| [16] | Yin A;Min X;Zhang Y;Yan C .[J].Journal of the American Chemical Society,2011,133:3816. |
| [17] | Wang X;Wu H;Kuang Q;Huang R Xie Z Zheng L .[J].Langmuir,2010,26:2774. |
| [18] | Kundu S;Wang K;Liang H .[J].Journal of Physical Chemistry C,2009,113:18570. |
| [19] | Christopher P;Ingram D B;Linic S .[J].Journal of Physical Chemistry C,2010,114:9173. |
| [20] | Tian N;Zhou ZY;Sun SG;Ding Y;Wang ZL .Synthesis of tetrahexahedral platinum nanocrystals with high-index facets and high electro-oxidation activity[J].Science,2007(5825):732-735. |
| [21] | Chimentao R J;Kirm I;Medina F;Rodriguez X,Cesteros Y,Salagre P,Sueriras J E.[J].Chemical Communications,2004:846. |
| [22] | Rodriguez J A;Kuhn M .[J].Journal of Physical Chemistry,1994,98:11251. |
| [23] | Taylor K C .[J].Catalysis Review:Science and Engineering,1993,35:457. |
| [24] | Birgerssona H;Erikssonb L;Boutonneta M;J(A)r(A)s S G .[J].Applied Catalysis B:Environmental,2004,54:193. |
| [25] | Martorana A;Deganello G;Longo A;Prestianni A Liotta L Macaluso A Pantaleo G Balema A Mobilioc S .[J].Journal of Solid State Chemistry,2004,177:1268. |
| [26] | Zeinalipour-Yazdi C D;Cooksy A L;Efstathiou A M .[J].Surface Science,2008,602:1858. |
| [27] | Kweskin S J;Rioux R M;Habas S E;Komvopoulos K Yang P Somorjai G A .[J].Journal of Physical Chemistry B,2006,110:15920. |
| [28] | Abild-Pedersen F;Andersson MP .CO adsorption energies on metals with correction for high coordination adsorption sites - A density functional study[J].Surface Science: A Journal Devoted to the Physics and Chemistry of Interfaces,2007(7):1747-1753. |
| [29] | Eischens R P;Francis S A;Pliskin W A .[J].Journal of Physical Chemistry,1956,60:194. |
| [30] | Brandt R K;Sorbello R S;Greenler R G .[J].Surface Science,1992,271:605. |
| [31] | Fanson P T;Delgass W N;Lauterbach J .[J].Journal of Catalysis,2001,204:35. |
| [32] | Schaal M T;Pickerell A C;Williams C T;Monnier J R .[J].Journal of Catalysis,2008,254:131. |
| [33] | Kung K Y;Chen P;Wei F;Shen Y Somorjai G A .[J].Surface Science,2000,463:L627. |
| [34] | McCrea K;Parker J S;Chen P;Somorjai G A .[J].Surface Science,2001,494:238. |
| [35] | Jain S K;Crabb E M;Smart L E;Thompsett D Steele A .[J].Applied Catalysis B:Environmental,2009,89:349. |
| [36] | Minot C .[J].Catalysis Today,2004,89:357. |
| [37] | Miners J H;Cerasari S;Efstathiou V;Kim M Woodruff D P .[J].Journal of Chemical Physics,2002,117:885. |
| [38] | Jain S K;Crabb E M;Smart L E;Thompsett D Steele A .[J].Applied Catalysis B:Environmental,2009,89:349. |
| [39] | Mergler Y J;van Aalst A;van Delft J;Nieuwenhuys B E .[J].Applied Catalysis B:Environmental,1996,10:245. |
| [40] | Dulaurent O;Bianchi D .[J].Applied Catalysis A:General,2000,196:271. |
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