在乙二醇共还原H2PtCl6和SnCl2的过程中加入Ni(NO3)2作为助剂制备了PtSn/C-Ni催化剂. 程序升温还原实验检测到该催化剂中存在Sn(Ⅱ)/Sn(Ⅳ)氧化还原电对. 线性扫描、单电池性能测试和CO溶出实验表明,提高催化剂中Sn(Ⅱ)/Sn(Ⅳ)的比值能显著提高催化剂的乙醇电化学氧化活性和抗CO中毒能力. 催化剂电催化活性提高的原因可能是Sn(Ⅱ)/Sn(Ⅳ)电对加快了(OH)ads 物种在催化剂中的传递速率,促进了乙醇电化学氧化过程中产生的类CO中间物种在Pt表面的氧化.
参考文献
| [1] | Ianniello R;Schmidt V M;Rodriguez J L;Pastor E .[J].Journal of Electroanalytical Chemistry,1999,471(02):167. |
| [2] | Leger J M;Rousseau S;Coutanceau C;Hahn F Lamy C .[J].Electrochimica Acta,2005,50(25-26):5118. |
| [3] | Zhou W J;Zhou Z H;Song S Q;Li W Z Sun G Q Tsiakaras P Xin Q .[J].Applied Catalysis B:Environmental,2003,46(02):273. |
| [4] | Colmati F;Antolini E;Gonalez E R .[J].Journal of the Electrochemical Society,2007,154(01):B39. |
| [5] | 姜鲁华,周振华,周卫江,王素力,汪国雄,孙公权,辛勤.直接乙醇燃料电池PtSn/C电催化剂的合成表征和性能[J].高等学校化学学报,2004(08):1511-1516. |
| [6] | Arenz M;Stamenkovic V;Blizanac B B;Mayrhofer K J J Markovic N M Ross P N .[J].Journal of Catalysis,2005,232(02):402. |
| [7] | Ishikawa Y.;Cabrera CR.;Liao MS. .Oxidation of methanol on platinum, ruthenium and mixed Pt-M metals (M = Ru, Sn): a theoretical study[J].Surface Science: A Journal Devoted to the Physics and Chemistry of Interfaces,2000(1):66-80. |
| [8] | Anderson AB.;Shiller P.;Grantscharova E. .ON THE LACK OF ACTIVITY OF SUBSTITUTIONAL SN ATOMS TOWARD THE ELECTRO-OXIDATION OF CO ON PT ANODES - MOLECULAR ORBITAL THEORY[J].Journal of the Electrochemical Society,1995(6):1880-1884. |
| [9] | Anderson A B;Seong S;Grantscharova E .[J].Journal of Physical Chemistry,1996,100(44):17535. |
| [10] | Zhou Z H;Wang S L;Zhou W J;Wang G X Jiang L H Li W Z Song S Q Liu J G Sun G Q Xin Q.[J].Chemical Communications,2003(03):394. |
| [11] | Li W Z;Liang C H;Qiu J S;Zhou W J Han H M Wei Z B Sun G Q Xin Q .[J].Carbon,2002,40(05):791. |
| [12] | Larcher D;Patrice R .[J].Journal of Solid State Chemistry,2000,154(02):405. |
| [13] | Radmilovic V.;Ross PN.;Gasteiger HA. .STRUCTURE AND CHEMICAL COMPOSITION OF A SUPPORTED PT-RU ELECTROCATALYST FOR METHANOL OXIDATION[J].Journal of Catalysis,1995(1):98-106. |
| [14] | Colmenares L;Wang H;Jusys Z;Jiang L Yan S Sun G Q Behm R J .[J].Electrochimica Acta,2006,52(01):221. |
| [15] | Baronetti G T;de Miguel S R;Scelza O A;Castro A A .[J].Applied Catalysis,1986,24(1-2):109. |
| [16] | Jiang L H;Sun G Q;Zhou Z H;Xin Q .[J].Catalysis Today,2004,93-95(01):665. |
| [17] | Park K-W;Choi J-H;Kwon B-K;Lee S-A Ha H-Y Hong S-A Sung Y-E Kim H Wieckowski A .[J].Journal of Physical Chemistry B,2002,106(08):1869. |
| [18] | Samjeske G;Wang H S;Loffler T;Baltruschat H .[J].Electrochimica Acta,2002,47(22-23):3681. |
| [19] | Stark D S;Harris M R .[J].Journal of Physics E:Scientific Instruments,1983,16(06):492. |
| [20] | 孔景临,薛宽宏,何春建,邵颖,陈巧玲,姚建林,谢泳,田中群.镍纳米线电极的电化学氧化还原行为及其对乙醇的电化学氧化催化作用[J].应用化学,2001(06):462-465. |
| [21] | Swider KE.;Hagans PL.;Rolison DR.;Merzbacher CI. .Aerogels as a tool to study the electrical properties of ruthenium dioxide[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1998(1):348-352. |
| [22] | Long J W;Stroud R M;Swider-Lyons K E;Rolison D R .[J].Journal of Physical Chemistry B,2000,104(42):9772. |
| [23] | Radmilovic V;Richardson TJ;Chen SJ;Ross PN .Carbon-supported Pt-Sn electrocatalysts for the anodic oxidation of H-2, CO, and H-2/CO mixtures. Part I. Microstructural characterization[J].Journal of Catalysis,2005(1):199-209. |
| [24] | Wu G;Swaidan R;Cui G F .[J].Journal of Power Sources,2007,172:180. |
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