Tungsten trioxide micropheres were prepared by spray pyrolysis, and tungsten carbidemicrospheres were produced by spray pyrolysis-low temperature reduction and carbonization technology.Multi-walled carbon nanotube-tungsten carbide composites were prepared by the continuous reductionand carbonization process using multi-walled carbon nanotubes (MWCNTs) and WO_3 precursor by mo-lecular level mixing and calcination. The morphology and structure of the samples were characterized byscanning electron microscope and transmission electron microscope. Furthermore, the crystal phase was identified by X-ray diffraction. The electrocatalytic activity of the sample was analyzed by means of me-thanol oxidation. Tungsten carbide microspheres were catalytic active for methanol oxidation reaction.Nevertheless tungsten trioxide microspheres and multi-walled carbon nanotube-tungsten carbide compos-ites were not catalytic active for methanol oxidation reaction. These results indicate that tungsten carbide micropheres are promising catalyst for methanol oxidation.
参考文献
| [1] | Haolin Tang;Shenlong Wang;Mu Pan;San Ping Jiang;Yunzhang Ruan .Performance of direct methanol fuel cells prepared by hot-pressed MEA and catalyst-coated membrane (CCM)[J].Electrochimica Acta,2007(11):3714-3718. |
| [2] | Park KW;Sung YE;Toney MF .Structural effect of PtRu-WO3 alloy nanostructures on methanol electrooxidation[J].Electrochemistry communications,2006(2):359-363. |
| [3] | Rajeswari J;Viswanathan B;Varadarajan TK .Tungsten trioxide nanorods as supports for platinum in methanol oxidation[J].Materials Chemistry and Physics,2007(2/3):168-174. |
| [4] | Zheng HJ;Ma CN;Wang W;Huang JG .Nanorod tungsten carbide thin film and its electrocatalytic activity for nitromethane electroreduction[J].Electrochemistry communications,2006(6):977-981. |
| [5] | Li-na, Z;Guo-lu, L;Hai-dou, W;Bin-shi, X;Da-ming, Z;Jia-jun, L .Microstructures and nano mechanical properties of the metal tungsten film[J].Current applied physics: the official journal of the Korean Physical Society,2009(2):510-514. |
| [6] | Guohua Li;Chun'an Ma;Yifan Zheng;Weiming Zhang .Preparation and electrocatalytic activity of hollow global tungsten carbide with mesoporosity[J].Microporous and Mesoporous Materials,2005(3):234-240. |
| [7] | Guohua Li;Chun'an Ma;Junyan Tang;Jiangfeng Sheng .Preparation and electrocatalytic property of WC/carbon nanotube composite[J].Electrochimica Acta,2007(5):2018-2023. |
| [8] | Chunan Ma;Jiangfeng Sheng;Nigel Brandon;Cheng Zhang;Guohua Li .Preparation of tungsten carbide-supported nano Platinum catalyst and its electrocatalytic activity for hydrogen evolution[J].International journal of hydrogen energy,2007(14):2824-2829. |
| [9] | Zigang Wu;Wei Feng;Yiyu Feng .Preparation and characterization of chitosan-grafted multiwalled carbon nanotubes and their electrochemical properties[J].Carbon: An International Journal Sponsored by the American Carbon Society,2007(6):1212-1218. |
| [10] | Rosenbaum M;Zhao F;Quaas M;Wulff H;Schroder U;Scholz F .Evaluation of catalytic properties of tungsten carbide for the anode of microbial fuel cells[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2007(3/4):261-269. |
| [11] | Raman Ganesan;Jae Sung Lee .An electrocatalyst for methanol oxidation based on tungsten trioxide microspheres and platinum[J].Journal of Power Sources,2006(1):217-221. |
| [12] | Jinfeng Zhao;Troy Holland;Cosan Unuvar .Sparking plasma sintering of nanometric tungsten carbide[J].International Journal of Refractory Metals & Hard Materials,2009(1):130-139. |
| [13] | A. Regina;E. Fontananova;E. Drioli .Preparation and characterization of sulfonated PEEK-WC membranes for fuel cell applications. A comparison between polymeric and composite membranes[J].Journal of Power Sources,2006(1):139-147. |
| [14] | Kunchan Lee;Akimitsu Ishihara;Shigenori Mitsushima;Nobuyuki Kamiya;Ken-ichiro Ota .Stability and electrocatalytic activity for oxygen reduction in WC + Ta catalyst[J].Electrochimica Acta,2004(21):3479-3485. |
| [15] | C.S. Blackman;X. Correig;V. Katko;A. Mozalev;I.P. Parkin;R. Alcubilla;T. Trifonov .Templated growth of tungsten oxide micro/nanostructures using aerosol assisted chemical vapour deposition[J].Materials Letters,2008(30):4582-4584. |
| [16] | Xiaoliang Shi;Hua Yang;Peng Sun .Synthesis of multi-walled carbon nanotube-tungsten carbide composites by the reduction and carbonization process[J].Carbon: An International Journal Sponsored by the American Carbon Society,2007(9):1735-1742. |
| [17] | Nicolas Keller;Barbara Pietruszka;Valerie Keller .A new one-dimensional tungsten carbide nanostructured material[J].Materials Letters,2006(13/14):1774-1777. |
| [18] | C. Bock;B. MacDougall .The electrochemical oxidation of organics using tungsten oxide based electrodes[J].Electrochimica Acta,2002(20):3361-3373. |
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