| 吕功煊.一维亚微米多钼酸盐形貌可控合成及氧的电催化还原研究[J].分子催化,2012,(6):529-536 |
| 一维亚微米多钼酸盐形貌可控合成及氧的电催化还原研究 |
| Morphology-controlled synthesis of 1D submicro-structured polyoxomolybdate towards electrocatalytic oxygen reduction |
| 投稿时间：2012-12-07 修订日期：2012-12-16 |
| DOI： |
| 中文关键词: 多钼酸盐，一维亚微米结构，氧电催化还原，醇促进作用 |
| 英文关键词:Polyoxomolybdate 1D submicro-structured Oxygen electroreduction Alcohol promoted |
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| 摘要点击次数: 1929 |
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| 中文摘要: |
| 通过调节反应pH值和反应物种实现了一维亚微米多钼酸盐的控制合成，以钼酸铵和十二烷基苯磺酸钠为原料，在pH=6时制备出亚微米线，在pH=2时制备出亚微米棒，而以钼酸铵和氯化钠为原料，在pH=6时制备出纳米带。在pH=6时，纳米材料在长胶束内生长成亚微米线，而pH值降低至2时，过多的H 不仅会形成大量的Mo3O102-，还会使得胶束变短，因此使得亚微米材料变短，成为亚微米棒。在没有模板剂十二烷基苯磺酸钠时，多钼酸铵就会长成结构更为稳定的纳米带。循环伏安测试结果表明在有机溶剂中，多钼酸盐的亚微米棒对氧电催化还原具有优异活性。研究表明，由于有机醇能与电解质溶液中的H 反应，因此有机醇能显著促进一维多钼酸盐亚微米材料的氧的电催化活性。 |
| 英文摘要: |
| 1D submicro-structured polyoxomolybdate submicro-wires, submicro-rods and nanobelts were synthesized by altering the pH value and reactants. Submicro-wires could be obtained by reacting (NH4)6Mo7O24?4H2O with sodium dodecyl benzene sulfonate (SDBS) at pH=6, and that for submicro-rods at pH=2. However, nanobelts could be synthesized by reacting (NH4)6Mo7O24?4H2O with NaCl at pH=6. In solution of pH=6, polyoxomolybdate should grow up submicro-wires in long micelles. At pH=2, not only more Mo3O102-, but also short micelles formed by excessive H cations, which leaded to the submicro-rods. Without template SDBS, polyoxomolybdate may exist in stable nanobelts. Cyclic voltammetry results indicated that polymolybdate submicro-rods exhibited excellent activity for oxygen electroreduction in organic solvent. Because alcohol could react with H in the electrolyte, the activity of oxygen electroreduction over polymolybdate could be obviously promoted in the presence of alcohol. |
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