| 电镀法制备Pt/TiO2纳米管电极及其电催化析氢性能 | |
| Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance | |
| 摘要: 采用阳极氧化法制备得到锐钛矿型二氧化钛（TiO2）纳米管阵列，在其表面通过电镀法沉积Pt，得到了低铂的Pt/TiO2纳米管电极（Pt/TiO2-NTs）。通过扫描电子显微镜和透射电子显微镜对其进行形貌表征后发现，Pt较为均匀地分布于TiO2纳米管阵列中。进一步的电催化析氢结果表明，Pb/TiO2-NTs在10 mA·cm-2时，过电位为0.079 V，塔菲尔斜率为42.7 mV·dec-1，较Pt/TiO2致密膜电极（Pt/TiO2-F）以及商业Pt/C催化剂显示了更为优异的催化活性。同时，在长循环稳定性测试（3 000个周期）中，Pb/TiO2-NTs相较于上述2种对比电极显示了更为优异的稳定性。 | |
| 关键词: TiO2纳米管载体 电镀 铂基催化剂 电催化析氢 | |
| 基金项目: 北京市长城学者培养计划项目（No.CIT&TCD20190307）、北京市自然科学基金（No.Z210016）和北京市百千万人才计划项目（No.2020016）资助 | |
| Abstract: Here, Pt modified anatase-type titanium dioxide (TiO2) nanotube arrays were prepared by electroplating method for a low-platinum Pt/TiO2 nanotubes electrode (Pt/TiO2-NTs). By contrast, we fixed Pt on TiO2 dense film by the same procedure as a control sample (Pt/TiO2-F). The scanning electron microscopy and transmission electron microscopy observation showed that Pt nanoparticles were distributed uniformly in nanotube arrays, and Pt/TiO2-NTs showed a higher efficiency in electrocatalytic hydrogen evolution compared with Pt/TiO2-F and commercial Pt/C catalyst, in which the overpotential of Pt/TiO2-NTs was 0.079 V, the Tafel slope was 42.7 mV·dec-1 at 10 mA·cm-2. The catalytic activity of 3 000 cycles duration stability test results showed that Pt/TiO2-NTs exhibited excellent stability compared with the above contrast electrodes. | |
| Keywords: TiO2 nanotubes carrier electroplating platinum-based catalyst electrocatalytic hydrogen evolution | |
| 投稿时间：2021-04-01 修订日期：2021-12-14 | |
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| 吴安冉,陈言慧,王心心,周文元,何佳伟,王金淑,李洪义.电镀法制备Pt/TiO2纳米管电极及其电催化析氢性能[J].无机化学学报,2022,38(2):227-236. | |
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