...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electrocatalysis >Oxide Substrate Effect Toward Electrocatalytic Enhancement of Platinum and Ruthenium-Selenium Catalysts
【24h】

Oxide Substrate Effect Toward Electrocatalytic Enhancement of Platinum and Ruthenium-Selenium Catalysts

机译：氧化物对电催化增强铂和钌-硒催化剂的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Titanium dioxide (anatase) and carbon composites were produced. The oxide was synthesized via the sol-gel technique in a carbon matrix. A chemical interaction was revealed by thermal differential analysis since the carbon decomposition temperature shifts in the presence of the oxide. Oxide-carbon composites were used as support for nanodivided platinum and ruthenium-selenide catalyst. The nanoparticles were selectively deposited onto the oxide by means of electron-hole pairs generated on the oxide sites under UV irradiation. A systematic study for Pt was performed as a function of the loading using the oxide-carbon composite substrate and carbon toward the oxygen reduction reaction. A specific activity (mA/cm_(Pt)~2) enhancement of 30% to 40%, at 0.9 V per reversible hydrogen electrode, with respect to carbon-supported samples, was obtained. This effect was also observed on the Ru-Se system and can be attributed to a catalyst-substrate effect.
机译：生产了二氧化钛（锐钛矿）和碳复合材料。通过溶胶-凝胶技术在碳基质中合成氧化物。通过热差分析揭示了化学相互作用，因为碳的分解温度在存在氧化物的情况下发生变化。氧化物-碳复合材料用作纳米级铂和硒化钌催化剂的载体。借助于在紫外线照射下在氧化物位点上产生的电子-空穴对将纳米颗粒选择性地沉积在氧化物上。使用氧化物-碳复合基质和碳进行氧还原反应，根据负载量对Pt进行了系统的研究。相对于碳载样品，在每个可逆氢电极为0.9 V时，比活度（mA / cm_（Pt）〜2）增强了30％至40％。在Ru-Se体系上也观察到了这种效应，并且可以归因于催化剂-底物效应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号