• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Synergistic Effect of Si Doping and Heat Treatments Enhances the Photoelectrochemical Water Oxidation Performance of TiO2 Nanorod Arrays
【24h】

Synergistic Effect of Si Doping and Heat Treatments Enhances the Photoelectrochemical Water Oxidation Performance of TiO2 Nanorod Arrays

机译：Si掺杂和热处理的协同作用增强了TiO2纳米棒阵列的光电化学水氧化性能

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

TiO2 is a very promising photocatalytic material due to its merits including low cost, nontoxicity, high chemical stability, and photocorrosion resistance. However, it is also known that TiO2 is a wide bandgap material, and it is still challenging to achieve high photocatalytic performance driven by solar light. In this paper, silicon-doped TiO2 nanorod arrays are vertically grown on fluorine-doped tin oxide substrates and then are heat treated both in air and in vacuum. It is found that the silicon doping together with the heat treatment brings synergic effect to TiO2 nanorod films by increasing the crystallinity, producing abundant oxygen vacancies, enhancing the hydrophilicity as well as improving the electronic properties. When used as photoanodes in photoelectrochemical water splitting, under the condition of AM 1.5G simulated solar irradiation and without using any cocatalysts, these nanorod films show photocurrent density as high as 0.83 mA cm(-2) at a potential of 1.23 V versus reversible hydrogen electrode, which is much higher than that of the TiO2 nanorod films without doping or heat treating. The silicon-doped TiO2 nanorod array films described in this paper are envisioned to provide valuable platforms for supporting catalysts and cocatalysts for efficient solar-light-assisted water oxidation and other solar-light-driven photocatalytic applications.
机译：TiO2由于其优点包括低成本，无毒，高化学稳定性和耐光蚀性，是一种非常有前途的光催化材料。然而，还已知TiO 2是宽带隙材料，并且仍然难以实现由太阳光驱动的高光催化性能。在本文中，硅掺杂的TiO2纳米棒阵列在氟掺杂的氧化锡衬底上垂直生长，然后在空气和真空中进行热处理。发现硅掺杂与热处理一起通过增加结晶度，产生大量氧空位，增强亲水性以及改善电子性能而对TiO 2纳米棒膜产生协同作用。当在AM 1.5G模拟太阳辐射条件下且不使用任何助催化剂的情况下用作光电化学水分解中的光阳极时，这些纳米棒膜在可逆氢的条件下在1.23 V的电势下显示出高达0.83 mA cm（-2）的光电流密度电极，比未经掺杂或热处理的TiO2纳米棒薄膜要高得多。可以预见，本文中描述的硅掺杂的TiO2纳米棒阵列膜可提供有价值的平台，以支撑催化剂和助催化剂，以进行有效的日光辅助水氧化和其他日光驱动的光催化应用。

著录项

  • 来源
    《Advanced Functional Materials》 |2017年第31期|1701575.1-1701575.9|共9页
  • 作者

    Chen Changlong; Wei Yuling; Yuan Guangzheng; Liu Qinglong; Lu Ranran; Huang Xing; Cao Yi; Zhu Peihua;

  • 作者单位

    Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China;

    Qilu Univ Technol, Minist Educ, Key Lab Pulp & Paper Sci & Technol, Jinan 250353, Shandong, Peoples R China;

    Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China;

    Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China;

    Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China;

    Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China;

    Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China;

    Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    oxygen vacancy; photoelectrochemistry; Si doped TiO2; water splitting; water oxidation;

    机译：氧空位;光电化学;硅掺杂二氧化钛;水分解;水氧化;

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