• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Efficient Plasmonic Au/CdSe Nanodumbbell for Photoelectrochemical Hydrogen Generation beyond Visible Region
【24h】

Efficient Plasmonic Au/CdSe Nanodumbbell for Photoelectrochemical Hydrogen Generation beyond Visible Region

机译：高效的等离子体AU / CDSE NANODUMBBELS用于光电化学氢的发电超出可见区域

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

In this communication, light harvesting and photoelectrochemical (PEC) hydrogen generation beyond the visible region are realized by an anisotropic plasmonic metal/semiconductor hybrid photocatalyst with precise control of their topology and heterointerface. Controlling the intended configuration of the photocatalytic semiconductor to anisotropic Au nanorods' plasmonic hot spots, through a water phase cation exchange strategy, the site-selective overgrowth of a CdSe shell evolving from a core/shell to a nanodumbbell is realized successfully. Using this strategy, tip-preferred efficient photoinduced electron/hole separation and plasmon enhancement can be realized. Thus, the PEC hydrogen generation activity of the Au/CdSe nanodumbbell is 45.29 mu mol cm(-2) h(-1) (nearly 4 times than the core/shell structure) beyond vis (lambda 700 nm) illumination and exhibits a high faradic efficiency of 96% and excellent stability with a constant photocurrent for 5 days. Using surface photovoltage microscopy, it is further demonstrated that the efficient plasmonic hot charge spatial separation, which hot electrons can inject into CdSe semiconductors, leads to excellent performance in the Au/CdSe nanodumbbell.
机译：在这种通信中，通过各向异性等级的血浆金属/半导体杂合光催化剂实现超出可见区域的光收割和光电化学（PEC）氢气通过精确控制其拓扑和异偶表面。通过水相阳离子交换策略控制光催化半导体的预期构型至各向异性Au纳米棒的等离子体热点，成功地实现了从芯/壳进化到纳米铃的Cdse壳的场地选择性过度生长。使用该策略，可以实现尖端优选的有效光抑制电子/孔分离和等离子体增强。因此，Au / Cdse纳米铃的PEC氢气产生活性为45.29μmmolcm（-2）h（-2）h（-1）（比核/壳结构的近4次），超过Vis（lambda> 700nm）照明，并且展示a高度效率为96％，稳定性优异，恒定的光电流为5天。使用表面光电动电压显微镜，进一步证明了热电子可以注入CDSE半导体的有效等离子体热电荷空间分离，导致Au / Cdse Nanodumbbell中的优异性能。

著录项

  • 来源
    《Advanced energy materials》 |2019年第15期|1803889.1-1803889.9|共9页
  • 作者

    Wang Hongzhi; Gao Yuying; Liu Jia; Li Xinyuan; Ji Muwei; Zhang Erhuan; Cheng Xiaoyan; Xu Meng; Liu Jiajia; Rong Hongpan; Chen Wenxing; Fan Fengtao; Li Can; Zhang Jiatao;

  • 作者单位

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Chinese Acad Sci Dalian Natl Lab Clean Energy Dalian Inst Chem Phys State Key Lab Catalysis Zhongshan Rd 457 Dalian 116023 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China|Shenzhen Univ Coll Chem & Environm Engn Inst Low Dimens Mat Genome Initiat Shenzhen 518060 Peoples R China|Tsinghua Univ Grad Sch Shenzhen Shenzhen 518055 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

    Chinese Acad Sci Dalian Natl Lab Clean Energy Dalian Inst Chem Phys State Key Lab Catalysis Zhongshan Rd 457 Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Natl Lab Clean Energy Dalian Inst Chem Phys State Key Lab Catalysis Zhongshan Rd 457 Dalian 116023 Peoples R China;

    Beijing Inst Technol Sch Mat Sci & Engn Beijing Key Lab Construct Tailorable Adv Funct Ma Expt Ctr Adv Mat Beijing 100081 Peoples R China;

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

    near-infrared; photoelectrochemical; plasmon enhancement; solar-to-hydrogen; surface photovoltage;

    机译：近红外;光电化学;等离子体增强;太阳能 - 氢;表面光电压;

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