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首页> 外文期刊>Applied Surface Science >A novel 2D/2D MoSe_2/SnSe heterojunction photocatalyst with large carrier transmission channel shows excellent photoelectrochemical performance
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A novel 2D/2D MoSe_2/SnSe heterojunction photocatalyst with large carrier transmission channel shows excellent photoelectrochemical performance

机译：具有大型载波传输通道的新型2D / 2D MOSE_2 / SNSE异质结光催化剂显示出优异的光电化学性能

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摘要

A novel 2D/2D face-to-face MoSe2/SnSe heterojunction photocatalysts have been successfully obtained from SnSe nanosheets and MoSe2 nanoplates. These MoSe2/SnSe heterojunction photocatalysts show well full spectrum absorption. The XPS results demonstrate obvious peaks shift of Sn 3d and Se 3d which reveals a binding was formed between SnSe and MoSe2 and MoSe2/SnSe heterojunction can be also confirmed by the TEM images. Pristine SnSe has a high photocurrent of 8.6 mu A/cm(2) which is much higher than many other metal sulfides and selenides such as SnS2 (1.5 mu A/cm(2)), In2S3 (1.0 mu A/cm(2)), MnS (1.6 mu A/cm(2)), MoS2 (0.73 mu A/cm(2)), MoSe2 (0.58 mu A/cm(2)), ZnSe (0.94 mu A/cm(2)) and FeSe2 (0.49 mu A/cm(2)) in our previous work. This MoSe2/SnSe heterojunction photocatalyst shows excellent photoelectrochemical performance improvement by 3 times than pristine SnSe under a compositing ratio of 5.0% MoSe2. The photocurrent of the heterojunction photocatalyst can reach 26.2 mu A/cm(2). The large improvement of photoelectrochemical performance can be ascribed to the 2D/2D face-to-face contact between SnSe nanosheets and MoSe2 nanoplates. There is carriers' transmission channel between the heterojunction which can improve the separation efficiency. The work develops a potential new energy material.
机译：已经成功地从SNSE纳米片和MOSE2纳米板中获得了一种新的2D / 2D面对面MOSE2 / SNSE异质结光催化剂。这些MOSE2 / SNSE异质结光催化剂显示出良好的谱吸收。 XPS结果展示了SN 3D和SE 3D的明显峰值，其显示在SNSE和MOSE2之间形成绑定，并且可以通过TEM图像确认MOSE2 / SNSE异质结。原始SnSE具有8.6μA/ cm（2）的高光电流，其远高于许多其他金属硫化物和硒化酯，例如SNS2（1.5μma/ cm（2）），In2S3（1.0μma/ cm（2） ），MNS（1.6μA/ cm（2）），MOS2（0.73μA/ cm（2）），MOSE2（0.58μA/ cm（2）），ZnSe（0.94μA/ cm（2））和FESE2（0.49亩A / cm（2））在我们以前的工作中。该MOSE2 / SNSE异质结光催化剂显示出优异的光电化学性能改善3次，而不是在5.0％MOSE2的合成比下的原始SNSE。异质结光催化剂的光电流可达到26.2μma/ cm（2）。光电化学性能的大提高可以归因于SNSE纳米片和MOSE2纳米板之间的2D / 2D面对面接触。在异质结之间存在载体的传输通道，可以提高分离效率。这项工作发展了潜在的新能源材料。

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  • 来源
    《Applied Surface Science》 |2021年第15期|150311.1-150311.9|共9页
  • 作者

    Cheng Yinsen; Zhang Jun; Chen Chao; Xiong Xiaoshan; Zeng Jinghui; Xi Junhua; Yuan Yong-Jun; Ji Zhenguo;

  • 作者单位

    Hangzhou Dianzi Univ Coll Mat & Environm Engn New Energy Mat Res Ctr Hangzhou 310018 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat & Environm Engn New Energy Mat Res Ctr Hangzhou 310018 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat & Environm Engn New Energy Mat Res Ctr Hangzhou 310018 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat & Environm Engn New Energy Mat Res Ctr Hangzhou 310018 Peoples R China;

    Zhejiang Tech Inst Econ Coll Management & Technol Hangzhou 310018 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat & Environm Engn New Energy Mat Res Ctr Hangzhou 310018 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat & Environm Engn New Energy Mat Res Ctr Hangzhou 310018 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat & Environm Engn New Energy Mat Res Ctr Hangzhou 310018 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    SnSe; MoSe2; Heterostructure; Photoelectrochemistry;

    机译：SNSE;MOSE2;异质结构;光电化学;

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