制备条件对WS2 中1T/2H相的影响

doi:10.11901/1005.3093.2023.488

材料研究学报

2024, Vol. 38

Issue (10): 791-800 DOI: 10.11901/1005.3093.2023.488

研究论文

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制备条件对WS₂ 中1T/2H相的影响

任学昌, 杨镇瑜(

), 冯浩, 安菊, 曹鹏飞, 付宁

兰州交通大学环境与市政工程学院兰州 730070

Influence of Preparation Process Parameters on Relative Amount of Two-phase 1T/2H and Performance of WS₂

REN Xuechang, YANG Zhenyu(

), FENG Hao, AN Ju, CAO Pengfei, FU Ning

School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

引用本文:

任学昌, 杨镇瑜, 冯浩, 安菊, 曹鹏飞, 付宁. 制备条件对WS₂ 中1T/2H相的影响[J]. 材料研究学报, 2024, 38(10): 791-800.
Xuechang REN, Zhenyu YANG, Hao FENG, Ju AN, Pengfei CAO, Ning FU. Influence of Preparation Process Parameters on Relative Amount of Two-phase 1T/2H and Performance of WS₂[J]. Chinese Journal of Materials Research, 2024, 38(10): 791-800.

全文: PDF(18600 KB) HTML

摘要:

用简单的溶剂热法制备1T/2H相WS₂纳米材料，改变前驱体中WCl₆/TAA的摩尔比和反应温度调控WS₂中1T相的含量。用X射线衍射(XRD)分析、X射线光电子能谱分析(XPS)和扫描电镜(SEM)观察探讨反应条件对产物中1T相含量的影响，并用共催化降解实验证实了W-200 (W-12)有最佳的助催化性能。用透射电镜(TEM)观察和拉曼光谱分析证实了W-200具有最佳的1T相含量。对比反应前后材料的状态发现，WS₂在使用过程中会产生硫空位和具有优异的可循环使用性。

关键词 ：金属材料, 过渡金属硫化物, 1T/2H-WS₂, 硫空位

Abstract：

Transitional metal dichalcogenides (TMDs) materials have attracted great interest as a potential multifunctional material. However, the synthesis method of 1T-WS₂ is limited and complex. In this paper, 1T/2H phase WS₂ nanomaterials were prepared by a simple solvothermal method. For the first time, the content of 1T phase in WS₂ could be adjusted by controlling the ratio of WCl₆/TAA in the precursor and the reaction temperature. The effect of reaction conditions on the content of 1T phase in the product was confirmed by XRD, XPS and SEM, while the co-catalytic degradation test result confirmed that W-200 (W-12) had the best co-catalytic effect. Finally, TEM and Raman spectroscopy confirmed that W-200 had the best content of the 1T phase. By comparing the state of the material before and after the reaction, it is proved that sulfur vacancies will be generated during the use of WS₂ and it has excellent recyclability.

Key words： metallic materials transition metal sulfides 1T/2H-WS₂ sulfur vacancies

收稿日期: 2023-10-07

ZTFLH:

TB31

基金资助:兰州交通大学青年学者科学基金(2022044);甘肃省优秀研究生“创新之星”资助项目(2023CXZX-562)

通讯作者: 杨镇瑜，657501365@qq.com，研究方向为水处理高级氧化技术

Corresponding author: YANG Zhenyu, Tel: 17693109113, E-mail: 657501365@qq.com

作者简介: 任学昌，男，1970年生，教授，博士

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图1 不同WCl6/TAA制备条件下WS2的XRD谱

图2 不同WCl6/TAA比条件下WS2的SEM照片

图3 不同参比下WS2的XPS谱

图4 不同WCl6/TAA比条件下WS2对苯酚的助催化降解性能及其反应速率常数

图5 在不同温度制备的WS2的XRD谱

图6 在不同温度制备的WS2的SEM照片

图7 在相同温度制备的WS2的XPS谱

图8 在不同温度制备的WS2对苯酚的助催化降解性能及其反应速率常数

图9 W-200的EDS图像

图10 W-200的高分辨率投射图像和晶格间距

图11 W-200的拉曼光谱

图12 W-200反应前后的SEM图像

图13 W-200反应前后的XRD谱和Raman谱

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