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Structure Design and Performance Research of WO3 Hydrogen Gasochromic Film Prepared by Solvothermal Synthesis Assisted with Electrodeposition of Seed Layer
Advanced Materials Interfaces ( IF 5.4 ) Pub Date : 2022-02-05 , DOI: 10.1002/admi.202101355
Chenjing Gao 1 , Xingwu Guo 1, 2 , Lewen Nie 1 , Xuan Wu 1 , Liming Peng 1, 2 , Juan Chen 1, 2 , Wenjiang Ding 1, 2
Affiliation  

The time-consuming and laborious heat treatment is indispensable for preparing seed layer in solvothermal synthesis of WO3 film. Herein, WO3 film is prepared composed of single crystal WO3 nanowires on indium tin oxide (ITO) glass assisted with simple and energy-saving electrodeposited seed layer for the first time. The catalyst Pt is sputtered on it for 30 s after WO3 film is synthesized to form the hydrogen gasochromic film. The film structure is redesigned to improve its hydrogen gasochromic properties further. Before WO3 film is solvothermally synthesized, Pt is sputtered on seed layer for 15 s, then it is sputtered for 15 s again after WO3 film is prepared. The Pt sputtered on seed layer greatly changes the morphology of nanowires, making them sparse, slender, and cross-linked like a bird's nest. Moderate 37% HCl is added during the solvothermal process to promote the growth of WO3 nanowires. The variation of transmittance (wavelength: 1000 nm), coloring rate (4% H2/Ar) and bleaching rate (air) of WO3 hydrogen gasochromic film with new structure at room temperature are 69.1%, 3.1%/s (increases 19.6%) and 0.85%/s (increases 193%), respectively. This study offers a new strategy for seed layer technology of WO3 film and structural design of WO3 hydrogen gasochromic film.

中文翻译:

溶剂热法辅助种子层电沉积制备WO3氢致变色薄膜的结构设计与性能研究

在溶剂热合成WO 3薄膜中,费时费力的热处理对于晶种层的制备是必不可少的。在此,首次在氧化铟锡(ITO)玻璃上制备了由单晶WO 3纳米线组成的WO 3薄膜,并辅以简单节能的电沉积种子层。合成WO 3薄膜后,在其上溅射催化剂Pt 30 s ,形成氢气气致变色薄膜。对薄膜结构进行了重新设计,以进一步提高其氢气致变色性能。在溶剂热合成WO 3薄膜前,Pt在种子层上溅射15 s,WO 3后再次溅射15 s电影准备好了。Pt溅射在种子层上,极大地改变了纳米线的形态,使其稀疏、细长、交联如鸟巢。在溶剂热过程中加入适量的 37% HCl 以促进 WO 3纳米线的生长。新结构的WO 3氢气致变色膜在室温下透射率(波长:1000 nm)、着色率(4% H 2 /Ar)和漂白率(空气)的变化分别为69.1%、3.1%/s(增加19.6 %) 和 0.85%/s(增加 193%)。本研究为WO 3薄膜的种子层技术和WO 3氢气致变色薄膜的结构设计提供了新的策略。
更新日期:2022-02-05
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