高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (4): 659.doi: 10.7503/cjcu20180510

• 无机化学 • 上一篇    下一篇

钒钨酸盐-CdS纳米粒子复合膜的制备与电致变色性能

杨艳艳(), 谭佳宁, 冯素洋, 祁岳, 王杨, 丁元生, 曲小姝, 连丽丽, 于晓洋   

  1. 吉林化工学院化学与制药工程学院, 吉林 132022
  • 收稿日期:2018-07-17 出版日期:2019-04-03 发布日期:2018-12-05
  • 作者简介:

    联系人简介: 杨艳艳, 女, 博士, 教授, 主要从事多酸化学方面的研究. E-mail: yyy200409@163.com

  • 基金资助:
    国家自然科学基金(批准号: 21605056)、 吉林省自然科学基金(批准号: 20180101191JC)、 吉林省教育厅“十三五”科学技术项目(批准号: JJKH20180548KJ)和吉林市科技创新发展计划项目(批准号: 201750215)资助.

Preparation and Properties of Vanadium Tungstate-CdS Nanoparticles Electrochromic Composite Films

YANG Yanyan*(), TAN Jianing, FENG Suyang, QI Yue, WANG Yang, DING Yuansheng, QU Xiaoshu, LIAN Lili, YU Xiaoyang   

  1. College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
  • Received:2018-07-17 Online:2019-04-03 Published:2018-12-05
  • Contact: YANG Yanyan E-mail:yyy200409@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21605056), the Natural Science Foundation of Jilin Province, China(No.20180101191JC), the “13th Five-Year” Science and Technology Project of the Education Department of Jilin Province, China(No.JJKH20180548KJ) and the Scientific and Technological Innovation Development Project of Jilin City, China(No.201750215).

摘要:

通过层-层自组装方法制备了由Dawson结构三钒取代型钨酸盐1-K9P2W15V3O62·18H2O(P2W15V3)与CdS纳米粒子构筑的复合膜材料, 研究了CdS纳米粒子添加和复合膜层数对P2W15V3多酸复合膜材料电致变色性能的影响. 采用UV, XRD, SEM和循环伏安等测试手段对复合材料的结构和性能进行了表征; 将电化学工作站和紫外-可见吸收光谱联用, 在-1.0~+1.0 V的电压范围内, 对不同层数、 有无CdS纳米粒子复合的的膜材料的电致变色性能进行研究. 研究结果表明, 20层的复合膜材料性能最佳, 光反差为38.05%, 着色时间为3.57 s, 褪色时间为6.94 s, 最大着色效率达到94.04 cm2/C, 实现了从无色、 蓝色到蓝紫色, 再到无色的可逆颜色变化, 相对于单独P2W15V3膜, 光反差提高46.07%, 着色效率提高96.53%, 电致变色性能显著提高.

关键词: 多酸, 电致变色, 钒钨酸盐, 层-层自组装, CdS纳米粒子

Abstract:

In order to study the effects of the addition of CdS nanoparticles and the number of composite film layers on the electrochromic properties of tri-vanadium substituted Dawson-type tungstate 1-K9P2W15V3O62·18H2O(P2W15V3) polyoxometalate composite films, composite films constructed by P2W15V3 and CdS nanoparticles were prepared by layer-by-layer self-assembly method. The structure and properties of the composite films were characterized by UV-Vis spectroscopy, XRD, SEM and cyclic voltammetry, and electrochemical workstation and UV-visible absorption spectroscopy were used to investigate the electrochromic properties of composite films with different layers and with or without CdS nanoparticles in the voltage range of -1.0—+1.0 V. The results show that the perfomanc of 20-layer composite film is the best, for which the optical contrast is 38.05%, response time for recolorstion and bleaching are 3.57 and 6.94 s, respectively, the maximum coloring efficiency is 94.04 cm2/C, compared with the P2W15V3 film, the optical contrast increases by 46.07% and the color efficiency increases by 96.53%, the electrochromic performance is improved remarkably.

Key words: Polyoxometalate, Electrochromism, Vanadium tungstate, Layer-by-layer assembly, CdS nanoparticles

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