Chemical Research in Chinese Universities ›› 2021, Vol. 37 ›› Issue (3): 763-771.doi: 10.1007/s40242-020-0234-8

• Articles • Previous Articles     Next Articles

3D Tungsten Trioxide Nanosheets as Optoelectronic Materials for On-chip Quantification of Global Antioxidant Capacity

DAI Mengjiao1,2, MA Weiguang3, HAN Fangjie1,2, HAN Dongfang4, HAN Lipeng4, WANG Wei1,4, ZHAO Bolin4, HAN Dongxue1,2,4, NIU Li1,2,4, WANG Zhenxin1,2   

  1. 1. State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China;
    2. University of Science and Technology of China, Hefei 230026, P. R. China;
    3. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China;
    4. Center for Advanced Analytical Science, c/o School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China
  • Received:2020-07-14 Revised:2020-09-03 Online:2021-06-01 Published:2021-05-31
  • Contact: MA Weiguang, WANG Wei E-mail:wgma@dicp.ac.cn;wangw@gzhu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China(Nos.21527806, 21627809, 21727815), the Project of the Department of Science and Techniques of Guangdong Province, China(No.2019B010933001) and the Project of the Department of Science and Techniques of Jilin Province, China(Nos.20170442014SC, 20170203004SF, 20170101183JC, 20180201021GX).

Abstract: The photoelectrochemical properties of semiconductors mainly depend on the size and shape of the corresponding nanoparticles. Herein, 3D WO3 nanosheets were controllably synthesized with the aid of polyethyleneimine, which presents enhanced photocurrent responses. Based on this excellent photoelectrochemical property, a photoelectrochemical chip was prepared by lithography technology for the smart monitoring of the antioxidant capacity(AC) in red wine and exhibits a series of advantages inclu-ding rapid response time, high sensitivity, and long-lasting stability. The mechanism of the present photoelectrochemical sensing was explored and shows a single electron transfer reaction. Furthermore, only 200 μL of samples are required for one testing, which demonstrates that the present photoelectrochemical chip can be potentially integrated with a portable commercial device(such as a mobile phone) for further research and development of food and drug supervision.

Key words: 3D tungsten trioxide nanosheet, Photoelectrochemical chip, Antioxidant capacity assessment, Red wine assessment, Gallic acid