Title:
SUPERHYDROPHILIC THICK-FILM PH SENSOR BASED ON CHEMICAL ETCHING METHOD, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/272978
Kind Code:
A1
Abstract:
Disclosed in the present invention are a superhydrophilic thick-film pH sensor based on a chemical etching method, and a preparation method therefor. The sensor comprises a substrate, and a working electrode and a reference electrode covering the surfaces of the substrate, wherein the working electrode comprises a titanium sheet attached to one side of the substrate, and the front portion of the outer surface of the titanium sheet is covered with a titanium dioxide sensitive layer; the other side of the substrate is attached with a conductive layer, the reference electrode is located on the conductive layer, and the surface of the reference electrode is coated with a naphthol layer; and an insulating glue wraps the substrate, only leaving the areas where the working electrode and the reference electrode are located exposed. The working electrode is obtained by means of soaking the titanium sheet in an NaOH solution at 80ºC, and is integrated with the reference electrode prepared on the substrate to form the thick-film pH sensor. The superhydrophilic thick-film pH sensor of the present invention has a simple structure, high detection sensitivity, and good stability, is capable of quickly and accurately determining the pH value of a heterogeneous system, has a simple preparation process, easy to control, low production cost, free of the generation of toxic substances during production, safe, friendly to the environment, and more suitable for the on-line pH detection of cultivation soil, cultivation media, etc., during agricultural production.
Inventors:
CHEN CHENG (CN)
ZHANG XILIANG (CN)
MAO TIANYU (CN)
SU XIAOQING (CN)
ZHANG YALEI (CN)
ZHANG XILIANG (CN)
MAO TIANYU (CN)
SU XIAOQING (CN)
ZHANG YALEI (CN)
Application Number:
PCT/CN2021/120525
Publication Date:
January 05, 2023
Filing Date:
September 26, 2021
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
G01N27/30
Foreign References:
| CN113406167A | 2021-09-17 | |||
| CN106018516A | 2016-10-12 | |||
| CN104007158A | 2014-08-27 | |||
| CN105842313A | 2016-08-10 |
Other References:
ZHAO, RONGRONG ET AL.: "A pH sensor based on the TiO2 nanotube array modified Ti electrode", ELECTROCHIMICA ACTA, vol. 55, no. 20, 1 August 2010 (2010-08-01), XP027114537, ISSN: 0013-4686
CHEN JINGYUN, ZONG-JIAN LIU, HUAN ZHOU, ZHENG YI-FAN: "A Study on Preparation of TiO 2 Thin Films by Alkali Treatment of Ti Foils", JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES, ZHEJIANG DAXUE CAILIAO YU HUAXUE GONGCHENG XUEYUAN, CN, vol. 27, no. 6, 31 December 2013 (2013-12-31), CN , pages 1051 - 1057, XP093018857, ISSN: 1003-9015, DOI: 10.3969/j.issn.1003-9015.2013.06.021
CHEN JINGYUN, ZONG-JIAN LIU, HUAN ZHOU, ZHENG YI-FAN: "A Study on Preparation of TiO 2 Thin Films by Alkali Treatment of Ti Foils", JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES, ZHEJIANG DAXUE CAILIAO YU HUAXUE GONGCHENG XUEYUAN, CN, vol. 27, no. 6, 31 December 2013 (2013-12-31), CN , pages 1051 - 1057, XP093018857, ISSN: 1003-9015, DOI: 10.3969/j.issn.1003-9015.2013.06.021
Attorney, Agent or Firm:
NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)
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