Zhejiang University

Xiaoping Wang

Yiwen Pan

Yunwen Shen

Zhentao Sun

A reference electrode with a sulfonated polyether ether ketone/ionic liquid (SPEEK/IL) sandwich structure, and a preparation method and use thereof are provided. In the reference electrode, an end of a reference electrode main body is provided with the SPEEK/IL sandwich structure; the SPEEK/IL sandwich structure includes two layers of SPEEK/IL composite film and one layer of SPEEK film, and the SPEEK film is arranged at an outermost layer of the SPEEK/IL sandwich structure.

Reference electrode with SPEEK/IL sandwich structure, and preparation method and use thereof

An iridium/iridium oxide electrode for quantitatively detecting pH in a sulfide ion environment, and a preparation method and use thereof are provided. In the present disclosure, a sensitive layer of the iridium/iridium oxide electrode is coated with a sulfonated polyether ether ketone/ionic liquid (SPEEK/IL) sandwich structure. The SPEEK/IL sandwich structure includes two layers of SPEEK/SiO/IL composite film and one layer of SPEEK film. The SPEEK film is arranged on an outermost layer. The SPEEK/IL sandwich structure covered on a surface of the electrode has an isolation effect on ions other than hydrogen ions, and especially shows a desirable isolation effect on sulfide ions with a smaller ion size. In this way, the electrode is not easily disturbed by redox substances in a complex aqueous environment.

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Zhoushan, China

Xiaoping Wang