Patent ID: 11885762
Assignee: ZHEJIANG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An iridium/iridium oxide electrode for quantitatively detecting a pH in a sulfide ion environment, wherein a sensitive layer at an end of a pH electrode main body is provided with a SPEEK/IL (sulfonate polyether ether ketone/ionic liquid) sandwich structure; the SPEEK/IL sandwich structure comprises two layers of SPEEK/SiOx/IL composite film and one layer of SPEEK film, and the SPEEK film serves as an outermost layer of the SPEEK/IL sandwich structure; an ionic liquid (IL) layer is separately filled between the pH electrode main body and an inner layer of the two layers of SPEEK/SiOx/IL composite film, between the two layers of SPEEK/SiOx/IL composite film, and between an outer layer of the two layers of SPEEK/SiOx/IL composite film and the SPEEK film; the pH electrode main body is an Ir/IrOx pH electrode; the SPEEK/IL sandwich structure completely covers IrOx on a surface of the pH electrode main body; wherein SPEEK refers to a sulfonated polyether ether ketone, and IL refers to an ionic liquid; and
the IL of the IL layer is [HOEtMIM][Cl] with a structural formula as follows:,