Shandong Key Laboratory of Biochemical Analysis;
College of Chemistry and Molecular Engineering;
Qingdao University of Science and Technology;
Qingdao 266042;
China;
State Key Laboratory of Chemo/Biosensing and Chemometrics;
College of Chemistry and Chemical Engineering;
Hunan University;
Changsha 410082;
China;
Photoelectrochemistry; Immunoassay; Zwitterionic peptide; Photocathode; Anti-interference;