Ultra-sensitive photoelectrochemical aptamer biosensor for detecting E. coli O157:H7 based on nonmetallic plasmonic two-dimensional hydrated defective tungsten oxide nanosheets coupling with nitrogen-doped graphene quantum dots (dWO3•H2O@N-GQDs)

Ding Jiang, Cuiqi Yang, Yadi Fan, Hang-Mei Polly Leung, Kiao Inthavong, Yu Zhang, Zhiyang Li, Mo Yang