Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 274, Issue -, Pages 228-234Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.07.153
Keywords
Photoelectrochemical platform; Multifunction; Pathogenic bacteria; Photocatalysis; Antibacterial
Funding
- Natured Science Foundation of China [41476068, 41776090]
- National Key Research and Development Program of China [2016YFC1400605]
- National Key Basic Research Program of China [2014CB643304]
- Science & Technology Basic Research Program of Qingdao [16-5-1-19-jch]
- Qingdao National Laboratory for Marine Science and Technology
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New approach for the fabrication of the photoelectrochemical (PEC) platform has been firstly demonstrated for simultaneous capture, detection, and inactivation of pathogenic bacteria. The BiOI semiconductor film is selected as photo-electricity conversion unit and visible light driven (VLD) photocatalytic antibacterial unit, gold nanoparticles (AuNPs) are used as link unit and 4-mercaptophenylboronic acid (4-MPBA) is chosen as antibiotic-free capture unit. Based on the reversibly binds between boronic acid group and peptidoglycan of the bacteria cell wall, the integrated PEC platform presents excellent capture performance and high detection sensitivity to Escherichia coli (E. coli) with a low detection limit of 46 cfu/mL. Moreover, this multifunctional platform shows high antibacterial activity (99.99%) arising from the VLD photocatalytic effect of AuNPs/BiOI. The current work can provide new strategies to construct advanced green PEC platforms for detection of various pathogenic bacteria.
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