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Efficient capture, rapid killing and ultrasensitive detection of bacteria by a nano-decorated multi-functional electrode sensor

Wu, Runrun (författare)
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Ma, Yue (författare)
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Pan, Jianming (författare)
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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Lee, Shih-Hui (författare)
Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA
Liu, Jinxin (författare)
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Zhu, Hengjia (författare)
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Gu, Runxin (författare)
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Shea, Kenneth J. (författare)
Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA
Pan, Guoqing (författare)
Malmö universitet,Institutionen för biomedicinsk vetenskap (BMV),School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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 (creator_code:org_t)
Elsevier, 2018
2018
Engelska.
Ingår i: Biosensors & bioelectronics. - : Elsevier. - 0956-5663 .- 1873-4235. ; 101, s. 52-59
Relaterad länk:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • In this work, we demonstrated a nano-decorated porous impedance electrode sensor for efficient capture, rapid killing and ultrasensitive detection of bacteria. The multi-functional sensor was prepared by a facile sono-chemical method via in situ deposition of antibacterial prickly Zn-CuO nanoparticles and graphene oxide (GO) nanosheets on a Ni porous electrode. Due to the surface burr-like nanostructures, the nano-decorated impedance sensor exhibited very good bacterial-capture efficiency (70 - 80% in 20 min) even at a low concentration of 50 CFU mL(-1), rapid antibacterial rate (100% killing in 30 min) and high detection sensitivity (as low as 10 CFU mL(-1)). More importantly, the nano-decorated sensor has proven to be highly effective in quantitative detection of bacteria in a biological sample, for example, a rat blood sample spiked with E. coll. Despite the complexity of blood, the sensor still exhibited excellent detection precision within 30 min at bacteria concentrations ranging from 10 - 10(5) CFU mL(-1). The simplicity, rapidity, sensitivity, practicability and multifunctionality of this impedance sensor would greatly facilitate applications in portable medical devices for on-the-spot diagnosis and even the possibility for simultaneous therapy of diseases caused by bacterial infections.

Nyckelord

Bacterial capture
Bacteria detection
Impedance sensor
Antibacterial nanoparticles
Prickly nanostructure

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