Published December 2019 | Version v1
Journal article Metadata-only

A composite prepared from BiOBr and gold nanoparticles with electron sink and hot-electron donor properties for photoelectrochemical aptasensing of tetracycline

Creators

  • 1. Jiangsu University, School of Chemistry and Chemical Engineering, Institute for Energy Research, Key Laboratory of Zhenjiang (China)
  • 2. Suzhou University of Science and Technology, Jiangsu Key Laboratory for Environment Functional Materials, Jiangsu Key Laboratory of Intelligent Building Energy Efficiency (China)

Description

A photoelectrochemical (PEC) aptasensor is described for detecting tetracycline (TC). A gold nanoparticles/BiOBr (AuNPs/BiOBr) composite was prepared where the AuNPs play a key function in carrier transfer which is ascribed to the wavelength-dependent dual function as an electron sink and as a hot-electron donor. Due to this dual function, the composite exhibits a wide photo-response and high electron transfer efficiency. This results in enormously enhanced PEC response. The TC-aptamer was immobilized on an ITO modified with AuNPs/BiOBr via Au-S covalent bonding. The resulting PEC aptasensor possesses a wide linear range (1–104 ng L−1) and a low detection limit (0.35 ng L−1; at S/N = 3).

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Additional details

Identifiers

DOI
10.1007/s00604-019-3954-z;

Publishing Information

Journal Title
Mikrochimica Acta
Journal Volume
186
Journal Issue
12
Journal Page Range
p. 1-8
ISSN
0026-3672
CODEN
MIACAQ

INIS

Country of Publication
Austria
Country of Input or Organization
Austria
INIS RN
52083661
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BISMUTH BROMIDES; BISMUTH OXIDES; ELECTROCHEMISTRY; GOLD; NANOCHEMISTRY; NANOCOMPOSITES; NANOPARTICLES; OLIGONUCLEOTIDES; PHOTOCURRENTS; TETRACYCLINES; TIN OXIDES
Descriptors DEC
ANTIBIOTICS; ANTI-INFECTIVE AGENTS; BISMUTH COMPOUNDS; BISMUTH HALIDES; BROMIDES; BROMINE COMPOUNDS; CHALCOGENIDES; CHEMISTRY; CURRENTS; DNA; DRUGS; ELECTRIC CURRENTS; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; MATERIALS; METALS; NANOMATERIALS; NUCLEIC ACIDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PARTICLES; TIN COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2019 Springer-Verlag GmbH Austria, part of Springer Nature