High-performance SERS detection of pesticides using BiOCl-BiOBr@Pt/Au hybrid nanostructures on styrofoams as 3D function
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ORIGINAL PAPER
High-performance SERS detection of pesticides using BiOCl-BiOBr@Pt/Au hybrid nanostructures on styrofoams as 3D functional substrate Ramachandran Balaji 1 & Renganathan Vengudusamy 1 & Shen-Ming Chen 1 & Tse-Wei Chen 1,2 & Xiaoheng Liu 3 & Mohammad Rizwan Khan 4 & Zeid A. ALOthman 4 & Mohammad Ajmal Ali 5 & Saikh Mohammad Wabaidur 4 Received: 1 June 2020 / Accepted: 13 September 2020 # Springer-Verlag GmbH Austria, part of Springer Nature 2020
Abstract A 3D flexible domestic waste styrofoam is reported as a surface enhanced Raman scattering (SERS) substrate loaded with BiOCl-BiOBr@Pt/Au semiconductor-plasmonic composites. The hydrothermally prepared BiOCl-BiOBr nanocomposite is thoroughly characterized for its crystal structure using X-Ray diffraction, morphology through scanning electron microscopy, and electronic states of the elements using X-ray photoelectron spectroscopy. The alpha cypermethrin (ACM) is chosen as a model pesticide analyte for SERS investigation. The BiOCl-BiOBr@Pt/Au loaded foam substrate exhibited a high enhancement factor (106) and low limit of detection (10−10 M) upon SERS investigation. The unique architecture of the semiconductorplasmonic composite enables an efficient charge transfer capability and plasmonic hotspots which aids in the enhancement of target analytes. In order to better demonstrate the versatility towards other pesticides, SERS detection of glyphosate and paraquat pesticides are also performed using the fabricated SERS substrate. The stability of the substrate has been investigated in detail for 30 days and the substrate was highly stable. The BiOCl-BiOBr@Pt/Au-based foam substrate also performed well in rapid realtime sensing of alpha cypermethrin on the kiwi fruit exocarp at lower level concentrations. Keywords Semiconductor-plasmonic composites . Styrofoam . SERS . Alpha cypermethrin . Real time sensing
Introduction The pesticides are broadly classified into fungicides, herbicides, and insecticides which are diversely consumed in the agricultural sector for eradicating the threat of the pests impairing the cultivational lands and farm animals [1]. Having applied the controlling substance (pesticides) directly
onto the cultivational lands and plants, only a negligible percentage gets transported to the desired target. The inadvertent exposure of the pesticides caused by the solid and liquid waste dumps, spillage, and leaking pipes can conveniently correspond to their dominant existence in the surrounding environment over an extended period of time [2]. As a consequence, this practice of the pesticides has become a pollution and
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00604-020-04558-3) contains supplementary material, which is available to authorized users. * Shen-Ming Chen [email protected] * Xiaoheng Liu [email protected] 1
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Republic of China
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Research and Developmen
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