Colloids and Surfaces A 538 (2018) 202–209 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa Laccase biosensor fabricated on ﬂower–shaped yolk–shell SiO nanospheres for catechol detection Yujie Zheng, Dandan Wang, Zhikai Li, Xuefeng Sun, Tingting Gao, Guowei Zhou Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, P.R. China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: In this study, we developed a facile one–pot strategy for fabricating ﬂower–shaped yolk–shell SiO nanospheres Yolk–shell nanospheres (FYSSns) using cetyltrimethylammonium bromide–polyvinylpyrrolidone–cyclohexane–ethanol–water vesicle–- Flower–shaped core microemulsion composite aggregation as templates through a simple solvothermal route. FYSSns displayed Radial mesochannels yolk–shell structures with ﬂower-shaped yolks (260–320 nm) with ordered radial mesochannels (∼7 nm), large Vesicle/microemulsion cavities (100–120 nm), and thin silica shells (20–30 nm). High laccase immobilization amounts were achieved Laccase using FYSSns as supporter, and the laccase–modiﬁed FYSSns were applied to the electrochemical sensor with Biosensor high selectivity for detecting catechol. Under the optimized conditions, the proposed sensor showed a wide linear range from 12.5–450 μM over catechol concentration and a low detection limit of 1.6 μM. The outstanding performance was attributed to the advantages of
Geoderma – Elsevier
Published: Feb 15, 2019
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