PMID- 28942347 OWN - NLM STAT- MEDLINE DCOM- 20180625 LR - 20191210 IS - 1873-4235 (Electronic) IS - 0956-5663 (Linking) VI - 100 DP - 2018 Feb 15 TI - A novel molecularly imprinted electrochemical sensor based on graphene quantum dots coated on hollow nickel nanospheres with high sensitivity and selectivity for the rapid determination of bisphenol S. PG - 341-347 LID - S0956-5663(17)30622-X [pii] LID - 10.1016/j.bios.2017.09.016 [doi] AB - In this paper, a novel molecularly imprinted electrochemical sensor (MIECS) based on a glassy carbon electrode (GCE) modified with graphene quantum dots (GQDs) coated on hollow nickel nanospheres (hNiNS) for the rapid determination of bisphenol S (BPS) was proposed for the first time. HNiNS and GQDs as electrode modifications were used to enlarge the active area and electron-transport ability for amplifying the sensor signal, while molecularly imprinted polymer (MIP) film was electropolymerized by using pyrrole as monomer and BPS as template to detect BPS via cyclic voltammetry (CV). Scanning electron microscope (SEM), energy-dispersive spectrometry (EDS), CV and differential pulse voltammetry (DPV) were employed to characterize the fabricated sensor. Experimental conditions, such as molar ratio of monomer to template, electropolymerization cycles, pH, incubation time and elution time were optimized. The DPV response of the MIECS to BPS was obtained in the linear range from 0.1 to 50muM with a low limit of detection (LOD) of 0.03muM (S/N = 3) under the optimized conditions. The MIECS exhibited excellent response towards BPS with high sensitivity, selectivity, good reproducibility, and stability. In addition, the proposed MIECS was also successfully applied for the determination of BPS in the plastic samples with simple sample pretreatment. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Rao, Hanbing AU - Rao H AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Zhao, Xun AU - Zhao X AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Liu, Xin AU - Liu X AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Zhong, Ji AU - Zhong J AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Zhang, Zhaoyi AU - Zhang Z AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Zou, Ping AU - Zou P AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Jiang, Yuanyuan AU - Jiang Y AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Wang, Xianxiang AU - Wang X AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. FAU - Wang, Yanying AU - Wang Y AD - College of Science, Sichuan Agricultural University, Ya'an 625014, China. Electronic address: wangyy@sicau.edu.cn. LA - eng PT - Evaluation Study PT - Journal Article DEP - 20170915 PL - England TA - Biosens Bioelectron JT - Biosensors & bioelectronics JID - 9001289 RN - 0 (Phenols) RN - 0 (Plastics) RN - 0 (Sulfones) RN - 0 (Water Pollutants, Chemical) RN - 7782-42-5 (Graphite) RN - 7OV03QG267 (Nickel) RN - 80-09-1 (bis(4-hydroxyphenyl)sulfone) SB - IM MH - Biosensing Techniques/economics/methods MH - Electrochemical Techniques/economics/*methods MH - Graphite/chemistry MH - Limit of Detection MH - Molecular Imprinting/economics/*methods MH - Nanospheres/*chemistry/ultrastructure MH - Nickel/*chemistry MH - Phenols/*analysis MH - Plastics/chemistry MH - Quantum Dots/*chemistry/ultrastructure MH - Sulfones/*analysis MH - Time Factors MH - Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Bisphenol S OT - Electrochemical determination OT - Electrochemical sensor OT - Graphene quantum dots OT - Hollow nickel nanospheres OT - Molecularly imprinted polymers EDAT- 2017/09/25 06:00 MHDA- 2018/06/26 06:00 CRDT- 2017/09/25 06:00 PHST- 2017/07/17 00:00 [received] PHST- 2017/09/02 00:00 [revised] PHST- 2017/09/12 00:00 [accepted] PHST- 2017/09/25 06:00 [pubmed] PHST- 2018/06/26 06:00 [medline] PHST- 2017/09/25 06:00 [entrez] AID - S0956-5663(17)30622-X [pii] AID - 10.1016/j.bios.2017.09.016 [doi] PST - ppublish SO - Biosens Bioelectron. 2018 Feb 15;100:341-347. doi: 10.1016/j.bios.2017.09.016. Epub 2017 Sep 15.