title: High-selective and sensitive voltammetric sensor for butylated hydroxyanisole based on AuNPs-PVP-graphene nanocomposites.
abstract: Gold nanoparticles (AuNPs) and reduced graphene oxide (graphene) composites were synthesized via a simple one-pot approach in the presence of polyvinylpyrrolidone (PVP). Further, the Au-PVP-graphene nanocomposite was used as a new sensing material for the electrochemical detection of butylated hydroxyanisole (BHA). Because of the greatly enlarged surface area, the enhanced electron transfer rate, and a stronger enrichment of BHA, the sensor based on Au-PVP-graphene modified glassy carbon electrode (GCE) displayed highly sensitive electrochemical responses to BHA. Applying linear sweep voltammetry, a good linear relationship of the oxidation peak current with respect to concentrations of BHA across the range of 0.2-100.0 µM and a detection limit of 0.04 µM was achieved. The practical analytical performance of the Au-PVP-graphene/GCE was examined by evaluating detection of BHA in soybean oil and the flour samples. Satisfactory results revealed that this work offered a new way for the sensitive and simple determination of BHA in complex samples.
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China; Department of Chemistry, Zhengzhou Normal University, Zhengzhou 450001, PR China.
authors: Ling
authors: L
authors: Wang
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China. Electronic address: yangran@zzu.edu.cn.
authors: Ran
authors: R
authors: Yang
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
authors: Huan
authors: H
authors: Wang
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
authors: Jianjun
authors: J
authors: Li
authors: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China; School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China. Electronic address: qulingbo@zzu.edu.cn.
authors: Lingbo
authors: L
authors: Qu
authors: Center for Intelligent Chemical Instrumentation, Department of Chemistry and Biochemistry, OHIO University, Athens, OH 45701-2979, USA.
authors: Peter de B
authors: PB
authors: Harrington
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D002083:Butylated Hydroxyanisole / Q000032:analysis*; D055664:Electrochemical Techniques / Q000379:methods; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D057230:Limit of Detection; D053768:Metal Nanoparticles; D053761:Nanocomposites / Q000737:chemistry*; D010084:Oxidation-Reduction; D011205:Povidone / Q000737:chemistry*; D012680:Sensitivity and Specificity
chemical_list: D002083:Butylated Hydroxyanisole; D006046:Gold; D006108:Graphite; D011205:Povidone
keywords: Au–PVP–graphene nanocomposites; Butylated hydroxyanisole (BHA); Electrochemical sensor; High-sensitivity