title: Imprinted propyl gallate electrochemical sensor based on graphene/single walled carbon nanotubes/sol-gel film.
abstract: A novel imprinted sol-gel electrochemical sensor for the determination of propyl gallate (PG) was developed based on a composite of graphene and single walled carbon nanotubes (GR-SWCNTs). It was fabricated by stepwise modifying GR-SWCNTs and molecularly imprinted polymers and stored in 0.10 mol L(-1) phosphate buffer solution pH 6.0, which endowed the sensor good sensitivity and selective recognition towards template molecules. The morphology and specific adsorption capacity of the sensor was characterized by scanning electron microscope and electrochemical methods, respectively. Under the optimized conditions, a linear range of the sensor to PG was 8.0 × 10(-8)-2.6 × 10(-3)mo lL(-1) with a limit of detection of 5.0 × 10(-8)mol L(-1) (S/N=3). The sensor exhibited specificity and selectivity towards template molecules as well as excellent reproducibility, regeneration and stability. Furthermore, the sensor could be applied to determine PG in edible oils, instant noodles and cookies with satisfactory results.
authors: College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, PR China; Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, Anhui Key Laboratory of Functional Molecular Solids, PR China.
authors: Guilin
authors: G
authors: Xu
authors: College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, PR China; Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, Anhui Key Laboratory of Functional Molecular Solids, PR China.
authors: Yu
authors: Y
authors: Chi
authors: College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, PR China; Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, Anhui Key Laboratory of Functional Molecular Solids, PR China.
authors: Lu
authors: L
authors: Li
authors: College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, PR China; Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, Anhui Key Laboratory of Functional Molecular Solids, PR China.
authors: Shouhua
authors: S
authors: Liu
authors: College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, PR China; Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, Anhui Key Laboratory of Functional Molecular Solids, PR China. Electronic address: kanxw@mail.ahnu.edu.cn.
authors: Xianwen
authors: X
authors: Kan
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D055664:Electrochemical Techniques / Q000379:methods*; D059022:Food Safety; D006108:Graphite / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011435:Propyl Gallate / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon; D011108:Polymers; D006108:Graphite; D011435:Propyl Gallate
keywords: Ammonia (PubChem CID: 222); Butylated hydroxyanisole (PubChem CID: 24667); Ethyl gallate (PubChem CID: 13250); Gallic acid (PubChem CID: 370); Graphene; Hydrazine (PubChem CID: 9321); Imprinted sol–gel electrochemical sensor; Methyltrimethoxysilane (PubChem CID: 14456); Phenyltrimethoxysilane (PubChem CID: 18137); Propyl gallate; Propyl gallate (PubChem CID: 4947); Pyrogallic (PubChem CID: 1057); Single walled carbon nanotubes; tert-Butylhydroquinone (PubChem CID: 16043)