title: One-step synthesis of large-scale graphene film doped with gold nanoparticles at liquid-air interface for electrochemistry and Raman detection applications.
abstract: We demonstrated a facile one-step synthesis strategy for the preparation of a large-scale reduced graphene oxide multilayered film doped with gold nanoparticles (RGO/AuNP film) and applied this film as functional nanomaterials for electrochemistry and Raman detection applications. The related applications of the fabricated RGO/AuNP film in electrochemical nonenzymatic H2O2 biosensor, electrochemical oxygen reduction reaction (ORR), and surface-enhanced Raman scattering (SERS) detection were investigated. Electrochemical data indicate that the H2O2 biosensor fabricated by RGO/AuNP film shows a wide linear range, low limitation of detection, high selectivity, and long-term stability. In addition, it was proved that the created RGO/AuNP film also exhibits excellent ORR electrochemical catalysis performance. The created RGO/AuNP film, when serving as SERS biodetection platform, presents outstanding performances in detecting 4-aminothiophenol with an enhancement factor of approximately 5.6 × 10(5) as well as 2-thiouracil sensing with a low concentration to 1 μM. It is expected that this facile strategy for fabricating large-scale graphene film doped with metallic nanoparticles will spark inspirations in preparing functional nanomaterials and further extend their applications in drug delivery, wastewater purification, and bioenergy.
authors.affiliation: Beijing Key Laboratory on Preparation and Processing of Novel Polymeric Materials, Beijing University of Chemical Technology , 100029, Beijing, China.
authors.forename: Panpan
authors.initials: P
authors.lastname: Zhang
authors.forename: Ying
authors.initials: Y
authors.lastname: Huang
authors.forename: Xin
authors.initials: X
authors.lastname: Lu
authors.forename: Siyu
authors.initials: S
authors.lastname: Zhang
authors.forename: Jingfeng
authors.initials: J
authors.lastname: Li
authors.forename: Gang
authors.initials: G
authors.lastname: Wei
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Su
mesh_terms: D000814:Aniline Compounds / Q000032:analysis; D015374:Biosensing Techniques; D055664:Electrochemical Techniques; D006046:Gold / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000032:analysis; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013438:Sulfhydryl Compounds / Q000032:analysis; D013889:Thiouracil / Q000032:analysis
chemical_list: D000814:Aniline Compounds; D013438:Sulfhydryl Compounds; D013889:Thiouracil; D006046:Gold; D006108:Graphite; C064316:4-aminothiophenol; D006861:Hydrogen Peroxide; D010100:Oxygen