title: CTAB micelles assisted rGO-AgNP hybrids for SERS detection of polycyclic aromatic hydrocarbons.
abstract: A structure of hexadecyl trimethyl ammonium bromide (CTAB) micelle-assisted reduced graphene oxide-Ag nanoparticle (rGO-AgNP) hybrids is designed and fabricated for SERS detection of nonpolar polycyclic aromatic hydrocarbons (PAHs), in which CTAB micelles act as the host material to capture PAH molecules. This method provides stable aqueous suspensions of functionalized graphene with an alkyl chain, since the rGO-AgNP hybrids do not need to be pre-modified by CTAB. The result shows that the CTAB-assisted rGO-AgNP substrate has excellent SERS performance toward PAHs and ideal stability under continuous laser radiation. With further optimization, the detection limits of pyrene and perylene were 10(-6) M and 10(-7) M, respectively. Two different PAH molecules could be detected simultaneously by their characteristic peaks.
authors.affiliation: Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China. yccheng@nimte.ac.cn.
authors.forename: Meng
authors.initials: M
authors.lastname: Jiang
authors.forename: Zhijiang
authors.initials: Z
authors.lastname: Qian
authors.forename: Xufeng
authors.initials: X
authors.lastname: Zhou
authors.forename: Xing
authors.initials: X
authors.lastname: Xin
authors.forename: Jinghua
authors.initials: J
authors.lastname: Wu
authors.forename: Chao
authors.initials: C
authors.lastname: Chen
authors.forename: Gongjun
authors.initials: G
authors.lastname: Zhang
authors.forename: Gaojie
authors.initials: G
authors.lastname: Xu
authors.forename: Yuchuan
authors.initials: Y
authors.lastname: Cheng
mesh_terms: D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008823:Micelles; D010087:Oxides / Q000737:chemistry; D010569:Perylene / Q000032:analysis; D056951:Photoelectron Spectroscopy; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D011721:Pyrenes / Q000032:analysis; D012834:Silver / Q000737:chemistry; D013059:Spectrum Analysis, Raman
chemical_list: D002593:Cetrimonium Compounds; D008823:Micelles; D010087:Oxides; D011084:Polycyclic Aromatic Hydrocarbons; D011721:Pyrenes; D012834:Silver; D010569:Perylene; D006108:Graphite; C030984:pyrene; D000077286:Cetrimonium