TY - JOUR
T1 - Silver/silver bromide/polypyrrole nanoparticles obtained by microemulsion photopolymerization in the presence of a cationic surfactant
AU - Ovando-Medina, Víctor M.
AU - Martínez-Gutiérrez, Hugo
AU - Corona-Rivera, Miguel A.
AU - Cervantes-González, Elsa
AU - Flores-Mejía, Jorge
AU - Farías-Cepeda, Lorena
N1 - Funding Information:
V.M.O.M. wants to thank the Consejo Nacional de Ciencia y Tecnología (México) for grant # SEP-80843. Special thanks are given to C. J. Ramos Torres by her help in FTIR analysis and to the Centro de Nanociencias y micro y nanotecnologías-IPN for the facilities in XRD characterization.
PY - 2013/9
Y1 - 2013/9
N2 - Conductive silver/silver bromide/polypyrrole nanoparticles were obtained by photopolymerization in o/w microemulsions of pyrrole monomer in the presence of silver nitrate as electron acceptor and dopant under UV light irradiation. The microemulsions were prepared using cetyltrimethylammonium bromide (CTAB) as cationic surfactant. The particles were analyzed by scanning electron microscopy (SEM), UV/Vis, Fourier transform infrared spectroscopy, cyclic voltammetry, and X-ray diffraction (XRD). It was observed from SEM analysis that spherical particles can be obtained by this procedure with relatively narrow particles sizes distributions and average particle diameters of the silver cores (Dp) between 39 and 46 nm, which decreases as the surfactant concentration is increased. The conductivities of the resulting materials were between 0.12 and 0.40 S/m. Formation of cores of Ag and AgBr were observed from the XRD analysis, which was ascribed to the reduction of Ag+ to Ag0 and to reaction of Ag+ with the counterion of CTAB surfactant, respectively.
AB - Conductive silver/silver bromide/polypyrrole nanoparticles were obtained by photopolymerization in o/w microemulsions of pyrrole monomer in the presence of silver nitrate as electron acceptor and dopant under UV light irradiation. The microemulsions were prepared using cetyltrimethylammonium bromide (CTAB) as cationic surfactant. The particles were analyzed by scanning electron microscopy (SEM), UV/Vis, Fourier transform infrared spectroscopy, cyclic voltammetry, and X-ray diffraction (XRD). It was observed from SEM analysis that spherical particles can be obtained by this procedure with relatively narrow particles sizes distributions and average particle diameters of the silver cores (Dp) between 39 and 46 nm, which decreases as the surfactant concentration is increased. The conductivities of the resulting materials were between 0.12 and 0.40 S/m. Formation of cores of Ag and AgBr were observed from the XRD analysis, which was ascribed to the reduction of Ag+ to Ag0 and to reaction of Ag+ with the counterion of CTAB surfactant, respectively.
KW - Microemulsion
KW - Photopolymerization
KW - Pyrrole
KW - UV irradiation
UR - http://www.scopus.com/inward/record.url?scp=84882456395&partnerID=8YFLogxK
U2 - 10.1007/s00396-013-2945-6
DO - 10.1007/s00396-013-2945-6
M3 - Artículo
SN - 0303-402X
VL - 291
SP - 2131
EP - 2138
JO - Colloid and Polymer Science
JF - Colloid and Polymer Science
IS - 9
ER -