A biocatalytic route for the synthesis of a water soluble and conducting complex of polyaniline(PANI)/sodium dodecylsulfate(SDS)is presented.Hemoglobin is used in SDS anion surfactant.The polymerization proceeded quic...A biocatalytic route for the synthesis of a water soluble and conducting complex of polyaniline(PANI)/sodium dodecylsulfate(SDS)is presented.Hemoglobin is used in SDS anion surfactant.The polymerization proceeded quickly to result in a homogeneous emeraldine-colored dispersion of PANI.Absorption spectra of PANI/SDS in the aqueous dispersions at various pH values confirms that the reversibility of dedoping and redoping process of PANI/SDS and shows that the transition from emeraldine salt to emeraldine base form occurred at about pH 10.0–11.0 in this anionic micellar system.PANI/SDS in the organic solutions dedoped initially and redoped after 24 h.展开更多
We synthesized hierarchical Polystyrene/Polyaniline@Au(PS/PANI@Au) catalysts through a seeded swelling polymerization and in-situ reduction procedure. PS/PANI@Au catalysts possess a core of PS as seed and template, a ...We synthesized hierarchical Polystyrene/Polyaniline@Au(PS/PANI@Au) catalysts through a seeded swelling polymerization and in-situ reduction procedure. PS/PANI@Au catalysts possess a core of PS as seed and template, a PANI shell with fibers and uniform gold nanoparticles on the surface. The configuration changes of the PANI chains resulting from the doping/ dedoping procedure led to various loading amounts of Au nanoparticles. Reduction of 4-nitrophenol was chosen as the probe reaction to evaluate the catalytic activity of supported Au nanocatalysts. The catalytic results indicated that dedoping treatment of the PS/PANI supports provides stronger coordinative ability to metal nanoparticles as well as more –N= groups, which results in a better catalytic performance towards the reduction of 4-nitrophenol.展开更多
基金Supported by the National Natural Science Foundation of China(30370366)the Research Fund for the Doctoral Program of Higher Education
文摘A biocatalytic route for the synthesis of a water soluble and conducting complex of polyaniline(PANI)/sodium dodecylsulfate(SDS)is presented.Hemoglobin is used in SDS anion surfactant.The polymerization proceeded quickly to result in a homogeneous emeraldine-colored dispersion of PANI.Absorption spectra of PANI/SDS in the aqueous dispersions at various pH values confirms that the reversibility of dedoping and redoping process of PANI/SDS and shows that the transition from emeraldine salt to emeraldine base form occurred at about pH 10.0–11.0 in this anionic micellar system.PANI/SDS in the organic solutions dedoped initially and redoped after 24 h.
基金financially supported by the National Natural Science Foundation of China(51272028)PetroChina Innovation Foundation(2012D-5006-0504)
文摘We synthesized hierarchical Polystyrene/Polyaniline@Au(PS/PANI@Au) catalysts through a seeded swelling polymerization and in-situ reduction procedure. PS/PANI@Au catalysts possess a core of PS as seed and template, a PANI shell with fibers and uniform gold nanoparticles on the surface. The configuration changes of the PANI chains resulting from the doping/ dedoping procedure led to various loading amounts of Au nanoparticles. Reduction of 4-nitrophenol was chosen as the probe reaction to evaluate the catalytic activity of supported Au nanocatalysts. The catalytic results indicated that dedoping treatment of the PS/PANI supports provides stronger coordinative ability to metal nanoparticles as well as more –N= groups, which results in a better catalytic performance towards the reduction of 4-nitrophenol.
