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We first reported a facile method to prepare porous graphene with tunable structure for glucose oxidase (GOD) immobilization based on freeze-drying. The produced porous graphene (PGR) exhibited three-dimensional interconnected porous structure. Moreover, their microstructure was easily tuned by addition of surfactant and oil droplets into the graphene oxide dispersion. Field emission scanning electron...
Three dimensional (3D) porous graphene–MnO 2 (PGR–MnO 2 ) composites as electrode materials for supercapacitors were fabricated via deposition of MnO 2 particles on 3D PGR produced from freeze–drying method. Field emission scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy were used to characterize morphologies and composition of the produced...
In this paper, we report a new method to fabricate luminescent and macroporous Eu3+ doped Y2O3 (Y2O3:Eu3+)-coated silica monoliths. Macroporous silica monoliths were firstly prepared through freeze drying emulsions containing silica nanoparticles (silica NPs) and calcination. Then Y2O3:Eu3+ layers were loaded onto the macroporous silica monoliths by the wet impregnation method. The Y2O3:Eu3+-coated...
Horseradish peroxidase (HRP)/H 2 O 2 -triggered polymerization of aniline in sodium bis-(2-ethylhexyl)sulfosuccinate (AOT) micellar solution is first presented. Results show that the critical micelle concentration of AOT in the polymerization system is very low and AOT has small effect on the activity of HRP, so it matches with HRP well for the end. As a template, the AOT micellar...
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