Graphical Double-layer hollow porous carbon microspheres (DPCMs) were synthesized by hydrothermal method using sucrose as carbon source, SnCl 4 ⋅ 5H 2 O as the porogen, sodium dodecyl sulfate as the anionic surfactant, and sodium polyacrylate as dispersant. Double-layer hollow porous carbon microspheres (DPCMs) with high specific surface area (up to 57.3 m 2 /g) were synthesized by a hydrothermal method using sucrose as the carbon source, SnCl4 ⋅ 5H 2 O as the porogen, and sodium dodecyl sulfate and sodium polyacrylate as the anionic surfactant and dispersant, respectively. The thickness and morphology of the inner and outer layers of the DPCMs (spherical, bowl-like, mushroom-like, or ellipsoidal) could be adjusted by changing the hydrothermal conditions. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared analysis (FTIR) showed that the surface of the DPCMs was rich in −OH and −COOH functional groups, which was beneficial for subsequent chemical modification of the DPCMs. Because the prepared DPCM had a reactive surface layer and a stable carbonaceous double-layer structure, the material could be used in supercapacitors and biochemistry, and as catalyst carriers, adsorption materials, and electrode materials, among other applications.
A novel hierarchically mesoporous–macroporous tin organophosphonate with intra-framework organic groups is successfully fabricated through a facile hydrothermal route with SnCl 4 ·5H 2 O as tin source and diethylene triamine pentakis(methylphosphonic acid) as organophosphorus source in the presence of cetyltrimethylammonium bromide (CTAB) as the templating agent. The as-prepared hybrid had macroporous structures with the pore size in the range of 0.6–2.1 μm and a specific surface area of 170 m 2 /g. Besides, the pore walls had particle-aggregated mesoporous substructures, consisting of amorphous tin organophosphonates, as characterized by SEM, TEM and N 2 adsorption analysis and wide- and low-angle X-ray diffraction. FT-IR and NMR results indicated the integrity of the organophosphonate groups into the hybrid solid. It was found that the surfactant CTAB played an important role in obtaining macropores, and a possible formation route was proposed.
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