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Here we report a new strategy for fabrication of macro/mesoporous carbon monolith from commercially available and low-cost melamine sponge. This synthesis route involves the cooperative self-assembly and coating of block copolymer mixed with resol on the melamine sponge, followed by pyrolysis at different temperatures. The as-fabricated carbon monolith exhibits high porosity and excellent hydrophobicity,...
Here we report a new strategy for preparation of water-soluble photoluminescent carbon quantum dots (CQDs) from petroleum coke. Petroleum coke was oxidized first in mixed concentrated H2SO4 and HNO3, and then functionalized by hydrothermal ammonia treatment. The as-made CQDs and nitrogen-doped CQDs (N-CQDs) were characterized by UV–Vis absorption spectroscope, fluorescence spectroscope, transmission...
Two-beam-laser interference was used for the simultaneous reduction, patterning and nanostructuring of graphene oxide on flexible polyethylene terephthalate substrates for the production of a high performance humidity sensing device. Hierarchical graphene nanostructures were formed after laser interference treatment of graphene oxide, which holds great promise for gaseous molecular adsorption, and...
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