期刊
JOURNAL OF MATERIALS SCIENCE
卷 55, 期 5, 页码 1946-1958出版社
SPRINGER
DOI: 10.1007/s10853-019-04066-7
关键词
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资金
- National Natural Science Foundation of China [81502297, 51573126, 81402407, 81871487, 31971388]
- Natural Science Foundation of Shanxi Province [2013021011-5]
- Tianjin Research Program of Application Foundation and Advanced Technology [15JCQNJC14600, 16JCYBJC26300]
Polystyrene with pi-conjugated end groups (BPS) synthesized by reversible addition-fragmentation transfer polymerization was used to modify the surface of reduced graphene oxide (rGO) sheets through pi-pi stacking (BPS-rGO) in order to increase their hydrophobicity and dispersibility. The modification of rGO makes it possible for BPS-rGO to stabilize Pickering w/o (water-in-oil) emulsions of small droplets, in which toluene is taken as the continuous phase and distilled water as the dispersed phase. The effects of the BPS-rGO concentration and the water/oil ratio on the Pickering emulsions were investigated. The results indicate that increasing hydrophobicity of BPS-rGO was favorable to forming stable w/o emulsions and the emulsion stability was increased with the increase in the BPS-rGO concentration or with the decrease in water/oil ratio. Using BPS-rGO to stabilize Pickering w/o emulsions is an effective and versatile approach to fabricate active materials that can be employed as catalysts for chemical reactions.
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