Journal
MATERIALS CHEMISTRY FRONTIERS
Volume 1, Issue 10, Pages 2136-2142Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7qm00275k
Keywords
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Funding
- National Natural Science Foundation of China [21674127, 51373197, 21422407]
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Manipulating inversion of Pickering emulsions via green'' and erasable'' external stimuli is at the forefront of developing emulsion-templated materials on account of no chemical addition and convenience. Herein, a type of synergetic CO2- and light-triggered Pickering emulsion was constructed using a special emulsifier formulated by poly[2-(diethylamino)ethyl methacrylate] (PDEAEMA)-grafted-polydopamine (PDA) nanoparticles. Taking advantage of the remarkable photothermal-conversion ability of PDA and tunable amphiphilicity of PDEAEMA, water-in-oil (W/O) emulsions stabilized by PDA-PDEAEMA particles could be converted into oil-in-water (O/W) types upon CO2 treatment, and then switched between the W/O type and O/W type reversibly by turning light irradiation on and off. Such controllable emulsion inversion through synergetic CO2 and light stimuli could be applied in temperature-dependent heterogeneous catalysis and separation.
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