Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 35, Pages 11306-11311Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b06558
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- Ministry of Education of Singapore [M4011154.120, RG12/13]
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Mesoporous colloidal particles with tailored asymmetric morphologies and radially oriented large channels are of great importance for development of new carriers for nanoencapsulation, high-performance mass transport nanosystems, and complex assembly structures. However, controllable anisotropic growth to asymmetric mesoporous particles is very challenging via the universal surfactant-directed soft-templating, method. Herein we report a simple emulsion-induced interface anisotropic assembly approach to synthesize bowl-like mesoporous polydopamine particles with diameter of similar to 210 nm, well-controlled radially oriented mesochannels, and large pore size of similar to 11 nm. This interface-driven approach also creates opportunities for tailoring the assembly and formation of various asymmetric and symmetric polydopamine particles. Bowl-like mesoporous carbon particles with radially oriented channels, high accessible surface area of 619 m(2) g(-1),and large pore size of similar to 8 nm can be fabricated by subsequent hydrothermal treatment and calcination under nitrogen atmosphere. Lastly, we demonstrate that the as-derived bowl-like mesoporous carbon particles manifest enhanced electrocatalytic performance for oxygen reduction reaction in alkaline electrolyte.
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