Bioinspired Synthesis of Melaninlike Nanoparticles for Highly N-Doped Carbons Utilized as Enhanced CO2 Adsorbents and Efficient Oxygen Reduction Catalysts

Title
Bioinspired Synthesis of Melaninlike Nanoparticles for Highly N-Doped Carbons Utilized as Enhanced CO2 Adsorbents and Efficient Oxygen Reduction Catalysts
Author
유원철
Keywords
Bioinspired synthesis; Biomass; CO2 adsorption; N-doped carbon; Oxygen reduction reaction
Issue Date
2018-02
Publisher
AMER CHEMICAL SOC
Citation
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v. 6, No. 2, Page. 2324-2333
Abstract
Highly N-doped nanoporous carbons have been of great interest as a high uptake CO2 adsorbent and as an efficient metal-free oxygen reduction reaction (ORR) catalyst. Therefore, it is essential to produce porosity-tunable and highly N-doped carbons through cost-effective means. Herein, we introduce the bioinspired synthesis of a monodisperse and N-enriched melaninlike polymer (MP) resembling the sepia biopolymer (SP) from oceanic cuttlefish. These polymers were subsequently utilized for highly N-doped synthetic carbon (MC) and biomass carbon (SC) spheres. An adequate CO2 activation process fine-tunes the ultramicroporosity (˂1 nm) of N-doped MC and SC spheres, those with maximum ultramicroporosities of which show remarkable CO2 adsorption capacities. In addition, N-doped MC and SC with ultrahigh surface areas of 2677 and 2506 m(2)/g, respectively, showed excellent ORR activities with a favored four electron reduction pathway, long-term durability, and better methanol tolerance, comparable to a commercial Pt-based catalyst.
URI
https://pubs.acs.org/doi/10.1021/acssuschemeng.7b03680http://repository.hanyang.ac.kr/handle/20.500.11754/105369
ISSN
2168-0485
DOI
10.1021/acssuschemeng.7b03680
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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