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Download fileTemplate-Oriented Synthesis of Nitrogen-Enriched Porous Carbon Nanowhisker by Hollow TiO2 Spheres Nanothorns for Methanol Electrooxidation
journal contribution
posted on 2018-06-01, 00:00 authored by Jun Zhang, Xiaoyan Liu, An Xing, Juan LiuBoosting
the electrocatalytic property of catalyst by controlling the structure
and composition is extremely important for fuel cells commercialization.
We present herein a facile template-oriented strategy to controllably
fabricate one-dimensional (1D) nitrogen-enriched hierarchical porous
carbon nanowhisker (N-HPCN-T, T = 700, 800, and 900) through an efficient
hollow TiO2 (H-TiO2) spheres nanothorns (H-TiO2/N-HPCN-T). This strategy not only effectively provides an
interconnected 3D porous architecture (hollow micro/dual-meso-porous
and 1D nanowhisker) but also significantly improves the specific surface
area and electrical conductivity of TiO2 materials. The
growth mechanism of polyaniline nanowhisker and the effect of experimental
parameters have been systematically studied, and then a “template-oriented
mechanism” for the nanowhisker growth is proposed. Pt nanoparticles
are deposited on H-TiO2/N-HPCN-T supports using a microwave-assisted
polyol process (Pt/H-TiO2@N-HPCN-T). Because of their unique
structural features and superior composition advantages, the resulting
Pt/H-TiO2@N-HPCN-800 electrocatalyst exhibits desirable
electrocatalytic performance toward methanol electrooxidation, including
high catalytic activity, outstanding stability and superior poison
tolerance. Our findings open up new possibility to design advanced
1D hierarchical carbon support, which is conducive to solve the current
bottlenecks of fuel cell technologies.
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Keywords
surface areacarbon nanowhiskerspheres nanothornsN-HPCN -800 electrocatalyst exhibitsH-TiO 2poison tolerancefuel cells commercializationfuel cell technologiespolyaniline nanowhiskergrowth mechanismTemplate-Oriented Synthesisnanowhisker growthPt nanoparticlesHollow TiO 2 Spheres Nanothorns1 Dcomposition advantages3 Dcarbon supportN-HPCN-Tmicrowave-assisted polyol processNitrogen-Enriched Porous Carbon Nanowhiskerelectrocatalytic performanceTiO 2template-oriented strategyMethanol Electrooxidation Boostingmethanol electrooxidationelectrocatalytic propertyTiO 2 materials1 D nanowhisker