New Insights from Microcalorimetry on the FeOx/CNT-Based Electrocatalysts Active in the Conversion of CO2 to Fuels

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	New Insights from Microcalorimetry on the FeOx/CNT-Based Electrocatalysts Active in the Conversion of CO2 to Fuels
	R. Arrigo; M. E. Schuster; S. Wrabetz; F. Girgsdies; J. P. Tessonnier; G. Centi; S. Perathoner; D. S. Su; R. Schlogl
	2012
发表期刊	Chemsuschem
ISSN	1864-5631
卷号	5 期号:3 页码:577-586
摘要	Fe oxide nanoparticles show enhanced electrocatalytic performance in the reduction of CO2 to isopropanol when deposited on an N-functionalized carbon nanotube (CNT) support rather than on a pristine or oxidized CNT support. XRD and high-resolution TEM were used to investigate the nanostructure of the electrocatalysts, and CO2 adsorptive microcalorimetry was used to study the chemical nature of the interaction of CO2 with the surface sites. Although the particles always present the same Fe3O4 phase, their structural anisotropy and size inhomogeneity are consequences of the preparation method of the carbon surface. Two types of chemisorption sites have been determined by using microcalorimetry: irreversible sites (280 kJmol-1) at the uncoordinated sites of the facets and reversible sites (120 kJ mol-1) at the hydrated oxide surface of the small nanoparticles. N-Functionalization of the carbon support is advantageous, as it causes the formation of small nanoparticles, which are highly populated by reversible chemisorbing sites. These characteristic features correlate with a higher electrocatalytic performance.
部门归属	[arrigo, rosa; schuster, manfred e.; wrabetz, sabine; girgsdies, frank; tessonnier, jean-philippe; su, dang sheng; schloegl, robert] max planck gesell, fritz haber inst, abt anorgan chem, d-14195 berlin, germany. [centi, gabriele; perathoner, siglinda] univ messina, dept ind chem & mat engn, i-98166 messina, italy. [tessonnier, jean-philippe] univ delaware, dept chem engn, newark, de 19716 usa. [su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;arrigo, r (reprint author), max planck gesell, fritz haber inst, abt anorgan chem, faradayweg 4-6, d-14195 berlin, germany.;arrigo@fhi-berlin.mpg.de; centi@unime.it
关键词	Carbon Dioxide Electrocatalysis Iron Nanotubes Reduction Carbon Nanotubes Iron-oxide Electrochemical Reduction Sustainable Energy Adsorption Nanoparticles Catalysts Surfaces Dioxide Ferrihydrite
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59885
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. Arrigo,M. E. Schuster,S. Wrabetz,et al. New Insights from Microcalorimetry on the FeOx/CNT-Based Electrocatalysts Active in the Conversion of CO2 to Fuels[J]. Chemsuschem,2012,5(3):577-586.
APA	R. Arrigo.,M. E. Schuster.,S. Wrabetz.,F. Girgsdies.,J. P. Tessonnier.,...&R. Schlogl.(2012).New Insights from Microcalorimetry on the FeOx/CNT-Based Electrocatalysts Active in the Conversion of CO2 to Fuels.Chemsuschem,5(3),577-586.
MLA	R. Arrigo,et al."New Insights from Microcalorimetry on the FeOx/CNT-Based Electrocatalysts Active in the Conversion of CO2 to Fuels".Chemsuschem 5.3(2012):577-586.