气候变化领域集成服务门户(CCPortal): Pd@TiO2/carbon nanohorn electrocatalysts: Reversible CO2 hydrogenation to formic acid

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DOI	10.1039/c7ee03361c
	Pd@TiO2/carbon nanohorn electrocatalysts: Reversible CO2 hydrogenation to formic acid
	Melchionna M.; Bracamonte M.V.; Giuliani A.; Nasi L.; Montini T.; Tavagnacco C.; Bonchio M.; Fornasiero P.; Prato M.
发表日期	2018
ISSN	17545692
起始页码	1571
结束页码	1580
卷号	11 期号:6
英文摘要	Direct conversion of carbon dioxide to formic acid at thermodynamic equilibrium is an advantage of enzymatic catalysis, hardly replicated by synthetic analogs, but of high priority for carbon-neutral energy schemes. The bio-mimetic potential of totally inorganic Pd@TiO2 nanoparticles is envisioned herein in combination with Single Walled Carbon NanoHorns (SWCNHs). The high surface nano-carbon entanglement templates a wide distribution of "hard-soft" bimetallic sites where the small Pd nanoparticles (1.5 nm) are shielded within the TiO2 phase (Pd@TiO2), while being electrically wired to the electrode by the nanocarbon support. This hybrid electrocatalyst activates CO2 reduction to formic acid at near zero overpotential in the aqueous phase (onset potential at E < -0.05 V vs. RHE, pH = 7.4), while being able to evolve hydrogen via sequential formic acid dehydrogenation. The net result hints at a unique CO2 "circular catalysis" where formic acid versus H2 selectivity is addressable by flow-reactor technology. © 2018 The Royal Society of Chemistry.
英文关键词	Carbon dioxide; Catalysis; Electrocatalysts; Formic acid; Nanohorns; Nanoparticles; Titanium dioxide; CO2 hydrogenation; Direct conversion; Enzymatic catalysis; PD nano particle; Single walled carbon nanohorns; Synthetic analogs; Thermodynamic equilibria; TiO2 nano-particles; Palladium compounds; carbon dioxide; catalyst; chemical reaction; electrochemistry; electrode; enzyme activity; formic acid; hydrogen; oxide; palladium
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190218
作者单位	Department of Chemical and Pharmaceutical Sciences, INSTM, University of Trieste, Via L. Giorgieri 1, Trieste, 34127, Italy; CNR-IMEM Institute, Parco area delle Scienze 37/A, Parma, 43124, Italy; ICCOM-CNR, University of Trieste, Via L. Giorgieri 1, Trieste, 34127, Italy; ITM-CNR and Department of Chemical Sciences, University of Padova, Via F. Marzolo 1, Padova, 35131, Italy; Carbon Nanobiotechnology Laboratory, CIC BiomaGUNE, Paseo de Miramón 182, Donostia-San Sebastian, 20009, Spain; Basque Fdn Sci, Ikerbasque, Bilbao, 48013, Spain
推荐引用方式 GB/T 7714	Melchionna M.,Bracamonte M.V.,Giuliani A.,et al. Pd@TiO2/carbon nanohorn electrocatalysts: Reversible CO2 hydrogenation to formic acid[J],2018,11(6).
APA	Melchionna M..,Bracamonte M.V..,Giuliani A..,Nasi L..,Montini T..,...&Prato M..(2018).Pd@TiO2/carbon nanohorn electrocatalysts: Reversible CO2 hydrogenation to formic acid.Energy & Environmental Science,11(6).
MLA	Melchionna M.,et al."Pd@TiO2/carbon nanohorn electrocatalysts: Reversible CO2 hydrogenation to formic acid".Energy & Environmental Science 11.6(2018).