气候变化领域集成服务门户(CCPortal): Stable and selective electrosynthesis of hydrogen peroxide and the electro-Fenton process on CoSe2polymorph catalysts

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DOI	10.1039/d0ee01925a
	Stable and selective electrosynthesis of hydrogen peroxide and the electro-Fenton process on CoSe2polymorph catalysts
	Sheng H.; Janes A.N.; Ross R.D.; Kaiman D.; Huang J.; Song B.; Schmidt J.R.; Jin S.
发表日期	2020
ISSN	17545692
起始页码	4189
结束页码	4203
卷号	13 期号:11
英文摘要	Electrochemical synthesis of hydrogen peroxide (H2O2) in acidic solution can enable the electro-Fenton process for decentralized environmental remediation, but robust and inexpensive electrocatalysts for the selective two-electron oxygen reduction reaction (2e- ORR) are lacking. Here, we present a joint computational/experimental study that shows both structural polymorphs of earth-abundant cobalt diselenide (orthorhombic o-CoSe2 and cubic c-CoSe2) are stable against surface oxidation and catalyst leaching due to the weak O∗ binding to Se sites, are highly active and selective for the 2e- ORR, and deliver higher kinetic current densities for H2O2 production than the state-of-the-art noble metal or single-atom catalysts in acidic solution. o-CoSe2 nanowires directly grown on carbon paper electrodes allow for the steady bulk electrosynthesis of H2O2 in 0.05 M H2SO4 with a practically useful accumulated concentration of 547 ppm, the highest among the reported 2e- ORR catalysts in acidic solution. Such efficient and stable H2O2 electrogeneration further enables the effective electro-Fenton process for model organic pollutant degradation. © The Royal Society of Chemistry.
英文关键词	Binding sites; Cobalt compounds; Electrocatalysts; Electrolytic reduction; Hydrogen peroxide; Organic pollutants; Oxygen reduction reaction; Peroxides; Precious metals; Selenium compounds; Sulfuric acid; Acidic solutions; Electro-Fenton process; Electrochemical synthesis; Electrogeneration; Environmental remediation; Organic pollutant degradation; State of the art; Surface oxidations; Oxidation; catalyst; cobalt; experimental study; hydrogen peroxide; leaching; organic pollutant; oxidation; oxygen; reduction
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/189496
作者单位	Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, United States; Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, 150001, China
推荐引用方式 GB/T 7714	Sheng H.,Janes A.N.,Ross R.D.,et al. Stable and selective electrosynthesis of hydrogen peroxide and the electro-Fenton process on CoSe2polymorph catalysts[J],2020,13(11).
APA	Sheng H..,Janes A.N..,Ross R.D..,Kaiman D..,Huang J..,...&Jin S..(2020).Stable and selective electrosynthesis of hydrogen peroxide and the electro-Fenton process on CoSe2polymorph catalysts.Energy & Environmental Science,13(11).
MLA	Sheng H.,et al."Stable and selective electrosynthesis of hydrogen peroxide and the electro-Fenton process on CoSe2polymorph catalysts".Energy & Environmental Science 13.11(2020).