Carbon nanodot-modified FeOCI for photo -assisted Fenton reaction featuring synergistic in-situ H2O2 production and activation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 水污染控制实验室

	Carbon nanodot-modified FeOCI for photo -assisted Fenton reaction featuring synergistic in-situ H2O2 production and activation
	Zhang, Jun; Zhang, Gong; Ji, Qinghua; Lan, Huachun; Qu, Jiuhui; Liu, Huijuan
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2020-06-05
卷号	266 页码:1-9
关键词	FeOCl/CDots In-situ H2O2 Generation and activation Photocatalytic Fenton p-Chlorophenol
ISSN号	0926-3373
英文摘要	Achieving efficient production and activation of H2O2 is a promising strategy to enhance the efficiency of heterogeneous Fenton reactions. For this purpose, an ideal heterogeneous Fenton platform was constructed though chemical embedding of carbon nanodots (CDots) onto the surface of iron oxychloride (FeOCl/CDots). Experimental results and theoretical calculations confirmed that CDots acted as the reactive sites for highly effective separation of photogenerated electrons and holes in the FeOCI substrate, whereby the 02 molecules in solution could be synchronously reduced to H2O2 via a two-electron pathway (02- '02H- H2O2) on the CDots. Under visible light irradiation, the concentration of H2O2 accumulated to- 337.2 trio] L-1 in the FeOCl/CDots system, which was almost-14 times higher than that using FeOCI alone. Moreover, the FeOCI substrate with abundant Fe2+ could directly capture and activate the H2O2 to produce abundant hydroxyl radical ('OH), thereby effectively avoiding the H2O2 mass transfer limitation encountered in traditional heterogeneous Fenton reactions. In experiments with a typical organic contaminant (p-chlorophenol), the oxidation rate and mineralization efficiency in this Fenton system were-4 and 6 times higher than that achieved using Fe0C1 alone.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45019]
专题	生态环境研究中心_水污染控制实验室
推荐引用方式 GB/T 7714	Zhang, Jun,Zhang, Gong,Ji, Qinghua,et al. Carbon nanodot-modified FeOCI for photo -assisted Fenton reaction featuring synergistic in-situ H2O2 production and activation[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020,266:1-9.
APA	Zhang, Jun,Zhang, Gong,Ji, Qinghua,Lan, Huachun,Qu, Jiuhui,&Liu, Huijuan.(2020).Carbon nanodot-modified FeOCI for photo -assisted Fenton reaction featuring synergistic in-situ H2O2 production and activation.APPLIED CATALYSIS B-ENVIRONMENTAL,266,1-9.
MLA	Zhang, Jun,et al."Carbon nanodot-modified FeOCI for photo -assisted Fenton reaction featuring synergistic in-situ H2O2 production and activation".APPLIED CATALYSIS B-ENVIRONMENTAL 266(2020):1-9.