Manufacturing 3D nano-porous architecture for boron-doped diamond film to efficient abatement of organic pollutant: Synergistic effect of hydroxyl radical and sulfate radical

doi:10.1016/j.seppur.2022.122080

IMR OpenIR

	Manufacturing 3D nano-porous architecture for boron-doped diamond film to efficient abatement of organic pollutant: Synergistic effect of hydroxyl radical and sulfate radical
	Lu, Zhigang 1,2; Liu, Lusheng 1; Gao, Weichun 3,4; Zhai, Zhaofeng 1; Song, Haozhe ; Chen, Bin 1,2; Zheng, Ziwen 1,2; Yang, Bing 1,2; Geng, Cong 3,4; Liang, Jiyan 3,4; Jiang, Xin 1; Huang, Nan 1,2
通讯作者	Jiang, Xin(xjiang@imr.ac.cn) ; Huang, Nan(nhuang@imr.ac.cn)
	2022-12-01
发表期刊	SEPARATION AND PURIFICATION TECHNOLOGY
ISSN	1383-5866
卷号	302 页码:10
摘要	Electrochemical advanced oxidation process (EAOP) has caught increasing attention in purification of organic wastewater. However, its degradation performance is chiefly relevant to electrode micro-structure and radical species. Herein, the three-dimensional (3D) nano-porous boron-doped diamond (BDD) film with controllable nano-pore size is tailored for enhancing the production of hydroxyl radical (center dot OH) and activating sulfate to sulfate radical (SO4 center dot-) in EAOP. The nano-porous BDD film favors interconnected porous structure, channel-like pores with size ranged from 10 nm to 1 mu m, highly improved electron-transfer rate and large oxygen evolution po-tential (>2.0 V). It is effective for elimination of p-nitrophenol (PNP) with pseudo first-order kinetics rate of 1.14 x 10-2 min-1 and remove rate of 92.43 % after 180 min. The indirect oxidation is the dominant mechanism of PNP degradation. Benefited from enhanced active surface area and fast mass diffusion based on 3D inter-connected porous channel, the generation of center dot OH increases from 1.41 mM to 2.20 mM after 180 min, which not only eliminates polymer intermediate, but also signally stimulates the degradation efficiency. Additionally, SO4 center dot-is produced by activation of sulfate on the nano-porous BDD film, resulting in the 79.58 % of remove rate of chemical oxygen demand in Na2SO4 which is higher than that in NaNO3 (55.20 %). Oxidation of PNP with radical quenchers is conducted and PNP remove rate slightly decreases with addition of ethanol compared to that in presence of tert-butanol, indicating both center dot OH and SO4 center dot-contribute to the oxidation of PNP but center dot OH is more important. Based on intermediate characterization, it's found that detachment of nitro, abstraction of hydrogen atom, cleavage of aromatic ring and decarboxylation reactions rapidly occur and effectively accelerate the mineralization of organic pollutant. This study enriches the EAOP application of nano-grade porous BDD film and broadens the aspect of designing porous electrode in the environment fields.
关键词	Boron -doped diamond Porous Film Electrochemical advanced oxidation Hydroxyl radical Sulfate radical
资助者	Jie Bang Gua Shuai Key Technologies R&D Program of Liaoning Province ; Instrument Development Project of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.seppur.2022.122080
收录类别	SCI
语种	英语
资助项目	Jie Bang Gua Shuai Key Technologies R&D Program of Liaoning Province[2021JH1/10400031] ; Instrument Development Project of Shenyang National Laboratory for Materials Science[L2020E08]
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:000876088100004
出版者	ELSEVIER
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/176472
专题	中国科学院金属研究所
通讯作者	Jiang, Xin; Huang, Nan
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Shenyang Univ Technol, Sch Environm & Chem Engn, Shenyang 110870, Peoples R China 4.Liaoning Prov Res Ctr Wastewater Treatment & Reuse, Shenyang 110870, Peoples R China
推荐引用方式 GB/T 7714	Lu, Zhigang,Liu, Lusheng,Gao, Weichun,et al. Manufacturing 3D nano-porous architecture for boron-doped diamond film to efficient abatement of organic pollutant: Synergistic effect of hydroxyl radical and sulfate radical[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,302:10.
APA	Lu, Zhigang.,Liu, Lusheng.,Gao, Weichun.,Zhai, Zhaofeng.,Song, Haozhe.,...&Huang, Nan.(2022).Manufacturing 3D nano-porous architecture for boron-doped diamond film to efficient abatement of organic pollutant: Synergistic effect of hydroxyl radical and sulfate radical.SEPARATION AND PURIFICATION TECHNOLOGY,302,10.
MLA	Lu, Zhigang,et al."Manufacturing 3D nano-porous architecture for boron-doped diamond film to efficient abatement of organic pollutant: Synergistic effect of hydroxyl radical and sulfate radical".SEPARATION AND PURIFICATION TECHNOLOGY 302(2022):10.