| 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, Zhigang1,2; Liu, Lusheng1; Gao, Weichun3,4; Zhai, Zhaofeng1; Song, Haozhe; Chen, Bin1,2; Zheng, Ziwen1,2; Yang, Bing1,2; Geng, Cong3,4; Liang, Jiyan3,4; Jiang, Xin1; Huang, Nan1,2 | |
| Corresponding Author | Jiang, Xin(xjiang@imr.ac.cn) ; Huang, Nan(nhuang@imr.ac.cn) |
| 2022-12-01 | |
| Source Publication | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| ISSN | 1383-5866 |
| Volume | 302Pages:10 |
| Abstract | 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. |
| Keyword | Boron -doped diamond Porous Film Electrochemical advanced oxidation Hydroxyl radical Sulfate radical |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000876088100004 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/176473 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jiang, Xin; Huang, Nan |
| Affiliation | 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 |
| Recommended Citation 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. |
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