| High-performance photocatalytic peroxymonosulfate activation by carbon quantum dots via precise surface chemistry regulation: Insight into the structure-function relations | |
| Han, Wenyuan1,2; Li, Degang3; Kong, Yifan3; Liu, Wei4; Qin, Wenwu1,2,6; Wang, Shaobin5; Duan, Xiaoguang5 | |
| 2023-09-15 | |
| Source Publication | JOURNAL OF COLLOID AND INTERFACE SCIENCE Impact Factor & Quartile |
| ISSN | 0021-9797 |
| Volume | 646Pages:633-648 |
| Abstract | Carbon quantum dots (CQDs) are considered promising metal-free green catalysts for the activation of persulfates, but direct experimental evidence to identify the true active sites on the surface of CQDs is still lacking. We prepared CQDs with different oxygen contents by controlling the carbonisation temperature, using a simple pyrolysis method. Photocatalytic activity experiments show that CQDs200 exhibits the best PMS activation performance. By investigating the relationship between the oxygen functional groups on CQDs surface and photocatalytic activity, it was postulated that the C=O groups might be the predominant active site, which was confirmed by selective chemical titrations of the C=O, C-OH and COOH groups. Furthermore, limited to the weak photocatalytic properties of the pristine CQDs, ammonia and phenylhydrazine were used to precisely nitrogenmodify the o-CQD surface. We found that phenylhydrazine-modified o-CQDs-PH promoted the absorption of |
| Keyword | Carbon quantum dots (CQDs) Carbonyl group Photocatalytic Peroxymonosulfate Electronic structure DFT |
| Publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| DOI | 10.1016/j.jcis.2023.05.092 |
| Indexed By | SCIE |
| Language | 英语 |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Physical |
| WOS ID | WOS:001002109700001 |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/530281 |
| Collection | 兰州大学 |
| Corresponding Author | Qin, Wenwu; Duan, Xiaoguang |
| Affiliation | 1.Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat G, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China; 2.Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Special Funct Mat & Struct Design MOE, Lanzhou 730000, Peoples R China; 3.Shandong Univ Technol, Sch Chem & Chem Engn, Zibo 255000, Peoples R China; 4.Sichuan Univ Sci & Engn, Sch Chem & Environm Engn, Zigong 643000, Peoples R China; 5.Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia; 6.Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Special Funct Mat & Struct Design MOE, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Han, Wenyuan,Li, Degang,Kong, Yifan,et al. High-performance photocatalytic peroxymonosulfate activation by carbon quantum dots via precise surface chemistry regulation: Insight into the structure-function relations[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2023,646:633-648. |
| APA | Han, Wenyuan.,Li, Degang.,Kong, Yifan.,Liu, Wei.,Qin, Wenwu.,...&Duan, Xiaoguang.(2023).High-performance photocatalytic peroxymonosulfate activation by carbon quantum dots via precise surface chemistry regulation: Insight into the structure-function relations.JOURNAL OF COLLOID AND INTERFACE SCIENCE,646,633-648. |
| MLA | Han, Wenyuan,et al."High-performance photocatalytic peroxymonosulfate activation by carbon quantum dots via precise surface chemistry regulation: Insight into the structure-function relations".JOURNAL OF COLLOID AND INTERFACE SCIENCE 646(2023):633-648. |
| Files in This Item: | There are no files associated with this item. | ||||
