Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation
Presently, the utilization of heteroatoms- and/or metal-doped carbocatalysts for the degradation of organic pollutants via catalytic peroxymonosulfate (PMS) activation has drawn significant attention. Yet, there exists a necessity for an in-depth exploration in: (i) understanding the influence of ca...
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| Format: | Thesis |
| Language: | English |
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2024
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| Online Access: | http://eprints.usm.my/62454/ http://eprints.usm.my/62454/1/24%20Pages%20from%20MOHAMED%20FAISAL%20MALIK%20GASIM.pdf |
| _version_ | 1848884990551523328 |
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| author | Gasim, Mohamed Faisal Malik |
| author_facet | Gasim, Mohamed Faisal Malik |
| author_sort | Gasim, Mohamed Faisal Malik |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Presently, the utilization of heteroatoms- and/or metal-doped carbocatalysts for the degradation of organic pollutants via catalytic peroxymonosulfate (PMS) activation has drawn significant attention. Yet, there exists a necessity for an in-depth exploration in: (i) understanding the influence of carbonaceous properties on N, S-co-doping, (ii) assessing the effectiveness of heteroatoms tri-doping and apprehending the intra-actions among multiple heteroatoms, and (iii) identifying new transition metals that are suitable for co-doping with N to improve the catalytic activity of carbocatalysts. In view of these research gaps, the main objective of this study is to prepare multi-doped carbocatalysts for PMS activation and unveil the roles of the doped elements in the catalytic activity. Firstly, five N, S-co-doped carbocatalysts were prepared from different carbonaceous precursors, namely sawdust (SD), biochar (BC), carbon-nanotubes (CNTs), graphite (GP), and graphene oxide (GO) and compared. Generally, as the graphitization degree increased, the extent of N and S doping decreased, graphitic N configuration is preferred, and S configuration is unaltered. NS-CNTs illustrated the highest catalytic removal of ciprofloxacin (CIP) under PMS activation (0.037 min−1) due to its remarkable conductivity (3.38 S m−1) and defective sites (ID/IG = 1.28). The PMS activation pathway was dominated by singlet oxygen generation and electron-transfer regime. Secondly, N, S, B-tri-doped biochar was fabricated via a one-pot calcination technique. |
| first_indexed | 2025-11-15T19:15:29Z |
| format | Thesis |
| id | usm-62454 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T19:15:29Z |
| publishDate | 2024 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-624542025-06-13T00:55:38Z http://eprints.usm.my/62454/ Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation Gasim, Mohamed Faisal Malik QD1-999 Chemistry Presently, the utilization of heteroatoms- and/or metal-doped carbocatalysts for the degradation of organic pollutants via catalytic peroxymonosulfate (PMS) activation has drawn significant attention. Yet, there exists a necessity for an in-depth exploration in: (i) understanding the influence of carbonaceous properties on N, S-co-doping, (ii) assessing the effectiveness of heteroatoms tri-doping and apprehending the intra-actions among multiple heteroatoms, and (iii) identifying new transition metals that are suitable for co-doping with N to improve the catalytic activity of carbocatalysts. In view of these research gaps, the main objective of this study is to prepare multi-doped carbocatalysts for PMS activation and unveil the roles of the doped elements in the catalytic activity. Firstly, five N, S-co-doped carbocatalysts were prepared from different carbonaceous precursors, namely sawdust (SD), biochar (BC), carbon-nanotubes (CNTs), graphite (GP), and graphene oxide (GO) and compared. Generally, as the graphitization degree increased, the extent of N and S doping decreased, graphitic N configuration is preferred, and S configuration is unaltered. NS-CNTs illustrated the highest catalytic removal of ciprofloxacin (CIP) under PMS activation (0.037 min−1) due to its remarkable conductivity (3.38 S m−1) and defective sites (ID/IG = 1.28). The PMS activation pathway was dominated by singlet oxygen generation and electron-transfer regime. Secondly, N, S, B-tri-doped biochar was fabricated via a one-pot calcination technique. 2024-04 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/62454/1/24%20Pages%20from%20MOHAMED%20FAISAL%20MALIK%20GASIM.pdf Gasim, Mohamed Faisal Malik (2024) Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation. PhD thesis, Perpustakaan Hamzah Sendut. |
| spellingShingle | QD1-999 Chemistry Gasim, Mohamed Faisal Malik Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation |
| title | Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation |
| title_full | Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation |
| title_fullStr | Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation |
| title_full_unstemmed | Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation |
| title_short | Effect Of Multi-Elemental Doping On The Catalytic Activity Of Carbocatalysts For Antibiotics Degradation Via Peroxymonosulfate Activation |
| title_sort | effect of multi-elemental doping on the catalytic activity of carbocatalysts for antibiotics degradation via peroxymonosulfate activation |
| topic | QD1-999 Chemistry |
| url | http://eprints.usm.my/62454/ http://eprints.usm.my/62454/1/24%20Pages%20from%20MOHAMED%20FAISAL%20MALIK%20GASIM.pdf |