Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater
Cadmium is one of the most toxic heavy metal contaminants in soils and water bodies and poses a serious threat to ecosystems and humans. However, cadmium is also an important resource widely used in many industries. The recovery of cadmium in the form of high-value products is considered as an ideal...
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| Format: | Article |
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Frontiers Media S.A.
2021-09-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2021.717210/full |
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| author | Jia-Xin Li Rou-Lan Zhang Zi-Jian Pan Yan Liao Chao-Bin Xiong Ming-Li Chen Rong Huang Xiao-Hong Pan Zhi Chen |
| author_facet | Jia-Xin Li Rou-Lan Zhang Zi-Jian Pan Yan Liao Chao-Bin Xiong Ming-Li Chen Rong Huang Xiao-Hong Pan Zhi Chen |
| author_sort | Jia-Xin Li |
| collection | DOAJ |
| description | Cadmium is one of the most toxic heavy metal contaminants in soils and water bodies and poses a serious threat to ecosystems and humans. However, cadmium is also an important resource widely used in many industries. The recovery of cadmium in the form of high-value products is considered as an ideal disposal strategy for Cd-contaminated environments. In this work, Pistia stratiotes was used to recycle cadmium from wastewaters through phytoaccumulation and then transformed into carbon-supported cadmium sulfide photocatalyst (CdS@C) through carbonization and hydrothermal reaction. The CdS@C photocatalyst contained a mixture of cubic and hexagonal CdS with lower band gap energy (2.14 eV) and high electron-hole separation efficiency, suggesting an excellent photoresponse ability and photocatalytic efficiency. The impressive stability and photocatalytic performance of CdS@C were demonstrated in efficient photodegradation of organic pollutants. •OH and O2•- were confirmed as the major active species for organic pollutants degradation during CdS@C photocatalysis. This work provides new insights into addressing Cd contaminated water bodies and upcycling in the form of photocatalyst. |
| first_indexed | 2024-12-21T16:32:20Z |
| format | Article |
| id | doaj.art-59ce4c6e6af140e8bcbaf35cc5c34e8f |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-21T16:32:20Z |
| publishDate | 2021-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-59ce4c6e6af140e8bcbaf35cc5c34e8f2022-12-21T18:57:19ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462021-09-01910.3389/fchem.2021.717210717210Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated WastewaterJia-Xin Li0Rou-Lan Zhang1Zi-Jian Pan2Yan Liao3Chao-Bin Xiong4Ming-Li Chen5Rong Huang6Xiao-Hong Pan7Zhi Chen8Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaFujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaFujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaFujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaFujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaFujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaFujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaState Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops and Key Lab of Biopesticide and Chemical Biology, Ministry of Education, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, ChinaFujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, ChinaCadmium is one of the most toxic heavy metal contaminants in soils and water bodies and poses a serious threat to ecosystems and humans. However, cadmium is also an important resource widely used in many industries. The recovery of cadmium in the form of high-value products is considered as an ideal disposal strategy for Cd-contaminated environments. In this work, Pistia stratiotes was used to recycle cadmium from wastewaters through phytoaccumulation and then transformed into carbon-supported cadmium sulfide photocatalyst (CdS@C) through carbonization and hydrothermal reaction. The CdS@C photocatalyst contained a mixture of cubic and hexagonal CdS with lower band gap energy (2.14 eV) and high electron-hole separation efficiency, suggesting an excellent photoresponse ability and photocatalytic efficiency. The impressive stability and photocatalytic performance of CdS@C were demonstrated in efficient photodegradation of organic pollutants. •OH and O2•- were confirmed as the major active species for organic pollutants degradation during CdS@C photocatalysis. This work provides new insights into addressing Cd contaminated water bodies and upcycling in the form of photocatalyst.https://www.frontiersin.org/articles/10.3389/fchem.2021.717210/fullPistia stratiotescadmium sulfidephotocatalystphytoaccumulationdegradation |
| spellingShingle | Jia-Xin Li Rou-Lan Zhang Zi-Jian Pan Yan Liao Chao-Bin Xiong Ming-Li Chen Rong Huang Xiao-Hong Pan Zhi Chen Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater Frontiers in Chemistry Pistia stratiotes cadmium sulfide photocatalyst phytoaccumulation degradation |
| title | Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater |
| title_full | Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater |
| title_fullStr | Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater |
| title_full_unstemmed | Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater |
| title_short | Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater |
| title_sort | preparation of cds c photocatalyst using phytoaccumulation cd recycled from contaminated wastewater |
| topic | Pistia stratiotes cadmium sulfide photocatalyst phytoaccumulation degradation |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2021.717210/full |
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