Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight Illumination
In order to solve the problems of powder g-C<sub>3</sub>N<sub>4</sub> catalysts being difficult to recycle and prone to secondary pollution, floating network porous-like sponge monolithic structure g-C<sub>3</sub>N<sub>4</sub> (FSCN) was prepared with...
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MDPI AG
2023-05-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/10/3989 |
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| author | Delu Cao Xueying Wang Hefan Zhang Daiqiong Yang Ze Yin Zhuo Liu Changyu Lu Feng Guo |
| author_facet | Delu Cao Xueying Wang Hefan Zhang Daiqiong Yang Ze Yin Zhuo Liu Changyu Lu Feng Guo |
| author_sort | Delu Cao |
| collection | DOAJ |
| description | In order to solve the problems of powder g-C<sub>3</sub>N<sub>4</sub> catalysts being difficult to recycle and prone to secondary pollution, floating network porous-like sponge monolithic structure g-C<sub>3</sub>N<sub>4</sub> (FSCN) was prepared with a one-step thermal condensation method using melamine sponge, urea, and melamine as raw materials. The phase composition, morphology, size, and chemical elements of the FSCN were studied using XRD, SEM, XPS, and UV–visible spectrophotometry. Under simulated sunlight, the removal rate for 40 mg·L<sup>−1</sup> tetracycline (TC) by FSCN reached 76%, which was 1.2 times that of powder g-C<sub>3</sub>N<sub>4</sub>. Under natural sunlight illumination, the TC removal rate of FSCN was 70.4%, which was only 5.6% lower than that of a xenon lamp. In addition, after three repeated uses, the removal rates of the FSCN and powder g-C<sub>3</sub>N<sub>4</sub> samples decreased by 1.7% and 2.9%, respectively, indicating that FSCN had better stability and reusability. The excellent photocatalytic activity of FSCN benefits from its three-dimensional-network sponge-like structure and outstanding light absorption properties. Finally, a possible degradation mechanism for the FSCN photocatalyst was proposed. This photocatalyst can be used as a floating catalyst for the treatment of antibiotics and other types of water pollution, providing ideas for the photocatalytic degradation of pollutants in practical applications. |
| first_indexed | 2024-03-11T03:27:12Z |
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| language | English |
| last_indexed | 2024-03-11T03:27:12Z |
| publishDate | 2023-05-01 |
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| series | Molecules |
| spelling | doaj.art-38020c29ae3a40bca78ee81583e57ed22023-11-18T02:37:43ZengMDPI AGMolecules1420-30492023-05-012810398910.3390/molecules28103989Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight IlluminationDelu Cao0Xueying Wang1Hefan Zhang2Daiqiong Yang3Ze Yin4Zhuo Liu5Changyu Lu6Feng Guo7School of Water Resource and Environment, Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Geo University, Shijiazhuang 050031, ChinaSchool of Water Resource and Environment, Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Geo University, Shijiazhuang 050031, ChinaSchool of Water Resource and Environment, Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Geo University, Shijiazhuang 050031, ChinaSchool of Water Resource and Environment, Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Geo University, Shijiazhuang 050031, ChinaSchool of Water Resource and Environment, Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Geo University, Shijiazhuang 050031, ChinaSchool of Water Resource and Environment, Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Geo University, Shijiazhuang 050031, ChinaSchool of Water Resource and Environment, Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Geo University, Shijiazhuang 050031, ChinaSchool of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaIn order to solve the problems of powder g-C<sub>3</sub>N<sub>4</sub> catalysts being difficult to recycle and prone to secondary pollution, floating network porous-like sponge monolithic structure g-C<sub>3</sub>N<sub>4</sub> (FSCN) was prepared with a one-step thermal condensation method using melamine sponge, urea, and melamine as raw materials. The phase composition, morphology, size, and chemical elements of the FSCN were studied using XRD, SEM, XPS, and UV–visible spectrophotometry. Under simulated sunlight, the removal rate for 40 mg·L<sup>−1</sup> tetracycline (TC) by FSCN reached 76%, which was 1.2 times that of powder g-C<sub>3</sub>N<sub>4</sub>. Under natural sunlight illumination, the TC removal rate of FSCN was 70.4%, which was only 5.6% lower than that of a xenon lamp. In addition, after three repeated uses, the removal rates of the FSCN and powder g-C<sub>3</sub>N<sub>4</sub> samples decreased by 1.7% and 2.9%, respectively, indicating that FSCN had better stability and reusability. The excellent photocatalytic activity of FSCN benefits from its three-dimensional-network sponge-like structure and outstanding light absorption properties. Finally, a possible degradation mechanism for the FSCN photocatalyst was proposed. This photocatalyst can be used as a floating catalyst for the treatment of antibiotics and other types of water pollution, providing ideas for the photocatalytic degradation of pollutants in practical applications.https://www.mdpi.com/1420-3049/28/10/3989photocatalysisg-C<sub>3</sub>N<sub>4</sub>floating catalystnatural sunlighttetracycline |
| spellingShingle | Delu Cao Xueying Wang Hefan Zhang Daiqiong Yang Ze Yin Zhuo Liu Changyu Lu Feng Guo Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight Illumination Molecules photocatalysis g-C<sub>3</sub>N<sub>4</sub> floating catalyst natural sunlight tetracycline |
| title | Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight Illumination |
| title_full | Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight Illumination |
| title_fullStr | Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight Illumination |
| title_full_unstemmed | Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight Illumination |
| title_short | Rational Design of Monolithic g-C<sub>3</sub>N<sub>4</sub> with Floating Network Porous-like Sponge Monolithic Structure for Boosting Photocatalytic Degradation of Tetracycline under Simulated and Natural Sunlight Illumination |
| title_sort | rational design of monolithic g c sub 3 sub n sub 4 sub with floating network porous like sponge monolithic structure for boosting photocatalytic degradation of tetracycline under simulated and natural sunlight illumination |
| topic | photocatalysis g-C<sub>3</sub>N<sub>4</sub> floating catalyst natural sunlight tetracycline |
| url | https://www.mdpi.com/1420-3049/28/10/3989 |
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