Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic Wastewater
When the typical solar-driven hydrogel water evaporator treats the organic sewage, the organic pollutants will be accumulated in the evaporator and affect the evaporation performance. This issue is resolved by using silver–disulfide bonding to fix the silver oxide/silver (Ag<sub>2</sub>O...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/7/648 |
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| author | Xin Li Jionghao Feng Haijun Wang Florian Ion Tiberiu Petrescu Ying Li |
| author_facet | Xin Li Jionghao Feng Haijun Wang Florian Ion Tiberiu Petrescu Ying Li |
| author_sort | Xin Li |
| collection | DOAJ |
| description | When the typical solar-driven hydrogel water evaporator treats the organic sewage, the organic pollutants will be accumulated in the evaporator and affect the evaporation performance. This issue is resolved by using silver–disulfide bonding to fix the silver oxide/silver (Ag<sub>2</sub>O/Ag) nanoparticles inside the polyacrylamide-acrylic acid hydrogel, resulting in the photocatalytic degradation of methyl orange and solar-driven water evaporation. Ag<sub>2</sub>O/Ag nanoparticles are a solar–thermal conversion material used to replace the traditional carbon material. On the one hand, the heterojunction structure of Ag<sub>2</sub>O/Ag enhances the separation ability of the photogenerated carriers, thereby increasing the photocatalytic efficiency. On the other hand, the surface of the nanoparticles is grafted with N, N′-bis(acryloyl) cystamine and becomes the crosslinking agent which is fixed in the hydrogel. Meanwhile, the inverted pyramid structure can be built at the surface of the hydrogel by soft imprinting technology. This kind of structure has excellent light trapping performance, which can increase the efficiency of Ag<sub>2</sub>O/Ag photocatalysis. Furthermore, the dynamic reversible coordination effect between Fe<sup>3+</sup> and carboxyl realizes the self-healing capability of the hydrogel. Here are the properties of hydrogel: the fracture stress is 0.35 MPa, the fracture elongation is 1320%, the evaporation rate is 1.2 kg·m<sup>−2</sup>·h<sup>−1</sup>, and the rate of the photocatalytic degradation of methyl orange is 96% in 3 h. This self-healing hydrogel membrane provides a strategy to steadily get clean water from organic sewage. |
| first_indexed | 2024-03-11T00:50:51Z |
| format | Article |
| id | doaj.art-66914e8ec0c34d1aba01311fe551c995 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-11T00:50:51Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-66914e8ec0c34d1aba01311fe551c9952023-11-18T20:26:20ZengMDPI AGMembranes2077-03752023-07-0113764810.3390/membranes13070648Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic WastewaterXin Li0Jionghao Feng1Haijun Wang2Florian Ion Tiberiu Petrescu3Ying Li4The Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaThe Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaThe Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaDepartment of Mechanisms and Robots Theory, Bucharest Polytechnic University, 060042 Bucharest, RomaniaThe Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, ChinaWhen the typical solar-driven hydrogel water evaporator treats the organic sewage, the organic pollutants will be accumulated in the evaporator and affect the evaporation performance. This issue is resolved by using silver–disulfide bonding to fix the silver oxide/silver (Ag<sub>2</sub>O/Ag) nanoparticles inside the polyacrylamide-acrylic acid hydrogel, resulting in the photocatalytic degradation of methyl orange and solar-driven water evaporation. Ag<sub>2</sub>O/Ag nanoparticles are a solar–thermal conversion material used to replace the traditional carbon material. On the one hand, the heterojunction structure of Ag<sub>2</sub>O/Ag enhances the separation ability of the photogenerated carriers, thereby increasing the photocatalytic efficiency. On the other hand, the surface of the nanoparticles is grafted with N, N′-bis(acryloyl) cystamine and becomes the crosslinking agent which is fixed in the hydrogel. Meanwhile, the inverted pyramid structure can be built at the surface of the hydrogel by soft imprinting technology. This kind of structure has excellent light trapping performance, which can increase the efficiency of Ag<sub>2</sub>O/Ag photocatalysis. Furthermore, the dynamic reversible coordination effect between Fe<sup>3+</sup> and carboxyl realizes the self-healing capability of the hydrogel. Here are the properties of hydrogel: the fracture stress is 0.35 MPa, the fracture elongation is 1320%, the evaporation rate is 1.2 kg·m<sup>−2</sup>·h<sup>−1</sup>, and the rate of the photocatalytic degradation of methyl orange is 96% in 3 h. This self-healing hydrogel membrane provides a strategy to steadily get clean water from organic sewage.https://www.mdpi.com/2077-0375/13/7/648hydrogel membranephotothermalphotocatalyticself-healinghydrogellight trapping |
| spellingShingle | Xin Li Jionghao Feng Haijun Wang Florian Ion Tiberiu Petrescu Ying Li Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic Wastewater Membranes hydrogel membrane photothermal photocatalytic self-healing hydrogel light trapping |
| title | Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic Wastewater |
| title_full | Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic Wastewater |
| title_fullStr | Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic Wastewater |
| title_full_unstemmed | Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic Wastewater |
| title_short | Self-Healing Hydrogel Membrane Provides a Strategy for the Steady Production of Clean Water from Organic Wastewater |
| title_sort | self healing hydrogel membrane provides a strategy for the steady production of clean water from organic wastewater |
| topic | hydrogel membrane photothermal photocatalytic self-healing hydrogel light trapping |
| url | https://www.mdpi.com/2077-0375/13/7/648 |
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