Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater Desalination
Abstract The growing scarcity of freshwater, driven by climate change and pollution, necessitates the development of efficient and sustainable desalination technologies. Solar‐powered interfacial water evaporation has emerged as a promising solution; however, its practical implementation is hindered...
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| Format: | Article |
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Wiley
2025-07-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202502989 |
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| author | Qisheng Shao Yutong Ding Wenxian Liu Jia Guan Ge Meng Tairong Kuang Dingsheng Wang |
| author_facet | Qisheng Shao Yutong Ding Wenxian Liu Jia Guan Ge Meng Tairong Kuang Dingsheng Wang |
| author_sort | Qisheng Shao |
| collection | DOAJ |
| description | Abstract The growing scarcity of freshwater, driven by climate change and pollution, necessitates the development of efficient and sustainable desalination technologies. Solar‐powered interfacial water evaporation has emerged as a promising solution; however, its practical implementation is hindered by the limited availability of efficient and stable photothermal materials. Herein, a bandgap engineering strategy via linker modification to enhance the photothermal conversion capability of metal‐organic frameworks (MOFs) is reported toward efficient solar‐driven desalination. By systematically introducing functional groups with varying electron‐donating and electron‐withdrawing abilities, the energy bandgap of UiO–66–X (X = ─F, ─H, ─OH, ─NH2, ─(NH2)2) is finely tuned. Density functional theory (DFT) calculations and femtosecond transient absorption (fs–TA) spectroscopy reveal that stronger electron‐donating functional groups narrow the bandgap of the MOFs, thereby improving their photothermal conversion efficiency. The optimized UiO–66–(NH2)2 material reaches a peak surface temperature of 58.7 °C when exposed to simulated sunlight at ≈1 kW·m−2 with a photothermal conversion efficiency of 86.50% and an evaporation rate of 2.34 kg·m−2·h−1 with an evaporation efficiency of 97.40%. This study presents a novel approach for fine‐tuning the bandgap in photothermal materials, offering a pathway toward advanced solar desalination technologies to address the global water scarcity crisis. |
| format | Article |
| id | doaj-art-669cbb5dfe3c4366a0b173b5908e4352 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-669cbb5dfe3c4366a0b173b5908e43522025-08-20T03:36:57ZengWileyAdvanced Science2198-38442025-07-011226n/an/a10.1002/advs.202502989Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater DesalinationQisheng Shao0Yutong Ding1Wenxian Liu2Jia Guan3Ge Meng4Tairong Kuang5Dingsheng Wang6Functional Polymers & Advanced Materials (FPAM) Lab State Key Laboratory of Advanced Separation Membrane Materials College of Materials Science and Engineering Zhejiang University of Technology Hangzhou 310014 P. R. ChinaFunctional Polymers & Advanced Materials (FPAM) Lab State Key Laboratory of Advanced Separation Membrane Materials College of Materials Science and Engineering Zhejiang University of Technology Hangzhou 310014 P. R. ChinaFunctional Polymers & Advanced Materials (FPAM) Lab State Key Laboratory of Advanced Separation Membrane Materials College of Materials Science and Engineering Zhejiang University of Technology Hangzhou 310014 P. R. ChinaKey Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. ChinaKey Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. ChinaFunctional Polymers & Advanced Materials (FPAM) Lab State Key Laboratory of Advanced Separation Membrane Materials College of Materials Science and Engineering Zhejiang University of Technology Hangzhou 310014 P. R. ChinaDepartment of Chemistry Tsinghua University Beijing 100084 P. R. ChinaAbstract The growing scarcity of freshwater, driven by climate change and pollution, necessitates the development of efficient and sustainable desalination technologies. Solar‐powered interfacial water evaporation has emerged as a promising solution; however, its practical implementation is hindered by the limited availability of efficient and stable photothermal materials. Herein, a bandgap engineering strategy via linker modification to enhance the photothermal conversion capability of metal‐organic frameworks (MOFs) is reported toward efficient solar‐driven desalination. By systematically introducing functional groups with varying electron‐donating and electron‐withdrawing abilities, the energy bandgap of UiO–66–X (X = ─F, ─H, ─OH, ─NH2, ─(NH2)2) is finely tuned. Density functional theory (DFT) calculations and femtosecond transient absorption (fs–TA) spectroscopy reveal that stronger electron‐donating functional groups narrow the bandgap of the MOFs, thereby improving their photothermal conversion efficiency. The optimized UiO–66–(NH2)2 material reaches a peak surface temperature of 58.7 °C when exposed to simulated sunlight at ≈1 kW·m−2 with a photothermal conversion efficiency of 86.50% and an evaporation rate of 2.34 kg·m−2·h−1 with an evaporation efficiency of 97.40%. This study presents a novel approach for fine‐tuning the bandgap in photothermal materials, offering a pathway toward advanced solar desalination technologies to address the global water scarcity crisis.https://doi.org/10.1002/advs.202502989bandgap engineeringmetal‐organic frameworksphotothermal conversionsolar water evaporationlinker |
| spellingShingle | Qisheng Shao Yutong Ding Wenxian Liu Jia Guan Ge Meng Tairong Kuang Dingsheng Wang Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater Desalination Advanced Science bandgap engineering metal‐organic frameworks photothermal conversion solar water evaporation linker |
| title | Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater Desalination |
| title_full | Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater Desalination |
| title_fullStr | Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater Desalination |
| title_full_unstemmed | Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater Desalination |
| title_short | Bandgap Engineering on UiO–66 Metal‐Organic Framework Derivatives for Solar‐Driven Seawater Desalination |
| title_sort | bandgap engineering on uio 66 metal organic framework derivatives for solar driven seawater desalination |
| topic | bandgap engineering metal‐organic frameworks photothermal conversion solar water evaporation linker |
| url | https://doi.org/10.1002/advs.202502989 |
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