Multifunctional Au/Ti3C2 Photothermal Membrane with Antibacterial Ability for Stable and Efficient Solar Water Purification under the Full Spectrum,ACS Sustainable Chemistry & Engineering

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Multifunctional Au/Ti3C2 Photothermal Membrane with Antibacterial Ability for Stable and Efficient Solar Water Purification under the Full Spectrum
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-08-18 , DOI: 10.1021/acssuschemeng.1c03096
Wei Qu ₁ , Huinan Zhao ₁ , Qing Zhang ₁ , Dehua Xia _{1,

2} , Zhuoyun Tang ₁ , Qi Chen ₁ , Chun He _{1,

2} , Dong Shu ₃

Affiliation

Using solar energy to generate steam is a clean and sustainable approach to address the problem of water shortage, for its potential in harvesting solar energy for various applications such as drinking water purification and sterilization. Herein, we describe a new strategy for the construction of a Au/Ti₃C₂ photothermal membrane, which can be used as a superior interface photothermal conversion material to achieve efficient evaporation and antibacterial properties under solar light irradiation. The Au/Ti₃C₂ photothermal membrane has a unique 2D layer overlap structure with a surface plasmon resonance effect and excellent solar light-to-heat conversion capability. A photothermal evaporation experiment revealed that the water evaporation rate and evaporation efficiency of the Au/Ti₃C₂ photothermal membrane reached 2.66 kg m^–2 h^–1 and 83.63%, respectively. Excitingly, the Au/Ti₃C₂ photothermal membrane also exhibited good photothermal antibacterial properties, that is, it can completely inactivate 6.7 log₁₀ cfu mL^–1Escherichia coli K-12 within 20 min and 7.1 log₁₀ cfu mL^–1Spingopyxis sp. BM1-1 within 10 min. Additionally, the Au/Ti₃C₂ photothermal membrane had good stability during photothermal evaporation. The multifunctional Au/Ti₃C₂ photothermal membrane generating steam by effectively collecting solar energy could be broadly applied in solar water purification.

中文翻译：

具有抗菌能力的多功能Au/Ti3C2光热膜可在全光谱下稳定高效地净化太阳能

使用太阳能产生蒸汽是解决缺水问题的一种清洁和可持续的方法，因为它具有收集太阳能用于饮用水净化和消毒等各种应用的潜力。在此，我们描述了一种构建 Au/Ti ₃ C ₂光热膜的新策略，该膜可用作优异的界面光热转换材料，在太阳光照射下实现高效蒸发和抗菌性能。Au/Ti ₃ C ₂光热膜具有独特的二维层重叠结构，具有表面等离子体共振效应和优异的太阳光热转换能力。光热蒸发实验表明，Au/Ti ₃ C ₂光热膜的水分蒸发速率和蒸发效率分别达到2.66 kg m ^–2 h ^–1和83.63%。令人兴奋的是，Au/Ti ₃ C ₂光热膜还表现出良好的光热抗菌性能，即它可以在 20 分钟内完全灭活 6.7 log ₁₀ cfu mL ^–1大肠杆菌K-12 和 7.1 log ₁₀ cfu mL ^–1脊髓灰质炎sp. BM1-1 在 10 分钟内。此外，Au/Ti ₃ C ₂光热膜在光热蒸发过程中具有良好的稳定性。通过有效收集太阳能产生蒸汽的多功能Au/Ti ₃ C ₂光热膜可广泛应用于太阳能水净化。

更新日期：2021-08-30

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