摘要
目前，太阳能界面蒸发被认为是利用绿色清洁太阳能获取淡水的有效技术之一。然而，在实际蒸发过程中，水体中的污染物通常会在界面蒸发材料表面进行吸附或富集，导致界面蒸发材料的孔道被堵塞，从而严重影响光热转换效率和整个界面蒸发器的耐久性。因此，构筑能够在污染水源环境中实现高效率界面蒸发协同光催化降解的界面蒸发器具有重要意义。基于MXene比表面积大、组分灵活可调、最小纳米层厚可控等优势，并且其同时具备出色的电磁波吸收能力和局部表面等离子体共振效应，表现出良好的光热转换性能。我们从界面蒸发、光催化降解污染物污水净化以及实际应用等角度出发，将光催化与太阳能界面蒸发技术相结合，使界面蒸发器实现了全太阳光谱光热和光催化降解性能的有机耦合。本报告主要介绍了团队在具有协同光热和光催化降解性能新型MXene基界面蒸发材料及其在污水净化中的研究进展，初步探讨了界面蒸发材料对污水中污染物的光催化降解机理，以期为具有高效界面蒸发和污水净化性能界面蒸发器的设计及构筑提供借鉴。
Abstract
Currently, solar energy-driven interfacial evaporation is considered as one of the effective technologies for obtaining fresh water using green and clean solar energy. However, during the actual evaporation process, pollutants in the water body usually adsorb or accumulate on the surface of the interfacial evaporation material, leading to blockage of the pores in the material and seriously affecting the photothermal conversion efficiency and durability of the entire interfacial evaporator. Therefore, it is of great significance to construct an interfacial evaporator that can achieve efficient interfacial evaporation and synergistic photocatalytic degradation in polluted water environments. Based on advantages such as large specific surface area, flexible adjustable composition, controllable minimum nanolayer thickness, excellent electromagnetic wave absorption capability, and local surface plasmon resonance effect, MXene exhibits good photothermal conversion performance. Starting from aspects such as interfacial evaporation, photocatalytic degradation of pollutants in wastewater purification, and practical applications, we combine photocatalysis with solar energy-driven interfacial evaporation technology to achieve organic coupling of full solar spectrum photothermal and photocatalytic degradation performance in the interfacial evaporator. This report mainly introduces our team's research progress on novel MXene-based interfacial evaporation materials with synergistic photothermal and photocatalytic degradation performance and their application in wastewater purification. We also preliminarily explore the photocatalytic degradation mechanism of pollutants in wastewater by interfacial evaporation materials with high-efficiency interface evaporation and wastewater purification performance design for reference purposes.


 

界面蒸发 MXene 光热转换 光催化 污水净化