碳基光热材料用于同时产生蒸汽和发电

Carbon-based photothermal materials for the simultaneous generation of water vapor and electricity

  • 摘要: 太阳能驱动的界面水蒸发(SIVG)技术是一种新兴的淡水生产技术,具有低能耗、环保、高效等优点。碳基光热材料(CPTMs)因其优异的光热转换性能,可以在SIVG过程中引入温度和盐度梯度,为SIVG系统中蒸汽和电力的产生提供巨大的潜力。本文综述了用于清洁水和发电的各类CPTMs的研究进展。在阐述SIVG的基本原理和关键评价指标的基础上,重点评述了包括氧化石墨烯、碳纳米管、碳点和炭化生物质材料在内的各种CPTMs的光热和SIVG性能,并对水电联产的研究现状进行了分析,提出了应对挑战的策略,旨在为用于同时产生蒸汽和发电的多功能碳基光热材料的发展提供一些指导。

     

    Abstract: Solar-driven interfacial vapor generation (SIVG) is increasingly used for fresh water production, having the advantages of low energy consumption, eco-friendliness, and high efficiency. Carbon-based photothermal materials (CPTMs) can introduce temperature and salinity gradients in the SIVG process because of their outstanding photothermal conversion properties, which have given SIVG great potential for both steam and power generation. Various kinds of CPTMs for clean water and electricity generation are discussed in this review. The basic principles and key performance indices of SIVG are first described and the photothermal and SIVG performance of various CPTMs including graphene oxides, carbon nanotubes, carbon dots and carbonized biomass are then summarized. Finally, current research concerning water/electricity cogeneration and ways to deal with the problems encountered are presented, to provide some guidelines for the use of multifunctional CPTMs for simultaneous steam and electricity generation.

     

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