材料工程2025，Vol.53Issue(8)：129-139,11.DOI:10.11868/j.issn.1001-4381.2024.000228
泡沫碳/g-C3N4光热-光催化协同蒸发器构建及其污水蒸发降解性能
Construction of carbon foam/g-C3N4 photothermal-photocatalytic synergistic evaporator for evaporation and degradation performance of wastewater
摘要
Abstract
To enhance the energy efficiency and environmental adaptability of the solar steam generation system,the photocatalyst is introduced into the interfacial solar absorber to improve the processing efficiency of organic wastewater with the synergistic effect between solar steam generation and photocatalysis.Firstly,a carbon foam is prepared as the typical solar absorber,which endows an interfacial solar-thermal effect by liquid-phase foam method.Then,the 2D g-C3N4 is incorporated onto the carbon foam substrate to fabricate carbon foam loaded g-C3N4 photo-thermal catalytic composites(CN/CF).By investigating the structure and properties of CN/CF,it is shown that this monolith possesses a three-dimensional porous structure,which can provide convenient channels for water transfer.Then,the porous carbon foam and g-C3N4 present in the composites also extend the response of the solar spectrum and improve the utilization of solar energy.With different functions,the carbon foam can efficiently convert solar energy into heat to achieve water evaporation,and the g-C3N4 can generate electron-hole pairs under solar irradiation,which usually results in pollutant decomposition via redox reactions.By employing the study on the cyclic test of solar steam generation and temperature control experiment,it demonstrates that the solar-thermal effect can accelerate the separation of photo-induced carriers to improve the photocatalytic efficiency,together with the property that the photocatalytic process can also prevent pollutants from depositing on the absorber to enhance the stability of vapor evaporation.In a word,it exhibits a synergistic incentive effect between photothermal and photocatalytic processes.Under a simulated light of 1 kW·m-2,the evaporation rate of CN/CF can achieve a solar steam evaporation rate of 1.0788 kg·m-2·h-1,with a photocatalytic activity of degrading 89%of methylene blue after 2.5 h illumination.关键词
泡沫碳/g-C3N4/纳米片/光热水蒸发/光催化降解Key words
carbon foam/g-C3N4/nanosheet/solar steam generation/photocatalytic degradation分类
通用工业技术引用本文复制引用
王镇玉,袁家相,方伟,陈辉,杜星,何漩,李薇馨,王大珩,赵雷..泡沫碳/g-C3N4光热-光催化协同蒸发器构建及其污水蒸发降解性能[J].材料工程,2025,53(8):129-139,11.基金项目
国家自然科学基金项目(22105151,52305211) （22105151,52305211）
湖北省重点研发计划项目(2022BAA094) （2022BAA094）
湖北省自然科学基金资助项目(2021CFB469,2021CFB124,2022CFB626) （2021CFB469,2021CFB124,2022CFB626）
湖北省教育厅科学技术研究项目(B2022017) （B2022017）
