Fe_(3)O_(4)改性生物炭实现高效太阳能界面蒸发  

Fe_(3)O_(4)-modified Biochar for Efficient Solar Interfacial Evaporation

作　　者：陈磊 魏林杰 董传帅 张立志[1] CHEN Lei;WEI Linjie;DONG Chuanshuai;ZHANG Lizhi(School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学化学与化工学院,广州510640

出　　处：《工程热物理学报》2025年第3期918-924,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51936071)。

摘　　要：太阳能界面蒸发海水淡化是解决淡水短缺问题的有效途径之一。本研究针对现有界面蒸发材料太阳能利用率低、盐堆积严重的问题,以巴沙木为原料制备了一种具有多孔分布、单向通道的生物炭材料。在此基础上原位负载Fe_(3)O_(4)纳米颗粒,有效改善材料的亲水性和光吸收性能。在1 kW/m^(2)的光照强度下,蒸发速率高达1.448 kg·m^(−2)·h^(−1),光热转换效率最高可达96.1%,实现了较高的太阳能利用率。研究成果对界面蒸发材料的设计具有指导意义。Solar interfacial evaporation is one of the effective ways to solve the freshwater shortage problem.In this study,to address the problems of low solar energy utilization and serious salt accumulation of existing interfacial evaporation materials,a biochar material with porous distribution and unidirectional channels was prepared using balsa wood,based on which in situ loading of Fe_(3)O_(4) nanoparticles was performed to improve the hydrophilicity and light-absorption properties of the material.The evaporation rate was 1.448 kg·m^(−2)·h^(−1)under the light intensity of 1 kW/m^(2),with the photothermal conversion efficiency of 96.1%,achieving a high solar energy utilization efficiency.This research would provide valuable guidance to the design of subsequent interfacial evaporation materials.

关 键 词：界面蒸发 海水淡化 生物炭 Fe_(3)O_(4) 光热转换 

分 类 号：O359.1[理学—流体力学]