碳纳米管/多孔纤维素凝胶材料的制备及其蒸发性能Preparation and evaporation properties of carbon nanotubes/ porous cellulose gel materials
高亚雪,王宁,李伟
摘要(Abstract):
以微晶纤维素(MCC)为基体材料、碳纳米管(CNTs)为光热转换材料,通过溶胶-凝胶法制备出用于太阳能水蒸发的碳纳米管/多孔纤维素凝胶材料(CNTs-PCG)。扫描电镜图像显示该材料具有蜂窝状的多级孔隙,可以快速吸水。太阳能水蒸发测试和红外热像测试显示该材料在1 kW/m~2的光照强度下,具有优异的蒸发性能与较高的蒸发效率:当CNTs质量分数为0.2%时,CNTs-PCG最高的水蒸发速率为1.274 kg/(m~2·h),是纯水对照组的4.2倍,水蒸发效率为82.3%,材料最高温度可达44.4℃。
关键词(KeyWords): 太阳能水蒸发;光热转换材料;纤维素;水处理
基金项目(Foundation): 天津市新材料重大专项基金(16ZXCLGX00090)
作者(Author): 高亚雪,王宁,李伟
DOI: 10.16203/j.cnki.41-1397/n.2020.02.007
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