基于废棉再生的碳微球/气凝胶光热复合材料的制备及性能
Preparation and characteristics of carbon microspheres/aerogel photothermal composites derived from waste cotton regeneration
何万万 1李珍珍 1余灵婕 1孟家光 1支超1
作者信息
- 1. 西安工程大学纺织科学与工程学院,陕西西安 710048
- 折叠
摘要
针对淡水资源短缺以及废旧棉织物高值化处理困难,以废旧棉纤维为原料,使用水热法制备碳微球,在氢氧化钠/尿素体系中溶解棉纤维制备纤维素水凝胶,将碳微球添加到水凝胶中均匀混合,经过冷冻干燥制得以碳微球为光热转换材料的再生纤维素气凝胶基界面蒸发器(aerogel-based interfacial evaporator,AER).分别对不同纤维素和碳微球含量所制备的材料进行蒸发实验,分析参数对AER性能的影响.结果表明:纤维素和碳微球质量分数分别为2％、0.2％时,AER的水蒸发速率达到最高,为1.58 kg·m-2·h-1,光热转换效率达到85.85％.
Abstract
In view of the shortage of fresh water resources and the difficulty of high-value treatment of waste cotton fabric,carbon microspheres were prepared by hydrothermal method using waste cotton fiber as raw material,and cellulose hydrogels were prepared by dissolving cotton fibers in sodium hydroxide/urea system.Carbon microspheres were added to the hydrogels and mixed uniformly,and a regenerative cellulose aerogel-based interfacial evaporator(AER),which uses carbon microspheres as photothermal conversion material,was obtained after freeze-drying.Evaporation experiments were carried out on the materials prepared with different cellulose and carbon microsphere con-tents,respectively,to analyze the effects of parameters on the performance of AER.The results show that the water evaporation rate of AER reaches the highest of 1.58 kg·m-2·h-1 and the photothermal conversion efficiency reaches 85.85％when the mass fractions of cel-lulose and car-bon microspheres are 2％and 0.2％,respectively.
关键词
废旧棉纤维/碳微球/纤维素气凝胶/海水淡化/光热转换材料Key words
waste cotton fiber/carbon microspheres/cellulose aerogel/desalination/photother-mal conversion material引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据