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文章编号:1672-6987(2026)05-0057-07;DOI:10. 16351/j. 1672-6987. 2026. 05. 007
陈 龙,袁 勋,朱海光* (青岛科技大学 材料科学与工程学院,山东 青岛 266042)
摘 要:设计了一种负载氯化钙(CaCl2)的海藻酸钠/石墨烯吸湿凝胶,用于空气水分子捕获 和收集。首先,采用液氮的定向冷冻技术制备具有多孔的还原氧化石墨烯(RGO)和海藻酸钠 (SA)复合物凝胶(RGO-SA),然后将 CaCl2吸湿盐限制在 RGO-SA 孔道,合成一种具有光热 转换的吸湿凝胶(CaCl2@RGO-SA)。由于 CaCl2和 SA 优异吸湿性,所设计 CaCl2@RGO-SA 吸湿凝胶在不同湿度条件下表现出良好的雾水捕获能力,在湿度为 90% 时可以吸附自身质量 约 1. 85 倍水分。同时,利用 RGO 良好的光热转换能力,在光照下 CaCl2@RGO-SA 吸湿凝胶 能够快速地释放吸附的水,从而实现从空气中生产水。此外,CaCl2@RGO-SA 优异的吸附能 力和抗菌性能可以有效地去除自然雾水的金属离子并杀死细菌,得到符合饮用水标准的水。
关键词:淡水短缺;雾水收集;还原氧化石墨烯;海藻酸钠;吸湿盐
中图分类号:TQ 110. 3 文献标志码:A
引用格式:陈龙,袁勋,朱海光 . 负载氯化钙的吸湿凝胶的制备及其吸湿特性[J]. 青岛科技 大学学报(自然科学版),2026,47(5):57-63.
CHEN Long, YUAN Xun, ZHU Haiguang. Preparation of CaCl2 loaded hygroscopic gel and its hygroscopic properties[J]. Journal of Qingdao University of Science and Technology (Natural Science Edition),2026,47(5):57-63.
Preparation of CaCl2 Loaded Hygroscopic Gel and Its Hygroscopic Properties
CHEN Long,YUAN Xun,ZHU Haiguang (College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract:A photothermal hygroscopic gel was designed for moisture capture and collection. Firstly, a porous reduced graphene oxide (RGO) and sodium alginate (SA) composite gel (RGO-SA) was prepared by directional freezing of liquid nitrogen, and then calcium chloride (CaCl2) hygroscopic salts were confined within RGO-SA channels to prepare RGO-SA loaded with CaCl2(CaCl2@RGO-SA). Owing to the good hygroscopic properties of CaCl2 and SA, the designed CaCl2@RGO-SA hygroscopic gel exhibited excellent fog water capture ability under different humidity conditions and could harvest about 1. 85 times its weight at a relative humidity of 90%. Additionally, benefiting from the high photothermal ability of RGO, CaCl2@RGO-SA hygroscopic gel can quickly release the absorbed water under light illumination, realizing the water production from the moisture. Moreover, CaCl2@RGO-SA with excellent adsorption capacity and antibacterial properties can effectively remove metal ions from natural humidity and kill bacteria, thereby producing water meeting drinking water standards.
Key words:shortage of fresh water; fog collection; reduced graphene oxide; sodium alginate; hygroscopic salt
收稿日期:2025-10-13
基金项目:国家自然科学基金项目(21908121);青岛科技大学科研启动基金项目(210/010029031,210/010029008).
作者简介:陈 龙(1997—),男,硕士研究生 . *通信联系人 .