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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Fabrication of ground biotite based composite hydrogels for solar-driven water evaporation

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基于黑云母粉的复合水凝胶的制备及太阳能水蒸发性能研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jul.2024, Vol.47 No.7: 948-951

DOI: 10.3969/j.issn.1003-5060.2024.07.013

Authors

WANG Qiuliang, XUE Jingzhe, CHEN Sheng, LU Yang

(School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: With natural ground biotite as a photothermal conversion material and a mixture of polyvinyl alcohol and chitosan as polymeric scaffold, a series of ground biotite based composite hydrogels were prepared by cross-linking and freeze-thaw process. According to the results of X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), the existence of iron component in ground biotite is confirmed, and the content is about 3.86% by mass. The compressive stress of the hydrogels is more than double by the addition of the ground biotite with lamellar structure, which is conducive to enhancing the mechanical properties of the hydrogels. The solar-driven water evaporation rate of the hydrogels is as high as $ 1.52 \, \text{kg}/(\text{m}^2 \cdot \text{h}) $.

Keywords: ground biotite; solar photothermal conversion material; hydrogel; composite; solar-driven water evaporation

作者信息

王秋亮，薛敬哲，陈胜，陆杨

（合肥工业大学化学与化工学院，安徽合肥230009）

摘要和关键词

摘要: 文章以黑云母粉为光热转换材料、聚乙烯醇和壳聚糖为凝胶基底材料, 经交联和冻融处理制备基于云母的复合水凝胶。通过 X 射线光电子能谱 (X-ray photoelectron spectroscopy, XPS) 以及扫描电子显微镜能量散射 X 射线光谱 (scanning electron microscopy-energy dispersive X-ray spectroscopy, SEM-EDS) 分析技术确定黑云母粉含有铁元素, 其质量分数约为 3.86%。片层状结构黑云母粉的加入使水凝胶的压缩应力提升 1 倍以上, 显著增强了水凝胶的力学性能。复合水凝胶的太阳能水蒸发速率可以达到 $ 1.52 \, \text{kg}/(\text{m}^2 \cdot \text{h}) $。

关键词: 黑云母粉；太阳能光热转换材料；水凝胶；复合材料；太阳能水蒸发

Funding

国家自然科学基金资助项目（51972090）

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