使用生物质衍生水凝可持续的大气水收集:交叉连接器度和吸动力学的影响
Ngoc Thuy Nguyen1,2, Phat Tan Phan1,2, Van Danh Truong1,2
1Faculty of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam.
Langmuir : the ACS journal of surfaces and colloids
|December 8, 2025
概括
这项研究引入了来自生物质的环保生物水凝,用于大气水收集. 优化的SCG5生物水凝表现出极好的吸水和脱水能力,为水资源短缺提供可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 清洁水短缺是一个全球关键问题,污染和气候变化加剧了这一问题.
- 传统的水凝用于收集水,依赖于不可持续的化石燃料衍生的聚合物.
- 需要生物降解和环保材料来收集大气中的水.
研究的目的:
- 合成和表征从奇托和碳氧甲基纤维素的新生物水凝,用于大气水收集.
- 为了研究交叉链接内容对生物水凝特性和水吸附性能的影响.
- 评估这些生物水凝作为清洁水生产的可持续解决方案的潜力.
主要方法:
- 生物水凝 (SCG0,SCG3,SCG5,SCG7) 是使用奇托和碳氧甲基纤维素合成的.
- 材料表征包括FTIR,TGA和FESEM分析.
- 进行了水吸附和脱吸试验以评估性能,并进行了机械强度测试.
主要成果:
- 含有5%甲的SCG5生物水凝显示出最佳的交叉链接,优越的热稳定性和良好的机械强度.
- SCG5表现出高水友性,快速吸水 (2158%的质量变化,84.7 g g-1 h-1),以及高效的水蒸气吸附 (28.03%在90%的RH).
- 生物水凝表现出快速溶解 (>98%在20分钟内),在多个循环中具有出色的稳定性,并遵循埃洛维奇运动模型.
结论:
- 基于奇托和碳氧甲基纤维素的环保生物水凝对大气中的水收集有效.
- SCG5配方为解决水资源短缺问题提供了一个有希望的,可持续的材料.
- 埃洛维奇模型表明,激活部位吸附是限制速率的步骤,这表明表面机制不均.
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