Study of LiCl/MIL-101(Cr)@GO composites for water adsorption

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-05-19 DOI:10.1016/j.jssc.2025.125439

Mengyao Li , Ping Wu , Xiaoli Han , Shanshan Shi , Shiping Zhang , Li Wang , Min Xu , Xiulan Huai

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引用次数: 0

Abstract

Adsorption-based thermal energy conversion systems offer a sustainable solution for space heating and cooling applications. However, due to the limited performance of solid adsorbents, the large-scale application of this technology still requires further research. To address this challenge, we developed a composite adsorbent by integrating a graphene oxide (GO)-modified metal-organic framework (MIL-101(Cr)) with LiCl. The material was characterized using a variety of techniques to assess its improvement in three areas: water adsorption performance, heat propagation rate and stability. The synthesized material was systematically characterized to evaluate three key performance parameters: water adsorption capacity, thermal conductivity, and cyclic stability. The optimized composite LMG-3 (90 wt% LiCl) exhibits a tenfold increase in water absorption capacity compared to MIL-101(Cr)@GO at P/P₀ = 0.3. The introduction of GO significantly increases the heat diffusion coefficient, and the material exhibits excellent cyclic stability and inhibits salt deliquescence, demonstrating its potential for adsorptive thermal storage applications.

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LiCl/MIL-101(Cr)@GO复合材料的水吸附研究

基于吸附的热能转换系统为空间加热和冷却应用提供了可持续的解决方案。然而，由于固体吸附剂的性能有限，该技术的大规模应用仍需进一步研究。为了解决这一挑战，我们通过将氧化石墨烯（GO）修饰的金属有机骨架（MIL-101(Cr)）与LiCl集成开发了一种复合吸附剂。采用多种技术对该材料进行了表征，以评估其在三个方面的改进：水吸附性能、热传播速率和稳定性。对合成材料进行了系统表征，评估了三个关键性能参数：吸水性、导热性和循环稳定性。在P/P0 = 0.3时，与MIL-101(Cr)@GO相比，优化后的复合材料LMG-3 （90 wt% LiCl）的吸水能力提高了10倍。氧化石墨烯的引入显著提高了热扩散系数，材料表现出优异的循环稳定性和抑制盐潮解，显示了其吸附储热应用的潜力。

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.