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Engineering attractive interaction in ZIF-based phase change materials for boosting electro- and photo- driven thermal energy storage
Chemical Engineering Journal ( IF 15.1 ) Pub Date : 2021-10-18 , DOI: 10.1016/j.cej.2021.133007
Cheng Dong 1 , Ang Li 2 , Chen Wang 3 , Jiao Li 1 , Hongyi Gao 3 , Xiao Chen 4 , Yuean Wang 2 , Lei Li 2 , Yu Zheng 2 , Ge Wang 3
Affiliation  

Metal organic frameworks contain abundant empty space for selectively absorbing phase change materials (PCM) molecules and sometimes chemically transformed. However, the strong attractive interaction between metal organic frameworks and PCM severely blocks sufficient crystalline-amorphous state transition of PCM. Herein, we proposed an attractive interaction engineering strategy on hierarchical zeolitic imidazolate frameworks (ZIF) based phase change materials (polyethylene glycol/carbon cloth@ZIF, PEG/CC@ZIF) for boosting crystalline-amorphous state transition behavior and electro-/photo- driven thermal performance. Carboxyl-modified CC scaffold regulates attractive interaction between ZIF and PEG, which enhances energy storage capacity of the phase change composite. Moreover, ZIF nanoflakes deposited on the surface of CC reduce the convective heat loss at the solid–gas interface, and CC scaffold facilitates electron transportation and photon penetration, thus significantly enhancing electro- and photo- driven thermal energy storage. Furthermore, ZIF-induced chain effect between PEG and CC enhances the mechanical properties of PEG/CC@ZIF. Notably, commercially available transition metal oxide photocatalyst can be uniformly sprayed on the surface of PEG/CC@ZIF through coordination chemical engineering for multi-functional phase change composite.



中文翻译:

基于 ZIF 的相变材料中的工程吸引力相互作用,以促进电驱动和光驱动的热能存储

金属有机骨架含有丰富的空间,用于选择性吸收相变材料 (PCM) 分子,有时还进行化学转化。然而,金属有机骨架和 PCM 之间的强吸引力相互作用严重阻碍了 PCM 足够的晶态-非晶态转变。在此,我们提出了一种基于分层沸石咪唑酯骨架(ZIF)的相变材料(聚乙二醇/碳布@ZIF、PEG/CC@ZIF)的有吸引力的相互作用工程策略,用于促进结晶-非晶态转变行为和电/光-驱动热性能。羧基修饰的 CC 支架可调节 ZIF 和 PEG 之间的吸引力相互作用,从而增强相变复合材料的储能能力。而且,沉积在 CC 表面的 ZIF 纳米薄片减少了固气界面的对流热损失,CC 支架促进了电子传输和光子渗透,从而显着增强了电驱动和光驱动的热能存储。此外,ZIF 诱导的 PEG 和 CC 之间的链效应增强了 PEG/CC@ZIF 的机械性能。值得注意的是,市售的过渡金属氧化物光催化剂可以通过配位化学工程均匀喷涂在 PEG/CC@ZIF 的表面,用于多功能相变复合材料。ZIF 诱导的 PEG 和 CC 之间的链效应增强了 PEG/CC@ZIF 的机械性能。值得注意的是,市售的过渡金属氧化物光催化剂可以通过配位化学工程均匀喷涂在 PEG/CC@ZIF 的表面,用于多功能相变复合材料。ZIF 诱导的 PEG 和 CC 之间的链效应增强了 PEG/CC@ZIF 的机械性能。值得注意的是,市售的过渡金属氧化物光催化剂可以通过配位化学工程均匀喷涂在 PEG/CC@ZIF 的表面,用于多功能相变复合材料。

更新日期:2021-10-20
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