Design and Fabrication of Epichlorohydrin-Cross-Linked Methyl Cellulose Aerogel-Based Composite Materials for Magnetic UV Response Light-to-Heat Conversion and Storage.
Design and Fabrication of Epichlorohydrin-Cross-Linked Methyl Cellulose Aerogel-Based Composite Materials for Magnetic UV Response Light-to-Heat Conversion and Storage.
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DOI：
10.1021/acs.biomac.1c00650
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发表时间：
2021-09
影响因子：
6.2
通讯作者：
H. Fang;Nianrong Feng;Dongfu Wu;Dongying Hu
中科院分区：
文献类型：
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作者：
H. Fang;Nianrong Feng;Dongfu Wu;Dongying Hu
能源和信息的收集、存储和利用是解决全球能源短缺和满足信息传输需求的重要问题。本研究报道了一种纳米fe3o4和赤四糖醇（ER）功能化的交联甲基纤维素气凝胶（MC-EP）复合材料，该材料具有相变储能特性，作为光热转换和存储所需的磁性和紫外线响应。将MC-EP- er -75中的纳米fe3o4颗粒固定并填充到MC-EP的孔隙结构中。ER与MC-EP形成有效结合。纳米fe3o4的加入弥补了ER的低导热系数。MC-EP-ER-75由于装载ER，能够以79.67%的光热转换效率和79.67%的光热转换效率存储太阳辐射诱导能。热稳定性（TGA）分析结果表明，MC-EP-ER-75在200℃以下可热降解。MC-EP-ER-75的差示扫描量热曲线和潜热值（熔融/结晶焓分别为314.8和197.9 J/g）经过100次循环后没有变化。此外，它还表现出优异的饱和磁化、超顺磁性和紫外线屏蔽性能，以及对紫外线和磁场的快速响应。这为制备可用于可再生资源的光热转换-存储-释放材料和紫外磁传感器提供了一种方法。
The collection, storage, and use of energy and information are important issues for overcoming the global energy shortage while satisfying the demand for information transmission. This research reports a nano-Fe3O4 and erythritol (ER)-functionalized, cross-linked methyl cellulose aerogel (MC-EP) composite that has the characteristics of phase-change energy storage as the magnetic and ultraviolet responses requisite for light-to-heat conversion and storage. The nano-Fe3O4 particles in MC-EP-ER-75 were fixed and filled into pore structures in MC-EP. ER was used to form an effective combination with MC-EP. The addition of nano-Fe3O4 compensated for the low thermal conductivity of ER. The MC-EP-ER-75 was able to store solar radiation-induced energy due to the loading of ER at a photothermal conversion efficiency of 79.67% and a light-to-heat conversion efficiency of 79.67%. The results of thermal stability (TGA) analysis showed that MC-EP-ER-75 was thermally degraded acceptably below 200 °C. The differential scanning calorimetry curve and latent heat values (melting/crystallization enthalpies of 314.8 and 197.9 J/g, respectively) of MC-EP-ER-75 did not change after 100 cycles. In addition, it exhibited excellent saturation magnetization, super-paramagnetism, and ultraviolet shielding, as well as a rapid response to the ultraviolet and magnetic fields. This provided a way to prepare light-to-heat conversion-storage-release materials and ultraviolet-magnetic sensors that can be used in renewable resources.