Rapid preparation of highly transparent paper with high built-in haze by an ion exchange approach
Rapid preparation of highly transparent paper with high built-in haze by an ion exchange approach
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DOI：
10.1016/j.cej.2022.135776
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发表时间：
2022-03-17
影响因子：
15.1
通讯作者：
Fang, Zhiqiang
中科院分区：
文献类型：
--
作者：
Hou, Gaoyuan;Li, Guanhui;Fang, Zhiqiang
含有 2,2,6,6-四甲基哌啶-1-氧基 (TEMPO) 自由基氧化木纤维 (TOWF) 的高透明纸是一种新兴的可持续光电材料。然而，其相对较低的内置雾度和较差的生产效率是剩下的两个挑战。在这项工作中，提出了一种简便高效的离子交换方法，通过将表面的 Na+ 转化为 Ca2+ 来解决上述障碍，从而能够快速制造具有高内置雾度 (93.5%) 的高透明度 (90.0%) 纸张。此外，还探讨了Ca2+浓度与透明纸光学性能和生产效率之间的关系。当Ca2+浓度从0增加到0.8 mmol/g时，雾度从68.6%增加到93.5%，同时保持90.0%的透明度，过滤时间从62.5分钟减少到17.5分钟。最后，展示了这种透明纸在提高发光二极管（LED）和钙钛矿太阳能电池器件性能方面的两个应用案例。这项工作提出了一种简便有效的方法，可以同时提高TOWF高透明纸的内置雾度和生产效率，并可能使我们在工业规模制备透明和雾度纸方面更进一步。
Highly transparent paper with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical-oxidized wood fibers (TOWFs) is a nascent sustainable photonic material for optoelectronics. However, its relatively low built-in haze and poor production efficiency are two remaining challenges. In this work, a facile and efficient ion exchange approach is proposed to address above obstacles by converting Na+ on their surface into Ca2+, thus enabling the rapid fabrication of highly transparent (90.0%) paper with high built-in haze (93.5%). Moreover, the relationship between Ca2+ concentration and the optical properties and production efficiency of transparent paper is explored. When the Ca2+ concentration increases from 0 to 0.8 mmol/g, the haze rises from 68.6% to 93.5% while maintaining a 90.0% transparency, and the filtration time decreases from 62.5 to 17.5 min. Finally, two application cases of this transparent paper for increasing the device performance of light-emitting diode (LED) and perovskite solar cell are demonstrated. This work proposes a facile and efficient method to simultaneously enhance the build-in haze and production efficiency of highly transparent paper with TOWFs and may bring us a step further towards preparing transparent and hazy paper on an industrial scale.