Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Key Laboratory of Lignocellulosic Chemistry, Research Center of Biomass Clean Utilization, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, P.R. China.
Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Key Laboratory of Lignocellulosic Chemistry, Research Center of Biomass Clean Utilization, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, P.R. China.
J Colloid Interface Sci. 2022 Oct 15;624:70-78. doi: 10.1016/j.jcis.2022.05.102. Epub 2022 May 21.
The photothermal materials have a broad range of applications in crude oil spills treatment, desalination, and photothermal therapy. However, the rational construction of aerogels with exceptional photothermal performance is highly desired yet still challenging. Herein, a class of stable aerogels comprised of molybdenum disulfide (MoS) nanoflowers and cellulose nanofibers (CNFs) was fabricated, affording extraordinary light-to-heat energy conversion capability. Benefiting from the intercalated porous structure, the resultant cellulose nanofibers/molybdenum disulfide (CNF/MoS) aerogels deliver an ultrahigh temperature output up to 260.4 °C with near infrared (NIR) laser power densities of 0.8 W cm. Remarkably, when NIR laser power density increased to 1.0 W cm, the aerogels began to burn, achieving the superhigh surface temperature of ∼ 690 °C. The combustion process of CNF/MoS composite aerogels was evaluated in detail. Therefore, this work provides experiment evidence and theoretical basis for the rational applications of photothermal materials at high temperature in future.
光热材料在处理原油泄漏、海水淡化和光热治疗等方面具有广泛的应用。然而，具有卓越光热性能的气凝胶的合理构建仍然具有很大的挑战性。在此，我们制备了一类由二硫化钼（MoS）纳米花和纤维素纳米纤维（CNF）组成的稳定气凝胶，赋予了其非凡的光热能量转换能力。得益于插层多孔结构，所得纤维素纳米纤维/二硫化钼（CNF/MoS）气凝胶在近红外（NIR）激光功率密度为 0.8 W cm 的条件下，可提供高达 260.4°C 的超高温度输出。值得注意的是，当 NIR 激光功率密度增加到 1.0 W cm 时，气凝胶开始燃烧，实现了高达约 690°C 的超高表面温度。详细评估了 CNF/MoS 复合气凝胶的燃烧过程。因此，这项工作为今后在高温下合理应用光热材料提供了实验证据和理论基础。
