Xu Ruiqi, Wei Na, Li Zhenkui, Song Xiaojie, Li Qi, Sun Kunyu, Yang Enquan, Gong Like, Sui Yiling, Tian Jian, Wang Xin, Zhao Minggang, Cui Hongzhi
School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
J Colloid Interface Sci. 2021 Feb 15;584:125-133. doi: 10.1016/j.jcis.2020.09.052. Epub 2020 Sep 23.
Solar steam generation has been considered one of the most promising approaches for dealing with the energy and freshwater resource crises in recent years. However, achieving high efficiency in photo-thermal conversion remains a considerable challenge. Here, a series of hierarchical TiC/MoS nanocomposites were designed for steam generation by a hydrothermal method. When the mass fraction of MoS reached 65 wt% (TM-3), the TiC/MoS nanocomposite presented a strong broad-band light absorption of 92.4% from the UV to NIR region because of the accordion-like layered structure. The evaporation rate and solar-thermal conversion efficiency of the TM-3 with as-fabricated evaporator could reach 1.36 kg·m·h and 87.2% under 1 kW/m, due to the excellent light absorption ability of TM-3 and the low thermal energy loss (8.8%) of the evaporator. Meanwhile, TM-3 permits the evaporator to have remarkable cycle stability because of its hydrophobic properties. Moreover, TM-3 showed excellent seawater desalination and wastewater treatment abilities. Thus, the excellent light absorption ability, photo-thermal conversion efficiency, and stability of the overall system suggested that these nanocomposites show great potential applications in synergetic solar desalination and sewage treatment.
近年来，太阳能蒸汽发生被认为是应对能源和淡水资源危机最具前景的方法之一。然而，实现高效的光热转换仍然是一个巨大的挑战。在此，通过水热法设计了一系列用于蒸汽发生的分级TiC/MoS纳米复合材料。当MoS的质量分数达到65 wt%（TM-3）时，由于其类似手风琴的层状结构，TiC/MoS纳米复合材料在紫外到近红外区域呈现出92.4%的强宽带光吸收。由于TM-3优异的光吸收能力和蒸发器低的热能损失（8.8%），带有预制蒸发器的TM-3在1 kW/m²下的蒸发速率和太阳能-热转换效率可分别达到1.36 kg·m⁻²·h⁻¹和87.2%。同时，由于其疏水特性，TM-3使蒸发器具有显著的循环稳定性。此外，TM-3表现出优异的海水淡化和废水处理能力。因此，这些纳米复合材料优异的光吸收能力、光热转换效率和整体系统的稳定性表明它们在协同太阳能海水淡化和污水处理方面具有巨大的潜在应用。
