Li Jun, Wu Enhui, Xu Zhong, Hou Jing, Peng Wenjing, Li Hong, Li Xiang
Panzhihua University, Panzhihua 617000, China.
Vanadium and Titanium Resources Comprehensive Utilization Key Laboratory of Sichuan Province, Panzhihua 617000, China.
iScience. 2025 Mar 10;28(4):112188. doi: 10.1016/j.isci.2025.112188. eCollection 2025 Apr 18.
The application of photothermal conversion technology in the fields of seawater desalination and wastewater treatment stands as a potent approach to alleviating the global water scarcity crisis. In this research, we have successfully synthesized black titanium-based photothermal conversion materials utilizing the aluminothermic reduction method. The experimental results demonstrate that the crafted black TiO exhibits a notable overall solar energy absorptivity of 65.7% and a photothermal conversion efficiency of 87.5%. Notably, the black Magneli phase titanium oxide (TiO and TiO), derived from nanorutile TiO, exhibits an even more impressive overall solar absorptivity of 83.4% and a photothermal conversion efficiency of 93.8%. Under a light intensity of 5 kW/m, this material achieves an evaporation rate of 4.4 kg m·h and an evaporation efficiency of 63%, underscoring its vast potential for applications in wastewater purification and seawater desalination.
光热转换技术在海水淡化和废水处理领域的应用是缓解全球水资源短缺危机的一种有效方法。在本研究中，我们利用铝热还原法成功合成了黑色钛基光热转换材料。实验结果表明，制备的黑色TiO具有65.7%的显著总太阳能吸收率和87.5%的光热转换效率。值得注意的是，由纳米金红石TiO衍生而来的黑色马格涅利相氧化钛（TiO和TiO）表现出更令人印象深刻的83.4%的总太阳能吸收率和93.8%的光热转换效率。在5 kW/m的光强下，该材料实现了4.4 kg m·h的蒸发速率和63%的蒸发效率，突出了其在废水净化和海水淡化应用中的巨大潜力。
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