光热治疗
纳米棒
材料科学
能量转换效率
辐照
光热效应
结晶度
光电子学
带隙
蒸发
纳米技术
半导体
化学工程
复合材料
物理
工程类
热力学
核物理学
作者
Lei Sun,Zhuo Li,Rui Su,Miao Yu,Zhenglin Li,Baosheng Du,Yuxiu Sun,Ping Guan,Flemming Besenbacher,Miao Yu
标识
DOI:10.1002/anie.201806611
摘要
Phase transition from WO3 to sub-stoichiometric WO2.9 by a facile method has varied the typical semiconductor to be quasi-metallic with a narrowed band gap and a shifted Femi energy to the conduction band, while maintaining a high crystallinity. The resultant WO2.9 nanorods possess a high total absorption capacity (ca. 90.6 %) over the whole solar spectrum as well as significant photothermal conversion capability, affording a conversion efficiency as high as around 86.9 % and a water evaporation efficiency of about 81 % upon solar light irradiation. Meanwhile, the promising potential of the nanorods for anticancer photothermal therapy have been also demonstrated, with a high photothermal conversion efficiency (ca. 44.9 %) upon single wavelength near-infrared irradiation and a high tumor inhibition rate (ca. 98.5 %). This study may have opened up a feasible route to produce high-performance photothermal materials from well-developed oxides.
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