Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 33, Pages 10666-10671Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201806611
Keywords
hydrogenation; nanorod; photothermal therapy; solar water evaporation; WO2.9
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Funding
- National Natural Science Foundation of China [21473045, 51401066, 51772066, U1530401]
- State Key Laboratory of Urban Water Resource and Environment [2018DX04]
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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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