Results
Title

Phase‐Transition Induced Conversion into a Photothermal Material: Quasi‐Metallic WO<sub>2.9</sub> Nanorods for Solar Water Evaporation and Anticancer Photothermal Therapy.

Authors

Sun, Lei; Li, Zhuo; Su, Rui; Wang, Yuanlin; Li, Zhenglin; Du, Baosheng; Sun, Ye; Guan, Pengfei; Besenbacher, Flemming; Yu, Miao

Abstract

Abstract: 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.

Subjects

PHASE transitions; NANORODS; EVAPORATION (Chemistry); PHOTOTHERMAL conversion; ABSORPTION

Publication

Angewandte Chemie, 2018, Vol 130, Issue 33, p10826

ISSN

0044-8249

Publication type

Academic Journal

DOI

10.1002/ange.201806611