Phase-Transition Induced Conversion into a Photothermal Material: Quasi-Metallic WO_2.9 Nanorods for Solar Water Evaporation and Anticancer Photothermal Therapy

TY - JOUR

T1 - Phase-Transition Induced Conversion into a Photothermal Material

T2 - Quasi-Metallic WO2.9 Nanorods for Solar Water Evaporation and Anticancer Photothermal Therapy

AU - Sun, Lei

AU - Li, Zhuo

AU - Su, Rui

AU - Wang, Yuanlin

AU - Li, Zhenglin

AU - Du, Baosheng

AU - Sun, Ye

AU - Guan, Pengfei

AU - Besenbacher, Flemming

AU - Yu, Miao

PY - 2018/8/13

Y1 - 2018/8/13

N2 - 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.

AB - 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.

KW - hydrogenation

KW - nanorod

KW - photothermal therapy

KW - solar water evaporation

KW - WO2.9

KW - EFFICIENT ABLATION

KW - STEAM-GENERATION

KW - WO3 NANOFLAKES

KW - QUANTUM DOTS

KW - IN-VIVO

KW - CANCER

KW - AGENT

KW - PERFORMANCE

KW - HYDROGEN

KW - NANOPARTICLES

U2 - 10.1002/anie.201806611

DO - 10.1002/anie.201806611

M3 - Journal article

C2 - 29900645

SN - 1433-7851

VL - 57

SP - 10666

EP - 10671

JO - Angewandte Chemie International Edition

JF - Angewandte Chemie International Edition

IS - 33

ER -