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Enhanced photothermal conversion performances with ultra‐broad plasmon absorption of Au in Au/Sm 2 O 3 composites
Author(s) -
Yu Yang,
Xu Sai,
Gao Yuefeng,
Jiang Muhan,
Li Xiangping,
Zhang Jinsu,
Zhang Xizhen,
Chen Baojiu
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17133
Subject(s) - photothermal therapy , materials science , lanthanide , absorption (acoustics) , infrared , photothermal effect , energy conversion efficiency , optoelectronics , composite material , nanotechnology , optics , chemistry , organic chemistry , ion , physics
Abstract Lanthanide oxides are ideal candidates as photothermal conversion agents owing to their larger photon energy and advantages in biomedical applications. However, the small absorption cross section of rare earth is not conducive of absorbing near infrared light, which will affect the photothermal conversion efficiency of lanthanide oxides. Herein, Au particles are successfully introduced into Sm 2 O 3 to form Au/Sm 2 O 3 composites. The investigation of broadband emission and thermal performances in Sm 2 O 3 and Au/Sm 2 O 3 composites confirm the ultra‐broad plasmon absorption of Au induced thermal effect is in favor of the formation of broadband emission, meanwhile, enhances the photothermal conversion capability of Au/Sm 2 O 3 composites. The temperature increases of the Au/Sm 2 O 3 composites are 5.5°C and 19.6°C compared to Sm 2 O 3 particles under the irradiation of near infrared laser with power density of 11.5 and 29.0 mW/mm 2 , respectively. In additional, the enhanced photothermal conversion effect is confirmed by the alcohol volatilization experiment and visual infrared thermal images. We present here an idea for enhancing the photothermal conversion capabilities of lanthanide oxides and highlight the promise of using this kind of materials for photothermal therapy.