کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7143254 | 1462057 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rod-shaped NaY(MoO4)2:Sm3+/Yb3+ nanoheaters for photothermal conversion: Influence of doping concentration and excitation power density
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Thermal effect of rare earth (RE) ions doped nanoparticles under near-infrared light irradiation has been underestimated, because main interest and efforts still fall into the distinctive up-converting luminescence property of these particles. In this work, we demonstrate an approach to convert 980Â nm light energy to heat energy via a designed nanoheater which is Sm3+/Yb3+ codoped NaY(MoO4)2 nanorods derived from a microwave-assisted hydrothermal reaction. To inspect the photothermal conversion effect of the nanoheaters, Er3+/Yb3+ codoped NaY(MoO4)2 nanorods are prepared via the same synthesis route. A convenient strategy, in which NaY(MoO4)2:Er3+/Yb3+ nanorods are used as nanothermometer, is proposed to monitor the laser-induced temperature change of the nanoheaters by mixing a small amount of nanothermometer with nanoheater. The influence of Sm3+/Yb3+ concentrations and excitation power density on the final temperature of the nanoheaters is studied. It is found that when Yb3+ concentration is fixed to be 10Â mol%, the influence of increasing Sm3+ concentration on the photothermal conversion effect is limited; but when Sm3+ is fixed to be 5Â mol%, the photothermal conversion is enhanced greatly with the increase of Yb3+ concentration. In addition, the temperature for all the NaY(MoO4)2:Sm3+/Yb3+ nanoheaters after laser irradiation is linearly dependent on the excitation power density. In order to examine the photothermal conversion effect of the nanoheater in liquid media, the PVP (polyvinyl pyrrolidone) solution is used for accommodating the nanoheaters, and effective photothermal conversion is observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 234, 29 October 2016, Pages 286-293
Journal: Sensors and Actuators B: Chemical - Volume 234, 29 October 2016, Pages 286-293
نویسندگان
Hui Zheng, Baojiu Chen, Hongquan Yu, Xiangping Li, Jinsu Zhang, Jiashi Sun, Lili Tong, Zhongli Wu, Hua Zhong, Ruinian Hua, Haiping Xia,