Abstract
• Urchin-like W 18 O 49 is synthesized by using a one-step solvothermal method. • Adsorption and photocatalytic performance and influence of pH on them have been studied. • Urchin-like structure can adsorb dye molecules very well due to its high porosity and specific surface area. • Urchin-like W 18 O 49 presents excellent photothermal properties and inhibitory effect on melanoma cells under laser irradiation. In this study, using diethylene glycol as a soft template and one-step solvothermal method, we synthesized sea urchin-like W 18 O 49 . The physicochemical test results showed that the obtained W 18 O 49 had excellent adsorption and photocatalytic activity. In addition, the obtained sea urchin-like W 18 O 49 exhibited strong near-infrared absorption performance and high photothermal conversion efficiency of 41.8% under the irradiation of 980 nm laser. After 480 s of 980 nm laser irradiation (2.0 W/cm 2 ), the temperature of its aqueous dispersion (1.0 mg/mL) could rise by 49.1 °C rapidly. The results of the cell culture in vitro and the animal experiments in vivo showed that W 18 O 49 had good biocompatibility and could effectively inhibit melanoma cells (B16F10) by using the photothermal effect, showing a good application prospect.
Published Version
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