Preparation method of metal phase tungsten oxide and application of metal phase tungsten oxide

Abstract

The invention provides a preparation method of metal phase tungsten oxide, which comprises the following steps: A) carrying out hydrothermal reaction on polyethyleneimine, a tungsten source and water to obtain a precipitate; b) drying the precipitate, and calcining to obtain WO3 powder; and C) mixing the WO3 powder with metal powder, then mixing with a lithium salt solution, and reacting to obtain Li-WO3. In the preparation process of the metal phase tungsten oxide, lithium ions are introduced into WO3 crystal lattices, so that the concentration of free electrons in the material is increased, finally, the phase transformation process from an insulating phase to a metal phase is induced, and Li-WO3 energy band gaps after lithiation disappear, so that the response range of the material to infrared light can be widened; the near-infrared photothermal performance of the material is improved.

Description

technical field

[0001] The invention relates to the preparation technology of photothermal conversion materials and the application field of photothermal therapy of biological cancer, in particular to a preparation method of metal-phase tungsten oxide and the application of metal-phase tungsten oxide. Background technique

[0002] The rapid development of nanobiotechnology has produced many therapeutic strategies to combat the pathological abnormalities of cancer. Combining advanced manufacturing processes and engineering methods, various nanomedicine-based therapeutic platforms have achieved certain therapeutic effects. For example, the rapid development of nanomedical technology provides a variety of novel diagnostic methods for tumor treatment, in which non-invasive and energy-triggered technologies (such as ultrasound, X-rays, alternating magnetic fields, and infrared light) are used in vitro to effectively Tumor eradication is considered to be one of the most promising ...

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