Abstract In this work, a black vacuum-plasma-sprayed Ta2O5 coating (VTO) was fabricated using white Ta2O5 powder as a raw material. Interestingly, a gray Ta2O5 coating was obtained by heat treatment of VTO coating (HVTO). The morphology, phase composition, photothermal conversion and cancer therapy effect in vitro of VTO and HVTO were comprehensively evaluated. Experimental results showed that VTO exhibited higher photothermal conversion effect and had an efficiency of 30.8% with high photostability. It has been proved that the VTO coating could be used in potential applications for bone tumor therapy.

中文翻译：

---

用于骨肿瘤治疗的具有光热效应的黑色等离子喷涂 Ta 2 O 5 涂层

摘要 在这项工作中，以白色 Ta2O5 粉末为原料制备了黑色真空等离子喷涂 Ta2O5 涂层 (VTO)。有趣的是，通过热处理 VTO 涂层 (HVTO) 获得了灰色的 Ta2O5 涂层。综合评价了VTO和HVTO的形态、相组成、光热转化和体外癌症治疗效果。实验结果表明，VTO具有较高的光热转换效果，效率为30.8%，具有较高的光稳定性。已经证明 VTO 涂层可用于骨肿瘤治疗的潜在应用。