Core-shell structured TiO₂@In₂O₃ with high visible-light photocatalytic activity have been successfully fabricated by solvothermal method. The as-obtained products were characterized by field transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-visible diffuse reflectance spectra (UV-vis DRS). Structural characterizations demonstrated that the In₂O₃ layers were comprised of nanocrystallites ca. 14 nm in size and displayed rough surfaces. The UV-vis DRS data showed that In₂O₃ greatly expanded the visible light absorption band edge of TiO₂. The results revealed that the obtained TiO₂@In₂O₃ with core-shell structure showed enhancement of the visible-light photocatalytic activity to degrade methyl orange (MO) comparing with the pure TiO₂ and In₂O₃ products.

溶剂热法成功制备了具有高可见光光催化活性的核-壳结构TiO ₂ @In ₂ O ₃。所获得的产物通过场透射电子显微镜（TEM），X射线衍射（XRD）和UV-可见漫反射光谱（UV-vis DRS）进行表征。结构表征表明，In ₂ O ₃层由纳米晶体ca组成。尺寸为14 nm，表面粗糙。UV-vis DRS数据表明，In ₂ O ₃大大扩展了TiO ₂的可见光吸收带边缘。结果表明，所得TiO ₂ @In与纯TiO ₂和In ₂ O ₃产物相比，具有核-壳结构的₂ O ₃表现出增强的可见光光催化活性以降解甲基橙（MO）。