In the present work, V₂O₅ microspheres with the diameters ranging from 1 to 2 μm are prepared by a facile hydrothermal progress, and then V₂O₅@TiO₂ core-shell microspheres are successfully synthesized by a solution method. It is found that the light absorption intensity of V₂O₅@TiO₂ core-shell microspheres is greatly enhanced compared with those of V₂O₅ microspheres and P25 in UV and visible light ranges. The photodegradation rate towards gaseous benzene of V₂O₅@TiO₂-20% core-shell microspheres is the best one, and it will increase from 27.8% and 10% (pure V₂O₅ microspheres) to be 100% and 71.8% after 75 min’ irradiation under UV and visible light irradiation, respectively. The reason lies in the fact that the formation of V₂O₅@TiO₂ core-shell microspheres may favor for the light absorption as well as the effective separation of the photoexcited electrons and holes.

在本工作中，通过简便的水热工艺制备了直径为1至2μm的V ₂ O ₅微球，然后通过溶液法成功合成了V ₂ O ₅ @TiO ₂核壳微球。发现在紫外和可见光范围内，V ₂ O ₅ @TiO ₂核壳微球的光吸收强度比V ₂ O ₅微球和P25的光吸收强度大大提高。V ₂ O ₅ @TiO ₂对气态苯的光降解速率-20％的核壳微球是最好的，在紫外线和可见光照射75分钟后，它将从27.8％和10％（纯V ₂ O ₅微球）分别增加到100％和71.8％。 。原因在于，V ₂ O ₅ @TiO ₂核-壳微球的形成可能有利于光吸收以及光激发电子和空穴的有效分离。