| 초록 |
In this study, monoclinic-tetragonal heterostructured BiVO4 was successfully synthesized by an EGME-H2O mixed solvothermal method and characterized by XRD, Raman, FE-SEM, TEM and UV-vis DRS. The results shown that the present of EGME play an important factor not only in the control of crystal morphology but also in the formation crystal phase of BiVO4. BiVO4 crystal with monoclinic-tetragonal heterophase structure could promote the separation of photogenerated electron-hole pairs, which shows high photocatalytic activitsy towards RhB photodecomposition under visible light irradiation, much better than single-phase monoclinic scheelite BiVO4. Besides, the surface morphology, crystalline phase, optical properties and photocatalytic activity of BiVO4 can be tuned by controlling the EGME/H2O volume ratio. |
