Zn-3(OH)(2)V2O7 center dot 2H(2)O/g-C3N4: A novel composite for efficient photodegradation of methylene blue under visible-light irradiation

摘要

In this work, we used a facile method to prepare a series of Zn-3(OH)(2)V2O7 center dot 2H(2)O/g-C3N4 composites in a 70 degrees C water bath for 10 h and characterized them by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-vis diffuse reflectance spectroscopy (DRS), Brunauer-Emmett-Teller (BET), and photoluminescence (PL). Degradation of methylene blue (MB) and phenol were carried out to evaluate the photocatalytic activities of samples under visible light irradiation. Presence of Zn-3(OH)(2)V2O7 center dot 2H(2)O increased surface areas and promoted the charge separation, exerted great influence on the photocatalytic activity and absorption capacity of g-C3N4. In addition, the synergic effect was explained and a possible photocatalytic mechanism was proposed. (C) 2015 Elsevier B.V. All rights reserved.