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Effects of pH value and hydrothermal time on the structure and photocatalytic activity of monoclinic scheelite BiVO4

JI GUO HUANG1, BO WANG1, SHUO PANG1, XIN-YU ZHANG1, XIN-YU YANG1, XUE-TING GUO1, XIAN-SHENG WANG1,*

Affiliation

  1. Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, PR China

Abstract

Bismuth vanadate powders were prepared by the hydrothermal method at different pH values and different hydrothermal time. The materials were characterized by XRD, SEM, XPS and UV vis DRS. The photocatalytic performance was evaluated by the degradation of methylene blue. The effect of pH values and hydrothermal time on morphology and photocatalytic performance was discussed. The highest photocatalytic performance on the degr adation of MB was observed under pH=1.0 and hydrothermal time=12h for ms BiVO4. It is concluded that the excellent photocatalytic activity of ms BiVO4 samples at low pH and short hydrothermal time was associated with lower band gap and unique morphology..

Keywords

Monoclinic Bivo4, Ph Value, Hydromothermal, Time Photocatalys Activity, Methylene Blue.

Citation

JI GUO HUANG, BO WANG, SHUO PANG, XIN-YU ZHANG, XIN-YU YANG, XUE-TING GUO, XIAN-SHENG WANG, Effects of pH value and hydrothermal time on the structure and photocatalytic activity of monoclinic scheelite BiVO4, Optoelectronics and Advanced Materials - Rapid Communications, 9, 9-10, September-October 2015, pp.1273-1279 (2015).

Submitted at: April 24, 2015

Accepted at: Sept. 9, 2015