The preparation of vanadium-doped TiO2-montmorillonite nanocomposites and the photodegradation of sulforhodamine B under visible light irradiation

► The different Ti/MMT ratios exerted a great influence on microstructures of the catalysts and their photocatalytic activities. ► The average sizes of V-TiO2-MMT were smaller than those of pure TiO2 and V-TiO2. ► V-TiO2-MMT/120 (120 denotes Ti/MMT is 120 mmol/g.) and V-TiO2-MMT/30 had relatively higher photocatalytic activity in comparison to the other catalysts.