Preparation method and application of visible-light responsible chromium-sulfur codoped TiO2/hollow glass bead composite catalyst

The invention relates to a preparation method and application of a visible-light responsible chromium-sulfur codoped TiO2/hollow glass bead composite catalyst. The technical scheme aims at solving the problems that a conventional TiO2 catalyst is low in visible-light absorption utilization rate and...

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Hauptverfasser:	YIN YIDONG, DU YINGQIU, SUN ZHIBO, ZHANG XIULI, MA SHICHAO, WU YAN
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The invention relates to a preparation method and application of a visible-light responsible chromium-sulfur codoped TiO2/hollow glass bead composite catalyst. The technical scheme aims at solving the problems that a conventional TiO2 catalyst is low in visible-light absorption utilization rate and bad in organic-dye removal effect, and a powdery TiO2 photocatalyst is low in adsorption capacity, easy for activity loss, easy to agglomerate and difficult to recover. The method comprises 1, pretreating a hollow glass bead, 2, preparing a sol, and 3 performing loading, so as to obtain the visible-light responsible chromium-sulfur codoped TiO2/hollow glass bead composite catalyst. By using the visible-light responsible chromium-sulfur codoped TiO2/hollow glass bead composite catalyst to process wastewater containing, the indicarmine removal rate of the wastewater is 95%-100%. The preparation method for the visible-light responsible chromium-sulfur codoped TiO2/hollow glass bead composite catalyst is provided.