This study focused on the preparation, characterization and photocatalytic performance of a monolithic composite made from vanadium-titanium magnetite tailings and quartz sand. Rhodamine B was used as a pollutant model and the photocatalytic degradation of rhodamine B by the prepared composites was investigated. The results indicated that the composite could effectively degraded Rhodamine B, achieving a degradation rate of 98 % within 20 min under optimal conditions. Investigations on the degradation mechanism revealed that dissolved oxygen, superoxide radicals, and the sensitization of Rhodamine B are crucial to the photocatalytic degradation process of Rhodamine B. These results suggest potential benefits for the comprehensive utilization of vanadium titanomagnetite tailings.

中文翻译：

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钒钛磁铁矿尾矿/石英砂整体复合材料的制备及罗丹明B的光催化降解


本研究重点研究了以钒钛磁铁矿尾矿和石英砂为原料制备的整体复合材料的制备、表征和光催化性能。以罗丹明 B 为污染物模型，研究了所制备复合材料对罗丹明 B 的光催化降解。结果表明，该复合材料能有效降解罗丹明B，在最佳条件下，20 min内降解率达98 %。对降解机制的研究表明，溶解氧、超氧自由基和罗丹明 B 的敏化对罗丹明 B 的光催化降解过程至关重要。这些结果表明，钒钛磁铁矿尾矿的综合利用具有潜在优势。