Abstract Novel ternary heterogeneous MoS2/TiO2/clinoptilolite (MTC) nanocomposites with the hierarchical structure were synthesized via a moderate hydrothermal route. Under visible light illumination, the MTC exhibited remarkably enhanced photodegradation activity towards xanthates because of the excellent adsorption ability of clinoptilolite and effective formation of MoS2/TiO2 heterojunction within the nanocomposites. Degradation behavior of the photocatalysts under different synthesis and application parameters were investigated in detail. The results demonstrated that the kinetics of all the degradation process followed the pseudo-first-order model. Radical scavenger tests indicated that superoxide radical anions ( Â · O 2 - ) was the dominant active species in the reaction system. The possible formation mechanism of the ternary hierarchical structure and photodegradation mechanism over the MTC samples were also proposed. The present work reports a novel approach to design and prepare mineral-based photocatalysts, which have a promising application prospect for the treatment of flotation wastewater.

中文翻译：

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水热合成新型三元分层 MoS2/TiO2/斜发沸石纳米复合材料，对黄原酸盐的可见光响应显着增强

摘要 通过温和的水热路线合成了具有分级结构的新型三元异质MoS2/TiO2/斜发沸石(MTC)纳米复合材料。在可见光照射下，由于斜发沸石的优异吸附能力和纳米复合材料内 MoS2/TiO2 异质结的有效形成，MTC 对黄原酸盐的光降解活性显着增强。详细研究了光催化剂在不同合成和应用参数下的降解行为。结果表明，所有降解过程的动力学遵循拟一级模型。自由基清除剂测试表明，超氧自由基阴离子 (··O 2 - ) 是反应体系中的主要活性物质。还提出了MTC样品上三元层次结构的可能形成机制和光降解机制。目前的工作报告了一种设计和制备矿物基光催化剂的新方法，该方法在浮选废水处理方面具有广阔的应用前景。