Bi-functional Cu-TiO2/CuO photocatalyst for large-scale synergistic treatment of waste sewage containing organics and heavy metal ions
Source abstract
Abstract
大多数所制备的光催化剂通常只用于单一地降解有机污染物或还原Cr(VI)的光催化. 然而, 无机和有机污染物通常共存于工业污水中.同时消除混合的无机和有机污染物仍然存在着巨大的挑战. 在本文中,我们通过原位掺杂和异质结工程策略, 制备出了新型的双功能Cu-TiO2/CuO光催化剂用于大规模高效协同光催化消除废水中的有机污染物和过渡金属离子. 具体而言, 这种双功能光催化剂在RhB和Cr(VI)共存溶液中的光催化RhB降解率和Cr(VI)还原率分别是在单一RhB或Cr(VI)污染物溶液中对应值的2.35和3.84倍. 光催化染料分子降解和Cr(VI)还原之间存在显著增强的协同效应. 此外, 该双功能光催化剂在大规模光催化消除混合污染物方面也表现出较好的活性和稳定性. 理论计算表明, 铜掺杂和异质结工程促进了高效的光吸收、增高的载流子密度以及快速的光生载流子转移, 从而产生高效的协同光催化作用.这种双功能光催化剂的概念为大规模工业废水处理和净化开辟了新途径.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (60)
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