Enhanced visible-light photocatalytic activity of perylene diimide (PDI) supramolecular nanorods with Pt QDs deposited in situ.
Enhanced visible-light photocatalytic activity of perylene diimide (PDI) supramolecular nanorods with Pt QDs deposited in situ.
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DOI：
10.1039/d0dt04356g
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发表时间：
2021-03
影响因子：
4
通讯作者：
Di Liu;Liping Chen;Wenbin Chen;Mengtao Qin;Siqi Wei
中科院分区：
文献类型：
--
作者：
Di Liu;Liping Chen;Wenbin Chen;Mengtao Qin;Siqi Wei
分散良好的Pt量子点（QD）是第一个成功地沉积到PDI超分子纳米棒表面通过一个简单的原位化学还原。在可见光照射下，Pt QDs/PDI复合材料对苯酚的降解表现出良好的光催化性能。发现最佳的1 wt% Pt QD/PDI复合物的降解速率常数（k）是纯PDI超分子纳米棒的6.2倍。增强的光催化性能可以归因于光生载流子的快速转移和有效分离，源于Pt量子点对电子的有效捕获和传输。同时，Pt量子点也被负载作为光催化反应过程中的活性位点。此外，1 wt%的Pt量子点/PDI复合材料被发现有较高的光催化稳定性和循环利用率，表明其在水环境净化领域的巨大潜力。
Well-dispersed Pt quantum dots (QDs) were the first to be successfully deposited onto a PDI supramolecular nanorods surface via a simple in situ chemical reduction. Under visible light irradiation, Pt QDs/PDI composites displayed excellent photocatalytic property in the degradation of phenol. The optimum 1 wt% Pt QDs/PDI composite was found to be 6.2 times greater than pure PDI supramolecular nanorods for the degradation rate constant (k). The enhanced photocatalytic performance can be attributed to the rapid transfer and efficient separation of photogenerated carriers, originating from the effective trapping and transporting of electrons by Pt QDs. At the same time, Pt QDs were also loaded as active sites during the photocatalytic reaction. Moreover, the 1 wt% Pt QDs/PDI composite was found to have high photocatalytic stability and cycle utilization, suggesting its great potential in the area of water environmental purification.