Visible photoactivity and antiphotocorrosion performance of CdS photocatalysts by the hybridization of N-substituted carboxyl group polyaniline
Visible photoactivity and antiphotocorrosion performance of CdS photocatalysts by the hybridization of N-substituted carboxyl group polyaniline
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N-取代羧基聚苯胺杂化CdS光催化剂的可见光活性和抗光腐蚀性能
DOI：
10.1016/j.apsusc.2019.03.020
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发表时间：
2019
影响因子：
6.7
通讯作者：
Yang Shaoming
中科院分区：
文献类型：
--
作者：
Zhang Jiali;Fang Jiayu;Ye Xiaoai;Guo Zanru;Liu Yongxin;Song Qi;Zheng Shan;Chen Xi;Wang Shaohui;Yang Shaoming
在本文中，我们报道了由N-取代羧基聚苯胺（NPAN）镉前驱体制备的聚苯胺与羧基修饰相结合的CdS量子点（CdSQDs）的可见光催化活性和抗光腐蚀性能。罗丹明 B 的光电流响应和光降解实验表明，与 CdS 纳米颗粒和 NPAN 的机械共混物以及纯 CdS 纳米颗粒相比，CdSQDs/NPAN 杂化光催化剂具有更高的电流输出和光催化活性。增强的光催化性能可归因于CdSQDs和聚苯胺基质中的羧基之间的杂化效应。 CdSQDs/NPAN杂化物光催化氧化前后的TEM形貌和XRD图谱没有显着差异，表明聚苯胺中羧基的引入可以完全抑制CdS半导体的光腐蚀。根据实验结果提出了CdSQDs/NPAN杂化光催化剂的可能光催化机理。
In the paper, we report on the visible photocatalytic activity and antiphotocorrosion performance of CdS quantum dots (CdSQDs) by the combination of polyaniline with the modification of the carboxyl group, which was prepared by an N-substituted carboxyl group polyaniline (NPAN) cadmium precursor. The photocurrent response and photodegradation of Rhodamine B experiments show a higher current output and photocatalytic activity for the CdSQDs/NPAN hybrid photocatalysts in comparison with the mechanical blends of CdS nanoparticles and NPAN, as well as pure CdS nanoparticles. The enhanced photocatalytic performance could be attributed to the hybrid effect between CdSQDs and the carboxyl group in the polyaniline matrix. TEM morphology and XRD patterns of CdSQDs/NPAN hybrids had no significant differences before and after the photocatalytic oxidation, indicating that the incorporation of the carboxyl group in polyaniline could completely inhibit the photocorrosion of the CdS semiconductor. A possible photocatalytic mechanism of the CdSQDs/NPAN hybrid photocatalysts was proposed in accordance with the experimental results.