分层硫化铜-碳纳米管 (CuS-CNT) 复合材料的开发，并利用其卓越的载流子迁移率在可见光下实现罗丹明 B 光降解的有效电荷传输,Nanoscale Advances

当前位置： X-MOL 学术 › Nanoscale Adv. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

分层硫化铜-碳纳米管 (CuS-CNT) 复合材料的开发，并利用其卓越的载流子迁移率在可见光下实现罗丹明 B 光降解的有效电荷传输
Nanoscale Advances ( IF 4.6 ) Pub Date : 2023-05-31 , DOI: 10.1039/d3na00204g
Mainak Das ₁ , Dhananjoy Das ₁ , Sayantan Sil ₂ , Partha Pratim Ray ₁

Affiliation

在这项工作中，报道了通过溶剂热技术合成可见光敏感的硫化铜（CuS）纳米颗粒及其与碳纳米管（T-CuS）的复合材料。通过粉末 X 射线衍射 (PXRD)、扫描电子显微镜、透射电子显微镜、X 射线光电子能谱、紫外可见光谱、光致发光 (PL) 光谱和热重分析对合成的纳米颗粒 (NP) 及其复合材料进行了显着表征。热分析）。研究了碳纳米管（CNT）对CuS结晶度、微观结构、光吸收、光激发、热稳定性和表面积的影响。电流-电压（I 与 V测量了基于 CuS 和 T-CuS 的肖特基二极管的特性，以确定电荷传输参数，如光敏性、电导率、载流子迁移率和传输时间。使用太阳模拟器研究了裸 CuS 和 T-CuS 在罗丹明 B 染料分解中的光催化性能。与裸 CuS (58%) 相比，T-CuS 复合材料表现出更高的光催化活性 (94%)。解释了载流子迁移率在通过复杂的复合材料网络传输光生电荷（空穴和电子）以及促进光降解过程中的重要性。最后，还确定了导致罗丹明 B 降解的活性物质。

"点击查看英文标题和摘要"

Development of hierarchical copper sulfide–carbon nanotube (CuS–CNT) composites and utilization of their superior carrier mobility in efficient charge transport towards photodegradation of Rhodamine B under visible light

In this work, the synthesis of visible light sensitive copper sulfide (CuS) nanoparticles and their composites with carbon nanotubes (T-CuS) via a solvothermal technique is reported. The synthesized nanoparticles (NPs) and their composites were significantly characterized by powder X-ray diffraction (PXRD), scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis spectroscopy, photoluminescence (PL) spectroscopy and thermogravimetric analysis (TGA). The effect of carbon nanotubes (CNTs) on the crystallinity, microstructures, photo-absorption, photo-excitation, thermal stability and surface area of CuS was investigated. The current–voltage (I vs. V) characteristics of both CuS and T-CuS based Schottky diodes were measured to determine the charge transport parameters like photosensitivity, conductivity, mobility of charge carriers, and transit time. The photocatalytic performance of bare CuS and T-CuS in the decomposition of Rhodamine B dye was studied using a solar simulator. The T-CuS composite showed higher photocatalytic activity (94%) compared to bare CuS (58%). The significance of charge carrier mobility in transferring photo-induced charges (holes and electrons) through complex networks of composites and facilitating the photodegradation process is explained. Finally, the reactive species responsible for the Rhodamine B degradation were also identified.

更新日期：2023-05-31

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文