化学
催化作用
聚吡咯
兴奋剂
电化学
纳米复合材料
化学工程
杂原子
纳米技术
电极
材料科学
光电子学
有机化学
物理化学
戒指(化学)
工程类
作者
Yun-Xiang Ci,Peiyu Li,Jing Zheng,Linyu Zhu,Han Lv,Min Zhang,Xue‐Bo Yin
标识
DOI:10.1021/acs.inorgchem.3c03722
摘要
Heteroatom doping is considered an effective way to enhance the catalytic activity of MoS2 nanosheets (NSs). In the paper, dual-metal doping was proposed to incorporate Fe and Co into hierarchical MoS2 ultrathin NSs, which grew directly on polypyrrole microtubes (Fe, Co–MoS2@PPy), for the enhanced enzyme-like catalytic reaction. The particular hollow tubular structure realized effective electron transfer. The doped Fe and Co tuned the electronic architecture of the MoS2 NSs to enhance the enzyme-like catalytic activity. The abundant exposed void spaces facilitated ion diffusion/penetration between the PPy interlayer and Fe–Co doped MoS2 shell, leading to heterostructured synergistic effects. Therefore, the synthesized Fe and Co–MoS2@PPy composites showed remarkable catalytic activity. The high catalytic efficiency of Fe and Co–MoS2@PPy was confirmed with the reaction of tetramethylbenzidine (TMB) and H2O2 for visible detection. The blue color disappeared after adding glutathione (GSH). Thus, this procedure was used as a convenient way to detect GSH with a detection limit of 0.76 μM. The dual-metal-doped strategy was confirmed to improve the performance of MoS2 nanocomposites and could be used as a promising matrix for other applications, such as electrochemical energy conversion, medical diagnosis, and others.
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