4.7 Article

Superior photocatalytic and electrochemical activity of the MoSe2 modified ZIF-67 for the reduction and detection of Cr (VI)

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2023.111442

关键词

Z -Scheme; Photocatalytic reduction; Electrochemical detection; Electron Paramagnetic Resonance

向作者/读者索取更多资源

In this study, a novel Z-scheme-based MoSe2-modified ZIF-67 nanocomposite was synthesized and tested for environmental safety through electrochemical detection and photocatalytic reduction of hexavalent chromium. The nanocomposite showed superior photocatalytic reduction activity and high stability, and the enhanced recombination time and Z-scheme of the nanocomposite were confirmed. The combination of electrochemical sensing and photocatalytic reduction of Cr (VI) provides a reliable tool for wastewater management.
The removal and detection of heavy metals from wastewater have proven to be challenging due to the limitations of the materials and technologies. Therefore, in this work, we have synthesized novel Z-scheme-based MoSe2-modified ZIF-67 by a two-step method and tested it for environmental safety by electrochemical detection and photocatalytic reduction of carcinogenic heavy metal pollutant (hexavalent chromium (Cr (VI)). The nanosheets and polyhedrons-like morphology of MoSe2 and ZIF-67 were confirmed using Field emission scanning electron microscope (FESEM) and High-resolution transmission electron microscope (HRTEM), respectively. The nanocomposite exhibited superior activity for photocatalytic reduction (similar to 89% within 30 min) towards Cr (VI) along with the detection (LOD-0.01 mu M) with high stability. The superior activity of the MZ67 nanocomposite is attributed to enhanced recombination time (4.65 ns) with respect to pristine ZIF-67 (1.21 ns) as observed from time-correlated single photon counting (TCSPC) studies. The scavenger test and electron paramagnetic resonance (EPR) studies confirmed the Z-scheme of the nanocomposite. The electrochemical sensing for Cr (VI) combined with the photocatalytic reduction, tends to provide a trustworthy tool for wastewater management.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据