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简便合成具有优异可见光光催化活性用于去除NO的三元g-CN@BiOCl/BiOCl复合材料

Facile Synthesis of Ternary g-CN@BiOCl/BiOCl Composites With Excellent Visible Light Photocatalytic Activity for NO Removal.

作者信息

Zhang Wendong, Liang Yi

机构信息

Chongqing Key Laboratory of Inorganic Functional Materials, Department of Scientific Research Management, Chongqing Normal University, Chongqing, China.

出版信息

Front Chem. 2019 Apr 11;7:231. doi: 10.3389/fchem.2019.00231. eCollection 2019.

DOI:10.3389/fchem.2019.00231
PMID:31032250
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6470255/
Abstract

In this study, novel two-dimensional (2D) g-CN@BiOCl/BiOCl composites have been fabricated through a facile deposition-precipitation process. The as-prepared photocatalysts were characterized by XRD, SEM, TEM, XPS, UV-vis DRS, PL, Photocurrent, EIS, ESR, and N adsorption-desorption. The photocatalytic activities were investigated through NO removal test in gas under visible light irradiation (λ > 420 nm). The g-CN@BiOCl/BiOCl composites exhibit enhanced visible light absorption and photo-induced electron-hole separation efficiency, compared with pristine g-CN and BiOCl/BiOCl. The intimated contact interfaces between g-CN and BiOCl/BiOCl nanosheets are responsible for the more efficient photochemical interactions. The present work provides a new direction to develop a class of ternary g-CN-based visible-light-driven photocatalysts for environmental purification.

摘要

在本研究中，通过简便的沉积沉淀法制备了新型二维（2D）g-CN@BiOCl/BiOCl复合材料。采用XRD、SEM、TEM、XPS、UV-vis DRS、PL、光电流、EIS、ESR和N吸附-脱附等手段对所制备的光催化剂进行了表征。通过在可见光照射（λ>420 nm）下的气体中NO去除试验研究了光催化活性。与原始g-CN和BiOCl/BiOCl相比，g-CN@BiOCl/BiOCl复合材料表现出增强的可见光吸收和光生电子-空穴分离效率。g-CN与BiOCl/BiOCl纳米片之间紧密的接触界面导致了更有效的光化学相互作用。本工作为开发一类用于环境净化的基于g-CN的三元可见光驱动光催化剂提供了新的方向。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1bde/6470255/fb303c53e777/fchem-07-00231-g0011.jpg
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