Facile Synthesis of Ternary g-C3N4@BiOCl/Bi12O17Cl2 Composites With Excellent Visible Light Photocatalytic Activity for NO Removal

Facile Synthesis of Ternary g-C3N4@BiOCl/Bi12O17Cl2 Composites With Excellent Visible Light Photocatalytic Activity for NO Removal
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轻松合成三元 g-C3N4@BiOCl/Bi12O17Cl2 复合材料,具有优异的可见光光催化去除 NO 活性

DOI:
10.3389/fchem.2019.00231
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发表时间:
2019-04
影响因子:
5.5
通讯作者:
Liang Yi
Liang Yi
中科院分区:
化学3区
文献类型:
--
作者:
Zhang Wendong;Liang Yi

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在本研究中,新型二维(2D) g-C3N4@BiOCl/Bi12O17Cl2复合材料通过快速沉积-沉淀工艺制备。采用XRD、SEM、TEM、XPS、UV-vis DRS、PL、Photocurrent、EIS、ESR、N2吸附-脱附等手段对所制备的光催化剂进行了表征。在可见光(λ > 420 nm)照射下,通过对气体中NO的光催化活性进行研究。与原始g-C3N4和BiOCl/Bi12O17Cl2相比,g-C3N4@BiOCl/Bi12O17Cl2复合材料具有更高的可见光吸收和光诱导电子空穴分离效率。g-C3N4和BiOCl/Bi12O17Cl2纳米片之间的紧密接触界面是更有效的光化学相互作用的原因。本研究为开发一类基于g- c3n4的三元可见光环境净化光催化剂提供了新的方向。
In this study, novel two-dimensional (2D) g-C3N4@BiOCl/Bi12O17Cl2 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 N2 adsorption-desorption. The photocatalytic activities were investigated through NO removal test in gas under visible light irradiation (λ > 420 nm). The g-C3N4@BiOCl/Bi12O17Cl2 composites exhibit enhanced visible light absorption and photo-induced electron-hole separation efficiency, compared with pristine g-C3N4 and BiOCl/Bi12O17Cl2. The intimated contact interfaces between g-C3N4 and BiOCl/Bi12O17Cl2 nanosheets are responsible for the more efficient photochemical interactions. The present work provides a new direction to develop a class of ternary g-C3N4-based visible-light-driven photocatalysts for environmental purification.
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