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首页> 外文期刊>RSC Advances >Novel Bi2O2CO3/polypyrrole/g-C3N4 nanocomposites with efficient photocatalytic and nonlinear optical properties
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Novel Bi2O2CO3/polypyrrole/g-C3N4 nanocomposites with efficient photocatalytic and nonlinear optical properties

机译：新型Bi 2 O 2 CO 3 /聚吡咯/ gC 3 N 4 纳米复合材料具有高效的光催化和非线性光学特性

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Semiconductor nanostructures perform wide applications in light-driven physical and chemical processes; in particular, nanomaterials based on Bi2O2CO3 with tunable photophysical properties have attracted intense interest. However, the nonlinear optical properties and photocatalytic performances of the ternary system Bi2O2CO3/polypyrrole/g-C3N4 have not been reported. In this paper, a series of novel Bi2O2CO3/polypyrrole/g-C3N4 nanocomposites loaded with different g-C3N4 contents was prepared to maximize the photocatalytic activity and optical nonlinearity. The structure, composition and morphology of the as-prepared samples were characterized by Fourier-transform infrared spectroscopy, X-ray powder diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy. The wide absorption of the samples in the visible light region makes them suitable for photocatalytic and nonlinear transmission studies. Their photocatalytic performances were evaluated by degradation of rhodamine B. The associated photocatalytic activity of Bi2O2CO3/polypyrrole/g-C3N4 nanocomposites is shown to be dependent on the g-C3N4 loading. Compared to Bi2O2CO3, PPy, g-C3N4, BP and B/C0.5, the BP/C0.5 composite with 0.5 wt% g-C3N4 exhibits the highest photocatalytic activity. The nonlinear optical properties were investigated by open-aperture Z-scan measurements at 532 nm with 4 ns laser pulses. The results demonstrated that the BP/C0.5 composite exhibited improved properties for photocatalysis and optical nonlinearity, which is ascribed to a combination of mechanisms.
机译：半导体纳米结构在光驱动的物理和化学过程中具有广泛的应用。特别是基于Bi 2 O 2 CO 3 的纳米材料具有可调光物理性质的引起了人们的极大兴趣。然而，三元体系Bi 2 O 2 CO <的非线性光学性质和光催化性能没有报告sub> 3 / polypyrrole / gC 3 N 4 。本文研究了一系列新颖的Bi 2 O 2 CO 3 / polypyrrole / gC 3 N 4 纳米复合材料，其中装载了不同的gC <制备sub> 3 N 4 的含量可最大程度地提高光催化活性和光学非线性。通过傅立叶变换红外光谱，X射线粉末衍射，透射电子显微镜，X射线光电子能谱和拉曼光谱来表征所制备样品的结构，组成和形态。样品在可见光区域的广泛吸收使其适用于光催化和非线性透射研究。罗丹明B的降解对其光催化性能进行了评价。Bi 2 O 2 CO < small> 3 / polypyrrole / gC 3 N 4 纳米复合材料显示取决于gC 3 N 4 加载。与Bi 2 O 2 CO 3 的比较，PPy，gC 3 N 4 ，BP和B / C0.5，BP / C0.5 gC 3 N 4 含量为0.5 wt％的复合材料表现出最高的光催化活性。非线性光学特性是通过在4 ns激光脉冲下于532 nm处进行开孔Z扫描测量来研究的。结果表明，BP / C0.5复合材料表现出改善的光催化性能和光学非线性，这归因于多种机理。

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