Carbon-doped flower-like Bi2WO6 decorated carbon nanosphere nanocomposites with enhanced visible light photocatalytic degradation of tetracycline

IF 21.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2023-01-25 DOI:10.1007/s42114-022-00616-x

Xiaona Jiang, Shuai Chen, Xinrui Zhang, Lanni Qu, Houjuan Qi, Bin Wang, Benbin Xu, Zhanhua Huang

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引用次数: 16

Abstract

In search of a recyclable catalyst with synergistic adsorption and photocatalysis, unique composite photocatalysts of flower-like bismuth tungstate (Bi₂WO₆) and carbon nanospheres (CSs) were composited using a hydrothermal synthesis method (named CSs-Bi₂WO₆). Notably, based on the high visible light utilization and a reasonable band gap (2.53 eV), CSs-Bi₂WO₆ have good photocatalytic properties. For example, the composite with an optimized ratio (2% CSs-Bi₂WO₆) showed good adsorption and photocatalytic performance. Under simulated natural light conditions, the degradation rate of tetracycline (TC) by 2% CSs-Bi₂WO₆ was 84.6% in 60 min, which is nearly 25% higher than pure Bi₂WO₆. After five cycles, the observed barely decreased TC degradation rate of 2% CSs-Bi₂WO₆ confirmed the high cyclability and reproducibility of the photocatalyst. The total organic carbon estimation of the post-degradation reaction medium corresponded to 68.2% mineralization. Furthermore, we determined the photocatalytic reaction path by LC–MS, which confirmed that the composite catalyst could effectively degrade TC molecules into small molecules. It can be concluded that the catalyst has a broad application prospect in the field of wastewater treatment.

Graphical Abstract

Carbon-doped Bi₂WO₆ composite catalyst was used to degrade TC in wastewater efficiently

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碳掺杂花状Bi2WO6修饰碳纳米球纳米复合材料增强可见光催化降解四环素

为了寻找具有协同吸附和光催化作用的可回收催化剂，采用水热合成方法合成了独特的花状钨酸铋(Bi2WO6)与碳纳米球(CSs)复合光催化剂(命名为CSs-Bi2WO6)。值得注意的是，基于高可见光利用率和合理的带隙(2.53 eV)， CSs-Bi2WO6具有良好的光催化性能。例如，优化配比(2% CSs-Bi2WO6)的复合材料具有良好的吸附和光催化性能。在模拟自然光条件下，2% CSs-Bi2WO6在60 min内对四环素(TC)的降解率为84.6%，比纯Bi2WO6高近25%。经过5次循环后，观察到2% CSs-Bi2WO6的TC降解率几乎没有下降，证实了光催化剂的高循环性和可重复性。降解后反应介质的总有机碳估算值对应于68.2%的矿化。此外，我们通过LC-MS确定了光催化反应路径，证实了复合催化剂可以有效地将TC分子降解为小分子。由此可见，该催化剂在污水处理领域具有广阔的应用前景。摘要采用掺杂碳的Bi2WO6复合催化剂对废水中的TC进行了高效降解

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.