{"title":"Preparation of Co3O4/BiOCl composite material for photocatalytic degradation of trinitrotoluene wastewater","authors":"Xiyang Zhou, Jiayi Liu, Jiaji Sun","doi":"10.1007/s42114-024-01056-5","DOIUrl":null,"url":null,"abstract":"<div><p>The aim of this paper is to improve the photocatalytic ability of pure BiOCl by a composite approach to solve the problem of degradation of trinitrotoluene (TNT) wastewater, which is difficult to degrade. Co<sub>3</sub>O<sub>4</sub>/BiOCl composite photocatalysts were successfully and efficiently synthesized using a combination of hydrothermal and calcination methods. The Co<sub>3</sub>O<sub>4</sub>/BiOCl composites were characterized, tested, and investigated by various complex techniques. Then, the high photocatalytic performance of the material was determined by its efficiency in degrading simulated TNT wastewater under visible light. From the above data, the possible degradation mechanism of the material in the photocatalytic system was deduced. The experimental results showed that the composite of Co<sub>3</sub>O<sub>4</sub> significantly enhanced the photocatalytic performance of BiOCl and improved the efficiency of the composites in degrading TNT wastewater under visible light. In particular, the 0.05CoBi composite exhibited optimal degradation performance, reaching a 92% degradation efficiency of the TNT wastewater within 3 h. The composite was also found to be highly efficient in the degradation of TNT wastewater. After three consecutive photocatalytic degradation cycles, the 0.05CoBi composite maintained 80% degradation efficiency. In addition, radical trapping experiments showed that O<sub>2</sub><sup>−</sup> plays a major role, followed by h<sup>+</sup>, in the degradation of TNT wastewater by 0.05CoBi. From our experiments, we propose a photocatalytic mechanism for this material.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":null,"pages":null},"PeriodicalIF":23.2000,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Composites and Hybrid Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s42114-024-01056-5","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
引用次数: 0
Abstract
The aim of this paper is to improve the photocatalytic ability of pure BiOCl by a composite approach to solve the problem of degradation of trinitrotoluene (TNT) wastewater, which is difficult to degrade. Co3O4/BiOCl composite photocatalysts were successfully and efficiently synthesized using a combination of hydrothermal and calcination methods. The Co3O4/BiOCl composites were characterized, tested, and investigated by various complex techniques. Then, the high photocatalytic performance of the material was determined by its efficiency in degrading simulated TNT wastewater under visible light. From the above data, the possible degradation mechanism of the material in the photocatalytic system was deduced. The experimental results showed that the composite of Co3O4 significantly enhanced the photocatalytic performance of BiOCl and improved the efficiency of the composites in degrading TNT wastewater under visible light. In particular, the 0.05CoBi composite exhibited optimal degradation performance, reaching a 92% degradation efficiency of the TNT wastewater within 3 h. The composite was also found to be highly efficient in the degradation of TNT wastewater. After three consecutive photocatalytic degradation cycles, the 0.05CoBi composite maintained 80% degradation efficiency. In addition, radical trapping experiments showed that O2− plays a major role, followed by h+, in the degradation of TNT wastewater by 0.05CoBi. From our experiments, we propose a photocatalytic mechanism for this material.
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.