The harmless treatment of printing and dyeing wastewater by magnetic composite photocatalytic material BiOCl/SrFe12O19

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Environmental Technology & Innovation Pub Date : 2024-09-02 DOI:10.1016/j.eti.2024.103810

Lei Feng , Junming Liu , Haiyi Wang , Dan Yang , Chaodi Zhang , Huasen Guo , Hailong Wang

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Abstract

A variety of technologies have been used to solve the problems of deep chromaticity, high concentration of organic matter and complex composition of printing and dyeing wastewater, but no major breakthrough has been made in general. Photocatalytic technology shows great advantages in wastewater treatment, and the development of strong oxidizing photocatalytic materials has potential application value. In this study, BiOCl/SrFe₁₂O₁₉ magnetic composite photocatalysts with various ratios of components were prepared using a hydrothermal method. The structure of the photocatalyst was characterized by XRD, PL, EIS and XPS. The photocatalytic performance of the composite sample was evaluated by RhB degradation experiment. The results showed that the optimum sample BiSr-10 had a degradation rate of 99.24 % for RhB, indicating excellent photocatalytic performance. The successful combination of SrFe₁₂O₁₉ and BiOCl facilitated to improve the photodegradation efficiency of RhB by composite photocatalytic materials. And the photocatalytic efficiency for RhB remained close to 82.8 % after five cycles of stability experiments. Analysis of the possible photocatalytic mechanism was based on the aforementioned results. In summary, the prepared BiOCl/SrFe₁₂O₁₉ composite photocatalytic material will bring a new breakthrough for wastewater treatment.

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磁性复合光催化材料 BiOCl/SrFe12O19 对印染废水的无害化处理

为解决印染废水色度深、有机物浓度高、成分复杂等问题，人们采用了多种技术，但总体上尚未取得重大突破。光催化技术在废水处理中显示出巨大的优势，强氧化性光催化材料的开发具有潜在的应用价值。本研究采用水热法制备了不同配比的 BiOCl/SrFe12O19 磁性复合光催化剂。通过 XRD、PL、EIS 和 XPS 对光催化剂的结构进行了表征。通过 RhB 降解实验评估了复合样品的光催化性能。结果表明，最佳样品 BiSr-10 对 RhB 的降解率为 99.24%，表明其具有优异的光催化性能。SrFe12O19 与 BiOCl 的成功结合有助于提高复合光催化材料对 RhB 的光降解效率。经过五个周期的稳定性实验后，RhB 的光催化效率仍接近 82.8%。根据上述结果分析了可能的光催化机理。总之，所制备的 BiOCl/SrFe12O19 复合光催化材料将为废水处理带来新的突破。

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来源期刊

Environmental Technology & Innovation Environmental Science-General Environmental Science

CiteScore

14.00

自引率

4.20%

发文量

435

审稿时长

74 days

期刊介绍： Environmental Technology & Innovation adopts a challenge-oriented approach to solutions by integrating natural sciences to promote a sustainable future. The journal aims to foster the creation and development of innovative products, technologies, and ideas that enhance the environment, with impacts across soil, air, water, and food in rural and urban areas. As a platform for disseminating scientific evidence for environmental protection and sustainable development, the journal emphasizes fundamental science, methodologies, tools, techniques, and policy considerations. It emphasizes the importance of science and technology in environmental benefits, including smarter, cleaner technologies for environmental protection, more efficient resource processing methods, and the evidence supporting their effectiveness.