A novel polydopamine-coated bacterial cellulose/g-C₃N₄ membrane for highly efficient photocatalytic degradation of methylene blue.

IF 7.7 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

International Journal of Biological Macromolecules Pub Date : 2024-11-15 DOI:10.1016/j.ijbiomac.2024.137738

Piti Charurungsipong, Bhumin Than-Ardna, Hathaikarn Manuspiya

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引用次数: 0

Abstract

Photocatalytic oxidation emerges as an eco-friendly approach for chemically degrading water-borne organic pollutants. Establishing a more sustainable process for synthesizing photocatalyst membranes with higher efficiency and reusability is crucial for advancing safe water remediation solutions. In this study, we present a novel photocatalytic membrane incorporating bacterial cellulose (BC), a naturally occurring biopolymer with an intricate fibrous network, and graphitic carbon nitride (g-C₃N₄), a visible light-responsive non-metal photocatalyst. The composite membrane is augmented with a coating of polydopamine (PDA), an amorphous polymeric layer derived from dopamine to enhance light absorption and reduce photoexcited charge recombination. The BC/g-C₃N₄/PDA membrane demonstrates a substantial improvement in methylene blue removal efficiency, up to 95.39 % within 150 min of irradiation. Moreover, the PDA-modified membrane exhibits noteworthy recyclability, retaining significant photodegradation ability for up to three cycles. This method offers an accessible and scalable approach to fabricating a highly effective photocatalyst composite membrane suitable for industrial applications.

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用于高效光催化降解亚甲基蓝的新型多巴胺包覆细菌纤维素/g-C3N4 膜。

光催化氧化是一种化学降解水体有机污染物的环保方法。建立一种更可持续的工艺来合成具有更高效率和可重复使用性的光催化剂膜，对于推进安全的水修复解决方案至关重要。在这项研究中，我们提出了一种新型光催化膜，其中包含细菌纤维素（BC）和石墨氮化碳（g-C3N4），前者是一种天然生物聚合物，具有复杂的纤维网络，后者则是一种可见光响应型非金属光催化剂。复合膜上还添加了聚多巴胺（PDA）涂层，这是一种从多巴胺中提取的无定形聚合物层，可增强光吸收并减少光激发电荷重组。BC/g-C3N4/PDA 膜大大提高了亚甲基蓝的去除效率，在 150 分钟的辐照时间内，去除率高达 95.39%。此外，PDA 改性膜还具有显著的可回收性，在长达三个周期内仍能保持明显的光降解能力。这种方法为制造适合工业应用的高效光催化剂复合膜提供了一种简便易行、可扩展的方法。

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

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.