Fabrication of metal-doped graphite phase carbon nitride-based membrane and its application

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2024-12-20 DOI:10.1007/s42114-024-01175-z

Wenbiao Zheng, Chengning Ye, Mingfeng Yu, Shujuan Yang, Yonghe Xiu, Xiaoxiao He, Hanyu Xue, Jianrong Xia, Renjin Gao, Zhanhui Yuan, Liwei Wang

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Abstract

Metal-doped (Cu, Zn, Mn) g-C₃N₄ was synthesized by a simple high-temperature process, followed by the insertion of one-dimensional nanofibrillar cellulose (CNF) into the two-dimensional g-C₃N_4. Photocatalytic composite membranes were then prepared using a vacuum-assisted filtration method. A series of characterization techniques, including XRD, SEM, FT-IR, and UV–vis DRS, were employed to systematically analyze the microstructure, chemical composition, and physicochemical properties of the designed g-C₃N₄/CNF composite membranes. The results indicated that the visible photocatalytic activity of the metal-doped photocatalysts was enhanced, which is beneficial for pollutant degradation by reducing the bandgap and extending the absorption of visible light. Notably, the composite membrane prepared with Mn-doped g-C₃N₄ demonstrated the highest photocatalytic performance in degrading rhodamine B dye, achieving a 42.6% degradation rate within 7 h. Additionally, the water flux and retention rate of the composite membranes were improved after metal doping, with Zn-doped g-C₃N₄ showing approximately six times the water flux of undoped g-C₃N₄, reaching a rate of 293.64 L·m⁻²·h⁻¹·bar⁻¹.

Graphic abstract

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掺金属石墨相氮化碳基膜的制作及其应用

采用简单的高温工艺合成了金属掺杂（Cu, Zn, Mn） g-C3N4，然后在二维g-C3N4中插入一维纳米纤维纤维素（CNF）。然后采用真空辅助过滤法制备光催化复合膜。采用XRD、SEM、FT-IR、UV-vis DRS等一系列表征技术，系统分析了所设计的g-C3N4/CNF复合膜的微观结构、化学组成和理化性能。结果表明，金属掺杂光催化剂的可见光催化活性增强，通过减小带隙和扩大可见光吸收，有利于污染物的降解。值得注意的是，mn掺杂g-C3N4制备的复合膜在降解罗丹明B染料方面表现出最高的光催化性能，在7 h内达到42.6%的降解率。此外，金属掺杂后的复合膜的水通量和保留率也有所提高，其中掺杂zn的g-C3N4的水通量约为未掺杂g-C3N4的6倍，达到293.64 L·m−2·h−1·bar−1。图形抽象

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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.