3d打印cqd增强铜复合材料：制备及其光催化特性

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-07-08 DOI:10.1016/j.physb.2025.417593

Han Lai, Wenwen Sun, Yang Zhao, Xin Ban, Jiamu Li, Aijia Sun, Huayi Li, Zhengchun Yang, Peng Pan, Jie He, Rui Zhang

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引用次数: 0

摘要

在这项研究中，我们通过直写3D打印制备了碳量子点（CQD）修饰的Cu/CuxO杂化光催化剂。表征证实CQD在材料表面均匀分散。CQD-Cu/CuxO复合材料表现出优异的光催化活性，在可见光下150 min内降解了94.1%的甲基橙（MO）（吸光度下降：1.2669→0.0742），显著优于无cqd的复合材料（降解率为62.3%），提高了31.8%。这种改善源于协同机制：(1)CQDs扩大可见光吸收并促进光生电荷分离以提高量子效率；(2)CQDs的芳香结构与MO之间的π-π相互作用增强了染料吸附。3d打印的催化剂在四次重复使用循环中保持了80.8%的效率，展示了卓越的可回收性，同时减轻了可回收性挑战和二次污染风险。这项工作开创了3d打印铜基复合材料的CQD集成，用于可持续的高性能光催化废水处理。

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3D-printed CQD-reinforced copper composites: Preparation and photocatalytic characteristics

In this study, we fabricated carbon quantum dot (CQD)-modified Cu/Cu_xO hybrid photocatalysts via direct-writing 3D printing. Characterization confirmed uniform CQD dispersion on the material surface. The CQD-Cu/Cu_xO composite exhibited exceptional photocatalytic activity, degrading 94.1 % of methyl orange (MO) within 150 min (absorbance drop: 1.2669 → 0.0742) under visible light—significantly outperforming the CQD-free counterpart (62.3 % degradation) with a 31.8 % enhancement. This improvement stems from synergistic mechanisms: (1) CQDs broaden visible-light absorption and promote photogenerated charge separation to boost quantum efficiency, and (2) π-π interactions between CQDs’ aromatic structure and MO enhance dye adsorption. The 3D-printed catalyst retained 80.8 % efficiency over four reuse cycles, demonstrating superior recoverability while mitigating recyclability challenges and secondary pollution risks. This work pioneers CQD integration in 3D-printed Cu-based composites for sustainable, high-performance photocatalytic wastewater treatment.

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces