Effective binding of MOF and TiO2 particles: A novel composite material capable of rapidly methylene blue

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-03-21 DOI:10.1016/j.coco.2025.102359

Shengyang Zheng , Wei Yu , Xinyi Zhang , Xin Wang , Haitao Zhao , Lijun Meng

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引用次数: 0

Abstract

This study fabricated a novel MIL-88A/TiO₂ composite photo-Fenton catalyst through a one-step hydrothermal method for efficient degradation of Methylene Blue (MB) in organic dye wastewater. MIL-88A, leveraging its visible-light responsiveness and high specific surface area, significantly enhanced the composite material's light absorption range (extended to 600 nm) and photogenerated charge separation efficiency when composited with TiO₂. Characterizations via XRD, FTIR, SEM, and XPS confirmed the successful combination of TiO₂ and MIL-88A in the composite. The conduction band potential (−0.59 eV) and valence band potential (1.88 eV) of MIL-88A/TiO₂ were well-matched, promoting efficient separation of electron-hole pairs. Photo-Fenton experiments revealed that under pH 3.0 and 5 mM H₂O₂ dosage, the composite could completely degrade 50 mg/L MB solution within 10 min, with degradation efficiency significantly superior to single components. Radical trapping experiments and ESR analysis indicated that hydroxyl radical(OH) and electrons (e−) were the dominant active species, and the reaction mechanism involved photo-generated electron-driven Fe³⁺/Fe²⁺ redox cycling and H₂O₂ decomposition to produce reactive radicals. In addition, the material maintained a degradation efficiency of over 95 % after five cycles and exhibited good structural stability. The stable performance of MIL-88A/TiO₂ in a wide pH range (3.0–9.0) and in the actual environment with co-existing ions further highlights its application potential. This study provides new insights into the development of efficient and stable photo-Fenton catalytic materials.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.