ZIF-67/ c掺杂TiO2异质结促进新污染物光催化分解

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-05-02 DOI:10.1016/j.matlet.2025.138681

Saad H. Ammar , Israa Sh. Mohammed , Huda D. Abdulkader , Zaid H. Jabbar , Duaa J. Kadhim

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引用次数: 0

摘要

在此，我们分别制备了碳掺杂TiO2和co基沸石咪唑盐框架（ZIF-67）；然后将它们结合在一起，获得可见光诱导降解孔雀石绿（MG）的高效异质结。值得注意的是，40 wt%-ZIF-67/C-TiO2杂化物在45 min的可见光照射下具有优异的光催化活性（96.8%），与裸C-TiO2相比提高了6.5倍。结果表明，C-TiO2具有增强的可见光捕获能力。ZIF-67与C-TiO2之间形成的z型异质结是光电荷载流子大量分离的原因。此外，•O2−和•OH是关键的反应种。第五轮结束时，ZIF-67/C-TiO2异质结的光催化降解率仍达到93.2%，表明合成的ZIF-67/C-TiO2异质结具有较高的耐久性。

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ZIF-67/C-doped TiO2 heterojunctions for prompted photocatalytic decomposition of emerging pollutants

Herein, we fabricated carbon-doped TiO₂ and Co-based zeolitic imidazolate framework (ZIF-67) separately; then combined them to achieve efficient heterojunctions for visible-light-induced degradation of Malachite Green (MG). Notably, 40 wt%-ZIF-67/C-TiO₂ hybrid endorsed superior photocatalytic activity (96.8 %) under 45 min visible-light irradiation, which compared to bare C-TiO₂ was 6.5-times improvement. The results showed that C-TiO₂ exhibits enhanced visible light harvesting. The developed Z-type heterojunction between ZIF-67 and C-TiO₂ was behind the large separation of photocharge carriers. Furthermore, ^•O₂⁻ and ^•OH species act as the key reactive species. The photocatalytic degradation of 93.2 % was still reached at the end of the fifth round, demonstrating high durability of synthesized ZIF-67/C-TiO₂ heterojunction.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive