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Microwave-Assisted Synthesis of CdS-MOF MIL-101 (Fe) Composite: Characterization and Photocatalytic Performance
Armando Ramos Corona1, Jorge Rodríguez López2, Ricardo Rangel Segura3
1Investigador Posdoctoral por México, Departamento de Física Aplicada, Cinvestav-Unidad Mérida, Carretera Antigua a Progreso Km. 6, Mérida, Yucatán 97310, México.
Inorganic Chemistry
|October 7, 2024
Summary
This study synthesizes cadmium sulfide-metal-organic framework (CdS-MOF) MIL-101 (Fe) heterojunctions for efficient photocatalytic degradation of methylene blue. The novel material shows excellent stability and reusability for wastewater treatment.
Area of Science:
- Materials Science
- Environmental Chemistry
- Nanotechnology
Background:
- Developing efficient photocatalysts is crucial for addressing environmental pollution.
- Metal-organic frameworks (MOFs) offer tunable structures for catalytic applications.
- Cadmium sulfide (CdS) is a known semiconductor photocatalyst but suffers from recombination issues.
Purpose of the Study:
- To synthesize novel CdS-MOF MIL-101 (Fe) heterojunctions.
- To evaluate their photocatalytic activity for methylene blue (MB) degradation.
- To investigate the underlying mechanisms of enhanced photocatalysis.
Main Methods:
- Microwave-assisted synthesis of CdS-MOF MIL-101 (Fe) heterojunctions.
- Characterization using XRD, SEM, XPS, UV-vis, Raman, FTIR, and EIS.
- Photocatalytic degradation experiments of MB under UV and visible light.
Main Results:
- Successfully synthesized CdS-MOF MIL-101 (Fe) heterojunctions with varying ratios.
- Demonstrated enhanced electron-hole pair separation and suppressed recombination due to type I band structure.
- Achieved complete MB degradation within 30 minutes with excellent stability and reusability over four cycles.
Conclusions:
- CdS-MOF MIL-101 (Fe) heterojunctions are highly effective photocatalysts for organic pollutant degradation.
- The synthesized materials offer a promising solution for wastewater treatment.
- The study highlights the potential of MOF-based heterojunctions in environmental remediation.
