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Communication

SiO2@Fe(III)-Based Metal–Organic Framework Core–Shell Microspheres for Water-Purification-Based Photo-Fenton Processes

by
Kaihong Liu
,
Yuanli Zhu
,
Tanyu Cheng
,
Guohua Liu
* and
Chunxia Tan
*
Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Catalysts 2025, 15(1), 23; https://doi.org/10.3390/catal15010023
Submission received: 14 November 2024 / Revised: 10 December 2024 / Accepted: 13 December 2024 / Published: 30 December 2024
(This article belongs to the Special Issue Catalysis on Zeolites and Zeolite-Like Materials, 3rd Edition)

Abstract

In this study, SiO2@MIL-88A(Fe) core–shell microspheres were successfully synthesized through a simple immobilization method for dye degradation via an MIL-88A(Fe)-mediated Fenton-like process. These microspheres were fabricated by in situ immobilizing MIL-88A(Fe) onto mesoporous organosilane spheres functionalized with -COOH groups. Structural analyses and characterizations confirmed the formation of well-defined MOF particles anchored on the silicate microspheres, with electron microscopy verifying their porous core–shell structure. The newly developed core–shell materials achieved a high degree of dye degradation, reaching up to 96% for 10 mg/L dye solutions in neutral aqueous conditions within 30 min at room temperature through the Fenton-like process. Furthermore, SiO2@MIL-88A(Fe) exhibited excellent stability and recyclability, maintaining its performance over at least seven reuse cycles with minimal loss of activity. This material is easy to synthesize as well as cost-effective and demonstrates significant potential for wastewater purification involving a range of four different dyes.
Keywords: MOFs; core–shell microspheres; photo-Fenton process MOFs; core–shell microspheres; photo-Fenton process

Share and Cite

MDPI and ACS Style

Liu, K.; Zhu, Y.; Cheng, T.; Liu, G.; Tan, C. SiO2@Fe(III)-Based Metal–Organic Framework Core–Shell Microspheres for Water-Purification-Based Photo-Fenton Processes. Catalysts 2025, 15, 23. https://doi.org/10.3390/catal15010023

AMA Style

Liu K, Zhu Y, Cheng T, Liu G, Tan C. SiO2@Fe(III)-Based Metal–Organic Framework Core–Shell Microspheres for Water-Purification-Based Photo-Fenton Processes. Catalysts. 2025; 15(1):23. https://doi.org/10.3390/catal15010023

Chicago/Turabian Style

Liu, Kaihong, Yuanli Zhu, Tanyu Cheng, Guohua Liu, and Chunxia Tan. 2025. "SiO2@Fe(III)-Based Metal–Organic Framework Core–Shell Microspheres for Water-Purification-Based Photo-Fenton Processes" Catalysts 15, no. 1: 23. https://doi.org/10.3390/catal15010023

APA Style

Liu, K., Zhu, Y., Cheng, T., Liu, G., & Tan, C. (2025). SiO2@Fe(III)-Based Metal–Organic Framework Core–Shell Microspheres for Water-Purification-Based Photo-Fenton Processes. Catalysts, 15(1), 23. https://doi.org/10.3390/catal15010023

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