Unlocking Synergistic Photo-Fenton Catalysis with Magnetic SrFe12O19/g-C3N4 Heterojunction for Sustainable Oxytetracycline Degradation: Mechanisms and Applications DOI Creative Commons
Song Cui,

Yaocong Liu,

Xiaolong Dong

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(11), P. 833 - 833

Published: May 30, 2025

The widespread contamination of aquatic environments by tetracycline antibiotics (TCs) poses a substantial threat to public health and ecosystem stability. Although photo-Fenton processes have demonstrated remarkable efficacy in degrading TCs, their practical application is limited challenges associated with catalyst recyclability. This study reports the development novel magnetic recoverable SrFe12O19/g-C3N4 heterostructure photocatalyst synthesized via facile one-step co-calcination method using industrial-grade precursors. Comprehensive characterization revealed that nitrogen defects formation heterojunction structures significantly suppress electron (e−)–hole (h+) pair recombination, thereby markedly enhancing catalytic activity. optimized 7-SFO/CN composite removes over 90% oxytetracycline (OTC) within 60 min, achieving degradation rate constants 0.0393 min−1, which are 9.1 times higher than those SrFe12O19 (0.0043 min−1) 4.2 g-C3N4 (0.0094 min−1). effectively separated e− play three critical roles: (i) directly activating H2O2 generate ·OH radicals, (ii) promoting redox cycling Fe2+/Fe3+ ions, (iii) reducing dissolved oxygen form ·O2− species. Concurrently, h+ oxidize OTC molecules through surface-mediated reactions. Furthermore, exhibits exceptional operational stability applicability, offering transformative approach for scalable photocatalytic water treatment systems. work provides an effective strategy designing efficient photocatalysts environmental remediation.

Language: Английский

Flexible Solar Interfacial Evaporators with Photocatalytic Function for Purification of High-Salinity Organic Wastewater DOI Creative Commons
Yucheng Li, Xia Zhao, Tiandou Hu

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(8), P. 632 - 632

Published: April 21, 2025

Solar-driven interfacial water evaporation technology coupled with photocatalytic function is regarded as an emerging approach for treating high-salinity organic wastewater, but it remains challenging to design high-performance solar evaporators excellent properties. Here, we designed a two-dimensional flexible evaporator the purification of wastewater. The was prepared by deposition Cu-based metal frameworks (Cu-MOFs) onto polyester fabric solvothermal reaction, during which graphitic carbon nitride also deposited carried Cu-MOFs. achieves outstanding rate 1.95 kg m−2 h−1 simulated seawater (3.5 wt% NaCl) under 1 sun. shows efficient performance and salt resistance high-concentration saline due its transport capacity light absorption ability. Furthermore, ions pollutants can be simultaneously removed from wastewater synergistic effects adsorption, photothermal effect performance. This study successfully integrated solar-driven evaporation, extending multifunctionality

Language: Английский

Citations

0
Unlocking Synergistic Photo-Fenton Catalysis with Magnetic SrFe12O19/g-C3N4 Heterojunction for Sustainable Oxytetracycline Degradation: Mechanisms and Applications DOI Creative Commons
Song Cui,

Yaocong Liu,

Xiaolong Dong

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(11), P. 833 - 833

Published: May 30, 2025

The widespread contamination of aquatic environments by tetracycline antibiotics (TCs) poses a substantial threat to public health and ecosystem stability. Although photo-Fenton processes have demonstrated remarkable efficacy in degrading TCs, their practical application is limited challenges associated with catalyst recyclability. This study reports the development novel magnetic recoverable SrFe12O19/g-C3N4 heterostructure photocatalyst synthesized via facile one-step co-calcination method using industrial-grade precursors. Comprehensive characterization revealed that nitrogen defects formation heterojunction structures significantly suppress electron (e−)–hole (h+) pair recombination, thereby markedly enhancing catalytic activity. optimized 7-SFO/CN composite removes over 90% oxytetracycline (OTC) within 60 min, achieving degradation rate constants 0.0393 min−1, which are 9.1 times higher than those SrFe12O19 (0.0043 min−1) 4.2 g-C3N4 (0.0094 min−1). effectively separated e− play three critical roles: (i) directly activating H2O2 generate ·OH radicals, (ii) promoting redox cycling Fe2+/Fe3+ ions, (iii) reducing dissolved oxygen form ·O2− species. Concurrently, h+ oxidize OTC molecules through surface-mediated reactions. Furthermore, exhibits exceptional operational stability applicability, offering transformative approach for scalable photocatalytic water treatment systems. work provides an effective strategy designing efficient photocatalysts environmental remediation.

Language: Английский

Citations

0