Synergistic Oxygen Vacancy and Dual‐Electron Centers for Enhancing Peroxymonosulfate Activation by Fe─Mn─Mg LDH/BC: Insights into the Key Roles of Magnesium DOI
Liuyu Chen, Xuejiang Wang, Jing Li

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Abstract Enhancing singlet oxygen ( 1 O 2 )‐dominated nonradical oxidation with higher selectivity and longer lifetime is crucial for efficient antibiotic degradation. Herein, Fe/Mn/Mg layered double hydroxides (FeMnMg‐LDH) modified rice husk biochar composites (BC/FeMMg x ‐LDH, = 1, 2, 3) are prepared to activate peroxymonosulfate (PMS) sulfamethazine (SMT) removal. Increasing Mg content in FeMnMg‐LDH enhances catalytic efficiency, achieving 99.2% SMT removal (50 mg L −1 ) within 30 min BC/FeMMg 3 ‐LDH/PMS. identified as the primary active species, its dominance increasing rises. High induces lattice strain structural disorder LDH by atom intercalation octahedron, creating abundant vacancies (Vo) surface M─OH groups. These Vo amplify Fe─Mg polarization effect promote formation of electron‐rich Fe centers. Simultaneously, elevated d ‐band center at Mn site develops electron‐donating centers, facilitating short‐range electron transfer center, boosting high local density. This process PMS activation regulation. Moreover, neutral pH microenvironment constructed Mg, hydroxyl interlayer carbonates supports stable generation broad applicability. study offers new insights into Mg‐induced effects ‐LDH development ‐dominated catalysts.

Язык: Английский

Synergistic Oxygen Vacancy and Dual‐Electron Centers for Enhancing Peroxymonosulfate Activation by Fe─Mn─Mg LDH/BC: Insights into the Key Roles of Magnesium DOI
Liuyu Chen, Xuejiang Wang, Jing Li

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Abstract Enhancing singlet oxygen ( 1 O 2 )‐dominated nonradical oxidation with higher selectivity and longer lifetime is crucial for efficient antibiotic degradation. Herein, Fe/Mn/Mg layered double hydroxides (FeMnMg‐LDH) modified rice husk biochar composites (BC/FeMMg x ‐LDH, = 1, 2, 3) are prepared to activate peroxymonosulfate (PMS) sulfamethazine (SMT) removal. Increasing Mg content in FeMnMg‐LDH enhances catalytic efficiency, achieving 99.2% SMT removal (50 mg L −1 ) within 30 min BC/FeMMg 3 ‐LDH/PMS. identified as the primary active species, its dominance increasing rises. High induces lattice strain structural disorder LDH by atom intercalation octahedron, creating abundant vacancies (Vo) surface M─OH groups. These Vo amplify Fe─Mg polarization effect promote formation of electron‐rich Fe centers. Simultaneously, elevated d ‐band center at Mn site develops electron‐donating centers, facilitating short‐range electron transfer center, boosting high local density. This process PMS activation regulation. Moreover, neutral pH microenvironment constructed Mg, hydroxyl interlayer carbonates supports stable generation broad applicability. study offers new insights into Mg‐induced effects ‐LDH development ‐dominated catalysts.

Язык: Английский

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