Details

Autor(en) / Beteiligte

• Lee, Yun-Sik
• Chul Park, Bum
• Beom Lee, Dae
• Min, Hyun-Gi
• Kim, Min-Suk
• Kim, Sung-Chul
• Ok Won, Sung
• Wee, June
• Chae, Eunji
• Sim, Cheolho
• Kim, Youngeun
• Kim, Jeong-Gyu
• Keun Kim, Young
• Cho, Kijong

Titel

Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils

Ist Teil von

• Environment international, 2023-05, Vol.175, p.107963-107963, Article 107963

Ort / Verlag

Netherlands: Elsevier Ltd

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals

Beschreibungen/Notizen

• [Display omitted] Arsenic (As)-contaminated soil inevitably exists in nature and has become a global challenge for a sustainable future. Current processes for As capture using natural and structurally engineered nanomaterials are neither scientifically nor economically viable. Here, we established a feasible strategy to enhance As-capture efficiency and ecosystem health by structurally reorganizing iron oxyhydroxide, a natural As stabilizer. We propose crystallization to reorganize FeOOH-acetate nanoplatelets (r-FAN), which is universal for either scalable chemical synthesis or reproduction from natural iron oxyhydroxide phases. The r-FAN with wide interlayer spacing immobilizes As species through a synergistic mechanism of electrostatic intercalation and surface chemisorption. The r-FAN rehabilitates the ecological fitness of As-contaminated artificial and mine soils, as manifested by the integrated bioassay results of collembolan and plants. Our findings will serve as a cornerstone for crystallization-based material engineering for sustainable environmental applications and for understanding the interactions between soil, nanoparticles, and contaminants.