Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils
https://orcid.org/0000-0002-9656-2045
https://orcid.org/0000-0003-0512-1154
https://orcid.org/0000-0001-7486-7967
https://orcid.org/0000-0002-7215-8945
Graphical abstract Display Omitted
Abstract 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.
Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils
https://orcid.org/0000-0002-9656-2045
https://orcid.org/0000-0003-0512-1154
https://orcid.org/0000-0001-7486-7967
https://orcid.org/0000-0002-7215-8945
Graphical abstract Display Omitted
Abstract 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.
Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils
https://orcid.org/0000-0002-9656-2045
https://orcid.org/0000-0003-0512-1154
https://orcid.org/0000-0001-7486-7967
https://orcid.org/0000-0002-7215-8945
Graphical abstract Display Omitted
Abstract 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.
Crystallization-based upcycling of iron oxyhydroxide for efficient arsenic capture in contaminated soils
Lee, Yun-Sik (Autor:in) / Chul Park, Bum (Autor:in) / Beom Lee, Dae (Autor:in) / Min, Hyun-Gi (Autor:in) / Kim, Min-Suk (Autor:in) / Kim, Sung-Chul (Autor:in) / Ok Won, Sung (Autor:in) / Wee, June (Autor:in) / Chae, Eunji (Autor:in) / Sim, Cheolho (Autor:in)
05.05.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Iron oxyhydroxide , Nanomaterial , Sustainable Crystallization , Arsenic capture , Soil amendments , As , arsenic , r-FAN , reorganization of FeOOH-acetate nanoplatelets , EG , ethylene glycol , Fh , ferrihydrite , Gt , goethite , SEM , scanning electron microscopy , STEM , scanning transmission electron microscopy , XRPD , X-ray powder diffraction , SAED , selected area electron diffraction , FTIR , Fourier transform infrared , XPS , X-ray photoelectron spectroscopy, TGA, thermogravimetric analysis, ICP-MS, inductively coupled plasma mass spectrometry , As(III)) , arsenite , As(V) , arsenate, EC, electrical conductivity , ICP-OES , inductively coupled plasma optical emission spectroscopy
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