Silica-Based 1,3-Diphenyl-1,3-Propanedione Composites: Efficient Uranium Capture for Environmental Remediation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU151499" target="_blank" >RIV/00216305:26620/24:PU151499 - isvavai.cz</a>
Alternative codes found
RIV/68081731:_____/24:00587264
Result on the web
<a href="https://www.eurekaselect.com/article/139533" target="_blank" >https://www.eurekaselect.com/article/139533</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2174/0115734110300973240325131908" target="_blank" >10.2174/0115734110300973240325131908</a>
Alternative languages
Result language
angličtina
Original language name
Silica-Based 1,3-Diphenyl-1,3-Propanedione Composites: Efficient Uranium Capture for Environmental Remediation
Original language description
Introduction This study synthesizes and characterizes a novel hybrid composite, SG-dpm, to capture UO22+ ions from water. The composite has successfully formed by hosting covalently diphenylmethane-1,3-dione (dpm) within an inorganic silica gel matrix, showing promising potential for environmental remediation and nuclear waste management.Methods The preparation involved the reaction of tetraethylorthosilicate (TEOS) with diphenylmethane-1,3-dione (dpm) under acidic conditions, resulting in white solids. The doped composite was characterized by Fourier Transform Infrared Spectroscopy (FTIR), revealing the presence of siloxane and Si-O-C bonds. The application of SG-dpm for capturing UO22+ ions from water was investigated, showing a shift in FTIR peaks and confirming the formation of SG-dpm-UO22+ as inner-sphere complexes. Scanning Electron Microscopy (SEM) revealed a non-uniform distribution of particles, essential for consistent behavior in applications such as adsorption.Results and Discussion Batch sorption experiments demonstrated temperature-dependent sorption behavior with increased efficiency at higher temperatures (T = 55 degrees C). The study also explored the influence of pH and initial concentration on UO22+ sorption, revealing optimal conditions at pH 5 and lower initial concentrations (1.0 mg L-1). Kinetic studies using pseudo-second-order models indicated a high efficiency of UO22+ ion removal (99%) as a chemisorption process. Intraparticle diffusion models highlighted three distinct sorption stages. Sorption isotherm studies favored the Langmuir model, emphasizing monolayer adsorption. The thermodynamic analysis suggested an endothermic (circle times H = + 16.120 kJ mol-1) and spontaneous (circle times G = -25.113 to - 29.2449 kJ mol-1) sorption process. Selectivity studies demonstrated high efficiency in capturing Cu2+, Co2+, and Cr3+ ions, high degree selectivity of UO22+ ions (74%), moderate efficiency for Fe3+ and Zn2+, and lower efficiency for Pb2
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10400 - Chemical sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Current Analytical Chemistry
ISSN
1573-4110
e-ISSN
1875-6727
Volume of the periodical
20
Issue of the periodical within the volume
7
Country of publishing house
AE - UNITED ARAB EMIRATES
Number of pages
16
Pages from-to
1-16
UT code for WoS article
001198580100001
EID of the result in the Scopus database
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