Silica-Based 1,3-Diphenyl-1,3-Propanedione Composites: Efficient Uranium Capture for Environmental Remediation

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68081731:_____/24:00587264

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Silica-Based 1,3-Diphenyl-1,3-Propanedione Composites: Efficient Uranium Capture for Environmental Remediation

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Silica-Based 1,3-Diphenyl-1,3-Propanedione Composites: Efficient Uranium Capture for Environmental Remediation

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Current Analytical Chemistry

ISSN

1573-4110

e-ISSN

1875-6727

Svazek periodika

20

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

AE - Spojené arabské emiráty

Počet stran výsledku

16

Strana od-do

1-16

Kód UT WoS článku

001198580100001

EID výsledku v databázi Scopus

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