Synthesis, characterization and application of cyclam-modified magnetic SBA-15 as a novel sorbent and its optimization by central composite design for adsorption and determination of trace amounts of lead ions

Zare‐Dorabei, Rouholah; Darbandsari, Maryam Shamsedini; Moghimi, Ali; Tehrani, Mahnaz Saghanejhad; Nazerdeylami, Samaneh

doi:10.1039/c6ra21895d

Cited by 39 publications

(18 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fig. 3d displays a typical type IV nitrogen sorption isotherm in accordance with the defined behavior of SBA-15 [30][31][32][33][34][35][36]. (Fig.…”

Section: Sample Propertiesmentioning

confidence: 85%

Preparation and characterization of a novel optical chemical sensor for determination of trace amounts of Praseodymium ion by UV/Vis spectrophotometry

Dashtian

Zare‐Dorabei

2017

Sensors and Actuators B: Chemical

Self Cite

View full text Add to dashboard Cite

In the present work, a novel optical chemical sensor (optode) was prepared based on impregnation of N, N´-bis (salicylidene)-1, 3-ethylenediamine (BESA) Schiff base into mesoprous SBA-15 paste for determination of trace amounts of Praseodymium (Pr) ion by UV/Vis spectrophotometry. The sensor was fabricated by dip-coating triacetylcellulose membrane into indicator solution. The proposed optical sensor was prepared through a routine procedure and characterized by various techniques such as ATR-FT-IR and SEM analyses. This optode exhibited a linear range of 10 to 190 ng mL-1 for Pr(III) ion concentration with a detection limit of 5.0 ng mL-1. The value of the response time for the newly synthesized optode was within 100 s while depending on the Pr(III) ion concentration. The proposed optode showed low detection limit, fast response time and high selectivity with respect to the group of transition metal ions (Ce 3+ , Nb 3+ , La 3+ , Cr 3+ , Zn 2+ , Hg 2+ , and Fe 2+ ions). The optode was successfully regenerated with a mixture of thiourea and NaOH solution and the response was reversible with the relative standard deviation (R.S.D.) of 1.6%. The optode was stable and stored for at least 17 days without any considerable change in its sensitivity. Finally, the developed optode was applied to determine the Pr(III) ions in spiked samples.

show abstract

“…Fig. 3d displays a typical type IV nitrogen sorption isotherm in accordance with the defined behavior of SBA-15 [30][31][32][33][34][35][36]. (Fig.…”

Section: Sample Propertiesmentioning

confidence: 85%

Preparation and characterization of a novel optical chemical sensor for determination of trace amounts of Praseodymium ion by UV/Vis spectrophotometry

Dashtian

Zare‐Dorabei

2017

Sensors and Actuators B: Chemical

Self Cite

View full text Add to dashboard Cite

show abstract

“…The experimental sequence was randomized to minimize the effects of uncontrolled factors. The response may be modelled as

y = β_{0} + \sum_{i = 1}^{k} β_{i} x_{i} + \sum_{i = 1}^{k} \sum_{j = 1}^{k} β_{ij} x_{i} x_{j} + \sum_{i = 1}^{k} β_{ii} x_{i}^{2} + ε

where y is the predicted response (removal percentage); x i are the independent variables (pH, MV concentration, adsorbent amount and sonication time) that are recognized for each experimental run; β 0 is the model constant; β i are the linear coefficients; β ii are the quadratic coefficients; and β ij are the cross‐product coefficients . The main, interaction and quadratic effects were optimized and assessed in this design.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of antibacterial chromium iron oxide nanoparticle‐loaded activated carbon for ultrasound‐assisted wastewater treatment

Bazrafshan

Hajati

Ghaedi

et al. 2017

Applied Organom Chemis

View full text Add to dashboard Cite

The aim of this study was to evaluate the surface adsorption capacity of CrFeO 3 nanoparticle-loaded activated carbon (CrFeO 3 -NPs-AC) for the removal of a cationic dye (methyl violet, MV). CrFeO 3 -NPs were hydrothermally synthesized and loaded on AC followed by characterization using X-ray diffraction, fieldemission scanning electron microscopy and energy-dispersive and Fourier transform infrared spectroscopies. The CrFeO 3 -NPs were tested for in vitro antibacterial activities against Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa) bacteria. Minimum inhibitory and minimum bactericidal concentrations of CrFeO 3 -NPs-AC were obtained to be 50 and 100 μg ml , respectively, against S. aureus and 25 and 50 μg ml −1 against P. aeruginosa. These results indicated the antibacterial properties of CrFeO 3 -NPs-AC. To investigate the adsorption process, several systematic experiments were designed by varying parameters such as adsorbent mass, pH, initial MV concentration and sonication time. The adsorption process was modelled and the optimal conditions were determined to be 0.013 g, 7.4, 15 mg l −1 and 8 min for adsorbent mass, pH, MV concentration and sonication time, respectively. The real experimental data were found to be efficiently explained by response surface methodology and genetic algorithm model. Kinetic studies for MV adsorption showed rapid sorption dynamics described by a second-order kinetic model, suggesting a chemisorption mechanism. Then, the experimental equilibrium data obtained at various concentrations of MV and adsorbent masses were fitted to conventional Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models. Dye adsorption equilibrium data were fitted well to the Langmuir isotherm. From the Langmuir model, the maximum monolayer capacity was calculated to be 65.67 mg g −1 at optimum adsorbent mass.

show abstract

“…The calculated pvalues smaller than 0.05 indicate that the results are predicted at a 5% confidence interval. The lack of fit (LOF) is an important parameter that is related to pure error [65][66][67]. In the present study, the LOF value of 1.36 for Cd indicates that the model is suitable for predicting adsorbent performance ( Table 3).…”

Section: Discussionmentioning

confidence: 58%

A comprehensive study on removal of cadmium from aqueous solution by using mesoporous SBA-15 functionalized by 1,5-diphenyl carbazide: experimental design, kinetic, thermodynamic, and isotherm aspects

Danesh-Khorasgani¹,

Faghihian²,

Givianrad³

et al. 2021

Comptes Rendus. Chimie

View full text Add to dashboard Cite

show abstract

Synthesis, characterization and application of cyclam-modified magnetic SBA-15 as a novel sorbent and its optimization by central composite design for adsorption and determination of trace amounts of lead ions

Abstract: A new, efficient, selective and relatively low cost adsorbent was developed based on Fe3O4@cyclam-SBA-15 for adsorption and determination of lead ions.

Cited by 39 publications

References 53 publications

Preparation and characterization of a novel optical chemical sensor for determination of trace amounts of Praseodymium ion by UV/Vis spectrophotometry

Preparation and characterization of a novel optical chemical sensor for determination of trace amounts of Praseodymium ion by UV/Vis spectrophotometry

Synthesis and characterization of antibacterial chromium iron oxide nanoparticle‐loaded activated carbon for ultrasound‐assisted wastewater treatment

A comprehensive study on removal of cadmium from aqueous solution by using mesoporous SBA-15 functionalized by 1,5-diphenyl carbazide: experimental design, kinetic, thermodynamic, and isotherm aspects

Contact Info

Product

Resources

About