Synthesis and structural characterization of bisazocalix[4]arene with melamine: Metal ion extraction studies

Elçin, Serkan; Karakuş, Özlem Özen; Kara, İzzet; Deligöz, Hasalettin

doi:10.1016/j.molliq.2014.12.020

Cited by 7 publications

(6 citation statements)

References 27 publications

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“…Some type of adsorbent has been used to eliminate or reduce heavy metals, i.e. Poly-Calix [4]arene-Crown-6 [8,9,10,11], benzyloxycalix [4]arene [12], Calix [4]Resorcine [13,14], calixarene derivative [15], Calix [8] arene Derivative. [16], Bisazocalix [4]arene [17], t-butylcalix [4]arene derivatives [5].…”

Section: Introduction:-mentioning

confidence: 99%

Study of Pb(ii) and Fe(iii) Metal Cations Adsorption Into P-Tert-Butylcalix[4]arene as Adsorbent: Kinetic Adsorption.

Busroni¹,

Siswanta²,

SantosaS³

et al. 2017

IJAR

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This research explain the study about compound of 5,11,17,26,27,arene (TBCA) that will be used as adsorption material for heavy metal cations. Adsorption using immersion method with variations such as the value of acidity (pH), time of exposure and initial concentration of metal cations have been conducted. The results of each investigation showed that the optimum pH of adsorption was at pH = 5 for metal cations of Pb(II) and Fe (III). The observation results showed the optimum time exposure of cation adsorption of Pb(II) and Fe(III) was 90 minutes. Study about kinetic adsorption of Pb(II) metal cations of the adsorbent refered the Ho kinetic model, pseudo second order with rate constant of adsorption 143x10 -3 g.mol -1 .min -1 and Fe(III) refered the Lagergren kinetics model, pseudo first order with the rate constant of 9.21 x 10 -3 min -1 . The observation of the study showed that the isotherms adsorption for metal cations of Pb(II) and Fe(III) refered the pattern trend of Langmuir isotherm models. The value of the optimum capacity for metal cation adsorption Pb(II) and Fe(III) each was 128.46 mg/g and 156.09 mg/g respectively. Adsorption energy for Pb(II) and Fe(III) was 5.81 k.J/mol and 7.01 kJ / mol, respectively. …………………………………………………………………………………………………….... Introduction:-The existence of the metal cations can endanger human health as heavy metals if enter into the body, because the heavy metals are toxic/poison. Heavy metals are chemical elements with a specific gravity greater than 5 g/cm 3 that located in the lower right corner of the periodic table system. Iron or Ferrum (Fe) is a silvery-white metal, clay, and can be formed. It has been conducted a study of adsorption of metal cations Fe(III) in aqueous systems using zeolite, in the determination of adsorption of metal cations Fe +3 performed at pH area between 1-6 [1]. Lead was widely used in the paint factory, fuel, battery industry and ammunition bullets. Lead is toxic which very influenced toward children, because the paint is widely used in residences. If the metal contains in the blood up to 10 mg/mL, it can cause illness symtoms and Pb(II) concentrations in the water does not depend on the season, but on the depth. Lead ions contained in the water can get into the body of the fish and other aquatic animals [2]. Siswanta research resulted that the adsorbent Calix[4]resorcinarene, hybrid or Calix[4]resorcinarene-chitosan and chitosan can be applied to eliminate the Pb(II) metal ions. The results of the investigation explained that the value of adsorption capacity was Calix[4]resorcinaren > Chitosan > Calix [4] resorcinarene-chitosan (hybrid) [3]. Prabawati, reported that it can be synthesized compounds of p-t.butyl-37-monoallyloxy-38,39,40,41,42-pentahidroxycalix[6]arene and p-t.butyl-

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Section: Introduction:-mentioning

confidence: 99%

Study of Pb(ii) and Fe(iii) Metal Cations Adsorption Into P-Tert-Butylcalix[4]arene as Adsorbent: Kinetic Adsorption.

Busroni¹,

Siswanta²,

SantosaS³

et al. 2017

IJAR

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“…Sugarcane bagasse activated carbon (SCBA) is also effective in adsorbing Pb(II) [5]. Furthermore, Pb(II) absorption can be carried out using bisazocalix [4]arene [6], calix [4] resorcinarene derivatives [7], bentonite-decoratedcalix [4]arene [8][9][10], modified beech sawdust [11], methoxyphenylcalix [4]resorcinarene [12], calixarenegrafted nanocomposites [13], polypyrrole-carbon composites [14], polyacrylamide [15], 5,11,17,23-tetra-(t-butyl)-25,26,27,28-tetrahydroxycalix [4]arene (TBCA) [16][17][18], poly-calix [4]arene [19]. The synthesis of tribenzoyloxy-p-tert-butylcalix [4]arene can occur through two reaction routes, namely the formation of TBCA using p-tert-butylphenol with formaldehyde under alkaline conditions (NaOH) along with water smoke [20][21][22][23], as well as partial benzoylation of p-tertbutylcalix [4]arene using benzoyl chloride in a mole ratio of 1:3.5 to yield 5,11,17,23-tetra-(t-butyl)-26,27,28tribenzoyloxycalix [4]arene (TBMTCA) [24].…”

Section: ■ Introductionmentioning

confidence: 99%

“…Calixarenebased extractants for heavy metal ions removal from aqueous solutions have been reported [25]. Adsorption of methylene blue dye by calix [6]arene-modified has been reported [26]. Adsorption of Pb(II) and Cu(II) ions using bio-char [27], pulverized clay [28], chemically activated carbon [29], calix [6]arene-modified lead sulfide in paint (PbS), methylene blue dye [30], and cyclodextrincalixarene [31].…”

Section: ■ Introductionmentioning

confidence: 99%

“…Adsorption of methylene blue dye by calix [6]arene-modified has been reported [26]. Adsorption of Pb(II) and Cu(II) ions using bio-char [27], pulverized clay [28], chemically activated carbon [29], calix [6]arene-modified lead sulfide in paint (PbS), methylene blue dye [30], and cyclodextrincalixarene [31]. The previously mentioned absorbents are relatively difficult in synthesize and expensive compared to TBCA and TBMTCA.…”

Section: ■ Introductionmentioning

confidence: 99%

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Adsorption of Pb(II) on Calix[4]arene Derivatives: Kinetics and Isotherm Studies

Busroni

Siswanta²,

Jumina³

et al. 2022

Indones. J. Chem.

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This study aims to investigate the application of two calix[4]arene derivatives named 5,11,17,23-tetra-(t-butyl)-25,26,27,28-tetrahydroxycalix[4]arene (TBCA) and 5,11,17,23-tetra-(t-butyl)-26,27,28-tribenzoyloxycalix[4]arene (TBMTCA) as adsorbents of Pb(II) from aqueous solution in a batch system. Adsorption was carried out by varying pH solution, exposure time, and concentration. The kinetics was evaluated based on the adsorption in various exposure times using the Lagergren and Ho equations, while the isotherms were analyzed based on the adsorption in various Pb(II) concentrations using the Langmuir and Freundlich equations. Furthermore, the isotherm model showed the Pb(II) adsorption of TBCA and TBMTCA followed Langmuir model with a capacity of 137.29 and 128.46 mg/g, respectively. Based on the adsorption capacity, both adsorbents are the potential for the removal of heavy metal cations from polluted water.

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“…Aryl diazonium salt chemistry can produce stable organic layers on the surface via carbide bond formation . Melamine (MEL) is often used as a precursor for diazonium salt formation because of the presence of three amine functionalities in the triazine ring, which makes molecules efficient for diazonium grafting . Aminotriazine groups were introduced on the electrode surface by using an in situ diazotization process that involves melamine …”

Section: Introductionmentioning

confidence: 99%

Direct diazotization of graphite nanoplatelets with melamine and their favorable application in epoxy resins

Qin

Zhang

2020

Polymers for Advanced Techs

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The ease of undesirable agglomeration and a low efficiency are two problems that restrict the application of graphite nanoplatelets (GNPs) in epoxy resins (EP). Herein, a new strategy with melamine (MEL) as the precursor to functionalize GNPs chemically, which form a bonding layer that is compatible with epoxy matrix, is reported.The MEL fragments with secondary amine groups were grafted uniformly on the GNPs surface by covalent junctions to exploit the diazonium chemistry. This behavior led to a better dispersion and a stronger interaction with the epoxy matrix and resulted in an enhanced glass transition temperature and bending strength, compared with the pure EP. When only 1 wt% functionalized GNPs (f-GNPs) was used, the Tg of the modified EP raised of about 15 C compared with pure EP, and the bending strength increased by approximately 39%. The dielectric constant of the EP with f-GNPs was impacted slightly, and the dielectric loss decreased. At 10 5 Hz, the dielectric loss of the EP with 1 wt% f-GNPs decreased by approximately 11% compared with pure EP. Therefore, diazotization modification of the GNPs is a useful approach to improve the compatibility in nanoparticle networks. K E Y W O R D S compatibility, epoxy resins, graphite nanoplatelets

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Synthesis and structural characterization of bisazocalix[4]arene with melamine: Metal ion extraction studies

Cited by 7 publications

References 27 publications

Study of Pb(ii) and Fe(iii) Metal Cations Adsorption Into P-Tert-Butylcalix[4]arene as Adsorbent: Kinetic Adsorption.

Study of Pb(ii) and Fe(iii) Metal Cations Adsorption Into P-Tert-Butylcalix[4]arene as Adsorbent: Kinetic Adsorption.

Adsorption of Pb(II) on Calix[4]arene Derivatives: Kinetics and Isotherm Studies

Direct diazotization of graphite nanoplatelets with melamine and their favorable application in epoxy resins

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