Comparative study of carbon paste electrodes modified by new pentaaza macrocyclic ligands and gold nanoparticles embedded in three-dimensional sol–gel network for determination of trace amounts of Ag(I)

Mashhadizadeh, Mohammad Hossein; Ramezani, Soleyman; Shockravi, Abbas; Kamali, Mohammad

doi:10.1007/s10847-012-0197-6

Cited by 10 publications

(8 citation statements)

References 38 publications

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“…Colloidal gold nanoparticles were firstly prepared and then densely dispersed into the sol-gel network (SGAN) closely Scheme 2 Figurative representation of CCAE/SGAN sensing platform preparation pathway as discussed previously (Mashhadizadeh et al , 2012(Mashhadizadeh et al , 2013. Preparation of AuNPs/sol-gel process was concisely depicted in Scheme 2.…”

Section: Preparation Of Aunps and Sganmentioning

confidence: 99%

“…The performance of the electrodes was investigated by measuring the emfs of silver nitrate solution which was prepared with a concentration range of 2.2 9 10 -1 to 4.0 9 10 -11 mol L -1 by serial dilution. All measurements were implemented at *25°C (more details are exactly similar to the previously reported works) Mashhadizadeh et al 2012Mashhadizadeh et al , 2013Mashhadizadeh et al , 2015.…”

Section: General Proceduresmentioning

confidence: 99%

“…Because of their antibacterial properties, silver salts and silver nanoparticles are used for the disinfection of drinking water and the preparation of topical gels, specialty bandages, implantable prostheses, and catheters. As a result, about 2500 tons of silver are released into the environment annually, and approximately 80 tons end up in surface waters (Ratte 1999;Mashhadizadeh et al 2013). Silver is not as toxic to humans as many other heavy metals, but the U.S. Environmental Protection Agency reported that a concentration higher than 1.6 nM is toxic to fish and microorganisms (Lai et al 2010) and the maximum contaminant level for total silver in drinking water was set to 0.9 lM, according to the Environmental Protection Agency in Washington DC of USA (1991).…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, several ISEs modified with some synthetic compounds containing nitrogen and sulfur atoms as coordinative sites for quantitative determination of silver(I) ion based on reasonable interaction between nitrogen and sulfur atoms have been reported (Mashhadizadeh et al 2013;Mohadesi and Taher 2007;Abu-Shawish et al 2013;Zhang et al 2012;Javanbakht et al 2009). The silver ion recognition with most of these carriers relies on the hard-soft acid base (HSAB) concept of Pearson (Pearson 1968).…”

Section: Introductionmentioning

confidence: 99%

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Silica gel/gold nanoparticles/(NS)2 ligand nanoporous platform-modified ionic liquid carbon paste electrode for potentiometric ultratrace assessment of Ag(I)

Ramezani

Mashhadizadeh

Ghobadi

et al. 2016

Int. J. Environ. Sci. Technol.

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A novel ionic liquid carbon paste electrode has been developed using sol-gel/Au nanoparticle (SGAN) involving (NS) 2 compound of N,N 0 -di-(cyclopentadienecarbaldehyde)-1,2-di(o-aminophenylthio) ethane (CCAE) as an appropriate neutral ion-carrier for ultrahigh-sensitive potentiometric determination of Ag(I). Colloidal gold nanoparticles (AuNPs) also well dispersed self-assembly into the 3-(mercaptopropyl)-trimethoxysilane (MPTS)-derived sol-gel network through Au-S covalent bond engendering continuous and super-conductive nanoporous three-dimensional array. The room-temperature ionic liquid, 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMIM.PF 6 ), was applied as a super-conductive pasting agent (binder). The SGAN/CCAE/IL-CPE exhibited a significantly enhanced sensitivity and preferential selectivity toward Ag(I) over a wide concentration range of 2.4 9 10 -9 to 2.2 9 10 -2 mol L -1 (R 2 = 0.9996) with a lower limit of detection of 7.9 9 10 -10 M and a Nernstian slope of 58.5 (±0.3) mV decade -1 . The electrode has a short response time of *5 s and long-time durability of about 2 months without any considerable divergence in potentials. Moreover, the potentiometric examinations could be carried out within the wide pH range of 3.5-9.5. Eventually, the practical utility of the proposed Ag(I)-sensor was evaluated by volumetric titration of AgNO 3 solution by sodium chloride and recovery of silver content in some real samples using flame atomic absorption spectroscopy as a confident reference.

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Section: Preparation Of Aunps and Sganmentioning

confidence: 99%

Section: General Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Silica gel/gold nanoparticles/(NS)2 ligand nanoporous platform-modified ionic liquid carbon paste electrode for potentiometric ultratrace assessment of Ag(I)

Ramezani

Mashhadizadeh

Ghobadi

et al. 2016

Int. J. Environ. Sci. Technol.

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“…[33][34][35] We have also examined such factors in DNS and pyridine based systems and studied them as host molecules in the presence of different metal cations in which the best selectivity and stability was found for Hg 2+ and Cu 2+ complexes. 24,36,37 In this work, we wish to report the effect of alkaline metal cations (Li + , Na + , K + , and Cs + )…”

Section: Introductionmentioning

confidence: 99%

Synthesis of new aza- and thia-crown ethers and their metal ion templates synthesis as model case study

Kamali¹,

Shockravi²,

Mohtasham³

et al. 2014

Arkivoc

Self Cite

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Four new thia-and four new aza-crown ethers were synthesized using the reaction of ethylene glycols ditosylated with 1,1´-(2,2´-dihydroxynaphthyl)sulfide (DNS) and 2,6-bis(3-hydroxyphenyl)-4-phenylpyridine in acetonitrile as solvent in the presence of bases (LiOH, NaOH, KOH and Cs 2 CO 3 ). In the synthesis of macrocycles based on DNS, the template effects of alkaline metal ions; Li + , Na + , K + and Cs + on the reaction yields were investigated. Sodium template generally was more effective for the synthesis of all four macrocycles. Relatively, good yields of 15-and 18-membered macrocycles were obtained in the presence of all kinds of applied cations. K + Cation was more effective template ion than Na + in the formation of 18-membered macrocycles due to their larger cavity size compared to the 15-membered cycles. The structures of macrocycles were confirmed by CHN/O analysis, IR, 1 H NMR, 13C NMR and mass spectrometry.

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Recommendations for Nomenclature of Ion-Selective Electrodes

Guilbault¹

1976

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Comparative study of carbon paste electrodes modified by new pentaaza macrocyclic ligands and gold nanoparticles embedded in three-dimensional sol–gel network for determination of trace amounts of Ag(I)

Cited by 10 publications

References 38 publications

Silica gel/gold nanoparticles/(NS)2 ligand nanoporous platform-modified ionic liquid carbon paste electrode for potentiometric ultratrace assessment of Ag(I)

Silica gel/gold nanoparticles/(NS)2 ligand nanoporous platform-modified ionic liquid carbon paste electrode for potentiometric ultratrace assessment of Ag(I)

Synthesis of new aza- and thia-crown ethers and their metal ion templates synthesis as model case study

Recommendations for Nomenclature of Ion-Selective Electrodes

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