ORIGINAL_ARTICLE
Electrosynthesis and optical modeling of ZnO nanostructures
Optical modeling was applied for obtaining absorbance spectra and band gap values for different morphology of ZnO semiconductor. In optical modeling, the relative permittivity scalars of zinc oxide coral like nanorods were calculated using the Bruggeman homogenization formalism. ZnO nano rods (ZONRs) as a nucleus layer were fabricated on the Indium Tin Oxide (ITO) by chronoamperometry (CA) in aqueous solution containing different concentration of zinc nitrate. Reduction of nitrate anion is a good resource for hydroxyl ion that with zinc anion results ZnO. The orientation and morphology of both the nucleus layer and successive coral like ZONRs were analyzed using X-ray diffraction (XRD).
https://icc.journals.pnu.ac.ir/article_949_3fd4d873774bd43300be8c87fc7a85de.pdf
2015-04-01
72
77
Optical modeling
ZnO
Chronoamperometry
Coral like nanostructure
Narges
Ajami
ajami1374@yahoo.com
1
Department of Chemistry, Payame Noor University, P.O.BOX 19395-3697 Tehran, Iran
LEAD_AUTHOR
Ali
Ehsani
ehsani46847@yahoo.com
2
Department of Chemistry, Faculty of science, University of Qom, P. O. Box 37185-359, Qom, Iran
AUTHOR
Ferydon
Babaei
fbabaei@qom.ac.ir
3
Department of Chemistry, Faculty of science, University of Qom, P. O. Box 37185-359, Qom, Iran
AUTHOR
Ashraf
Heidaripour
aheidari@mail.kntu.ac.ir
4
Department of chemistry, Faculty of Science, K. N. Toosi University of Technology, Tehran,Iran
AUTHOR
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ORIGINAL_ARTICLE
Microwave assisted green synthesis of α, ά- bis (substituted- benzylidene) alkanones
Microwave assisted green synthesis of α, ά- bis (substituted- benzylidene) alkanones by the crossed- aldol condensation reaction of substituted aryl aldehydes with ketones in the presence of catalytic amount of NbCl5 in good to excellent yields. This reaction is carried out under solvent-free conditions. The results showed that aldehydes bearing electron–donating substituent's on phenyl-ring favored the formation of product in good to excellent yields with reaction times ranging between 3 and 7 min. In addition, furfural, cinamaldehyde, thiophene-2-carbaldehyde and 5-methylthiophene-2-carbaldehyde were investigated in aldol reaction, and the results showed excellent yields. Also, the reactions were carried out at room & thermal (80 0C) conditions. The results showed that the yields are in accordance with the microwave irradiations, But the time is 1.5-5 h at room temperature and 15-45 min in thermal conditions.
https://icc.journals.pnu.ac.ir/article_950_42919c08339e12b81fe1aa5e97db66e9.pdf
2015-04-01
78
85
Niobium pentachloride
solvent-free
Aryl aldehyde
microwave irradiation
Mohammad Ali
Nasseri
manaseri@birjand.ac.ir
1
University of Birjand
LEAD_AUTHOR
Ali
Allahresani
rasaniali@gmail.com
2
Department of Chemistry, College of Sciences, University of Birjand
AUTHOR
Batol
Zakeri Nasab
beti.zakeri@yahoo.com
3
Department of Chemistry, College of Sciences, University of Birjand
AUTHOR
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30
ORIGINAL_ARTICLE
Kinetic study of the electrocatalytic oxidation of acetaldehyde at Ni/Al layered double hydroxide modified sol-gel derived carbon ceramic electrode
In this research, we reported a novel modified carbon ceramic electrode (CCE) using Ni/Al Layered double hydroxide as modifier was fabricated by sol-gel technique. The Ni/Al Layered double hydroxide modified sol gel derived carbon ceramic (Ni/Al LDH-SGD-CC) electrode was used for electrocatalytic oxidation of acetaldehyde. The oxidation of acetaldehyde happens at the potential where Ni (III) species are generated. The modified electrode exhibited remarkable electrocatalytic activity for the oxidation of acetaldehyde under alkaline conditions, indicating that the anodic oxidation of acetaldehyde could be catalyzed at Ni/Al LDH-SGD-CC electrode. This proves that the Ni/Al LDH bears the main role in electro-catalytic oxidation of acetaldehyde. Finally, by using the cyclic voltammetry, chronoamperometric and tafel plots method, the catalytic rate constant, charge-transfer coefficient, the number of electrons involved in the rate-determining step (nα) and exchange current density for chemical reaction of acetaldehyde was estimated as 0.356 × 104 cm3 mol-1 s-1, 0.51, 1 and 2.76×10-8 Acm-2 respectively.
https://icc.journals.pnu.ac.ir/article_978_0e6a574a99c7584b35df8cc1e661c554.pdf
2015-04-01
86
95
Ni/Al layered double hydroxide
modified carbon ceramic electrode
electrocatalytic oxidation
acetaldehyde
Ghasem
Karim-Nezhad
g.knezhad@gmail.com
1
Department of Chemistry, Payame Noor University, PO BOX 19395-3697 Tehran, IRAN
LEAD_AUTHOR
Ali
Pashazadeh
a.pashazadeh20@gmail.com
2
Department of Chemistry, Payame Noor University, PO BOX 19395-3697 Tehran, IRAN
AUTHOR
[1] M.J. Farias, G.A. Camara, A.A. Tanaka, T. Iwasita, J. Electroanal. Chem., 2007, 600, 236–242.
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4
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30
ORIGINAL_ARTICLE
Three-component procedure for the synthesis of new chiral spirooxindolopyrrolizidines via catalytic highly enantioselective 1,3-dipolar cycloaddition
The catalytic highly regio-, diastereo-, and enantioselective synthesis of a small library of spiropyrrolizidineoxindolesvia a four-component 1,3-dipolar cycloaddition reaction of azomethine ylides, derived from isatin, with electron-deficient dipolarophilewas described. The process occurs at room temperature in aqueous ethanol as a green solvent and in the presence of a bidendatebis(imine)–Cu(II)triflate complex as catalyst.The reaction mechanism is discussedon the basis of the assignment of the absolute configuration of the cycloadducts.The catalytic highly regio-, diastereo-, and enantioselective synthesis of a small library of spiropyrrolizidineoxindolesvia a four-component 1,3-dipolar cycloaddition reaction of azomethine ylides, derived from isatin, with electron-deficient dipolarophilewas described. The process occurs at room temperature in aqueous ethanol as a green solvent and in the presence of a bidendatebis(imine)–Cu(II)triflate complex as catalyst.The reaction mechanism is discussedon the basis of the assignment of the absolute configuration of the cycloadducts.
https://icc.journals.pnu.ac.ir/article_979_200308267ea4e560812fe172c17aa549.pdf
2015-04-01
96
104
Chiral auxiliaries
chiral spiro-oxindolopyrrolizidines
asymmetric 1-3-dipolar
azomethineylide
Mohammad Javad
Taghizadeh
mohammadjavadtaghizadeh31@yahoo.com
1
Department of Chemistry, School of Sciences University of Imam Hossein, Tehran, Iran
LEAD_AUTHOR
Khosrow
Jadidi
k.jadidi@sbu.ac.ir
2
Department of Chemistry, Shahid Beheshti University, G.C. Tehran 1983963113, Iran
AUTHOR
[1] D.J. Ram, M.Yus, Angew. Chem. Int. Ed., 2005, 44, 1602-1634.
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12
ORIGINAL_ARTICLE
Study on the effective decontamination and hydrolysis of sulfur mustard agent simulant using tenorite (CuO) nanoparticles as a destructive catalyst
In the present study, tenorite (CuO) nanoparticles have been assayed for their catalytic properties. The decontamination reaction of chloro ethyl ethyl sulfide (CEES) as an surrogate of sulfur mustard simulant have been accomplished on the surface of CuO NPs with different weight ratios at ambient temperature and monitored by Gas chromatography equipped with Flame ionization detector (GC-FID) and Gas chromatography coupled with a mass spectroscopy (GC-MS). CuO NPs were successfully synthesized via precipitation method in the absence and presence of polyvinylpyrrolydone (PVP) and copper (ΙΙ) nitrate as the precursors. PVP was used as a capping agent to control and reduce the agglomeration of the nanoparticles. The synthesized CuO NPs were characterized by Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques. The GC analysis results has revealed that the decontamination of CEES occurred in n-hexane solvent with the weight ratio of 1:40 (CEES: CuO NPs) after 12 h with more than 90% yield. The hydrolysis product such as hydroxyl ethyl ethyl sulfide (HEES) was also identified by GC-MS analysis.
https://icc.journals.pnu.ac.ir/article_980_491b815e0234e21b9397abadfe7d9d6e.pdf
2015-04-01
105
113
Tenorite (CuO) nanoparticles
chloroethyl ethyl sulfide (CEES)
decontamination
hydrolysis
Precipitation
polyvinylpyrrolydone (PVP)
Meysam
Sadeghi
meysamsadeghi45@yahoo.com
1
Department of Chemistry, University of Imam Hussein Comprehensive, PB BOX 995-16765, Tehran, Iran
LEAD_AUTHOR
Sina
Yekta
sina.yekta.chem@gmail.com
2
Department of chemistry, Faculty of Basic Sciences, Islamic Azad University, Qaemshahr Branch, Qaemshahr, Iran
AUTHOR
Mirhassan
Hosseini
hoseiny.inorganic@gmail.com
3
Department of chemistry, Faculty of Basic Sciences, Imam Hussein Comprehensive University (IHCU), Tehran, Iran,
AUTHOR
Mohammad javad
Taghizadeh
taghizadehmohammadjavad@gmail.com
4
Department of Chemistry, University of Imam Hussein Comprehensive, PB BOX 995-16765, Tehran, Iran
AUTHOR
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ORIGINAL_ARTICLE
A new facile route to synthesize thieno[3,2-e][1,2,4]triazolo[4,3-c]pyrimidine derivatives
A new facile route for synthesis of 3- (aryl) -8, 9- di (alkyl) thieno [3,2-e] [1,2,4] triazolo pyrimidines derivative from the same starting material, 2- amino - 4,5 -di (alkyl) thiophene-3- carboxamide, has been developed through heterocyclization of the corresponding arylidene-hydrazino -5,6 -di (alkyl) thieno [2,3-d] pyrimidine under refluxing condition with acetic anhydride followed by air oxidation. The products were obtained in high yield with an easy work-up in simple reaction along with the purification of products by non-chromatographic method. This general synthetic procedure can be extended to the preparation of a wide variety of isomeric triazoles using 2-amino thiophene-3-carboxamide bifunctional derivatives.
https://icc.journals.pnu.ac.ir/article_990_64c0478c874aeb47e50c95b79b0dacdb.pdf
2015-04-01
114
120
Thieno[3
2-e][1
2
4]triazolo[4
3-c]pyrimidines heterocyclization acetic anhydride air oxidation
Mehdi
Soleimany
mehdi_soleimany2005@yahoo.com
1
Payame Noor University (PNU)
LEAD_AUTHOR
Jalil
Lari
j_lary@pnu.ac.ir
2
Payame Noor University of Mashhad
AUTHOR
Hooshang
Vahedi
hooshangvahedi@yahoo.co.uk
3
Payame Noor University of Mashhad
AUTHOR
Morteza
Imanpour
morteza_imanpour@yahoo.com
4
Payame Noor University of Mashhad
AUTHOR
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ORIGINAL_ARTICLE
Ammonium nitrate as an efficient and green reagent for the oxidation of alcohols into their corresponding carbonyl compounds in the presence of heteropoly acids
Simple, cheap and green protocol for effective conversion of alcohols to corresponding carbonyl compounds in the presence of H14[NaP5W30O110] and ammonium nitrate is reported. The products were characterized by FT-IR and comparison of their physical properties with those reported in the literatures. The progress of the reaction was monitored by thin layer chromatography (TLC) technique. The aliphatic products were detected by gas chromatography–flame ionization detector. Reactions were completed within 15-35 minutes at room temperature. In order to investigate the catalyst reusability, the oxidation of benzyl alcohol was carried out in the presence of H14[NaP5W30O110]. At the end of each reaction, the catalyst was separated and the recovered catalyst was reused for at least three runs without significant degradation in catalytic activity and performance.
https://icc.journals.pnu.ac.ir/article_1195_4f7fb960d824553ebe3ce1d1d1cbbee8.pdf
2015-04-01
121
131
alcohols
heteropoly acids
Oxidation
Heterogeneous catalyst
ammonium nitrate
energetic materials
Vahid
Azizkhani
vahid.azizkhani1@gmail.com
1
Unuversity of Zanjan
AUTHOR
Ali
Ramazani
aliramazani@gmail.com
2
University of Zanjan
LEAD_AUTHOR
Sang
Woo Joo
aliramazani@yahoo.com
3
Yeungnam University
AUTHOR
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ORIGINAL_ARTICLE
Synthesis of methyl 2-[2-(alkylimino)-4-oxo-3-phenyl-1,3-thiazolan-5-yliden]acetate derivatives under solvent-free condition
An efficient synthesis of Methyl 2-[2-(alkylimino)-4-oxo-3-phenyl-1,3-thiazolan-5-yliden]acetate derivatives via simple three-component reaction and one-pot reactions between isoquinoline, dimethyl acetylenedicarboxylate and N-phenylthiourea under solvent-free conditions without using any additional catalyst, is described. The mild reaction conditions and good yields and exhibit the synthetic advantage of this method. Also this method is environmentally friendly. The methods of green chemistry continue to grow in importance. Alternative processes help to conserve resources and can even reduce costs. The replacement of convention solvents with water or solvent-free conditions, which is harmless to health and is available in large quantities. The thiazolium rings are key units in agricultural compounds and drugs.
https://icc.journals.pnu.ac.ir/article_995_f24048133f3d176ff37d3145b71efae5.pdf
2015-04-01
132
136
Isoquinoline
solvent-free
N-phenylthiourea
thiazolan
green chemistry
Rahimeh
Hajinasiri
rhmhajinasiri@yahoo.com
1
Department of Chemistry, Islamic Azad University, Qaemshahr Branch, P.O. Box 163, Qaemshahr, Iran
LEAD_AUTHOR
Sobhan
Rezayati
sobhan.rezayati@yahoo.com
2
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
AUTHOR
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20
ORIGINAL_ARTICLE
ZnFe2O4 nanoparticle: Synthesis and photocatalytic activity under UV-vis and visible light
In the present work, the ZnFe2O4 nanoparticle has been successfully synthesized. The obtained sample was characterized by X-ray diffraction (XRD), emission scanning electron microscopy (FE-SEM) and its optical property was examined by UV-Vis spectrophotometer. FE-SEM revealed that the particle size of the ZnFe2O4 of about 47 nm was synthesized. The photocatalytic performance under UV-Vis and visible light were evaluated by decolorization of congo red (CR) anionic dye solution. The UV-Vis and visible light irradiation source are a high pressure mercury lamp, 400 W and filament tungsten lamp 100 W respectively. The photocatalytic results show that the ZnFe2O4 sample can be 100% degrading (CR) dye solution after 30 and 120 min under UV-Vis and visible irradiation respectively
https://icc.journals.pnu.ac.ir/article_996_4816547ba11d4d83e6261cd5151237a8.pdf
2015-04-01
137
142
ZnFe2O4
photocatalyst
visible light
Congo red
Maryam
Movahedi
maria_movahedi@yahoo.com
1
Payame Noor University,Isfahan, IRAN
LEAD_AUTHOR
Fahimeh
Kazemi-Cheryani
2
Department of Chemistry, Payame Noor University
AUTHOR
Nahid
Rasouli
3
Department of Chemistry, Payame Noor University
AUTHOR
Hossein
Salavati
4
Department of Chemistry, Payame Noor University
AUTHOR
[1] Z. Zhang, W. Wang, Mater. Lett., 2014, 133, 212-215.
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ORIGINAL_ARTICLE
Oxidative aromatization of some 1,4-dihydropyridines by aqueous hydrogen peroxide in ethanol
Some 3, 5-diacyl or 3,5-diester 1,4-dihydropyridines were oxidized to the corresponding pyridine derivatives using hydrogen peroxide in aqueous ethanol in the presence of potassium bromide and acetic acid as the catalysts. The reaction was carried out in ethanol and products were isolated in high to excellent yields. However, oxidation of 3,5-diacetyl 1,4-dihydropyridines is slower than 3,5-diester 1,4-dihydropyridines under the same condition. Furhermore, the reaction is facilitated by electron releasing groups on 4-substituent of dihydropyridine ring. The cheapness of reagent, high yielding, easy workup and mild condition makes this method a useful addition to the available method in organic synthesis. In addition, employment of clean oxidant H2O2 together with nontoxic solvent ethanol makes it friendly to the environment.
https://icc.journals.pnu.ac.ir/article_1004_01ad29650f520c3141e9903e643e1772.pdf
2015-04-01
143
147
3
5-Diester 1
4-dihydropyridines
5-diacetyl 1
4-dihydropyridine
Masoomeh
Abdoli
abdoli1356@yahoo.com
1
Azad university of arak
LEAD_AUTHOR
Maryam
Hajibabaiee
maryam_hajibabaei@yahoo.com
2
Islamic Azad University-Arak Branch. Arak, Iran
AUTHOR
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