Mahmoud Roushani
Department of Chemistry, University of Ilam, Ilam, Iran
[ 1 ] - Applicability of the Dendrimer-quantum Dot (Den-QD) Bioconjugate as a Novel Nanocomposite for Signal Amplification in the Fabrication of Cocaine Aptasensor
A selective aptasensor was developed using the electrochemical transduction method for the ultrasensitive detection of cocaine. In this method, dendrimer-quantum dot (Den-QD) bioconjugate was utilized as a specific nanocomposite to efficiently fabricate the aptasensor. CdTe QD, which carries highly significant properties, was immobilized on the surface of a glassy carbon electrode (GCE), and po...
[ 2 ] - Using Boehmite Nanoparticles as an Undercoat, and Riboflavin as a Redox Probe for Immunosensor Designing: Ultrasensitive Detection of Hepatitis C Virus Core Antigen
In this study a label-free electrochemical Immunosensor for ultrasensitive detection of Hepatitis C virus core antigen in serum samples was fabricated by using a simple approach. In this method a low-cost and sensitive immunosensor was fabricated based on a boehmite nanoparticles (BNPs) modified glassy carbon. The BNPs provide a specific platform with increased surface area which is capable of ...
[ 3 ] - Fabrication of an Electrochemical Immunosensor for Determination of Human Chorionic Gonadotropin Based on PtNPs/Cysteamine/AgNPs as an Efficient Interface
An ultrasensitive electrochemical immunosensor for the detection of tumor marker human chorionic gonadotropin (hCG) was developed with a limit of detection as low as 2 pg mL-1 in phosphate buffer. The Platinum nanoparticles (PtNPs) were electrodeposited to modify the gold surface and to increase enlarging the electrochemically active sites, resulting in the facilitation of electron exchange. Cy...
[ 4 ] - Immunoassay for Human Chorionic Gonadotropin Based on Glassy Carbon Electrode Modified with an Epitaxial Nanocomposite
A highly sensitive electrochemicalimmunosensor was developed to detect hCG based on immobilization ofhCG-antibody (anti-hCG) onto robust nanocomposite containing Gr, Chit,1-methyl-3-octyl imidazolium tetra fluoro borate ionic liquid (IL)(Gr-IL-Chit). AuNPs were used to immobilize hCG antibody on the modifiedelectrode. The amine groups of the antibody are cova...
[ 5 ] - Efficient Determination of Butylated Hydroxyanisole Using an Electrochemical Sensor Based on Cobalt Oxide Nanoparticles Modified Electrode
A simple and reliable electrochemical sensor based on cobalt oxide nanoparticles modified glassy carbon electrode (GCE/CoOxNPs) for determination of butylated hydroxyanisole is presented here. The nanoparticles were fabricated by electrodepositing method. The modified electrode shows excellent catalytic activity toward butylated hydroxyanisole oxidation in pH 12.0 phosphate buffer solution (PBS...
[ 6 ] - Influence of amine group on the adsorptive removal of basic dyes from water using two nanoporous isoreticular Zn(II)-based metal organic frameworks
Dyes are the most abundant hazardous components existing in the environment because of their extensive use in industries. So, in the present study, two isoreticular Zn(II)-MOFs, TMU-16 and TMU-16-NH2, were used for the adsorptive removal of harmful cationic dyes from aquatic medium. In order ...
[ 7 ] - تخریب فوتوکاتالیستی ماده رنگزای آرسنازو (III) به وسیله نقاط کوانتومی گرافن تحت نور مرئی
در این مطالعه از نقاط کوانتومی گرافن (GQDs) به عنوان نانو مواد جدید و بسیار کارآمد برای تخریب ماده رنگزای آرسنازو تحت نور مرئی استفاده شده است. سنتز نقاط کوانتومی گرافن با روش پیرولیز انجام شد و جهت بررسی GQDs تهیه شده، از میکروسکوپ الکترونی عبوری (TEM) و طیف جذبی مرئی- فرابنفش استفاده شد. تاثیر برخی عوامل تجربی مانند pH محلول ماده رنگزا، زمان تماس، غلظت ماده رنگزای آرسنازو (III) و مقدار نقاط ک...
[ 8 ] - سنتز، شناسایی ساختاری و ارزیابی فعالیت کاتالیزور نوری نقاط کوانتومی CdTe با فعال‌سازی به وسیله نور مرئی برای تخریب و رنگ‌زدایی کاتالیزور نوری آلاینده‌های آلی
نقاط کوانتومی CdTe با روش شیمیایی مرطوب سنتز شدند و به عنوان کاتالیزوز نوری پاسخگو به نور مرئی برای تخریب آلاینده مواد رنگزا مورد بررسی قرار گرفت. اندازه ذرات با اضافه‌کردن تیو گلیکولیک اسید ((TGA به عنوان عامل پوشاننده کنترل شد. مشخصات ساختاری نقاط کوانتومی CdTe با استفاده از پراش پرتو X (XRD) و میکروسکوپ الکترونی عبوری (TEM)، طیف جذبی و فلوئورسانس بررسی شد. اندازه متوسط نقاط کوانتومی CdTe، 2....
[ 9 ] - Characterization of Polypyrrole-hydroxyethylcellulose/TiO2 Nanocomposite: Thermal Properties and AFM Analysis
Polypyrrole–hydroxyethylcellulose/TitaniumDioxide (PPy-HEC/TiO2) nanocomposite was synthesized via in situ chemical oxidative polymerization method at room temperature in water and water/ethyl acetate solution in the presence of ferric chloride (FeCl3). The effect of TiO2 nanoparticles and HEC on the characteristics of products such as thermal stability and morphology was investigated. The fabr...
[ 10 ] - The potentiality of the functionalized nitrogen and thiol-doped graphene quantum dots (GQDs-N-S) to stabilize the antibodies in the designing of human chorionic gonadotropin immunosensor
In this study, for the first time, a simple immunosensor for ultrasensitive recognition of Human Chorionic Gonadotropin (hCG) in serum samples was fabricated by exploiting a simple approach. In this method, a low-cost and sensitive immunosensor was fabricated based on QDs-N-S/Au nanoparticles (NPs) modified Screen-Printed Carbon Electrode (SPCE). It seems that, QDs-N-S/Au NPs/ antibody as a bio...
[ 11 ] - Development of electrochemical aptasensor based on gold nanorod and its application for detection of aflatoxin B1 in rice and blood serum sample
Aflatoxins are a group of fungal mycotoxins produced mainly by molds, e.g. Aspergillus flavus and Aspergillus parasiticus. Among Aflatoxins, Aflatoxin B1 (AFB1) is the most toxic. Therefore, there is a prompt need for determination of AFB1 in food products. This paper reports an electrochemical aptasensor for accurate determination of AFB1, which was constructed by the using gold nanorod sensin...
[ 12 ] - Development of ultrasound-assisted emulsification microextraction for the determination of trace zinc and copper by flame atomic absorption spectrometry
In this work, we developed a method based on ultrasound-assisted emulsification microextraction (USAEME) for the determination of zinc and copper by flame atomic absorption spectrometry (FAAS). The method is based on the use of the organic solvent carbon tetrachloride (CCl4) as an extraction solvent. In order to obtain a high enrichment factor, the effect of different parameters affecting the c...
[ 13 ] - Electroanalytical sensing of Asulam based on nanocomposite modified glassy carbon electrode
In this study a facile approach to employ Copper nanoparticle (CuNPs) and multi-walled carbon nanotubes (MWCNT) as the nanomaterial for selective detection of asulam have been investigated. This work reports the electrocatalytic oxidation of asulam on glassy carbon electrodes (GCE) modified with multi-walled carbon nanotubes (MWCNT), ionic liquids (IL), chitosan (Chit) and copper nanoparticles ...
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