Search results for: Omid Amiri

Items from 1 to 20 out of 39 results

article

Dy₂BaCuO₅/Ba₄DyCu₃O_9.09 S‐scheme heterojunction nanocomposite with enhanced photocatalytic and antibacterial activities

Seyede Raheleh Yousefi, Mojgan Ghanbari, Omid Amiri, Zeynab Marzhoseyni, more

Journal of the American Ceramic Society > 104 > 7 > 2952 - 2965

Semiconductor heterogeneous photocatalysis has been received much attention from the scientific and researchers in the last decade. The combination of two semiconductors with various energy diagram can dramatically enhance the lifetime and separation of the charge carriers, restrain photogenerated electron‐hole recombination, and considerably enhance photocatalytic performance as compared with other...

article

Novel flower‐like Sn–Cu and cactus‐like Sn–Ag nanocatalysts for photo catalytically removal of toxic pollutant

Riyadh Zendin Mawlud, Sangar S. Ahmed, Sobhan Mortazavi‐Derazkola, Omid Amiri, more

Applied Organometallic Chemistry > 34 > 8 > n/a - n/a

In this study, dendrite‐like Sn nanocomposites were achieved by engineering the synthesis parameters. The dendritic Sn nanostructures show higher photocatalytic activity compared to nanoplate Sn and hierarchical Sn nanostructures. Flower‐like Sn–Cu and cactus‐like Sn–Ag nanostructures were prepared to improve the photocatalytic activity of Sn nanostructures. Adding Cu and Ag improved the photocatalytic...

article

Novel NiFe/Si/Au magnetic nanocatalyst: Biogenic synthesis, efficient and reusable catalyst with enhanced visible light photocatalytic degradation and antibacterial activity

Mina Shirzadi‐Ahodashti, Mohammad Ali Ebrahimzadeh, Omid Amiri, Ali Naghizadeh, more

Applied Organometallic Chemistry > 34 > 4 > n/a - n/a

The aim of this paper is to biosynthesize NiFe₂O₄/SiO₂/Au (NiFe/Si/Au) magnetic nanocatalyst using the sonochemical method. This is the first study to synthesize this compound using this method. To obtain optimum morphology and size of products, the synthesis was performed in the presence of polyvinylpyrrolidone, maltose, glucose, and fructose as capping agents and Crataegus pentagyna leaf extract...

article

Sonochemical synthesis, characterization and application of PrVO4 nanostructures as an effective photocatalyst for discoloration of organic dye contaminants in wastewater

Rozita Monsef, Maryam Ghiyasiyan-Arani, Omid Amiri, Masoud Salavati-Niasari

Ultrasonics Sonochemistry > 2020 > 61 > C

In the current research, various conventional chemical preparation methods without ultrasound aid (precipitation, microwave, and hydrothermal) were compared with sonochemical procedure and were performed for providing of PrVO ₄ nanostructures using Schiff-base ligands. The small size products with monodisperse particles (~39 nm) optimized by sonochemical fabrication method and using H ₂ acacpn ligand...

article

BaMnO3 nanostructures: Simple ultrasonic fabrication and novel catalytic agent toward oxygen evolution of water splitting reaction

Sousan Gholamrezaei, Mojgan Ghanbari, Omid Amiri, Masoud Salavati-Niasari, more

Ultrasonics Sonochemistry > 2020 > 61 > C

In the current paper, the main aim is to fabricate the BaMnO ₃ nanostructures via the sonochemical route. The various factor, including precursors, reaction time and power of sonication can affect the shape, size, and purity of the samples. We utilized X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR),...

article

Effective removal of organic pollution by using sonochemical prepared LaFeO3 perovskite under visible light

Pourya Mehdizadeh, Omid Amiri, Somaye Rashki, Masoud Salavati-Niasari, more

Ultrasonics Sonochemistry > 2020 > 61 > C

In the present work, LaFeO ₃ perovskite was prepared via ultrasonic probe with power of 60 W and frequency of 18 KHz. LaFeO ₃ nanorods were formed when sonication time was 20 min. In this research, green materials including corn, starch, and rice were used to control the size, morphology, and purity of final products. As-prepared LaFeO ₃ nanostructures were used to purify water containing organic...

article

CdSnO3-graphene nanocomposites: Ultrasonic synthesis using glucose as capping agent and characterization for electrochemical hydrogen storage

Maryam Masjedi-Arani, Maryam Ghiyasiyan-Arani, Omid Amiri, Masoud Salavati-Niasari

Ultrasonics Sonochemistry > 2020 > 61 > C

Nanoscale cadmium stannate (CdSnO ₃ ) structures were productively synthesized via a facile and rapid sonochemical route using an eco-friendly capping agent of glucose. In order to optimize the size and structure of products, the various effective factors were inquired such as ultrasound waves, calcination temperature and solvent. The all samples were synthesized under ultrasonic probe for 30 min...

article

Electro-spinning of cellulose acetate nanofibers/Fe/carbon dot as photoluminescence sensor for mercury (II) and lead (II) ions

Shahla Ahmadian-Fard-Fini, Davood Ghanbari, Omid Amiri, Masoud Salavati-Niasari

Carbohydrate Polymers > 2020 > 229 > C

The aim of this work is synthesis of magnetic and photoluminescence (PL) nano-fibers for detection of mercury (II) and lead (II) ions that are toxic and their detection are necessary. Prepared nanoparticles are controllable by external magnetic field, so their threat is much lesser than non-magnetic material. Firstly, iron nanoparticles were achieved with ball milling procedure and cellulose acetate...

article

Synthesis of CeO₂/Ag/Ho nanostructures in order to improve photo catalytic activity of CeO₂ under visible light

Mohammad Ebadi, Hakimeh Teymourinia, Omid Amiri, Masoud Salavati-Niasari

Journal of Materials Science: Materials in Electronics > 2018 > 29 > 10 > 8817-8821

In one sun (Air mass 1.5), the amount of light that reaches earth’s surface is around 45% of visible and 3–5% of the UV. Therefore it is important to prepare visible driven photo-catalyst. CeO₂ is highly potential photo-catalyst that its wide band gap limits its application in visible light. Here, its photo-catalytic activity was improved from 10 to 20% for methyl orange and Rhodamin B to 72 and 83%,...

article

Surfactant free synthesis of Sr₂CeO₄ nanostructures and their application in removal of organic pollutions

Farshad Beshkar, Omid Amiri, Zahra Salehi, Masoud Salavati-Niasari

Journal of Materials Science: Materials in Electronics > 2018 > 29 > 8 > 6978-6984

In current work, surfactant free synthesis of Sr₂CeO₄ nanostructures by co-precipitation process were reported. This method require lower firing temperature (700 °C) compare to the previous reports (above 1000 °C). This study shows that by controlling the reaction conditions such as kind of precipitating agent, surfactant and calcination temperature, the Sr₂CeO₄ nanostructures with various morphologies...

article

Facile synthesis of graphene quantum dots from corn powder and their application as down conversion effect in quantum dot-dye-sensitized solar cell

Hakimeh Teymourinia, Masoud Salavati-Niasari, Omid Amiri, Mostafa Farangi

Journal of Molecular Liquids > 2018 > 251 > C > 267-272

Graphene quantum dots are interesting materials that are currently attracting world-wide scientific and technological interest because of their unique optical properties. In this research, graphene quantum dots were prepared from corn powder and were applied in DSSCs as down conversion materials. These prepared graphene quantum dots convert UV light to 450 and 520nm light which favorable for DSSCs...

article

Synthesis of CeO2/Au/Ho nanostructures as novel and highly efficient visible light driven photocatalyst

Mohammad Ebadi, Omid Amiri, Mohammad Sabet

Separation and Purification Technology > 2018 > 190 > C > 117-122

Only 3–5% of the UV photon flux reaching the earth’s surface, therefore it would be hugely beneficial to extend the light absorption of CeO₂ to the visible light region. The present work is focused on the CeO₂/Au/Ho nanostructures to improve photo-catalytic activity of CeO₂ under visible light. In the other word, photo-catalytic activity of CeO₂ is improved by plasmonic effect of gold and co- sensitizer...

article

Green synthesis of magnetic Fe3O4/SiO2/HAp nanocomposite for atenolol delivery and in vivo toxicity study

Sobhan Mortazavi-Derazkola, Masoud Salavati-Niasari, Hossein Khojasteh, Omid Amiri, more

Journal of Cleaner Production > 2017 > 168 > C > 39-50

In the present study, magnetically Fe₃O₄/SiO₂/hydroxyapatite (Fe₃O₄/SiO₂/HAp) nanocomposites were synthesized and modified with 3-aminopropyl triethoxysilane (APTES) using fructose as a green capping agent. The effect of different capping agent (such as fructose and glucose) and calcination temperature were investigated to reach optimum condition. The as-prepared nanocomposites were characterized...

article

Design and fabrication of a high performance inorganic tandem solar cell with 11.5% conversion efficiency

Omid Amiri, Noshin Mir, Fatemeh Ansari, Masoud Salavati-Niasari

Electrochimica Acta > 2017 > 252 > C > 315-321

Tandem solar cell is a design that combines two types of solar cells to benefit their advantages. We show a new concept for achieving highly efficient dye sensitized and quantum dot tandem solar cells. The new tandem cell further enhances the performance of the device, leading to a power conversion efficiency more than 11% under 1.5 Air Mass. To the best of our knowledge, this is the first time that...

article

Synthesis of graphene quantum dots from corn powder and their application in reduce charge recombination and increase free charge carriers

Hakimeh Teymourinia, Masoud Salavati-Niasari, Omid Amiri, Hossein Safardoust-Hojaghan

Journal of Molecular Liquids > 2017 > 242 > C > 447-455

GQDs have been synthesized by using a novel and green precursor (corn powder). Furthermore, GQDs/TiO₂ composite has been prepared by using graphene quantum dots as capping agent. Incorporation of graphene quantum dots in TiO₂ nanoparticles reduce charge recombination, extend the absorption spectrum of TiO₂ to the visible region, and increase the accessible surface area of TiO₂ nanoparticles. Therefore,...

article

Preparation of highly luminescent nitrogen doped graphene quantum dots and their application as a probe for detection of Staphylococcus aureus and E. coli

Hossein Safardoust-Hojaghan, Masoud Salavati-Niasari, Omid Amiri, Mohammad Hassanpour

Journal of Molecular Liquids > 2017 > 241 > C > 1114-1119

The rapid detection of bacterial pathogens is very important for medical diagnostics, biosecurity, transportation and the prevention of global pandemics. Here graphene quantum dots (GQDs) are prepared by using citric acid and ethylenediamine and hydrothermal as starting materials and synthesis method. Product is characterized by X-ray diffraction analysis, FT-IR spectroscopy, Transmission electron...

article

Synthesis of ZnSnO3 nanostructures by using novel gelling agents and their application in degradation of textile dye

Farshad Beshkar, Omid Amiri, Zahra Salehi

Separation and Purification Technology > 2017 > 184 > C > 66-71

In this work, ZnSnO₃ nanostructures was prepared by pechini method and new gelling agent. Herein we used dien and Tepa as gelling agent. In addition, maleic acid, benzoic acid, and Trimesic acid were used as hydrolysis agent. Furthermore, the effect of these gelling agent and hydrolysis agent on the size of final products were investigated and as prepared ZnSnO₃ nanostructures were used to degrade...

article

Palladium-free and phosphine-free Sonogashira coupling reaction of aryl halides with terminal alkynes catalyzed by boehmite nanoparticle-anchored Cu(I) diethylenetriamine complex

Mohammad Bakherad, Rahele Doosti, Mahdi Mirzaee, Khosrow Jadidi, more

Research on Chemical Intermediates > 2017 > 43 > 12 > 7347-7363

In this work, a novel diethylenetriamine-functionalized-boehmite nanoparticle-supported Cu(I) catalyst is synthesized. The catalyst prepared is then characterized by FT-IR spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction spectroscopy, and inductively coupled plasma techniques. The catalyst prepared shows great activity in the Sonogashira coupling reaction...

article

Facile synthesis of NiCo₂O₄ with the aid of amino acid to achieve the highest carriers for degradation of Acid violet 7

Farshad Beshkar, Omid Amiri, Seyed Ali Hashemizadeh, Zahra Salehi

Journal of Materials Science: Materials in Electronics > 2017 > 28 > 20 > 15435- 15441

The present work is focused on the engineering of the morphology of NiCo₂O₄ nanostructure to achieve the highest photocatalytic activity. To achieve this goal, the effect of different parameters such as type of amino acid (including GLYCINE, VALINE, GLUTAMINE, LYSINE, and PHENYLEAL ANINE) as gelling agent, its ratio and calcination temperature are investigated. NiCo₂O₄ prepared using GLUTAMINE (Calcination...

article

Fabrication and characterization of Fe3O4@SiO2@TiO2@Ho nanostructures as a novel and highly efficient photocatalyst for degradation of organic pollution

Sobhan Mortazavi-Derazkola, Masoud Salavati-Niasari, Omid Amiri, Ali Abbasi

Journal of Energy Chemistry > 2017 > 26 > 1 > 17-23

In this work we synthesize a novel and highly efficient photocatalyst for degradation of methyl orange and rhodamine B. In addition, a new method for synthesis of Fe₃O₄@SiO₂@TiO₂@Ho magnetic core-shell nanoparticles with spherical morphology is proposed. The crystal structures, morphology and chemical properties of the as-synthesized nanoparticles were characterized using Fourier transform infrared...

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Journal of Materials Science: Materials in Electronics (6)
Electrochimica Acta (4)
Journal of Cluster Science (4)
Materials Science in Semiconductor Processing (4)
Ultrasonics Sonochemistry (4)
Journal of Molecular Liquids (3)
Applied Organometallic Chemistry (2)
Separation and Purification Technology (2)
Asia‐Pacific Journal of Chemical Engineering (1)
Bulletin of Materials Science (1)
Carbohydrate Polymers (1)
Journal of Cleaner Production (1)
Journal of Energy Chemistry (1)
Journal of the American Ceramic Society (1)
Materials Letters (1)
Research on Chemical Intermediates (1)
Superlattices and Microstructures (1)
Toxicology Letters (1)
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INFONA - science communication portal

Search results for: Omid Amiri

Dy₂BaCuO₅/Ba₄DyCu₃O_9.09 S‐scheme heterojunction nanocomposite with enhanced photocatalytic and antibacterial activities

Novel flower‐like Sn–Cu and cactus‐like Sn–Ag nanocatalysts for photo catalytically removal of toxic pollutant

Novel NiFe/Si/Au magnetic nanocatalyst: Biogenic synthesis, efficient and reusable catalyst with enhanced visible light photocatalytic degradation and antibacterial activity

Sonochemical synthesis, characterization and application of PrVO4 nanostructures as an effective photocatalyst for discoloration of organic dye contaminants in wastewater

BaMnO3 nanostructures: Simple ultrasonic fabrication and novel catalytic agent toward oxygen evolution of water splitting reaction

Effective removal of organic pollution by using sonochemical prepared LaFeO3 perovskite under visible light

CdSnO3-graphene nanocomposites: Ultrasonic synthesis using glucose as capping agent and characterization for electrochemical hydrogen storage

Electro-spinning of cellulose acetate nanofibers/Fe/carbon dot as photoluminescence sensor for mercury (II) and lead (II) ions

Synthesis of CeO₂/Ag/Ho nanostructures in order to improve photo catalytic activity of CeO₂ under visible light

Surfactant free synthesis of Sr₂CeO₄ nanostructures and their application in removal of organic pollutions

Facile synthesis of graphene quantum dots from corn powder and their application as down conversion effect in quantum dot-dye-sensitized solar cell

Synthesis of CeO2/Au/Ho nanostructures as novel and highly efficient visible light driven photocatalyst

Green synthesis of magnetic Fe3O4/SiO2/HAp nanocomposite for atenolol delivery and in vivo toxicity study

Design and fabrication of a high performance inorganic tandem solar cell with 11.5% conversion efficiency

Synthesis of graphene quantum dots from corn powder and their application in reduce charge recombination and increase free charge carriers

Preparation of highly luminescent nitrogen doped graphene quantum dots and their application as a probe for detection of Staphylococcus aureus and E. coli

Synthesis of ZnSnO3 nanostructures by using novel gelling agents and their application in degradation of textile dye

Palladium-free and phosphine-free Sonogashira coupling reaction of aryl halides with terminal alkynes catalyzed by boehmite nanoparticle-anchored Cu(I) diethylenetriamine complex

Facile synthesis of NiCo₂O₄ with the aid of amino acid to achieve the highest carriers for degradation of Acid violet 7

Fabrication and characterization of Fe3O4@SiO2@TiO2@Ho nanostructures as a novel and highly efficient photocatalyst for degradation of organic pollution

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