A5072940637- Gas Sensing Nanomaterials and Sensors
- Supercapacitor Materials and Fabrication
- Analytical Chemistry and Sensors
- Conducting polymers and applications
- Advanced Chemical Sensor Technologies
- Catalytic Processes in Materials Science
- ZnO doping and properties
- Advancements in Battery Materials
- Industrial Gas Emission Control
- MXene and MAX Phase Materials
- Advanced Sensor and Energy Harvesting Materials
- Electrochemical sensors and biosensors
- Advanced Memory and Neural Computing
- Quantum Dots Synthesis And Properties
- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Advanced Semiconductor Detectors and Materials
- Ga2O3 and related materials
- Nanowire Synthesis and Applications
- Graphene and Nanomaterials Applications
- Silicon Nanostructures and Photoluminescence
- Electrocatalysts for Energy Conversion
- Thin-Film Transistor Technologies
- 2D Materials and Applications
- Electrochemical Analysis and Applications
Islamic Azad University, Science and Research Branch
2015-2024
Islamic Azad University South Tehran Branch
2017-2019
In this study, the three structures of symmetric paper supercapacitors based on carbon nanotubes (CNTs), graphite nanoparticles (GNPs) and graphene electrodes have been fabricated. was used polyvinyl alcohol (PVA)/phosphoric acid (H3PO4) as a gel electrolyte BaTiO3 film separator film. The nanomaterials, surface, electrode films were characterized by scanning electron microscopy (SEM) transmission microscope (TEM). specific capacitance using charge-discharge technique C-V curves at voltage...
In this study, fast gas adsorbent nanocomposites based on the carbon nanotubes (CNTs)/titanium dioxide (TiO2)/copper oxide (CuO)/Zeolite (CNTs/TiO2/CuO/Zeolite) and CNTs/TiO2 structures for nitrogen (NO2) removal have been investigated. The nanocomposite films were deposited glass substrate using push coating method. characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET). BET test was carried out to study total surface diameter of pores...
Comparison of power density as a function energy for supercapacitors based on Ni-materials/carbon nanocomposites and keyword analysis Ni material-based using VOSviewer.
Abstract We investigated the multifaceted gas sensing properties of porous silicon thin films electrodeposited onto (100) oriented P-type wafers substrates. Our investigation delves into morphological, optical properties, and capabilities, aiming to optimize their use as efficient sensors. Morphological analysis revealed development unique surfaces with distinct characteristics compared untreated sample, yielding substantially rougher yet flat surfaces, corroborated by Minkowski Functionals...
This study investigated a gas adsorbent film based on the AC/MgO/Fe2O3/TiO2/ZnO/Zeolite nanocomposite for NO, CO, and SO2 removal. The adsorption in absorbent presence absence of plasma at room temperature have been compared. results indicated rapid reduction CO concentration, decreasing from 1500 ppm to 200 (in plasma) ppm–50 within just 1 minute. notably enhanced removal efficiencies pollutant gases showed efficiency 92 %, 95 97 % SO2, gas, respectively. Furthermore, finding reveals that...
In this study, fabrication of highly sensitive PdNPs/SiO2/Si hydrogen gas sensor using experimental and theoretical methods has been investigated. Using chemical method the PdNPs are synthesized characterized by X-ray diffraction (XRD). The average size is 11 nm. thickness oxide film was 20 nm surface analyzed Atomic-force microscopy (AFM). C-V curve for in 1% concentration at room temperature reported. response time recovery were 1.2 s 10 respectively. (R%) MOS capacitor 96%. showed very...
In this paper, the supercapacitor based on carbon nanotubes (CNTs) electrodes has been fabricated.The Polyvinylidene Fluoride (PVDF) and Polyvinyl Alcohol (PVA) were used as a gel electrolyte.The electrolytes thin films characterized by Scanning Electron Microscopy (SEM) Transmission (TEM). The specific Capacitance (Cs) of CNTs-based measured using cyclic voltammetry galvanostatic methods. For scan rate, 20 mV s-1 Cs was 173 F g-1.Using electrochemical impedance spectroscopy Nyquist curve...
Hydrogen sensors are micro/nano-structure that used to locate hydrogen leaks. They considered have fast response/recovery time and long lifetime as compared conventional gas sensors. In this paper, fabrication of sensitive capacitive-type sensor based on Ni thin film has been investigated. The C-V curves the in different concentrations reported.Dry oxidation was done thermal chemical vapor deposition furnace (TCVD). For 5 min, oxide thickness 15 nm for 10 it 20 nm. a catalytic metal...
In this study, three-type paper supercapacitors based on the polyvinylidene fluoride (PVDF) and polyvinyl alcohol (PVA)/phosphoric acid (H3PO4) gel electrolytes graphite nanoparticles (GNPs) electrodes have been fabricated. The films coated using push coating then characterized by scanning electron microscopy (SEM). two types of supercapacitors, PVDF electrolyte film, a layer PVA/water BaTiO3 as separator film has coated. specific capacitance cyclic voltammetry (CV) galvanostatic...
In this study, two hydrogen sensors with Pd/SiO 2 /Si and Ni/SiO structures have been fabricated. Palladium nanoparticles are synthesized then deposited on the oxide surface using spin coating. Capacitance–voltage curves for sensor at room temperature 140[Formula: see text]C in pure nitrogen 1% H –N mixture described. The time required reaching 90% of steady-state signal magnitude ([Formula: text]) capacitor was 1.4[Formula: text]s 90 s. interval recovery from to 10% text] 14[Formula:...
In this work, a hydrogen capacitor nanosensor with palladium nanoparticles (PdNPs) electrode based on metal–oxide–semiconductor structure has been fabricated. The sensor fabricated the n-type silicon substrate an oxide film thickness of 50 nm. PdNPs are synthesised and then deposited surface using spin coating. characterised by transmission electron microscope UV spectrum. Also, morphology is atomic force microscope. response time recovery have explained at room temperature. interval to 90%...
Purpose This study aims to investigate the fabrication of hydrogen gas sensor based on metal–oxide–semiconductor (MOS) microstructure. The palladium nanoparticles (PdNPs) as gate metal have been deposited oxide film using spin coating. Design/methodology/approach PdNPs and surface were analyzed Transmission electron microscopy. capacitance-voltage (C-V) curves for MOS in 1, 2 4 per cent concentration 100 KHz frequency at room temperature reported. Findings response times 2.5 s, 1.5 s 1...
In this study Al-doped Zinc Oxide (AZO) thin films were successfully deposited on the flexible Polymethyl methacrylate (PMMA) substrate by RF magnetron sputtering. The effects of power crystal structure, morphology, thickness and optical properties AZO have been investigated. analyzed using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), DEKTAK 3 profilometer, UV–Visible spectroscopy room temperature photoluminescence (PL) spectroscopy. XRD patterns show that...