Article
Chemistry, Inorganic & Nuclear
Habib Chenaina, Charfeddine Messaadi, Jalila Jalali, Hatem Ezzaouia
Summary: This study focuses on sol-gel derived SnO2-TiO2 thin films deposited on silicon wafer type Si (100) substrate using spin coating technique, followed by heat treatments at four different temperatures. XRD characterization reveals the formation of nano-crystalline phase at 400 degrees C and further crystallization with increasing annealing temperature. Optical and dielectric properties analysis demonstrates universal many body response over a broad frequency range, presenting variations in structure and performance of the films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Abdelhafid Mahroug, Ibrahim Mahroug, Sarra Berra, Djamel Allali, Samir Hamrit, Abdelhamid Guelil, Abdelhalim Zoukel, Shafi Ullah
Summary: In this research, ZnO thin films were synthesized using different solvents and their effects on the film's properties were studied. It was found that ZnO films exhibited high transparency, fibrous structure, and improved structural and optical properties when synthesized with ZnO-2-PrOH solvent.
Article
Engineering, Multidisciplinary
Salma Ahmed Al-Zahrani, Imran Khan
Summary: A new and novel heavy metal ion selective organic-inorganic composite was successfully prepared and used for the preparation of an ion-selective membrane electrode with excellent selectivity for Hg2+ ions.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
V Poojitha, S. Mahalakshmi, K. Santhi, S. Nithyanatham
Summary: In this study, multiferroic bismuth ferrite was prepared using the sol-gel method and its structural and optical characteristics were examined. X-ray diffraction and Fourier transform infrared analysis were used to study the structure, while field emission scanning electron microscopy was used to observe the morphology. The research found that bismuth ferrite has potential importance in applications such as high dielectric constant capacitors and hard disc components.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
J. Gajendiran, S. Gnanam, C. Parthasaradhi Reddy, G. Ramesh Kumar, V. C. Bharath Sabarish, S. Gokul Raj, K. Ramachandran, V. P. Senthil, V. Gopi
Summary: In this paper, BiFeO3, YMnO3, and BiFeO3-YMnO3 compounds were synthesized and their structural, morphological, and light absorption characteristics were compared for the first time.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Diana Kichukova, Ivanka Spassova, Aneliya Kostadinova, Anna Staneva, Daniela Kovacheva
Summary: In this study, nanocomposites of reduced graphene oxide (RGO) with Cu and Ag were prepared using a facile and environmentally friendly method. The composites exhibited good antimicrobial activity and high cytotoxicity, making them potential candidates for antimicrobial and anticancer agents.
Article
Engineering, Chemical
Sonu Kumar, R. D. Kaushik, L. P. Purohit
Summary: In this study, hetero-nanostructured Se-ZnO nanocomposites incorporated with different weight percentages of RGO were successfully used for enhanced photocatalytic degradation and complete mineralization of phenolic compounds and organic dyes. The optimized nanocomposite structure and optical properties effectively hindered charge carrier recombination, leading to the production of additional reactive oxygen species for efficient degradation of organic pollutants in water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Saruchi Rani, Surbhi Verma, Bharti Sharma, Sushil Kumar
Summary: This communication presents the synthesis and characterization of Sn1-xCexO2 (0 <= x <= 1) nanocomposites using a cost effective sol-gel route and spin coating technique. The annealed samples were analyzed using various characterization tools to determine their structural, optical, and thermal properties. The results show the presence of tetragonal SnO2 and cubic CeO2 phases in the annealed samples. The study also investigated the variations in crystallite size, lattice constants, and other parameters with composition. The optical properties, such as complex dielectric constant, extinction coefficient, and refractive index, were studied using optical absorption spectroscopy. Thermal analysis provided insights into thermodynamic parameters such as enthalpy, activation energy, entropy, and Gibbs free energy.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Gaurav K. Upadhyay, Vinod Kumar, L. P. Purohit
Summary: Different volume compositions of CdO:TiO2 were synthesized and optimized for solar cell application. Increasing the volume fraction of TiO2 in CdO resulted in higher peak intensity of cubic structure of CdO and decreased optical band gap. The nanocomposites successfully reduced the toxicity of CdO and enhanced conductivity by adding TiO2, leading to improved fill factor and conversion efficiency in the optimized device.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Hafiz Muhammad Asif Javed, Muhammad Adnan, Akbar Ali Qureshi, Sofia Javed, Muhammad Adeel, Muhammad Aftab Akram, M. Shahid, M. Irfan Ahmad, M. Afzaal, Hisham S. M. Abd-Rabboh, M. Arif
Summary: The facile synthesis of TiO2 nanoparticles and ZnO/Mg-doped TiO2 nanoparticles was successfully achieved using the sol-gel technique, and the synthesized samples were characterized for various properties. The study revealed that Mg and ZnO doping had significant effects on the size and crystalline nature of TiO2 nanoparticles, as well as on the energy gap values and thermal stability. These optimized materials show promise for future optoelectronic devices.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Ling Chen, Xinfu Cao, Jianbing Gao, Weidong He, Jie Liu, Yingbo Wang, Xiang Zhou, Jinpeng Shen, Binbin Wang, Yao He, Daquan Tan
Summary: In this study, nitrated bacterial cellulose was used to prepare nanocomposite energetic materials through a sol-gel method and freeze-drying technology. The materials exhibited reduced peak temperature and substantial heat release during decomposition. The research also explored the mechanism of thermal decomposition and suggested the presence of cyclic catalytic decomposition between the gel matrix and explosives.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jan Mrazek, Lubomir Spanhel, Vlastimil Matejec, Ivo Barton, Robert Dzunda, Viktor Puchy
Summary: The study presents a sol-gel approach for preparing DBRs using nanocrystalline Zn2TiO4 and amorphous SiO2 xerogel films, and investigates their structural and optical properties at different annealing temperatures. The films prepared reflect over 97% of incident light at 980 nm and can be used for constructing DBRs operating in the near-infrared region.
Article
Materials Science, Ceramics
Shadpour Mallakpour, Mina Naghdi
Summary: A bone scaffold was fabricated using a hybrid of TiO2@LDH to leverage the advantages of both nanostructures, with LDH providing a suitable bed for TiO2 nanoparticles and Alg embedding them for stability. The scaffold showed excellent biomineralization and antibacterial properties, making it a promising candidate for bone tissue engineering.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Banu Sungu Misirlioglu, Volkan Kurt, Hilal Calik, Oznur Cakir, Rabia Cakir-Koc
Summary: Cobalt ferrite and magnesium oxide nanoparticles were synthesized and mixed to form nanocomposites. The nanocomposites exhibited a pure spinel ferrite structure and a single phase of magnesium oxide nanoparticles without impurities. In vitro cytotoxicity tests showed that the nanocomposites had high cell viability. Additionally, the nanocomposites demonstrated a reduced dielectric constant and dielectric loss, indicating their potential for energy storage applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Inorganic & Nuclear
Sana Mansoor, Sammia Shahid, Kinza Ashiq, Norah Alwadai, Mohsin Javed, Shahid Iqbal, Urooj Fatima, Sabah Zaman, Muhammad Nazim Sarwar, Fwzah H. Alshammari, Eslam B. Elkaeed, Nasser S. Awwad, Hala A. Ibrahium
Summary: Zinc-doped magnesium oxide nano-flakes were manufactured using the sol-gel process and dispersed in chitosan solution to create a nanocomposite thin film. Glucose oxidase was immobilized on the thin film to form a nano-sensor.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Maryam Zargarpour, Farid Jamali-Sheini, Mohsen Cheraghizade
Summary: This research investigated the effect of iron dopants on the physical properties of copper selenide nanoparticles, finding that iron concentrations affect crystallite size and strain, leading to an increased optical energy band gap. Electrical studies revealed the presence of the SCLC mechanism in iron-doped samples, with carrier mobility increasing as Fe concentrations decrease.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Seyedeh Laleh Mousavi, Farid Jamali-Sheini, Mohammad Sabaeian, Ramin Yousefi
Summary: In this study, un- and copper-doped tin sulfide nanoparticles were synthesized and added to polymer solar cells. The structural, optical, and electrical properties of the nanoparticles on cell performance were investigated. Results showed that adding SnS nanoparticles improved the performance of the cells.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Maryam Zebarjad, Farid Jamali-Sheini, Ramin Yousefi
Summary: The nanostructured iron pyrite films were deposited on FTO substrate by electrodeposition method, exhibiting cubic pyrite formation. The morphology of Sn-doped specimens remained unchanged at low Sn concentrations but changed at high concentrations. Photoluminescence spectra showed emission bands in the green and red regions, with an energy band gap of -1.63 eV. Optoelectronic measurements indicated p-type conductivity in the films, with photodetectors showing a significant response in the form of increased spectral range of visible light with minimum Sn concentration doping.
SOLID STATE SCIENCES
(2021)
Article
Engineering, Chemical
Mohammad Gharibshahi, Farid Jamali-Sheini, Ramin Yousefi
Summary: In this study, SnSe nanostructures prepared by the precipitation method were exposed to the irradiation of ultrasound waves and ultraviolet (UV) rays. The results showed that the irradiation affected the structural properties, emission bands, absorption spectra, energy band gap, responsivity, sensitivity, detectivity, mobility, and carrier concentration of the SnSe nanostructures.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Energy & Fuels
Mohammad Badrooj, Farid Jamali-Sheini, Naeimeh Torabi
Summary: Achieving a low-toxicity mixed Sn/Pb halide perovskite solar cell with higher performance and lower cost is still a major challenge. In this study, the element Zn was incorporated as a substitute cation for the toxic element Pb into the CH3NH3Sn0.25Pb0.75I3 perovskite compound, leading to improved crystal quality, surface coverage, grain size, and reduced non-radiative recombination mechanism. The findings provide a new area for further research on lead reduced hybrid perovskite solar cells.
Article
Chemistry, Physical
Elham Kharatzadeh, Marzieh Khademalrasool, Ramin Yousefi
Summary: This paper synthesized pristine SnSe and SnSe1 _ xSx nanostructures with different sulfur concentrations using a simple and environmentally-friendly co-precipitation method, and investigated the effect of sulfur concentration on the photovoltaic and photocatalytic properties of the nanostructures. The results show that sulfur concentration affects the crystallite size and strain of the nanostructures. Among the nanostructures, S(6%)-doped SnSe nanostructure exhibits significant photocatalytic activity in organic dye degradation and significant photovoltaic response under visible light. These results can be attributed to the reduction of crystal defects, electron-hole recombination, and the improvement of textural characteristics in the nanostructures.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Ceramics
Maryam Zebarjad, Farid Jamali-Sheini, Ramin Yousefi
Summary: In this study, nanostructured pyrite (FeS2) films doped with different concentrations of Zn were fabricated using the electrodeposition method. Photodetectors were made using FTO/TiO2/un- and Zn-doped FeS2/Au configurations for optoelectronic applications. The effects of Zn concentration and TiO2 buffer layer on device efficiency were investigated. Results showed that Zn doping increased photocurrent and conductivity, reduced recombination rate and defects, and enhanced carrier mobility. The device with the lowest Zn doping concentration exhibited the highest efficiency, with an EQE of 48.16%, an R of 206.30 mAW(-1), and a D* of 3.3x10(+9) (Jones) in the visible light spectrum.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Maryam Zamani, Farid Jamali-Sheini, Mohsen Cheraghizade
Summary: This research investigated the effect of Ag coating on the physical properties of mesostructured bismuth sulfide (Bi2S3) films for optoelectronic applications. The results showed that Ag coating reduced the morphology size on the surface of the film, decreased the optical energy band gap, and increased the carrier concentration and flat band potential. The study also revealed the presence of space-charge-limited current behavior in the free-coated device, indicating changes in the electronic band structure due to Ag coating. The addition of Ag coating enhanced the quality parameters of the photodetectors, and the response increased with longer wavelengths. Mesostructured Bi2S3 films have the potential to be used as self-powered and ultraviolet-to-visible range photodetectors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Behrouz Baghbanzadeh-Dezfuli, Farid Jamali-Sheini, Mohsen Cheraghizade
Summary: In this research, the effect of sulfur dopant concentrations on the physical properties of nanostructured antimony selenide films was investigated. It was found that sulfur dopant changed the size of nanoparticles on the film surface and improved the electrical and photodetection performance of the devices.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Behrouz Baghbanzadeh-Dezfuli, Farid Jamali-Sheini, Mohsen Cheraghizade
Summary: In this study, antimony selenide (Sb2Se3) nanostructure films were deposited by the electrodeposition method using deionized water and ethylene glycol as solvents. The films were analyzed and compared using different methods, and it was found that using ethylene glycol as a solvent resulted in more suitable stoichiometric ratio, enhanced uniformity, and compactness in the structure of Sb2Se3 films.
Article
Thermodynamics
Somayeh Kamalifar, S. M. Peyghambarzadeh, Shima Azizi, Farid Jamali-Sheini
Summary: Fouling is a major cause of energy loss in oil industry, leading to significant economic losses when oil operation units are shut down. There is currently no global or specific solution for reducing crude oil fouling. This study proposes an accurate and sensitive thermal method for fouling detection in crude oil systems, and investigates the impact of key operating parameters on fouling rate. The results show that heat flux, bulk temperature, and fluid velocity have direct or inverse relationships with fouling rate.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Materials Science, Multidisciplinary
Morteza Nouri, Hassanali Azimi, Abdolali Moghaddam Saray, Ramin Yousefi
Summary: The effects of S-doped g-C3N4 on the photocatalytic activity of CuxSey nanostructures were investigated. CuxSey/S-CN nanocomposites showed the highest performance in degrading methylene blue dye under visible light, with over 80% degradation in just 30 minutes. Factors such as higher carrier, greater porosity, and formation of a Z-scheme contributed to the enhanced performance of CuxSey/S-CN nanocomposites compared to CuxSey/g-CN nanocomposites. Mott-Schottky and PL results confirmed the formation of type-II and Z-scheme heterostructures, respectively.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Multidisciplinary
Mohsen Cheraghizade, Farid Jamali-Sheini
Summary: This research investigated the impact of different zinc (Zn) concentrations on the physical and optoelectronic properties of copper selenide (Cu3Se2) nanostructures for self-powered and solar-range photodetector applications. The results showed the formation of a tetragonal Cu3Se2 phase with a spherical morphology. The samples exhibited Cu-poor stoichiometry, and the incorporation of Zn atoms in the Cu3Se2 lattice reduced the optical energy band gap. It was observed that Zn concentrations activated the space charge-limited conduction (SCLC) mechanism in the Cu3Se2 devices. The study of band alignments and barrier potentials at different interfaces provided insights into the observed transportation mechanism. Finally, the Zn-doped sample with the highest Zn concentration demonstrated the highest values of responsivity (R), gain (G), and specific detectivity (D*) at 0.127 mA/W, 21.77%, and 3.92 x 10+8 Jones, respectively.
Article
Chemistry, Inorganic & Nuclear
Mehrdad Kavosh, Farid Jamali-Sheini, Ramin Yousefi, Mohsen Cheraghizade
Summary: This research examines the physical and electrical properties of copper sulfide (CuS) nanostructures grown using the sonochemical method. The impact of incorporating zinc (Zn) dopant at varying concentrations is analyzed through various techniques. The study reveals that Zn dopant increases the strain on the crystal lattice of CuS, resulting in a hexagonal covellite structure and smaller CuS nanostructures. Optical analyses indicate changes in absorption intensity and photoluminescence emissions with the addition of Zn dopant, while the electrical properties of CuS are improved. Ultimately, the study demonstrates the enhancements in physical and electrical properties of Zn-doped CuS samples, leading to improved quality parameters of the photodetector.
SOLID STATE SCIENCES
(2023)
Article
Chemistry, Physical
Abdolali Moghaddam Saray, Hassanali Azimi, Abbas Shirmardi, Morteza Nouri, Ramin Yousefi
Summary: A dual S-scheme structure is proposed for copper selenide/Ag-polyaniline nanocomposites to achieve photocatalytic degradation of dye pollutants under visible light. The plasmonic properties of Ag nanoparticles play a critical role in the enhanced photocatalytic performance of the nanocomposites by forming a dual S-scheme structure.
SURFACES AND INTERFACES
(2023)
