Article
Materials Science, Ceramics
Ruohong Sui, John H. Jacobs, Nancy Chou, Connor E. Deering, Christopher B. Lavery, Robert A. Marriott
Summary: Both affordability and stability are crucial for commercial-scale production and industrial applications of TiO2. This study investigated a facile sol-gel process using titanyl sulfate as a feedstock, which resulted in the stable formation of anatase phase with bimodal mesopores and macropores. These unique nanostructures make it suitable for catalysis and filtration applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Maira Marra, Marcello Dumont, Hugo G. Palhares, Himad A. Alcamand, Manuel Houmard, Eduardo H. M. Nunes
Summary: By adjusting the sol-gel parameters and drying/heat treatment conditions, it is possible to control the co-existence of anatase and rutile in the synthesized sol-gel titania. The lack of water in the starting solution favors the formation of both anatase and rutile, improving the photocatalytic behavior of titania.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Sanya Khursheed, Rida Tehreem, Muhammad Awais, Dilshad Hussain, Muhammad Imran Malik, Young Sun Mok, Ghayas Uddin Siddiqui
Summary: The purpose of this study was to investigate the effect of photocatalytic degradation using nitrogen and tungsten co-doped titania (TiO2) nanoparticles, which are cost-effective and environmentally friendly. The synthesized nanoparticles were analyzed using various techniques, including spectroscopy, microscopy, and spectrometry. The co-doping of metal and non-metal enhanced the photocatalytic properties of the TiO2 nanoparticles, particularly in the visible region. This resulted in improved absorption of visible light and reduced recombination of electron-hole pairs, leading to accelerated photodegradation. The bandgap of the titania nanoparticles was reduced after efficient doping, enabling the photodegradation of malachite green under visible light illumination. The results of photocatalytic degradation were confirmed using spectroscopy and high-performance liquid chromatography coupled with mass spectrometry.
Article
Chemistry, Multidisciplinary
Carla Calabrese, Amelie Maertens, Alessandra Piras, Carmela Aprile, Leonarda Francesca Liotta
Summary: TiO2 nanomaterials were synthesized through a sol-gel method using titanium butoxide as a precursor, Pluronic F127 as a template, toluene as a swelling agent, and acidic water or ethanol as reaction solvents. The synthesis medium influenced the phase composition of the solids, with ethanol promoting dispersed anatase particles and water leading to a rutile phase. The photocatalytic activity of the samples was tested by the photodegradation of Rhodamine B.
Review
Chemistry, Physical
Daniel Alves Barcelos, Maria Clara Goncalves
Summary: Visible-light-photoactive titania micro- or nanoparticles have shown great potential in various industrial applications, especially in environmental remediation. The sol-gel method, with its simplicity, versatility, and green chemistry approach, has been successfully employed for synthesizing crystalline and amorphous TiO2 micro- and nanoparticles. This short review aims to discuss the recent advancements in visible-light-photoactive titania-based nanoparticles for environmental remediation. Co-doping of titania, titania composite design, and the use of amorphous networks have been the most commonly used strategies to achieve this goal. Finally, predictions about the future developments in these fields are provided.
Article
Materials Science, Multidisciplinary
Gertrude Kignelman, Wim Thielemans
Summary: A recent study shows that sol-gel and hydrothermal synthesis methods are the most sustainable processes for TiO2 nanoparticle synthesis, and the impact of various reaction parameters on the crystallinity of nanoparticles varies.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Ceramics
Shumaila Islam, Adil Alshoaibi, Kawther Alamer, Javed Mazher, Nisrin Alnaim, Hazri Bakhtiar
Summary: Gold-supported titania nanoparticles (AuTNPs) with encapsulated red dyes exhibited improved pH sensing properties, with reduced particle size and increased refractive index compared to AuTNPs alone. CR-AuTNPs showed faster response time and higher pKa value, indicating their potential as pH sensors.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Ibrahim Moussa, Hassan Ibrahim, El-Amir M. Emam, Tawfik M. Tawfik
Summary: A facile and green sol-gel method was used to synthesize carbon-containing titania nanopowder, and the effects of different heat treatment temperatures on the crystalline phases were investigated. High-resolution electron microscopy and X-ray photoelectron spectroscopy confirmed the presence of nanocrystals and carbon clusters in the samples. UV-vis spectroscopy demonstrated significant enhancement in the optical absorption properties and electronic structure of the prepared samples compared to pure titania phases. Additionally, a self-cleaning action was demonstrated in the carbon-containing titanate nanocomposite.
Article
Materials Science, Ceramics
Adil Alshoaibi, Shumaila Islam
Summary: Semiconductor nano photocatalysis is a promising method for polluted water remediation. However, the high recombination rate and low reaction rate of electrons and holes hinder their large-scale applications. Therefore, heterogeneous nano photocatalysts are needed to promote their practical applications. In this study, gold nanoparticles-doped anatase nanoparticles were synthesized and heat-treated, showing improved photocatalytic activity after 2 hours of treatment.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Applied
Shumaila Islam, Muhammad Safwan Aziz, Hazri Bakhtiar, Adil Alshoaibi, Sulaiman Wadi Harun, Saira Riaz, Shahzad Naseem
Summary: Mesoporous hematite nanoparticles encapsulated SiO2-TiO2 nanocomposites were synthesized and heat-treated, resulting in improved magnetic properties and higher specific surface area for enhanced sensitivity of the sensor. The fiber optic chemical sensor showed a linear response towards hydrocarbons with good stability and accuracy.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Amna Bashir, Abid Inayat, Rabia Bashir, Sadaf Jamil, Syed Mustansar Abbas, Muhammad Sultan, Azhar Iqbal, Zareen Akhter
Summary: TiO2 nanoarchitectures with high surface area and charge density were synthesized by hydrothermal method and further modified via co-doping. The effect of co-doping on the electrical, morphological, and structural properties of the nanoarchitectures was investigated using various characterization tools. The co-doped nanoarchitectures showed higher surface area compared to undoped and singly doped TiO2. The presence of dopants in different oxidation states was confirmed. The co-doped nanoarchitectures exhibited enhanced capacitance and better cyclic stability, attributed to the development of mesoporous structures with more electroactive sites and improved charge transfer.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Chemical
Paulina Szo, Maksymilian Fr, Waldemar Pichor
Summary: The influence of sol composition, water content, selected alcohols, deflocculant, and acid on the photocatalytic properties of TiO2 powders obtained by the sol-gel method was investigated. It was found that TiO2 powders containing two polymorphs exhibited superior photocatalytic properties compared to single-phase powders with anatase.
Article
Materials Science, Multidisciplinary
Kaustubh Sudhakar, Avishek Karmakar, Hussein O. Badr, Tarek El-Melegy, Mary Q. Hassig, Michael Carey, Stefan Masiuk, Liyan Wu, Qian Qian, Takayuki Kono, Christopher Y. Li, Michel W. Barsoum
Summary: In this study, one-dimensional titania-based nanofilaments were synthesized via a hydrothermal method. It was found that regardless of the precursor materials and processing conditions, these nanofilaments served as the essential building blocks in all microstructures. This discovery is of significant importance for understanding and controlling the self-assembly process of nanomaterials.
Article
Materials Science, Multidisciplinary
Adil Alshoaibi, Shumaila Islam
Summary: The opto-chemical sensing matrices, D-SNIPs, D-TNIPs, and D-STNPs, exhibit thermally stable, large surface area, and different refractive indices. The prepared sensors show a linear response, non-leachability, stability towards high pH 12, and fast time response, making them suitable for practical pH sensing applications.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
Anithadevi Sekar, Ramanan Vadivel, Ramanujam Ganesh Munuswamy, Rakhi Yadav
Summary: The study introduces a new fingerprint visualizing agent, the biocompatible zinc oxide-carbon dots/silica gel (C-ZnO-dots/Si) nanopowder, which is low-cost and non-toxic. Results show that the synthesized nanopowder performs well in LF identification and can extract features of Level 1-3.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Optics
Abeer A. Shehab, S. K. Sadrnezhaad, M. J. Torkamany, M. Fakouri Hasanabadi, Muhaed Alali, A. K. Mahmoud, Mohammed H. Abass, A. H. Kokabi
Article
Chemistry, Physical
Shervin Daneshvar e Asl, Sayed Khatiboleslam Sadrnezhaad
Article
Chemistry, Inorganic & Nuclear
Shervin Daneshvar e Asl, Sayed Khatiboleslam Sadrnezhaad
SOLID STATE SCIENCES
(2020)
Article
Chemistry, Physical
Navid Ghane, S. K. Sadrnezhaad, Seyed Morteza H. Hosseini
APPLIED SURFACE SCIENCE
(2020)
Article
Materials Science, Coatings & Films
Arghavan Goudarzi, S. K. Sadrnezhaad, Narges Johari
Summary: Advanced nanoscale coating methods on orthopedic implant surfaces have significantly improved implantation success by allowing adjustable drug release and enhancing biocompatibility. The combination of silk fibroin nanofibers and titanium oxide nanotube arrays has been shown to create a well-controlled drug delivery system with excellent cell biocompatibility.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Pharmacology & Pharmacy
Navid Rakhshani, Nahid Hassanzadeh Nemati, Ahmad Ramazani Saadatabadi, S. K. Sadrnezhaad
Summary: Nano metal-organic frameworks (NMOFs), such as UiO-66-NH2, have been developed as drug delivery systems due to their high porosity and specific surface area, with PNVCL coating providing a dual pH/temperature-responsive nanocomposite against A549 lung cancer cells. Characterization studies including FTIR, H-1 NMR, DLS, XRD, SEM, FESEM, TGA, and BET analysis were conducted to evaluate the synthesized nanocarriers. The results indicated the significant potential of UiO-66-NH2/DOX/PNVCL dual-responsive nanocomposite for effective delivery of anticancer drugs.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Gholam Reza Dabbagh, S. K. Sadrnezhaad, Reza Shoja Razavi, Amir Abbas Nourbakhsh, Nahid Hassanzadeh Nemati
Summary: Creating laser texture on dental implants using a pulse Nd:YAG laser can accelerate osseointegration. The study found that the lowest contact angle and highest surface free energy occurred at a 60° intersecting lines angle.
JOURNAL OF LASER APPLICATIONS
(2021)
Article
Engineering, Biomedical
Seyed Yahya Rahnamaee, Shahab Ahmadi Seyedkhani, Aylar Eslami Saed, Sayed Khatiboleslam Sadrnezhaad, Ashkan Seza
Summary: This study investigated the effects of different bioinspired coatings on titanium alloy surfaces to address common issues in hard-tissue implant failure. The results showed that these coatings could enhance the adhesion strength between coatings and titanium alloy, and exhibited good cell viability and mechanical properties, which could potentially improve the long-term stability of implants.
BIOMEDICAL MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
Roghayeh Haghjoo, Sayed-Khatiboleslam Sadrnezhaad, Nahid Hassanzadeh-Nemati
Summary: Integrating implants with the surrounding bone tissue is a significant challenge in medical engineering. In this study, titanium foams with various pore morphologies were fabricated using powder metallurgy and their influence on cell attachment was evaluated. The results provide valuable insights for the application of porous titanium in bone defect restoration.
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Optics
Farzad Firouzi, Sayed Khatiboleslam Sadrnezhaad
Summary: Due to the various sample preparation techniques and optical measurement strategies, there are different experimental datasets available for the complex dielectric function of gold. Evaluating and selecting the most reliable datasets is crucial for optical-based designs and applications. The Brendel-Bormann model, known for its accuracy, is used as a criterion, with MS Excel being employed for its calculation. 'Palik' and 'Babar' are found to have the most accurate datasets for the real part of the dielectric function in the short- and long-wavelength ranges, respectively, while the reverse is true for the imaginary part. The validity of these datasets is attributed to using gold samples with minimal structural and surface imperfections.
JOURNAL OF MODERN OPTICS
(2023)
Article
Green & Sustainable Science & Technology
P. Vahdatkhah, O. Voznyy, S. K. Sadrnezhaad
Summary: The reversibility of anionic and cationic redox in Co-free concentration-gradient LLO was improved by integrating oxygen vacancies and high Ni/Mn ratio on LLO's surface, resulting in enhanced capacity of the cathode. This work provided a practical approach for resolving the capacity decay of Co-free LLOs by engineering the cathode/electrolyte interface and structure.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Materials Science, Multidisciplinary
Mohammad Asadollahi, Reza Alizadeh, Sayed Khatiboleslam Sadrnezhaad
Summary: In this study, the effects of adding silver and copper antibacterial elements on the microstructure, mechanical properties, and degradation behavior of as-cast Mg-2Zn alloy were investigated. The results showed that both silver and copper had significant grain refinement effects and formed different precipitates in the alloy. The addition of silver and copper also improved the ultimate shear strength values, but increased the hydrogen evolution rate. Solution treatment effectively reduced the degradation rate.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Amirmostafa Amirjani, S. K. Sadrnezhaad
Summary: Plasmonic nanostructures are widely used and their performance can be optimized by adjusting geometric parameters. This review revisits numerical methods for simulating optical responses and discusses the latest applications in various fields.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Shervin Daneshvar E. Asl, Hamaneh Zarenezhad, Masoud Askari, Mohammad Halali, Sayed Khatiboleslam Sadrnezhaad
Article
Engineering, Multidisciplinary
A. A. Shehab, S. K. Sadrnezhaad, A. K. Mahmoud, M. J. Torkamany, A. H. Kokabi, M. Fakouri Hasanabadi
