Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Environmental Sciences
S. Stojanovic, M. Vranjes, Z. Saponjic, V Rac, V Rakic, Lj Ignjatovic, Lj Damjanovic-Vasilic
Summary: In this study, TiO2/zeolites were used to remove the beta-blocker atenolol from an aqueous solution. The synthesized TiO2/ZSM-5 materials showed high photocatalytic activity under simulated solar light and were reusable.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Mechanics
H. D. Chandler
Summary: This study investigates the viscosity of aqueous suspensions of 25 nm titanium dioxide nano-particles, and finds that the complex behavior of the material can be explained by the interplay of three factors: intrinsic viscosity, shear rate-induced thinning mechanism, and shear rate-induced thickening mechanism.
Article
Engineering, Multidisciplinary
Wahyudiono, Hiroki Kondo, Siti Machmudah, Hideki Kanda, Yaping Zhao, Motonobu Goto
Summary: The study demonstrated the utilization of an electric field generated by high voltage discharge plasma over a liquid water surface containing glycine compound to synthesize TiO2 nanoparticles. The applied voltages, pulse numbers, and repetition rates significantly influenced the decomposition reaction of glycine compounds and electrode erosion. The UV-vis spectra and HRTEM images confirmed the formation of TiO2 nanoparticles and TiC as nanoparticle products, suggesting that this process has potential for advanced nanoparticle synthesis technology.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhutian Ding, Annabella Selloni
Summary: In this study, a model of the a-TiO2 surface was constructed using molecular dynamics simulations and deep neural network potentials trained on density functional theory data. The structure and dynamics of the a-TiO2-water interface were investigated using a combination of DP-based molecular dynamics and ab initio molecular dynamics simulations. The results revealed that the water distribution on the a-TiO2 surface lacks distinct layers, leading to faster diffusion of water at the interface. The study also found that bridging hydroxyls decay slower than terminal hydroxyls due to fast proton exchange events.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
M. Andrade-Guel, C. Cabello-Alvarado, P. Bartolo-Perez, D. Medellin-Banda, C. A. Avila-Orta, B. Cruz-Ortiz, A. Espinosa-Munoz, G. Cadenas Pliego
Summary: This study applied oxalic acid or lactic acid surface-modification to TiO2/ZnO nanoparticles and characterized them through ultrasonic treatment. The results showed that the modified nanoparticles exhibited improved antibacterial and adsorption properties.
Article
Polymer Science
Iryna Kovinchuk, Nadiia Haiuk, Giuseppe Lazzara, Giuseppe Cavallaro, Georgii Sokolsky
Summary: The photocatalytic degradation of low-density polyethylene (PE) films with titanium and manganese dioxide nanoparticles was investigated. Composite PE films with different photocatalysts were prepared and subjected to UV irradiation. Tests and measurements on the PE films were conducted to evaluate the effects of the nanoparticles on the degradation and thermal behavior of PE. The results showed the coupling effects of titanium and manganese dioxide nanoparticles on PE degradation, and the influence of the nanoparticles on the tensile properties and wettability of the films.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Physical
Abeer El Shahawy, Ahmed H. Ragab, Mahmoud F. Mubarak, Inas A. Ahmed, Abdullah E. Mousa, Dina M. D. Bader
Summary: A nano-HTiO2@activated carbon-amorphous silica nanocomposite catalyst (HTiO2@AC/SiO2) was used for the photocatalytic degradation and adsorption of the oxamyl pesticide. The catalyst showed high efficiency under optimal conditions, with a slight increase in adsorption capacity and an exothermic process. This indicates that HTiO2@AC/SiO2 is a promising material.
Article
Environmental Sciences
Jiatao Dang, Wenjun Pei, Fumeng Hu, Zaihui Yu, Shuheng Zhao, Jianjun Hu, Jiuli Liu, Dongliang Zhang, Zhixuan Jing, Xuan Lei
Summary: This study investigated the photocatalytic degradation of sulfamethoxazole (SMX) using a TiO2/BC composite. The results showed that TiO2/BC-5-300 exhibited the highest degradation efficiency for SMX, reducing its impact on the growth of bean sprouts. This study provides important data and theoretical support for the treatment of antibiotic-contaminated wastewater using TiO2/BC.
Article
Multidisciplinary Sciences
Heba A. A. El-Gawad, Ebrahiem Esmail Ebrahiem, Montaser Y. Y. Ghaly, Ahmed A. A. Afify, R. M. Mohamed
Summary: This study demonstrates that photo-catalytic oxidation is a promising technique for treating simulated oily wastewater. Factors such as initial oil concentration, catalyst dose, stirring speed, pH value, and hydrogen peroxide dose were investigated for their impact on the degradation rate. It was found that the optimal operating parameters for oil removal were an initial oil concentration of 1 g/L, stirring speed of 850 rpm, pH of 8, 3 mL of hydrogen peroxide, and 1.5 g/L of titanium dioxide, resulting in a removal percentage of 98.43% after 40 minutes of irradiation. The application of these parameters to industrial oily wastewater resulted in a 99% oil removal rate after 40 minutes of reaction time with the addition of 3 mL of hydrogen peroxide.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Multidisciplinary
Nguyen Thi Huong Giang, Ly Gia Huy, Vu Hoang Khoi, Ha Huu Tan Phong, Nguyen Duy Hai, Le Tan Tai, Nguyen Minh Dat, Dinh Ngoc Trinh, Mai Thanh Phong, Nguyen Huu Hieu
Summary: Titanium dioxide-doped graphene aerogel shows good photo-absorption and nanoparticle sizing properties, demonstrating excellent performance in the photocatalytic removal of phenolic wastewater.
MATERIALS TECHNOLOGY
(2022)
Article
Environmental Sciences
Ariel Kaminski, Christine Edwards, Ewelina Chrapusta-Srebrny, Linda A. Lawton
Summary: The study demonstrates that UV-A/TiO2 photocatalysis is effective in removing toxic substances such as ANTX-a and cyanobacterial cells, generating non-toxic decomposition products.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Devagi Kanakaraju, Muhamad Akif Aizuddin Jasni, Andrea Pace, Muhamad Hazim Ya
Summary: The Cu/TiO2/FA composite was optimized for the removal of the model dye pollutant methyl orange under visible light irradiation using response surface methodology and Box-Behnken experimental design. The study considered three independent variables and achieved a 99.91% removal rate under the optimal operating conditions. The results support the hypothesis of a combined and synergic adsorption-photocatalytic degradation process for pollutant removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Albina A. Valeeva, Irina B. Dorosheva, Ekaterina A. Kozlova, Anna A. Sushnikova, Anna Yu Kurenkova, Andrey A. Saraev, Hartrmuth Schroettner, Andrey A. Rempel
Summary: In this study, titanium foil was anodized to grow titanium dioxide nanotubes (TiO2 NT) using an original technique. After calcination and platinization, the photocatalytic activity of TiO2 NT was significantly enhanced due to the unique morphology and large specific surface area, leading to a high rate of separation of photogenerated excited electrons and holes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Zhen Xie, Bingxian Chu, Mingkun Wu, Yumin Zhou, Guotong Yi, Bin Li, Xuetang Xu, Lihui Dong, Zhengjun Chen
Summary: In this study, Sn-doped titanium dioxide was synthesized by sol-hydrothermal method, and Cu2O and Cu were deposited on its surface by photochemical reduction method to prepare a composite photocatalyst Cu2O/Cu/T60S1. The introduction of Cu2O and Cu significantly improved the photocatalytic activity of T60S1 in the degradation of organic pesticides and TC-HCl under visible light.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Mohammad W. Kadi, M. Faisal, Reda M. Mohamed, Adel A. Ismail
Summary: Mesoporous TiO2 nanoparticles-based optical sensor allows for the facile and cost-effective preconcentration, removal, and detection of ultra-trace levels of Hg(II) ions from aqueous solutions. The sensor exhibits remarkable selectivity, sensitivity, recyclability, and fast kinetic quantification and detection of diverse detrimental toxic metal ions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Electrochemistry
Jahir Ahmed, M. Faisal, S. A. Alsareii, Mohammed Jalalah, Farid A. Harraz
Summary: This study proposes an electrochemical thiourea sensor utilizing a novel silver-embedded mesoporous silicon-polyaniline nanocomposite. The sensor has a wider linear dynamic range and significantly improved other sensor parameters compared to existing sensors. Modern characterization techniques were used to characterize the nanocomposite. The sensor showed excellent sensitivity and an extremely low detection limit during electrochemical exploration. It also demonstrated proper selectivity, reproducibility, repeatability, and stability in thiourea determination.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
Mabkhoot Alsaiari, Jahir Ahmed, M. Faisal, Farid A. Harraz
Summary: The study demonstrated the successful combination of gold nanoparticles and green carbon for electrochemical sensing of methanol, showing improved performance and stability of the newly fabricated sensor.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Jadranka Milikic, Nikola Nikolic, Diogo M. F. Santos, Daniele Maccio, Adriana Saccone, Mabkhoot Alsaiari, Mohammed Jalalah, M. Faisal, Farid A. Harraz, Yizhao Li, Abu Bakr Nassr, Igor Pasti, Biljana Sljukic
Summary: Platinum-dysprosium (Pt-Dy) alloys prepared by the arc melting technique were evaluated as potential electrodes for the oxygen reduction reaction (ORR) in alkaline media. The Pt40Dy60 electrode with a lower Pt content showed higher ORR activity and lower oxygen evolution reaction (OER) activity compared to the alloy with a higher Pt content.
Article
Chemistry, Physical
Rangaswamy Puttaswamy, Hemanth Kumar Beere, Prahlad Yadav, Mohammed Jalalah, M. Faisal, Farid A. Harraz, Debasis Ghosh
Summary: A zinc-ion battery employing an aqueous electrolyte, particularly featuring a cathode composed of Ag2V4O11@reduced graphene oxide composite, demonstrates high energy density, excellent rate capability, and long cycle stability. The synergistic effect between Ag2V4O11 and optimized rGO content contributes to the enhanced charge storage mechanism and cycling performance of the battery.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Md. A. Rashed, Jahir Ahmed, M. Faisal, S. A. Alsareii, Mohammed Jalalah, Vineet Tirth, Farid A. Harraz
Summary: The combination of conducting polymer and metal oxide semiconductor is an effective way to fabricate novel nanocomposites for electrochemical sensors. The catalytic efficiency of the polythiophene doped CuO (Pth-CuO) electro-catalyst was investigated for the determination of H2O2. The synthesized nanocomposite showed higher catalytic efficiency compared to other materials tested.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Ceramics
Jahir Ahmed, M. Faisal, S. A. Alsareii, Mohammed Jalalah, Mabkhoot Alsaiari, Farid A. Harraz
Summary: In this study, a novel Acetaminophen (AcP) sensor utilizing a Mn2O3-embedded mesoporous silicon nanocomposite fabricated glassy carbon electrode was developed. The sensor showed excellent sensitivity, a wide linear dynamic range, and a very low detection limit. It was also successful in detecting AcP concentration in commercial tablets and checking potential chemical interference. Therefore, this Mn2O3@PSi/GCE sensor assembly is expected to be an effective route in developing an efficient AcP sensor.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
I. A. Abdel-Latifa, Charanjeet Singh, Rajat Joshi, Jasbir Singh, A. Gismelssed, M. M. Alam, L. A. Al-Hajji, Adel A. Ismail, M. Faisal, Abdullah M. Asiri, I. Z. Al-Yahmadi, Faten Bzour, M. T. Z. Myint, Mohammed M. Rahman
Summary: Ba0.5Sr0.5Fe12-2x(CoHf)(x)O-19 ferrite samples were successfully prepared using the solid-state method, and their crystal structure and bandgap energies were determined. The material showed high photocatalytic efficiency and electrochemical sensor performance at x = 0.4, making it suitable for applications in environmental and healthcare fields.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Muhammad Imran Khan, Abdallah Shanableh, Akram M. Alfantazi, Mushtaq Hussain Lashari, Suryyia Manzoor, Ramsha Anwer, Nosheen Farooq, Farid A. Harraz, Mabkhoot Alsaiari, M. Faisal
Summary: This study investigated the discharge percentage of anionic dye Eosin-B (EB) using commercially available QPPO/PVA based anion exchange membrane (AEM) BIII at room temperature. The impact of EB initial concentration, membrane dosage, ionic strength, contact time, and temperature on EB removal percentage was examined. The results showed that the EB removal percentage increased from 22% to 99.56% with contact time and from 38.15% to 99.56% with membrane dosage, while it decreased from 99.56% to 29%, 54.61%, and 92.22% with increasing initial concentration of EB, ionic strength, and temperature, respectively.
Article
Chemistry, Physical
Jahir Ahmed, M. Faisal, S. A. Alsareii, Mohammed Jalalah, Farid A. Harraz
Summary: Dopamine is an important biomolecule for neurotransmission, and effective detection of dopamine is crucial for the rapid diagnosis of neurological disorders. In this study, a non-enzymatic dopamine sensor based on a gold-decorated porous silicon-poly-3-hexylthiophene nanocomposite was designed and characterized. The sensor exhibited excellent sensitivity, a wide linear dynamic range, and a low detection limit, and showed selectivity, reproducibility, and stability in dopamine detection. The gold-decorated nanocomposite-modified electrode may serve as a promising platform for the development of non-enzymatic electrochemical sensors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
M. Faisal, M. M. Alam, Abdullah M. Asiri, Mabkhoot Alsaiari, Raja Saad Alruwais, Mohammed Jalalah, O. Madkhali, Mohammed M. Rahman, Farid A. Harraz
Summary: A sensor probe based on differential pulse voltammetric electrochemical approach was developed for efficient detection of hydrogen peroxide (H2O2) at room conditions. The sensor probe utilized an electrode coated with silver-decorated polypyrole-carbon black/TiO2 nanocomposites as the active sensing substrate. Characterization of the nanocomposites was done using various analytical tools. The developed sensor exhibited sensitivity and reproducibility in detecting H2O2, making it reliable for sensitive detection of unsafe chemicals.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
M. Faisal, M. M. Alam, Jahir Ahmed, Abdullah M. Asiri, S. A. Alsareii, Raja Saad Alruwais, Norah Faihan Alqahtani, Mohammed M. Rahman, Farid A. Harraz
Summary: A simple L-lactic acid electrochemical sensor based on Pt-nanoparticles@Chitosan/ZnTiO3 nanocomposites coated on a glassy carbon electrode was demonstrated. The nanocomposites were prepared using ultra-sonication and irradiation methods, and characterized using various techniques. The sensor exhibited a linear current versus potential responses relation in a concentration range of L-lactic acid and showed good sensitivity, a low limit of detection, and reliable reproducibility and response time.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Mohammed Jalalah, Zubair Nabi, Muhammad Naveed Anjum, Mirza Nadeem Ahmad, Atta Ul Haq, Muhammad Bilal Qadir, Mohd Faisal, Mabkhoot Alsaiari, Muhammad Irfan, Farid A. Harraz
Summary: The growing industry and its effluents, such as toxic dyes and volatile organic compounds, pose a serious environmental concern due to their non-biodegradable nature and high chemical stability. Recently, using photo-catalysts to degrade toxic dyes and drugs has become an important and successful approach. This study presents the synthesis of a poly(o-anisidine)-based composite with graphitic carbon nitride and zinc oxide (POA/g-C3N4/ZnO) and its utilization as a photo-catalyst.
Article
Chemistry, Analytical
Abdullah Alrashidi, Anas M. El-Sherif, Jahir Ahmed, M. Faisal, Mabkhoot Alsaiari, Jari S. Algethami, Mohamed I. Moustafa, Abdulaziz A. M. Abahussain, Farid A. Harraz
Summary: An efficient electrochemical sensor based on a Pd@PSi-PPy-C nanocomposite was developed to detect and quantify hydroquinone (HQ), which can have negative impacts on health and the environment.
Article
Environmental Sciences
Mohd Faisal, Jahir Ahmed, Mohammed Jalalah, Saeed A. Alsareii, Mabkhoot Alsaiari, Farid A. Harraz
Summary: Appropriate material selection and bandgap modification are crucial for efficient photocatalyst development. In this study, a visible light oriented photocatalyst based on g-C3N4, chitosan (CTSN) and platinum (Pt) nanoparticles was developed using a simple chemical approach. Various characterization techniques were employed to analyze the synthesized materials. The newly developed ternary photocatalyst exhibited excellent efficiency in the degradation of gemifloxacin mesylate and methylene blue under visible light. This research provides a simple method for designing rapid and effective visible light oriented photocatalysts to combat environmental issues.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
