Article
Chemistry, Multidisciplinary
Huaqiang He, Tian C. Zhang, Like Ouyang, Shaojun Yuan
Summary: A novel hierarchical Ag2O/TiO2 heterojunction-loaded CuC2O4 nanosheet-decorated copper mesh was designed to simultaneously remove insoluble oily compounds and soluble organic pollutants, showing superior antipollution ability and oil/water separation efficiency.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Engineering, Environmental
Ayse Kuleyin, Aysem Gok, Feryal Akbal
Summary: This study investigated the effectiveness of electro-Fenton (EF) technology for advanced treatment of biologically treated textile wastewater using graphite electrodes. The EF process significantly reduced color, COD, and TOC content of the wastewater under optimal operating conditions. In continuous system, high removal efficiencies were achieved for color, COD, and TOC, demonstrating the promising potential of EF process with graphite electrodes for improving wastewater quality.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Emerson F. M. da Silva, Erika R. B. Ximenes, Leticia B. de Sales, Erica J. M. Dantas, Evelle D. C. Oliveira, Thiago B. Simoes, Andre T. S. Ribeiro, Oihane Sanz, Giovanna Machado, Luciano C. Almeida
Summary: In this study, a monolithic structured photoreactor with TiO2 immobilized on a high surface area calcined brass was used for the photodegradation of Reactive Black 5 textile dye. The system demonstrated efficient degradation of the dye under specific conditions, showing promise as a feasible alternative for textile effluent treatment.
Article
Chemistry, Multidisciplinary
Monica Enculescu, Andreea Costas, Alexandru Evanghelidis, Ionut Enculescu
Summary: Web-like architectures of ZnO and TiO2 nanotubes were fabricated using electrospun polymer nanofibers as templates. The nanotubes showed single crystalline phases of wurtzite for ZnO and anatase for TiO2, with no other crystalline phases present, and no other elements in their composition. The nanotubes exhibited lower band gaps than bulk materials and demonstrated high photocatalytic efficiency for Rhodamine B degradation.
Article
Chemistry, Multidisciplinary
Jing Liu, Jinxiao Zheng, Guichu Yue, Huaike Li, Zhaoyue Liu, Yong Zhao, Nu Wang, Chenghua Sun, Zhimin Cui
Summary: TiO2/g-C3N4 composite photocatalysts have potential applications in clean energy production and organic pollutant removal. Coating a continuous g-C3N4 layer on TiO2 fibers to form a core/shell structure enhances the separation and transit efficiency of photo-induced carriers. The prepared porous TiO2@g-C3N4 core/shell composite exhibits excellent photocatalytic performance.
Article
Energy & Fuels
Samira Abdullayeva, Shikhamir Eminov, Khuraman Jalilova, Nahida Musayeva, Jafar Guliyev, Akif Aliyev, Vusala Majidzade, Gultekin Mammadova
Summary: Highly ordered transparent thin films of TiO2 with nanotube (TNT) arrays were successfully synthesized by electrochemical anodization. Analysis of the samples showed the presence of highly ordered TNT arrays with a high degree of optical transmission. The anodization time had an impact on the surface morphology and regularity of the pores. X-ray diffraction and Raman spectroscopy confirmed the presence of the anatase phase in the samples.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Multidisciplinary Sciences
Kewei Song, Yue Cui, Liang Liu, Boyang Chen, Kayo Hirose, Md. Shahiduzzaman, Shinjiro Umezu
Summary: This study prepared and evaluated recyclable titanium dioxide-based photocatalytic self-cleaning films with a bilayer fiber structure. The experimental results showed that increasing the TiO2 content in the ABS/TiO2 fibers enhanced the hydrophobicity, photocatalytic properties, and self-cleaning efficiency of the film. The introduction of a substrate layer allowed the film to be applied to various surfaces and recycled after use.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
Kaiqiang Shi, Yi Wang, Anlin Xu, Xiezhen Zhou, Hongwei Zhu, Kajia Wei, Xiaodong Liu, Jinyou Shen, Weiqing Han
Summary: Gas-diffusion electrodes (GDEs) are efficient generators for hydrogen peroxide, playing a key role in degrading refractory organic contaminants in electro-Fenton processes. In this study, microtubular gas-diffusion electrodes (MGDEs) were fabricated and tested, demonstrating high efficiency in degrading pollutants under optimal conditions. The results show the potential of this system for degrading NSAIDs.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Tonghao Liu, Rongning Liang, Wei Qin
Summary: Researchers have developed a polymeric membrane ion-selective electrode with excellent anti-fouling and self-cleaning properties through surface covalent modification of an anatase TiO2 coating. The reactive oxygen species produced by photocatalytic TiO2 can kill microorganisms and degrade organic foulants, while a superhydrophilic film prevents foulant adsorption, inhibiting biofouling and organic fouling. Water droplet flow enables complete self-cleaning of residual foulants. This approach shows promise for improving the fouling resistance of other electrochemical or optical membrane sensors and constructing contamination-free sensors.
ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Davide Clematis, Marco Panizza
Summary: The treatment of Erythrosine B using electrochemical advanced oxidation processes (EAOPs) like electro-Fenton, UVA photoelectro-Fenton, and solar photoelectro-Fenton was studied. Irradiation was found to be crucial in increasing hydroxyl radical production and in the recover of iron catalyst, leading to faster color and COD removal degradation under light application. The UVA photoelectro-Fenton process with a 100W lamp showed the best removal performance but high energy demand, while the solar photoelectro-Fenton system had the lowest and competitive energy demands with complete removal.
Article
Environmental Sciences
Ina Thakur, Anoop Verma, Banu Ormeci
Summary: In this study, a pilot-scale once-through reactor was used to investigate the inactivation of bacteria and the degradation of organic matter in municipal wastewater. A spherical iron-mediated TiO2 catalyst was fabricated using waste materials and coated with TiO2 for enhanced performance. The results showed significant reductions in bacteria and organic matter after 45 minutes of treatment, indicating the potential of waste materials for water disinfection applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Shen-Hui Thor, Li-Ngee Ho, Soon-An Ong, Che Zulzikrami Azner Abidin, Cheng-Yong Heah, Noradiba Nordin, Yong-Por Ong, Kea-Lee Yap
Summary: The study found that carbon felt exhibited the highest dye decolourisation efficiency and generated the highest concentration of hydrogen peroxide in both PFC and EF processes. It also achieved the highest voltage output and maximum power density compared to carbon plate and carbon cloth. Enhanced decolourisation efficiencies were achieved in both PFC and PEF with higher power density.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Khadije Badvi, Vahid Javanbakht
Summary: In this study, ZSM-5/TiO2 nanophotocatalysts were prepared and used for dye degradation. Various parameters were investigated for their effects on dye removal, and it was found that the incorporation of nickel nanoparticles can enhance dye degradation efficiency. Under specific conditions, UV photocatalytic degradation showed the highest removal efficiency.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Jewon Lee, Sicheon Seong, Soyeong Jin, Youngdo Jeong, Jaegeun Noh
Summary: By combining halloysites as the support and doping TiO2 with La3+ ions, a synergistic enhancement of photocatalytic activity was achieved. This photocatalyst can efficiently decompose organic dyes and be reused multiple times with simple centrifugation separation.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Chemical
Vincent Goetz, Chloe Dezani, Enrique Ribeiro, Cyril Caliot, Gael Plantard
Summary: This article aims to develop a modeling and simulating tool for the operation of a continuous flow heterogeneous photocatalysis reactor. By focusing on the coupling between radiative transfer and reaction kinetics, and utilizing the Monte Carlo method to solve the radiative transfer equation, the dynamic simulation model has been validated.
Article
Chemistry, Physical
Navid Noor Mohammadi, Elmira Pajootan, Hajir Bahrami, Mokhtar Arami
JOURNAL OF MOLECULAR LIQUIDS
(2018)
Article
Polymer Science
Mehdi Rahimdokht, Elmira Pajootan, Marziyeh Ranjbar-Mohammadi
POLYMER INTERNATIONAL
(2019)
Article
Environmental Sciences
Mahsa Mohseni, Somaye Akbari, Elmira Pajootan, Firuzmehr Mazaheri
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Biochemistry & Molecular Biology
Marziyeh Ranjbar-Mohammadi, Mehdi Rahimdokht, Elmira Pajootan
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2019)
Article
Engineering, Chemical
Kamran Jalali, Elmira Pajootan, Hajir Bahrami
ADVANCED POWDER TECHNOLOGY
(2019)
Article
Engineering, Environmental
Abdollah Gholami Akerdi, S. Hajir Bahrami, Elmira Pajootan
JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING
(2020)
Article
Chemistry, Physical
Emmanuel Onyekachi Nwanebu, Xiaocheng Liu, Elmira Pajootan, Viviane Yargeau, Sasha Omanovic
Summary: The study found that thermally prepared Ni0.6Co0.4-oxide can be used for the electrochemical degradation of organic pollutants like methylene blue. The electrode showed good electrocatalytic performance in the degradation of organic pollutants, especially in the presence of chloride ions.
Article
Physics, Applied
Elmira Pajootan, Minnan Ye, Muyang Zhang, Sogol Niroumandrad, Sasha Omanovic, Sylvain Coulombe
Summary: In this study, multi-walled carbon nanotubes (MWCNTs) directly grown on a stainless steel mesh were functionalized using a fast, solvent-free radiofrequency (RF) plasma technique. The functionalized MWCNT electrodes showed improved capacitive behavior, particularly the MWCNT electrode functionalized with the RF plasma employing the Ar/C2H6/O-2 gas mixture at 20 W for 15 min, which achieved the highest capacitance.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Elmira Pajootan, Sylvain Coulombe, Sasha Omanovic
Summary: 3D porous electrocatalysts with low platinum loading were synthesized using gas-phase pulsed laser ablation, showing higher methanol oxidation current and lower loss of active sites compared to commercial Pt/C. Increasing the electrolyte temperature significantly improved the efficiency of the electrocatalysts.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Hanie Kazari, Elmira Pajootan, Pascal Hubert, Sylvain Coulombe
Summary: This study successfully deposited ruthenium nitride on a stainless-steel mesh substrate using a novel dry fabrication method. The method eliminates toxic byproducts and the need for binders, making it ideal for flexible supercapacitor electrodes. Experimental results showed a significant improvement in capacitance of the synthesized ruthenium nitride-multiwalled carbon nanotube electrode, with a large potential window.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Elmira Pajootan, Sammie Amin Alolabi, Sasha Omanovic, Sylvain Coulombe
Summary: This study presents the fabrication and characterization of novel multilayered electrocatalyst nanostructures for the oxygen reduction reaction (ORR). Thin titanium oxynitride (TiOxNy) coatings are deposited on multi-walled carbon nanotubes (MWCNTs) grown on a stainless-steel mesh, followed by coating with dispersed Pt nanoparticles (NPs). The resulting electrodes show high activity in the ORR, with Pt/TiOxNy-0.03 Torr-30 W/MWCNT exhibiting the best performance.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Chemical
Navid Noor, Elmira Pajootan, Parisa Mirzaei, S. Hajir Bahrami
Summary: A Cu/PAMAM/MWCNT/rGO complex was synthesized and used to fabricate an electrochemical sensor for simultaneous detection of nitrate and nitrite ions as inorganic contaminants, as well as 4-chlorophenol and 1,2,5,8 tetrahydroxy anthraquinone as organic pollutants. The synthesized electrode was characterized using various techniques, and cyclic voltammetry was performed to study the influence of solution pH, anion concentration, and scan rate on the analytical performance. The sensitivity and detection limits for the simultaneous determination of nitrate/nitrite ions were 8.030 x 10(-3) and 5.370 x 10(-3) mu A mu M-1 mm(-2), and 0.081 and 0.115 mu M, respectively. For the simultaneous determination of 4-chlorophenol/1,2,5,8 tetrahydroxy anthraquinone, the sensitivity and detection limits were 0.0105 and 9.399 x 10(-3) mu A mu M-1 mm(-2), and 0.062 and 0.070 mu M, respectively.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Ladan Eskandarian, Elmira Pajootan, Amirali Toossi, Hani E. Naguib
Summary: Long-term continuous health care monitoring using wearable technologies is gaining attention for its significant contribution to disease diagnosis and health condition identification. Fiber-based electrodes, integrated into smart textiles and wearables, offer advantages such as breathability, flexibility, and durability for continuous biosignal monitoring. This review summarizes recent breakthroughs in the design and manufacturing of dry fiber-based electrodes for electrophysiology applications, with a focus on electrocardiography, electromyography, and electroencephalography. Current limitations and future development prospects, including electroactive fiber materials, fiber processing, electrode fabrication, scaled-up manufacturing, and standardization of testing and performance criteria, are also discussed.
ADVANCED FIBER MATERIALS
(2023)
Article
Energy & Fuels
Hanie Kazari, Elmira Pajootan, Mark Sowa, Sylvain Coulombe, Pascal Hubert
Summary: Plasma-enhanced atomic layer deposition of ruthenium on functionalized carbon nanotubes eliminates the need for binders and toxic by-products. The electrodes show improved capacitance and low charge transfer resistance when compared to bare carbon nanotubes. The 3D flexible electrodes exhibit high capacitance and retention after cycling and bending tests.
JOURNAL OF ENERGY STORAGE
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Steven Walker, Gareth Price, Elmira Pajootan, Sylvain Coulombe
Summary: Nonthermal plasma-catalytic processes are being explored as an alternative to the energy-intensive Haber-Bosch process for ammonia synthesis, with a focus on achieving a more environmentally friendly and efficient production. Nanocatalysts, plasma excitation, and gas mixing are key components, with reaction kinetics serving as the coupling factor.
2021 IEEE 16TH NANOTECHNOLOGY MATERIALS AND DEVICES CONFERENCE (NMDC 2021)
(2021)
