Article
Engineering, Environmental
Qiaorong Guo, Dongbin Wei, Chuanfang Zhao, Cuiping Wang, Haijun Ma, Yuguo Du
Summary: This study found that the physical UV-blocker CG-TiO2 could break the organic coatings and promote the chemical reactions of chemical sunscreen BP-1, leading to the formation of highly toxic products during UV irradiation. A total of 24 transformation products were identified, including hydroxyl BPs, hydroxyl dibenzo-p-dioxins, and hydroxyl benzoyl benzoquinones. This study highlights the role of CG-TiO2 in promoting the transformation of chemical sunscreens and generating higher toxicity during UV irradiation, providing scientific data for evaluating the fate and potential risk of sunscreens in the environment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Ximena Jaramillo-Fierro, John Ramon, Eduardo Valarezo
Summary: This study investigates the removal of cyanide species from aqueous solutions using the ZnTiO3/TiO2/H2O2/UVB system. The experimental results show that this system is effective in removing cyanide and has good detoxification effect.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Chemistry, Physical
Nina Bono, Federica Ponti, Carlo Punta, Gabriele Candiani
Summary: In response to the COVID-19 pandemic, UV and TiO2-based PCO technologies are widely utilized to disinfect indoor spaces, showing effective bactericidal and virucidal effects by synergistically inactivating microorganisms. Fine tuning of parameters such as UV wavelength and dose is crucial for enhancing the effectiveness of these technologies in mitigating the spread of airborne pathogens.
Article
Biotechnology & Applied Microbiology
Shahina Kader, Md. Rashid Al-Mamun, Md. Burhan Kabir Suhan, Sanzeeda Baig Shuchi, Md. Shahinoor Islam
Summary: The study focuses on improving the photocatalytic performance of TiO2 semiconductors through doping and co-doping with different metals and nonmetals. The synthesis of TiO2-based photocatalysts and the construction of immobilized borosilicate glass reactors were conducted. The results showed that the Ag/MoO3/TiO2 photocatalyst had the highest degradation efficiency for methyl orange dye under UV irradiation.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Review
Environmental Sciences
Muhammad Zeshan, Ijaz A. Bhatti, Muhammad Mohsin, Munawar Iqbal, Nyla Amjed, Jan Nisar, Najla AlMasoud, Taghrid S. Alomar
Summary: Pesticide contamination has become a crucial environmental issue due to its bio-persistence and bioaccumulation. Nanoscience and nanotechnology have emerged as essential tools for the identification, removal, and mineralization of persistent pesticides using advanced nanomaterials and oxidation processes. The use of nanomaterials, such as TiO2 nanoparticles and nanocomposites, has shown promising results in the photocatalytic mineralization of pesticides.
Article
Chemistry, Multidisciplinary
Ximena Jaramillo-Fierro, Ricardo Leon
Summary: The study investigated the ability of TiO2, La/TiO2, Ce/TiO2, and Eu/TiO2 nanoparticles to remove free cyanide from water. The results showed that La/TiO2 had the highest cyanide removal percentage (98%), followed by Ce/TiO2 (92%), Eu/TiO2 (90%), and TiO2 (88%). This suggests that La, Ce, and Eu dopants can improve the properties of TiO2 and enhance its ability to remove cyanide species from aqueous solutions.
Article
Materials Science, Ceramics
Chan-Geun Song, Jonghan Won, Inhoon Jang, Hyeunseok Choi
Summary: This study developed an anatase TiO2 nanofiber as a high-efficiency catalyst using the electrospinning method and a residual organic matter cleaning method with UV light. This method achieved anatase structure TiO2 nanofibers through heat treatment at 260 degrees C and improved photocatalytic efficiency by removing residual organics with UV light. The photocatalytic efficiency of the fabricated TiO2 nanofibers was approximately six times higher than P25 and heat-treated nanofibers, as confirmed by a methylene blue decomposition experiment under visible light irradiation.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Ximena Jaramillo-Fierro, Hipatia Alvarado, Fernando Montesdeoca, Eduardo Valarezo
Summary: In this study, zeolites prepared from Ecuadorian clay and the semiconductor ZnTiO3/TiO2 were used to adsorb and photodegrade cyanide species from aqueous solutions. The adsorption characteristics of the compounds were evaluated using batch adsorption experiments, and the Langmuir isotherm model and the pseudo-second-order model were found to provide the best fit. The maximum cyanide adsorption value was achieved with the ZC compound (zeolite + clay), while the maximum cyanide photodegradation capacity was obtained with the TC compound (ZnTiO3/TiO2 + clay). The compounds showed potential for the removal of cyanide from wastewater.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Miguel A. Alvarez, M. Ruidiaz-Martinez, Jose Rivera-Utrilla, Manuel Sanchez-Polo, M. Victoria Lopez-Ramon
Summary: This study analyzed the influence of different operational variables on the performance of ethyl-paraben photodegradation catalyzed with an rGO/TiO2 composite. It was found that paraben photodegradation rate increases with longer alkyl chain length. The composite dose and initial EtP concentration significantly affect the degradation efficiency.
ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Chemical
Chukwuka Bethel Anucha, Emin Bacaksiz, Vassilis N. Stathopoulos, Pavlos K. Pandis, Christos Argirusis, Constantina-Dia Andreouli, Zoi Tatoudi, Ilknur Altin
Summary: In this study, a sol-gel-derived TiO2 material was prepared and doped with Mo using sonochemical method. The as-prepared material showed improved properties compared to unmodified TiO2 and achieved significant degradation of carbamazepine under UV irradiation. The effects of various factors on the degradation process were also investigated.
Article
Environmental Sciences
Claudia Castaneda, Jose J. Martinez, Laura Santos, Hugo Rojas, Sameh M. Osman, Ricardo Gomez, Rafael Luque
Summary: The interest in removing emerging contaminants has increased in the past decade. The study focused on the synthesis, characterization, and photocatalytic evaluation of TiO2-F, CuO/TiO2-F, and NiO/TiO2-F composite materials for degrading caffeine using UV radiation. While the fluorination of titanium dioxide improved the physicochemical properties and photocatalytic performance, incomplete mineralization was observed.
Article
Environmental Sciences
Kwena Yvonne Pete, John Kabuba, Benton Otieno, Aoyi Ochieng
Summary: A nanocomposite photocatalyst consisting of titanium dioxide supported on multiwalled carbon nanotubes was successfully prepared and used for the treatment of tetracycline-contaminated wastewater. The properties of the composite were optimized by varying the amount of titanium dioxide. The composite exhibited enhanced photocatalytic activity and followed overall pseudo-second-order kinetics and Langmuir adsorption isotherm.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Hamouda M. Mousa, Jarah Fares Alenezi, Ibrahim M. A. Mohamed, Ahmed S. Yasin, Abdel-Fatah M. Hashem, Abdalla Abdal-hay
Summary: This study successfully synthesized a semiconductor-semiconductor (S-S) heterojunction film with low bandgap energy, achieving efficient wastewater treatment through photocatalysis. The new material exhibited excellent antibacterial properties and photodegradation effects, showing great potential for application in wastewater treatment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Mingyang Chi, Xueni Sun, Gisela Lozano-Blanco, Bruce J. Tatarchuk
Summary: This study investigates the photocatalytic oxidation mechanism of carbon contaminants on the surface of TiO2 particles under UV irradiation, revealing an interactive and non-steady state transient photocatalytic reaction between surface carbon species and adsorbed H2O.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Abderrahim El Mragui, Imane Aadnan, Omar Zegaoui, Joaquim C. G. Esteves da Silva
Summary: In this study, undoped and Fe-doped TiO2 materials were synthesized and used as photocatalysts for water remediation. The structural, optical, and morphological properties of the materials were investigated. The results showed that Fe-doped TiO2 materials have a widened band gap and reduced charge carrier recombination compared to undoped TiO2. The photocatalytic experiments demonstrated that 0.5%wt Fe-doped TiO2 exhibited enhanced photocatalytic activity under UV-A light due to efficient charge separation.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Environmental Sciences
Ali Reza Rahmani, Nahid Navidjouy, Mostafa Rahimnejad, Saber Alizadeh, Mohammad Reza Samarghandi, Davood Nematollahi
Summary: The potential application of double-chamber microbial fuel cell (DC-MFC) for the removal of chemical oxygen demand (COD) and power generation from wastewater in different conditions is investigated. The results show that COD removal efficiency increases with higher concentrations of organic matter, but decreases with further increase. The important system outputs are reported for the highest COD concentration.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ghorban Asgari, Abdolmotaleb Seidmohammadi, Ali Reza Rahmani, Mohammad Reza Samarghandi, Hossein Faraji
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Engineering, Chemical
Mohammad Reza Samarghandi, Kamran Tari, Amir Shabanloo, Mehdi Salari, Hassan Zolghadr Nasab
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Green & Sustainable Science & Technology
Amad Joshirvani, Mohammad Reza Samarghandi, Mostafa Leili
Summary: This study aimed to determine the health risks from potentially toxic metal content of PM10 on the residents of Hamadan, Iran. The results showed that while Pb levels were within acceptable limits, Cr and Cd posed potentially carcinogenic health risks, especially for children. Conducting health risk assessment studies in different cities is necessary to manage air quality effectively.
CLEAN-SOIL AIR WATER
(2021)
Article
Chemistry, Physical
Reza Shokoohi, Maryam Foroughi, Zahra Latifi, Hamed Goljani, Amin Ansari, Mohammad Reza Samarghandi, Davood Nematollahi
Summary: The study compared the performance of PMS/Mn3O4 and 3D-EC processes in the removal of MB, showing that 3D-EC process achieved higher removal efficiency and mineralization performance under different conditions.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Environmental Sciences
Mohammad Reza Samarghandi, Abdollah Dargahi, Alireza Rahmani, Amir Shabanloo, Amin Ansari, Davood Nematollahi
Summary: In this study, a three-dimensional electrochemical reactor with Ti/SnO2-Sb/beta-PbO2 anode and granular activated carbon (3DER-GAC) particle electrodes was utilized for the degradation of 2,4-dichlorophenol (2,4-DCP). Process optimization using OCCD and GA led to the development of a robust quadratic model for predicting the removal efficiency of 2,4-DCP. Under optimal conditions, the 3DER-GAC system showed significantly higher removal efficiency compared to a separate electrochemical degradation process, with efficient energy consumption.
Article
Chemistry, Analytical
Leila Javadimanesh, Mohammad Khazaei, Mostafa Leili, Mohammad Reza Samarghandi
Summary: A nanostructure consisting of Fe/Ag covered by ZnO was synthesized using a chemical method. The degradation of 2,4-D was studied by optimizing pH, initial 2,4-D concentration, catalyst dosage, and irradiation time. The results showed that the nanostructure exhibited promising results in terms of pesticide degradation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Ali Reza Dayari, Ghorban Asgari, Abdolmotaleb Seid-mohammadi, Mohammad Reza Samarghandi
Summary: The study demonstrates the efficiency of modified bone char with C-MgO nanoparticles as an antibacterial agent in producing a new filter. The results show that the filter with MBC-C-MgO media had the lowest microbial content, indicating good antibacterial properties, effectively reducing the levels of Escherichia coli and Enterococcus faecalis.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Energy & Fuels
Abdollah Dargahi, Mohammad Reza Samarghandi, Amir Shabanloo, Mohammad Molla Mahmoudi, Hasan Zolghadr Nasab
Summary: The experiments based on central composite design and response surface methodology showed that the removal efficiency of phenolic compounds using modified sorbent was highest at pH 6, with optimum values for contact time, adsorbent dose, and compound concentration. The results demonstrated that the adsorption process followed Freundlich isotherm and pseudo-second-order kinetics, providing relatively high removal efficiency for phenolic compounds.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Biochemistry & Molecular Biology
Kamran Tari, Soroush Khamoushian, Tayyebeh Madrakian, Abbas Afkhami, Marek Jan Los, Arash Ghoorchian, Mohammad Reza Samarghandi, Saeid Ghavami
Summary: This study investigates the potential of water-soluble polypyrrole nanoparticles (WS-PPyNPs) as a drug donor matrix for controlled transdermal iontophoresis of insulin (INS), showing significantly increased drug delivery compared to passive delivery. The separation of WS-PPyNPs and INS under cathodal stimulation led to higher drug permeation, highlighting the potential applicability of WS-PPyNPs in the development of controlled transdermal iontophoresis of INS.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Energy & Fuels
Abdollah Dargahi, Roya Aazami Gilan, Mohammad Reza Samarghandi, Hassan ZolghadrNasab, Fatemeh Karimi
Summary: This study assessed the efficiency of electrically activated peroxymonosulfate with iron electrodes in removing humic acid from water. A central composite design was used to optimize the experimental conditions. The results showed that the electro-peroxymonosulfate process had a relatively high efficiency in removing humic acid. The optimal conditions for maximum removal efficiency were determined.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Multidisciplinary Sciences
Changiz Ahmadi, Arezou Karampourian, Mohammad Reza Samarghandi
Summary: This study analyzed the challenges related to evacuation in floods based on the views of citizens and executive managers. The findings identified several key challenges, including the lack of a primary warning system, insufficient resources, problems related to unpreparedness, issues related to emergency housing, lack of risk perception, and problems related to lack of coordination. To improve evacuation efficiency, it is important to establish an early warning system and evacuation plan, provide necessary resources, and increase risk perception and coordination.
Article
Chemistry, Applied
Neematollah Jaafarzadeh, Kamran Tari, Mohammad Reza Samarghandi, Masoud Panahi Fard, Sahand Jorfi, Rozhan Feizi, Maryam Mehrbakhsh
Summary: This study evaluated the concentration of toxic metals in raw milk and assessed their potential health risks. Samples of raw milk and water consumed by cows were collected from 10 dairy farms in Behbahan county, and the levels of lead (Pb) and cadmium (Cd) were analyzed. The results showed that the average levels of Pb and Cd in raw milk samples were 0.55 +/- 0.09 and 0.0031 +/- 0.0004 mg/l, respectively. The concentrations of Pb and Cd in cows' drinking water were 0.0035 +/- 0.0007 and 0.0022 +/- 0.0001 mg/l, respectively. The findings indicated a non-carcinogenic health risk from Cd and Pb exposure. Sensitivity analysis showed that body mass and milk consumption rate had the greatest influence on the predicted risk. The study emphasizes the importance of preventing contamination of milk with toxic metals and checking cows' feed for the source of these metals.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Engineering, Environmental
Mohammad Reza Samarghandi, Amin Ansari, Abdollah Dargahi, Amir Shabanloo, Davood Nematollahi, Mohammad Khazaei, Hassan Zolghadr Nasab, Yaser Vaziri
Summary: This study investigated the electrocatalytic synergy of the graphite/beta-PbO2 anode and granular activated carbon (GAC) particles electrodes for bisphenol A (BPA) degradation in a three-dimensional electrochemical reactor (3DER). By optimizing five independent variables, the study achieved a BPA removal efficiency of 98.8% under optimal conditions. LC-MS analysis identified short-chain acids as the final degradation intermediates during BPA degradation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Abdollah Dargahi, Reza Shokoohi, Ghorban Asgari, Amin Ansari, Davood Nematollahi, Mohammad Reza Samarghandi
Summary: This study investigated the efficiency of a hybrid system combining 3DE electrochemical treatment with MBBR biological treatment for removing 2,4-D herbicides. The results showed that increasing current density, decreasing pH, decreasing herbicide concentration and increasing electrolysis time improved the degradation efficiency in the 3DE pretreatment process. In the MBBR post-treatment process, increasing HRT and filling ratio also increased herbicide removal efficiency. The identified consortium of 2,4-D degrading bacteria in the MBBR process included various bacterial species, and the overall process showed relatively high efficiency in 2,4-D herbicide degradation.
