Article
Environmental Sciences
Daiane R. S. Cruz, Gleyce K. de Jesus, Clecia A. Santos, Wenes R. Silva, Alberto Wisniewski, Graziele C. Cunha, Luciane P. C. Romao
Summary: The degradation of AB210 dye using a CoFe2O4/NOM magnetic hybrid catalyst (Hb200) in synthetic and industrial effluent samples showed higher efficiency and mineralization with the EF process compared to AO-H2O2. The Hb200 hybrid maintained excellent catalytic activity in multiple cycles, achieving almost complete mineralization of AB210 in industrial effluent with high organic load. Most contaminants, including the toxic bis(2-ethylhexyl) phthalate, were eliminated or transformed after EF treatment with Hb200.
Article
Materials Science, Multidisciplinary
Eduardo Aguilera-Ruiz, Patricia Zambrano-Robledo, Jorge Vazquez-Arenas, Brenda Cruz-Ortiz, Jose Peral, Ulises Matias Garcia-Perez
Summary: Brain-like nanostructures of BiVO4 were successfully synthesized using citric acid as a chelating agent via ultrasonic spray pyrolysis. The photocatalytic activity of the resulting material displayed significant enhancement compared to powders produced by co-precipitation, attributed to improved charge separation process and more efficient energy transfer.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Environmental Sciences
Xin Zhang, Kandasamy Saravanakumar, Anbazhagan Sathiyaseelan, Yuting Lu, Myeong-Hyeon Wang
Summary: In this study, spherical silica nanoparticles (SiO2 NPs) were prepared using a modified Stober's method and tested for the removal of methyl orange (MO). The SiO2 NPs had a zeta size of 152.5 nm, a PDI of 0.377, and a zeta potential of -5.59 mV. The adsorption of MO by SiO2 NPs was influenced by parameters such as initial dye concentration, reaction time, temperature, and pH. The highest adsorption rate was observed to be 69.40 mg/g of SiO2 NPs. The toxicity of the SiO2 NPs treated MO dye solution was tested and found to have no significant toxic effects on corn seeds and Artemia salina.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Ceramics
Carmen Mita, Nicoleta Cornei, Georgiana Bulai, Marius Dobromir, Mihaela Girtan, Alexander Doroshkevich, Eniko Gyorgy, Diana Mardare
Summary: In this paper, the photocatalytic properties of SmFe0.7Co0.3O3 and Sm0.7Sr0.3Fe0.7Co0.3O3 thin films for rhodamine B degradation were compared in the absence and presence of hydrogen peroxide. The effects of Sr doping on film properties were investigated using various techniques. The presence of Sr atoms in the film resulted in increased photocatalytic efficiency, increased oxygen vacancies, and reduction of Fe4+ to Fe3+ and Fe2+. In the presence of co-catalyst, the degradation efficiency reached 100% after 120 min for the doped film and 150 min for the undoped film.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Samanta da Silva Gundel, Fernanda Reis Favarin, Ericles Forrati Machado, Daniel Moro Druzian, Cristiane dos Santos, Luis Fernando Wentz Brum, Aleksandro Schafer da Silva, William Leonardo da Silva, Aline Ferreira Ourique
Summary: Due to inadequate treatment and incorrect management, wastewater with dyes is a major environmental concern. This study investigated the potential application of nanostructured powdery systems in the photodegradation of Rhodamine B dye. Nanocapsules and liposomes containing curcumin and ascorbic acid were prepared, characterized, and dried using the spray drying technique. Under UV and visible irradiation, the nanostructures exhibited superior photocatalytic performance compared to commercial catalysts.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Energy & Fuels
Ranjit S. Kate, Habib M. Pathan, Ramchandra Kalubarme, Bharat B. Kale, Ramesh J. Deokate
Summary: This paper provides an overview of the research progress on metal oxide thin films for supercapacitor applications. The spray pyrolysis technique is used to deposit these films, which have high energy and power density, making them important for energy storage. The films have a large surface area and appropriate pore size distribution due to the nanostructured metal oxides, resulting in high specific capacitance and improved performance.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Electrical & Electronic
Beyza Tonbul, Hilal Aybike Can, Tayfur Ozturk, Hasan Akyildiz
Summary: The study aimed to tailor the properties of AZO thin films for transparent heater applications, investigating the effects of various parameters on the microstructure, electrical, optical properties, and heating/deicing behaviors of the films. The optimized heater showed good sheet resistance and transmittance, with a maximum achievable surface temperature of 76 degrees C and efficient ice/water removal. The AZO heater exhibited high thermal resistance and stable and reversible heating behavior.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Environmental Sciences
Aditi Trivedi, Swathi Desireddy, Sabumon Pothanamkandathil Chacko
Summary: A mixed microbial consortium adapted from the activated sludge process was capable of simultaneous decolourization and mineralization under denitrifying conditions, even at high methyl orange concentrations. Decolourization process followed first-order kinetics, with better performance observed at alkaline pH levels.
Review
Engineering, Environmental
J. Ambigadevi, P. Senthil Kumar, Dai-Viet N. Vo, S. Hari Haran, T. N. Srinivasa Raghavan
Summary: The textile industry plays a significant role in the Indian economy, however, the synthetic dyes used in this industry pose a serious threat to the environment. Heterogeneous photocatalysis using semiconductor-based nanoparticles has emerged as an effective solution for treating textile effluent and various nanostructures have shown promising results in degrading harmful pollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Esteban Diaz-Torres, Jorge Roque, Alma Sofia Arreola-Pina, Manuel Alejandro Perez-Guzman, Rebeca Ortega-Amaya, Mauricio Ortega-Lopez
Summary: This work describes the spray pyrolysis deposition of PbSe films using PbSe colloids as the starting solution. The results show that using colloidal dispersions as spray solutions for forming PbSe films is effective, and the synthesis method allows for the elimination of thiol and amine groups before deposition, significantly simplifying the process.
Article
Materials Science, Multidisciplinary
Claudiu Colbea, Petruta Oancea, Mihaela Puiu, Toma Galaon, Adina Raducan
Summary: This study reports the degradation performance of three phthalocyanine-photosensitized TiO2 nanocomposites on waste dyes, showing good decolourization efficiency and thermal stability, with the potential to achieve high organic carbon removal rates. The experiments demonstrate that these sensitized catalysts can effectively degrade recalcitrant azo dyes and may be combined with enzymatic/microbial treatment for total mineralization.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Javier Zamudio-Garcia, Leire Caizan-Juanarena, Jose M. Porras-Vazquez, Enrique R. Losilla, David Marrero-Lopez
Summary: This study investigates the influence of different electrolytes on the electrochemical performance of LSCF nanostructured electrodes. The results show that the ionic conductivity of the electrolyte has a significant impact on the polarization resistance of LSCF. Additionally, the rate-limiting steps for the oxygen reduction reaction (ORR) remain the same regardless of the electrolyte used.
Article
Chemistry, Multidisciplinary
Rodrigo Henriquez, Paula Salazar Nogales, Paula Grez Moreno, Eduardo Munoz Cartagena, Patricio Leyton Bongiorno, Elena Navarrete-Astorga, Enrique A. Dalchiele
Summary: Kesterite Cu2ZnSnS4 (CZTS) nanoparticles were successfully synthesized using a hydrothermal method. Characterization techniques including XRD, Raman spectroscopy, XPS, FE-SEM, EDS, TEM, and UV-vis spectroscopy were employed to study the structural, chemical, morphological, and optical properties. The synthesized CZTS nanoparticles exhibited a nanocrystalline structure with a bandgap of 1.5 eV, making them suitable for solar photocatalytic degradation applications. The photocatalytic activity of CZTS was demonstrated through the degradation of Congo red azo dye under solar simulation light irradiation, achieving 90.2% degradation in just 60 minutes. The prepared CZTS nanoparticles were also reusable for the removal of Congo red dye from aqueous solutions.
Article
Environmental Sciences
The Ky Vo
Summary: In this study, mesoporous microspheres of Al2O3 @TiO2 with improved adsorption and photocatalytic performance were successfully prepared. The incorporation of amorphous γ-Al2O3 was found to enhance the removal of tetracycline and promote the separation and migration of photo-generated holes and electrons. The study provides a simple and scalable method for manufacturing Al2O3-decorated TiO2 microspheres.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
B. Al Farsi, T. M. Souier, F. Al Marzouqi, M. Al Maashani, M. Bououdina, H. M. Widatallah, M. Al Abri
Summary: Transparent pure and Al-doped zinc oxide thin films were successfully deposited on glass substrates using the sol-gel dip-coating technique. The study found that Al doping and annealing temperature have significant effects on the structural, morphological, optical properties, and photocatalytic activity of the films. Al doping was found to improve the photocatalytic activity of the films.
Article
Anatomy & Morphology
Alexandre Loukanov, Polina Mladenova, Svetlin Toshev, Asen Karailiev, Elena Ustinovich, Seiichiro Nakabayashi
MICROSCOPY RESEARCH AND TECHNIQUE
(2018)
Article
Engineering, Environmental
Ralitsa Velinova, Silviya Todorova, Boris Drenchev, Georgi Ivanov, Maria Shipochka, Pavel Markov, Diana Nihtianova, Daniela Kovacheva, Alexander Larin, Anton Naydenov
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Anatomy & Morphology
Alexandre Loukanov
MICROSCOPY RESEARCH AND TECHNIQUE
(2019)
Article
Chemistry, Physical
Alexandre Loukanov, Anatoliy Angelov, Yuki Takahashi, Ivan Nikolov, Seiichiro Nakabayashi
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2019)
Article
Chemistry, Physical
I Stambolova, O. Dimitrov, S. Vassilev, St Yordanov, V Blaskov, N. Boshkov, M. Shipochka
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
B. Karamanova, A. Stoyanova, M. Shipochka, Ch Girginov, R. Stoyanova
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Anatomy & Morphology
Alexandre Loukanov, Svetla Nikolova, Chavdar Filipov, Seiichiro Nakabayashi
MICROSCOPY RESEARCH AND TECHNIQUE
(2020)
Article
Environmental Sciences
Nouha El Allaoui, Anass Omor, Fatima Zahra Elmadani, Kenza Bouayad, Seiichiro Nakabayashi, Alexandre Loukanov
WATER AND ENVIRONMENT JOURNAL
(2020)
Article
Anatomy & Morphology
Alexandre Loukanov
Summary: The study visualized the rapid photothermal lysis of Escherichia coli by triggering nanomotors, revealing the toxic mechanism. The high-resolution microscopy technique accurately monitored the intracellular alterations of cells, displaying structural changes in a more natural state.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Anatomy & Morphology
Alexandre Loukanov, Ayano Kuribara, Svetla Nikolova, Masakazu Saito
Summary: This study demonstrates that histidine-containing carbon nanodots can serve as externally tunable antibacterial agents when irradiated with visible light. The carbon nanodots with positive charge can readily adsorb on the negatively charged envelope of bacteria under slightly acid pH, thereby inhibiting their growth under visible light illumination.
MICROSCOPY RESEARCH AND TECHNIQUE
(2022)
Review
Pharmacology & Pharmacy
Alexandre Loukanov, Ayano Kuribara, Chavdar Filipov, Svetla Nikolova
Summary: Multifunctional programmed nanomachines with theranostic functions have great potential in oncology and personalized nanomedicine. The design of nanomachines enables them to overcome biological barriers and distinguish cancer cells from normal cells. The use of biocompatible and biodegradable materials minimizes adverse effects on normal cells, and theranostic nanomachines provide improved selectivity for cancer.
Article
Chemistry, Physical
Alexandre Loukanov, Mariela Chichova, Chavdar Filipov, Milena Shkodrova, Milena Mishonova, Kirilka Mladenova, Jordan Doumanov, Hristo Gagov
Summary: Ultra-small histidine-functionalized carbon nanodots with engineered modality were prepared as photo-oxidative nanozymes for cancer theranostics. The embedding of imidazole ring enhanced the absorbance, fluorescence, and phosphorescence intensities in aqueous solution, resulting in higher oxygen adsorption and better photosensitization. The nanozyme was able to inhibit cell migration and induce cytotoxicity through the production of singlet oxygen under visible light irradiation. The biocompatibility of the nanodots was proven through various assays. The nanoparticles show promise as fluorescence anticancer agents and oxidize-mimicking nanozymes for photodynamic therapy.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Manel Machreki, Takwa Chouki, Georgi Tyuliev, Dusan Zigon, Bunsho Ohtani, Alexandre Loukanov, Plamen Stefanov, Saim Emin
Summary: Oxygen vacancies (OVs) are critical for enhancing the electrical and catalytic properties of metal oxide-based photoelectrodes. In this study, reduced TiO2 nanotube arrays (NTAs) (TiO2-x) were prepared using a one-step reduction method. Characterization techniques confirmed the presence of defects in TiO2-x NTAs, and photoelectrochemical studies showed a significantly improved photocurrent density compared to pristine TiO2. The increased OVs in TiO2-x affected surface recombination centers, enhanced electrical conductivity, and improved charge transport. The TiO2-x photoanode was successfully used for the photoelectrochemical degradation of a textile dye and a pharmaceutical compound.
Article
Chemistry, Multidisciplinary
Katerina Zaharieva, Maria Shipochka, Katya Milenova, Silvia Dimova, Ognian Dimitrov, Iliiyana Hristova
Summary: Nickel ferrite-activated carbon materials prepared by co-precipitation and thermal treatment have shown excellent photocatalytic activity for the discoloration of Bromocresol Purple and Bromothymol Blue dyes. The photocatalyst with composition NixFe3-xO4-AC, where x=1, exhibited the highest catalytic activity due to its smaller particle size, mesoporous structure, higher crystallinity, and higher content of hydroxyl groups. This study highlights the potential application of these materials in dye discoloration.
CROATICA CHEMICA ACTA
(2023)
Article
Pharmacology & Pharmacy
Alexandre Loukanov, Svetla Nikolova, Chavdar Filipov, Seiichiro Nakabayashi
Article
Biochemistry & Molecular Biology
Girgis Obaid, Menitte Eroy, Jie Zhao, Shazia Bano, Mari Mino-Kenudson, Tayyaba Hasan
Summary: The presence of desmoplasia in pancreatic ductal adenocarcinoma (PDAC) is associated with poor treatment outcomes and reduced drug delivery. By analyzing collagen subtypes in PDAC tumors following different treatment regimens, immunofluorescence profiling can predict long-term survival and tumor growth inhibition. This information can aid in personalized treatment and improve patient survival.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Fatemeh Malekpour, Rashin Bahrami, Mahshid Hodjat, Neda Hakimiha, Behnam Bolhari, Aidin Sooratgar, Soheil Niavarzi
Summary: This study investigated the effect of photobiomodulation (PBM) therapy using an 808 nm diode laser on cellular modulation mechanisms in regenerative endodontic procedures (REPs). The results showed that PBM treatment significantly increased cell viability and migration, and enhanced the release of TGF-131 from dentin.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Pranathi Tata, Ramakrishnan Ganesan, Jayati Ray Dutta
Summary: Thin film coatings with potent antibacterial properties are widely used in medical devices, frequently touched surfaces, and food packaging. However, achieving antibacterial performance under both light and dark conditions remains a challenge. In this study, we successfully prepared AgBr-coated ZnO nanorod thin film architecture using a unique surfactant-mediated solution-phase spin-coating approach. The resulting structures showed dual functionality as antimicrobial agents and photosensitizers, effectively enhancing the visible-light photodisinfection efficacy of ZnO nanorods. The concentration of the surfactant-based precursor solution could be modulated to control the AgBr content. Additionally, components like urea and lactic acid were found to enhance the photocatalytic efficiency of the structures.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2024)
