Article
Chemistry, Physical
Ixchel Alejandra Mejia-Estrella, Alejandro Perez Larios, Belkis Sulbaran-Rangel, Carlos Alberto Guzman Gonzalez
Summary: This study successfully synthesized Pt/TiO2 and TiO2-CeO2 (1%, 5% and 10% CeO2) nanostructured catalysts through the sol-gel and impregnation method, and characterized them through various spectroscopy and surface techniques. The results showed that the addition of CeO2 increased the pore diameter and surface area of the supports, and decreased the size of Pt nanoparticles. The observed shift in energy band gap by UV-vis confirmed the feasibility of these materials for photocatalytic reactions using visible light. In the photocatalytic oxidation activity test, these materials achieved a removal efficiency of 98% for the herbicide 2,4-dichlorophenoxyacetic acid, compared to 32% for unmodified TiO2.
Article
Materials Science, Multidisciplinary
Sh Tabatabai Yazdi, M. Mousavi, Gh H. Khorrami
Summary: V2-xCoxO5 nanoparticles with Co concentrations up to x = 0.2 were synthesized via a sol-gel route in gelatin medium. The synthesized particles mainly consist of crystalline alpha-V2O5 phase, with the particle size increasing from about 34 to 49 nm as the Co content rises. These nanoparticles are found to be direct band gap semiconductors with band gap energies controlled by surface and interface effects rather than chemical composition, and the ferromagnetic nature is influenced by Co substitution.
MATERIALS TODAY COMMUNICATIONS
(2021)
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
Chemistry, Applied
Mohammad Dinari, Firooze Dadkhah
Summary: The study utilized a green method to enhance the photocatalytic activity of ZnAl-LDH by depositing Ag and magnetite nanoparticles on the surface. Structural and electrochemical characterization analysis confirmed the superior performance of the composite compared to the original LDH. Mineralization experiments showed a significant increase in the photodegradation rate of the composite, with active radicals playing a key role in the degradation process.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Ummer Altaf, Mohd Zubair Ansari, Seemin Rubab
Summary: The synthesis of Sn1-xAlxO2 (x = 0.0, 0.01, 0.02, 0.03, 0.04) nanoparticles by the sol-gel method and their characterization using various techniques revealed that increasing the aluminium content led to a decrease in the crystallite size and optical band gap. Photoluminance measurements showed violet emissions for all samples, with the 3% doped sample exhibiting the lowest intensity, indicating its potential for applications in photocatalysis and lithium-ion batteries. Additionally, 3% aluminium doping was found to be the optimum concentration for tin oxide samples in photocatalytic applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Ceramics
Sajid Ali Ansari
Summary: Solar energy conversion is vital for the development of visible light photocatalysts in various fields. This study focused on the use of elemental semiconductor red phosphorus/ZnO nanohybrid (Z-Rp) for visible light driven photocatalytic activity in pollutant degradation. The addition of red phosphorus improved the structural and optical properties of zinc oxide, leading to enhanced visible light photocatalytic activity. The prepared Z-Rp nanohybrids exhibited excellent performance in degrading methyl orange dye under visible light, making them a sustainable alternative to metal-based plasmonic nanoparticles for solar energy conversion.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Pingyun Li, Han Wang, Shengxiang Jiang, Jinling Wang, Zhenhua Cao, Jiazhi Yang
Summary: This study reports on the design of metal/N-doped carbon nanocatalysts through the sol-gel method, highlighting the importance of selecting specific polymerization agents and calcination conditions to achieve high catalysis performance. By using different polymerization agents and calcination temperatures, the nanocatalysts exhibited effective hydrogenation reduction reactions. These findings provide new insights into the design and application of metal/N-doped carbon nanocatalysts.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
Khushboo Punia, Ganesh Lal, Saurabh Dalela, Satya Narain Dolia, Parvez Ahmad Alvi, Shiv K. Barbar, Kunal B. Modi, Sudhish Kumar
Summary: The study reveals the impact of Gd substitution on the structural, optical, photoluminescence, and magnetic properties of Zn1-xGdxO nanocrystals, including crystallinity, band gap energy, emission characteristics, and magnetization behavior. Gd substitution results in a reduction in the average crystallite size of Zn1-xGdxO nanocrystals and confirms the coexistence of paramagnetic and weak ferromagnetic ordering in the presence of Gd.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Mingyue Sun, Jinshui Xu, Jinyuan Ma, Ge Xu
Summary: An amorphous TiO2 nanoparticle (8-AT) was prepared via sol-gel method with pH adjustment to 8 using ammonia. The 8-AT had a particle size of 20-24 nm and specific surface area of 365.68 m2/g. It showed higher degradation efficiency for tetracycline (TC) compared to anatase TiO2 and P25, achieving 93.9% degradation within 30 minutes in dark reaction and 60 minutes under visible light irradiation. The study proposed a possible degradation mechanism based on the adsorption-photocatalytic activity of 8-AT.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Muchen Wu, Chong Ouyang, Ziran Ye, Shunbo Li, Zhanglian Hong, Mingjia Zhi
Summary: Composite aerogels with metallic Ag and semiconductor CeO2 phases were prepared and studied for photocatalytic CO2 reduction. The addition of Ag greatly improved the activity and selectivity of the composite aerogels, attributed to the surface plasmon resonance effect brought by Ag.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Environmental Sciences
S. Gonzalez-Moran, B. Gonzalez, M. A. Vicente, R. Trujillano, V Rives, A. Gil, S. A. Korili
Summary: Potassium birnessites were prepared using two methods, and their properties were characterized. The solids showed good catalytic behavior, but the calcination step in the preparation process needs improvement to enhance the catalytic performance.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
S. L. Varun, S. Athira, Annamma John, Sam Solomon
Summary: Nanocrystalline Ba4Ce2-xNdxHf2O11 (x = 0, 0.25, 0.5, 0.75) was synthesized by combustion method and characterized using XRD, FTIR, and Raman spectroscopy. Morphological studies revealed the presence of nanoparticles and nanorods. UV-Vis diffuse reflectance spectroscopy showed high absorption in the UV region for all samples, with better absorption in the visible region for Nd-substituted samples. Photocatalytic activity studies demonstrated the highest activity for the sample with the highest Nd substitution.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
W. Azouzi, I Benabdallah, A. Essyed, M. Tahri, H. Labrim, M. Benaissa
Summary: The band-gap energy of LaFeO3 can be controlled by substituting Fe with monovalent Ag+. This leads to the formation of highly porous crystallites with lattice distortion and a decrease in band-gap energy value, making it promising for photovoltaic applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Ceramics
Moniruzzaman Jamal, Md Muktadir Billah, Sikder Ashikuzzaman Ayon
Summary: The synthesis and characterization of pristine and fluorine-doped copper oxide nanoparticles were studied. The doping of fluorine resulted in a decrease in crystallinity, crystallite size, and phase stability of copper oxide. Morphological analysis showed fused irregularly shaped particles and a reduction in particle size with doping. Photoluminescence study revealed an impact of fluorine doping on defect concentration, while UV-visible spectroscopy indicated a decrease in optical band gap. Both pure and doped copper oxide nanoparticles exhibited room temperature ferromagnetism with slight paramagnetic contribution. These interesting opto-structural and magnetic properties make fluorine-doped copper oxide nanoparticles promising candidates for various applications such as solar cells, magnetic storage devices, magnetic sensors, photocatalysis, photonics, and spintronics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Endris Taju Seid, Francis B. Dejene
Summary: Doped ZnO nanoparticles were synthesized using sol-gel method with simultaneous incorporation of Gallium (Ga) and Indium (In). XRD analysis indicated pure hexagonal wurtzite structure, and different dopant ratios led to significant variations in crystallite sizes. Co-doped samples exhibited higher reflectance in the visible region compared to undoped and single doped samples.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Cristina Trejo-Solis, Mayra A. Alvarez-Lemus, Dolores Jimenez-Farfan, Isabel Anaya-Rubio, Rosendo Lopez-Gonzalez, Guadalupe Palencia, Dora M. Frias-Marquez, Gerardo Gonzalez-Garcia, Carmen Rubio-Osornio, Minerva Calvillo-Velasco, Guadalupe Marquez-Chable
CHEMICAL BIOLOGY & DRUG DESIGN
(2017)
Article
Biotechnology & Applied Microbiology
Cinthia Garcia-Mendoza, Socorro Oros-Ruiz, Agileo Hernandez-Gordillo, Rosendo Lopez, Gabriela Jacome-Acatitla, Hector A. Calderon, Ricardo Gomez
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2016)
Article
Biotechnology & Applied Microbiology
Socorro Oros-Ruiz, Agileo Hernandez-Gordillo, Cinthia Garcia-Mendoza, Arturo A. Rodriguez-Rodriguez, Ricardo Gomez
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2016)
Article
Chemistry, Multidisciplinary
Diana Guerrero-Araque, Prospero Acevedo-Pena, David Ramirez-Ortega, Ricardo Gomez
NEW JOURNAL OF CHEMISTRY
(2017)
Article
Biotechnology & Applied Microbiology
Daniela J. Hernandez-Castillo, Mayra A. Alvarez-Lemus, Erick N. de la Cruz-Hernandez, Rosendo Lopez-Gonzalez, Cinthia Garcia Mendoza
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2019)
Article
Biotechnology & Applied Microbiology
Clara Tzompantzi-Flores, Julio Cesar Castillo-Rodriguez, Ricardo Gomez, Francisco Tzompantzi, Raul Perez-Hernandez, Veronica De la Luz Tlapaya, Carlos Eduardo Santolalla-Vargas
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2019)
Article
Nanoscience & Nanotechnology
M. C. Uribe Lopez, M. A. Alvarez Lemus, M. C. Hidalgo, R. Lopez Gonzalez, P. Quintana Owen, S. Oros-Ruiz, S. A. Uribe Lopez, J. Acosta
JOURNAL OF NANOMATERIALS
(2019)
Article
Polymer Science
Daniela J. Hernandez-Castillo, Erick Natividad de la Cruz Hernandez, Dora M. Frias Marquez, Richard D. Tilley, Lucy Gloag, Patricia Quintana Owen, Rosendo Lopez Gonzalez, Mayra A. Alvarez Lemus
Summary: A pH-responsive drug-carrier based on chitosan-silica nanospheres was developed for the delivery of Albendazole, showing controlled release of the drug and delayed release due to the presence of chitosan. In vitro evaluation demonstrated significant reduction in cell proliferation for cervical cancer cell lines, indicating potential for development of prolonged release drug delivery systems.
Article
Biotechnology & Applied Microbiology
Cinthia Garcia-Mendoza, Williams Eduardo Sanchez Rivera, Mayra A. Alvarez-Lemus, Gabriela Jacome-Acatitla, Dora Maria Frias Marquez, Rosendo Lopez-Gonzalez
Summary: The study investigates the formation of a photocatalyst formed by ZnS/ZnO anchored to an organic molecule and evaluates its performance in hydrogen production. The results demonstrate that the organic material and the ZnS/ZnO work together to improve the photocatalytic activity and stability of the material, increasing hydrogen production under UV light. The study also highlights the possibility of obtaining an efficient material with excellent photocatalytic performance through a relatively simple synthesis method.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
E. Salaya-Geronimo, D. S. Garcia-Zaleta, G. Jacome-Acatitla, E. Huerta-Garcia, R. Lopez-Gonzalez, A. Reyes-Montero, A. M. Abdel-Mageed
Summary: The study investigated the effects of Sr and Ca doping on the structural and photocatalytic properties of BiFeO3. Doped samples showed higher photocatalytic activity compared to the undoped BiFeO3 sample, attributed to enhanced visible light absorption, synergistic effects of different phases, and successful separation of photogenerated electrons and holes.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Diego Hernandez-Acosta, Gabriela Jacome-Acatitla, Cinthia Garcia-Mendoza, Mayra Alvarez-Lemus, Rosendo Lopez-Gonzalez, Francisco Tzompantzi
Summary: This study prepared magnetic ZnFe2O4 catalysts using different complexing agents and investigated their catalytic activity for the photodegradation of 4-chlorophenol under UV light irradiation. The results showed that the catalyst synthesized using citric acid exhibited the best activity and could function at different pH levels.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Rosendo Lopez Gonzalez, Orbelin de la Fuente, Ruth Lezama Garcia, Melina del Carmen Uribe Lopez, Patricia Quintana Owen, Maria Carmen Hidalgo Lopez, Mayra Angelica Alvarez Lemus
Summary: Phenol and its derivatives pose a serious environmental concern, but zinc oxide-based photocatalysts show promise in addressing this issue. ZnO nanoparticles, synthesized through precipitation and calcination methods, exhibited good photocatalytic activity under visible light. The study also found that the generation of hydroxyl radicals decreased with the reuse of ZnO, likely due to the presence of adsorbed by-products on its surface.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Mayra A. Alvarez Lemus, Ariana Lizbeth Jimenez Rodriguez, Cinthia Garcia Mendoza, Ruth Lezama Garcia, David S. Garcia Zaleta, Dora M. Frias Marquez, Patricia Quintana Owen, Rosendo Lopez Gonzalez
Summary: In this study, the effect of nickel on the photocatalytic properties of TiO2 nanostructures was investigated. The obtained powders were thermally treated and characterized. The Ni/TiO2-HT-400 sample showed high efficiency in the photoreduction of 4-nitrophenol, with a decrease in efficiency over subsequent cycles. The increase in photocatalytic reduction was attributed to the presence of oxygen vacancies and reduced electron-hole recombination.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Angela G. Romero-Villegas, Clara Tzompantzi-Flores, Raul Perez Hernandez, Arturo Barrera-Rodriguez, Francisco Tzompantzi, Ricardo Gomez
Summary: In this study, a cadmium-modified layered double hydroxide support was synthesized using a one-pot coprecipitation method, followed by sulfuring at different percentages using a solvothermal method. The samples were then analyzed using various characterization techniques. The synthesized and uncalcined materials were tested for hydrogen production from both water and a methanol-water solution under UV-light irradiation. The results showed that sulphuration significantly improved the photocatalytic activity, with maximum rate constants of hydrogen production observed in the methanol-water solution and water.
Article
Engineering, Civil
Ebelia Del Angel, Mayra Agustina Pantoja, Rosendo Lopez, Alida Elizabeth Cruz
Summary: Solid residues of sugar cane industry can be used to produce activated carbon, which shows similar adsorption efficiency to commercial activated carbon in removing oils from domestic wastewater.
TECNOLOGIA Y CIENCIAS DEL AGUA
(2022)