Article
Materials Science, Multidisciplinary
Junwei Wei, Shuoming Wei, Na Chang, Haitao Wang, Jimei Zhang, Wei Shao
Summary: In this study, PbS quantum dots/ZnO nanorods/silver nanowires composite photocatalysts were successfully synthesized, and it was found that the number of SILAR cycles significantly affects the performance of the composite material, with the material cycled 9 times showing the best photocatalytic performance for the degradation of methylene blue.
Article
Biochemistry & Molecular Biology
Mariana Busila, Viorica Musat, Petrica Alexandru, Cosmin Romanitan, Oana Brincoveanu, Vasilica Tucureanu, Iuliana Mihalache, Alina-Viorica Iancu, Violeta Dediu
Summary: The use of a combination of nanoparticles as antimicrobial agents and efficient removal of persistent pollutants from wastewater is an important strategy. This study synthesized ZnO/Au and ZnO/Ag nanocomposites, analyzed their structure and morphology, and evaluated their antimicrobial properties and photocatalytic activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Energy & Fuels
Xiaobing Yang, Xiangrui Yang, Shichao Wu
Summary: Metal-organic frameworks (MOFs) and Ag-doped ZnO exhibit excellent photocatalytic performance in the degradation of Rhodamine (RhB). Ag/ZnO shows superior photocatalytic activity and stability, which may be attributed to the synergistic effect of Ag nanoparticles and ZnO.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Engineering, Environmental
Kabuyaya Kighuta, Anantha-Iyengar Gopalan, Dong-Eun Lee, Gopalan Saianand, Yao-Long Hou, Sung-Sik Park, Kwang-Pill Lee, Jun-Cheol Lee, Wha-Jung Kim
Summary: This study focused on the design and optimization of TiO2-ZnO composite using response surface methodology, with evaluation of photocatalytic NOx removal efficiency. Experimental results validated the RSM predictions, showing different efficiencies for NOx removal based on calcination temperature and ZnO weight percent. The best photocatalytic performance was observed in the composite with 2.1 wt % of ZnO calcined at 558°C.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Ceramics
Iliana E. Medina-Ramirez, Adriana H. Marroquin-Zamudio, Jorge H. Martinez-Montelongo, Yolanda Romo-Lozano, Juan Antonio Zapien, A. Perez-Larios
Summary: Zinc oxide is a versatile nanostructured material that can be easily tuned for specific applications. In this study, ZnO-Cu2+ and Ag@ZnO-Cu2+ materials were synthesized and characterized for their enhanced antimicrobial activity and visible light activity. The results showed excellent antifungal activity and visible light activity of the prepared materials.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Vu Hoang Huong, Tu Cam Nguyen, Cong Doanh Sai, Nguyen Hai Pham, An Bang Ngac, Thanh Binh Nguyen, Hong Van Bui, Vu Van-Phu, Binh Thanh Nguyen, Long Van Dang, Trang Thi Huyen Le, Thu Thi Nguyen, Dang Van Do
Summary: A series of x%Ag/ZnO (x: 0; 1; 2; 5; 10) nanostructures were synthesized and characterized. The addition of Ag nanoparticles on the surface of ZnO resulted in a decrease in band gap and photoluminescence intensity. The photocatalytic activity of the Ag/ZnO nanostructure was evaluated using methylene blue (MB) as the model pollutant, with the 5%Ag/ZnO showing the highest effectiveness. The proposed mechanism for the charge transfer process was based on radical scavenging experiments, confirming the role of superoxide as the dominant reactive species. Furthermore, the 5%Ag/ZnO exhibited stability and reusability.
Review
Environmental Sciences
Hanane Chakhtouna, Hanane Benzeid, Nadia Zari, Abou el Kacem Qaiss, Rachid Bouhfid
Summary: Doping silver nanoparticles into titanium dioxide semiconductor is an effective strategy to enhance its photocatalytic activity, prevent recombination of electron/hole pairs, and improve bactericidal performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Chuanfeng Zang, Hao Chen, Xiangye Han, Wei Zhang, Junfang Wu, Fanghua Liang, Jiamu Dai, Hongchao Liu, Guangyu Zhang, Ke-Qin Zhang, Mingzheng Ge
Summary: PVDF/ZnO/CuS photocatalysts with ZnO/CuS heterojunctions were synthesized, which showed improved visible-light photocatalytic efficiency and excellent recyclability.
Article
Environmental Sciences
Marwa Akkari, Afrah Bardaoui, Mohamed Amine Djebbi, Abdesslem Ben Haj Amara, Radhouane Chtourou
Summary: This study focused on the development and characterization of Ag-ZnO/sepiolite photocatalysts. The results showed that the Ag-ZnO/sepiolite photocatalysts prepared by a simple hydrothermal route exhibited enhanced photocatalytic activity, with the sample doped with 5% Ag showing the best performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Ceramics
Henry Gandelman, Andre L. da Silva, Bruno Ramos, Douglas Gouvea
Summary: This study investigated the effect of Sb doping on the properties of TiO2 nanoparticles, finding that Sb interfacial segregation at both surface and grain boundaries can increase the specific surface areas, change the crystallite sizes, affect CO2 adsorption, and enhance photocatalytic activity, with a 53% increase in activity for 0.05 mol% Sb-doped TiO2 compared to undoped TiO2.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
L. Munoz-Fernandez, L. S. Gomez-Villalba, O. Milosevic, M. E. Rabanal
Summary: This study presents the recent advances in the field of ZnO/Ag catalysts and introduces a facile solvothermal method to synthesize hierarchical ZnO nanowires decorated with Ag nanoparticles. The results show that the formation of ZnO nanowires and Ag nanoparticles is affected by experimental conditions, including synthesis time, Ag+/Zn2+ molar ratio, and the presence of CTAB. The photocatalytic activity of the catalyst is evaluated by studying the degradation time of methylene blue.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Environmental
Hongyi Tang, Xiao'ai Luo, Wenting Li, Yue Pan, Siqi Wang, Hao Ma, Yu Shen, Ruimei Fang, Fan Dong
Summary: In this study, a in-situ method was designed to construct a ZnO/ZnAl-LDH heterojunction catalyst loaded with metallic Ag. The optimal catalyst exhibited high photocatalytic performance, with efficient removal of NO pollutant and significant inhibition of toxic NO2 generation. This high activity can be attributed to the formation of Ag/ZnO/ZnAl-LDH heterojunction, which promotes charge separation and transfer, and the unique property of Ag nanoparticle with localized surface plasmonic resonance, enhancing light absorption capacity and accelerating charge transfer.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Meditha Hudandini, Nurdiana Ratna Puri, Sugeng Winardi, Widiyastuti Widiyastuti, Manabu Shimada, Kusdianto Kusdianto
Summary: The treatment of wastewater from the textile industry is an important environmental issue, and photodegradation is considered a promising method for its mitigation. This study demonstrates that the loading of Ag onto ZnO enhances its catalytic activity and achieves optimal photodegradation results at a carrier gas ratio of 0:1.
Article
Chemistry, Analytical
Getu Kassegn Weldegebrieal, Hirpo Hinsene Dube, Assefu Kassegn Sibhatu
Summary: CdO/ZnO nanocomposites were synthesized and studied for their photocatalytic activity and ability to degrade methylene blue dye. Response surface methodology was used to determine optimal catalyst dose, dye concentration, and reaction mixture pH, and the predicted values were confirmed by experimental results. The CdO/ZnO nanocomposite catalyst showed high degradation efficiency over 4 consecutive cycles, indicating its potential for practical wastewater treatment of toxic organic pollutants.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Xuechen Li, Chaojie Shi, Zixuan Feng, Jie He, Rui Zhang, Zhengchun Yang, Peng Pan, Huayi Li, Deqiang Feng, Lingcheng Zheng
Summary: In this study, Si nanowires/ZnFe2O4/Ag composite photocatalyst is prepared through metal-assisted chemical etching and hydrothermal methods. It exhibits high photocatalytic performance under visible light, with a photocurrent density of 1.76 mA/cm2 and a Methyl orange photodegradation rate of 19% within 90 min. Magnetic field is further applied to enhance the photocatalytic efficiency by increasing carrier transfer and charge separation. The composite photocatalyst shows negative magnetoresistance, allowing for more effective transfer of photo-generated carriers to the electrode surface and improved photocatalytic performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Dalia Sanchez-Rodriguez, Alma Berenice Jasso-Salcedo, Niklas Hedin, Tamara L. Church, Aitor Aizpuru, Vladimir Alonso Escobar-Barrios
Article
Polymer Science
Elzy Aleman Espinosa, Vladimir Escobar-Barrios, Gabriela Palestino Escobedo, Miguel A. Waldo Mendoza
Summary: The study focused on the thermal and mechanical behavior of polymeric composites based on polyethylene, HDPE, UHMWPE, PCL, and a ceramic filler. The results showed that the thermal transitions of the composites varied depending on the PCL concentration, and the mechanical behavior was affected by both the polyethylene ratio and PCL content. The composite with 30% UHMWPE and 10% PCL exhibited the highest toughness value due to good polymer interaction, making them potentially suitable for biomedical applications such as prostheses.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
D. Chavez, C. Gomez-Solis, A. Mtz-Enriquez, V Rodriguez-Gonzalez, V Escobar-Barrios, C. R. Garcia, J. Oliva
Summary: Flexible graphene composites decorated with V2O5 micmbelts were utilized as sensors for NO2 detection, showing higher response to higher concentrations of NO2 at room temperature. The sensor demonstrated fast response/recovery times, saturation after several cycles of use, and selectivity in the presence of other gases like CO2.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Polymer Science
Antonio Guerra-Contreras, Abygail Camacho-Ramirez, Miguel Olvera-Sosa, Raul Gonzalez-Garcia, Gabriela Palestino
Summary: The paper presents an alternative method for rust removal on metallic surfaces using poly(acrylic acid) and poly(acrylic acid-co-itaconic acid), which proves to be effective and environmentally friendly. Experimental results indicate that the molecular weight of the polymers, and thus the rust removal effectiveness, can be controlled by adjusting the molar ratio of the initiator and monomers.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Miguel Olvera-Sosa, Sergio Rosales-Mendoza, Gabriela S. Garcia-Briones, Maria De Lourdes Betancourt-Mendiola, Omar Gonzalez-Ortega, Gabriela Palestino
Summary: The innovative synthesis of a bio-based poly(acrylic acid) and Schizochytrium sp. resulted in new hybrid biopolymers with thermal and mechanical properties dependent on microalgae biomass type and concentration. The copolymers showed different behaviors based on the source of microalgae used in the synthesis.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
K. K. Gallegos-Medrano, V. Escobar-Barrios, D. A. Santamaria-Razo, E. J. Gutierrez-Castaneda, J. Vallejo Montesinos, M. G. Pena-Juarez, J. A. Gonzalez-Calderon
Summary: The influence of different length dicarboxylic acids functionalized titanium dioxide on the crystallization of isotactic polypropylene was investigated. It was found that the chain length of the dicarboxylic acids, particle size, and thermal treatment all affect the crystallization type and content, as well as the mechanical properties of the resulting composite materials.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Engineering, Biomedical
Juan Carlos Flores-Arriaga, Daniel Chavarria-Bolanos, Amaury de Jesus Pozos-Guillen, Vladimir Alonso Escobar-Barrios, Bernardino Isaac Cerda-Cristerna
Summary: The study successfully formulated a Tramadol-Dexketoprofen combination loaded in poly(vinyl alcohol) (PVA) film with different molecular weights and crosslinked with citric acid to control drug release rate. The results showed that crosslinked PVA films have a prolonged release rate compared to non-crosslinked films, indicating potential for promoting local analgesia for postoperative pain control.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2021)
Article
Polymer Science
L. E. Maldonado-Lopez, G. A. Fimbres-Weihs, V. A. Escobar-Barrios
Summary: The presence of chloroform as a co-solvent in polysulfone/NMP/water mixtures affects the morphology of membranes fabricated by the phase inversion method by deterring the formation of finger-like macrovoids. Prediction of membrane morphology variations was proposed using Ruaan's parameter (phi), turbidity tests, and the linearized method for the binodal curve, which was verified through direct observation with an optical microscope. The addition of chloroform resulted in a 50% reduction in the homogeneous region on the ternary diagram, suggesting delayed precipitation of the polymer, and an increase in the apparent diffusivity value was also observed.
Review
Crystallography
Benita Ortega-Berlanga, Lourdes Betancourt-Mendiola, Cesar del Angel-Olarte, Luis Hernandez-Adame, Sergio Rosales-Mendoza, Gabriela Palestino
Summary: In the past decade, there has been an increase in publications focusing on the novel physical and chemical aspects of gadolinium-based oxide and oxysulfide particles, particularly in the biomedical field. These materials show promising optical properties for developing new probes and bioimaging techniques, with interesting optical behavior influenced by various factors. The review summarizes the latest research on evaluating the optical properties of these particles and their potential applications in MRI contrast agents and drug delivery vehicles, while also discussing administration routes, biodistribution, cytotoxicity, and future perspectives in the field.
Article
Construction & Building Technology
Eric Enrique Sanchez Diaz, Vladimir A. Escobar Barrios
Summary: This study revises the use of geopolymers for energy conversion, with a focus on their conductive properties, Seebeck effect, and piezoelectric effect. It discusses the effects of materials like TiO2 and carbon-based materials, as well as alkaline activator concentrations, on geopolymers. The research emphasizes the piezoelectric effects on geopolymers when incorporating graphene and TiO2 as fillers, showcasing their potential in solar, thermal, and mechanical energy conversion.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Polymer Science
Mauricio Sanchez-Luna, Miroslav Otmar, Libor Kobera, Jan Zitka, Vladimir Escobar-Barrios
Summary: The indirect sulfonation of poly(styrene-(ethylene-butylene)-styrene) via chloromethylation is an effective method to introduce sulfonic acid groups for proton exchange capability. The chemically modified polymeric membranes exhibited high water uptake, ion exchange capacity, and ion conductivity, making them suitable for proton exchange membrane applications.
EXPRESS POLYMER LETTERS
(2022)
Article
Pharmacology & Pharmacy
Ileana Garcia-Silva, Miguel Olvera-Sosa, Benita Ortega-Berlanga, Victor Ruiz-Rodriguez, Gabriela Palestino, Sergio Rosales-Mendoza
Summary: In this study, hybrid polyacrylic acid and Schizochytrium sp. microalgae (PAA/Schizo) microgels were synthesized using the cell wall fraction as crosslinker. The physicochemical characterization showed that the microgels were stable, negatively charged, and not toxic to cells. The microgels demonstrated efficient loading of bovine serum albumin (BSA) and showed potential as antigen delivery vehicles for immunotherapy development.
Article
Dentistry, Oral Surgery & Medicine
Jose R. Gutierrez-Camacho, Luis Alejandro Aguilera-Galaviz, G. Sanchez-Balderas, Gabriela Palestino, Norma Veronica Zavala-Alonso, Cesar Gaitan-Fonseca
Summary: This study evaluated enamel surface hydrophobic modification as a method to prevent demineralization. The results showed that 1% and 4% octadeyltrichlorosilane provided protection to the tooth enamel surface, preventing demineralization in acidic medium. This method is feasible for clinical practice.
ODOVTOS INTERNATIONAL JOURNAL OF DENTAL SCIENCES
(2022)
Review
Chemistry, Physical
Luis Valencia, Rishab Handa, Susanna Monti, Alma Berenice Jasso-Salcedo, Dimitrios Georgouvelas, Ilse Magana, Ramon Diaz de Leon, Krassimir P. Velikov, Aji P. Mathew, Sugam Kumar
Summary: Nanocellulose-based materials are a new class of bio-based building materials that offer high performance and sustainability. However, they have drawbacks such as interaction with bacteria and proteins, low conductivity, poor thermal stability, and high water absorption. Mineralization by growing inorganic subcomponents in situ can improve these issues and introduce new functionalities.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Analytical
Candida Anahy Cisneros-Covarrubias, Gabriela Palestino, Cesar F. A. Gomez-Duran, Sergio Rosales-Mendoza, Maria de Lourdes Betancourt-Mendiola
Summary: An optimized microwave-assisted method for chemical functionalization of porous silicon particles was proposed in this study, showing improved efficiency and reduced reaction time. The impact of microwave irradiation on surface coverage was found to be dependent on various factors, including the surface chemistry of PSip and reaction conditions.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)
