Article
Polymer Science
Anthony Blanchard, Fabrice Gouanve, Eliane Espuche
Summary: This study investigated ethylene vinyl alcohol (EVOH) nanocomposites prepared with different fillers, showing that the properties of the nanocomposites significantly depended on the nature of the fillers. The nanocomposite film prepared with expanded graphite filler exhibited the best mechanical and barrier properties.
Review
Chemistry, Multidisciplinary
Veena Sodha, Syed Shahabuddin, Rama Gaur, Irfan Ahmad, Rajib Bandyopadhyay, Nanthini Sridewi
Summary: Access to clean water is essential for humans and animals, but water scarcity and contamination are global challenges. Wastewater contains pollutants that can cause health issues and environmental damage. Zeolites, with their adsorption and ion-exchange properties, have been used for pollutant removal, and their photocatalytic efficiency can be enhanced by doping with other materials.
Article
Chemistry, Physical
M. Szkoda, A. Ilnicka, Z. Zarach, D. Roda, A. P. Nowak, K. Trzcinski
Summary: The Ti-Fe2O3/In2O3 layers were prepared on different substrates using hydrothermal method and characterized using various techniques. The photoanodes were tested for water oxidation and it was found that the presence of TiO2 nanotubes as a substrate significantly increased the photocurrent generation efficiency. This work highlights the potential of TiO2 nanotubes for improving the performance of photoanodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Juan Felipe Castro-Landinez, Felipe Salcedo-Galan, Jorge Alberto Medina-Perilla
Summary: This study investigates the effects of polar monomer contents in EVA and EVOH on the morphology, mechanical, and barrier properties of PP reinforced with organically modified MMT. The addition of MMT improved the mechanical properties and oxygen permeability of the composites, especially for the most miscible polymeric system of EVA. Higher levels of interactions, provided by VA or OH polar functional groups, led to improved dispersion of nanocomposites and enhanced mechanical and barrier properties of the composite material.
Article
Chemistry, Applied
Yukari Yamazaki, Jan Prech, Yasutaka Kuwahara, Kohsuke Mori, Jirf Cejka, Hiromi Yamashita
Summary: By conducting experiments, it was found that four types of microporous titanosilicates exhibit different catalytic activities in the epoxidation process. Ti-MCM-22 showed the highest activity in epoxidation with H2O2 due to its wide interlayer space, while Ti-UTL exhibited the highest activity in photocatalytic epoxidation with O2, possibly influenced by the incorporated germanium atoms.
Article
Materials Science, Multidisciplinary
Lawrence Kioko Munguti, Francis Birhanu Dejene, Dorah Kawira Muthee
Summary: ZnO/Zeolite Na-A NCs were synthesized via sol-gel process, with high dispersion of ZnO nanoparticles on the surface of Na-A zeolite support. They exhibited enhanced photocatalytic activity and improved porosity.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Multidisciplinary Sciences
Ning Xu, Li Shi, Xudong Pei, Weiyang Zhang, Jian Chen, Zheng Han, Paolo Samori, Jinlan Wang, Peng Wang, Yi Shi, Songlin Li
Summary: In this study, the authors conducted a multiparametric survey on the kinetics of lateral photooxidation in WS2 and MoS2 monolayers, and discovered an unusual non-Marcusian charge transfer mechanism in these low-dimensional systems. They also proposed a scenario of band bending to explain the discrepancy in reaction barriers. These results provide important insights into the fundamental electrochemical reaction theory in low-dimensional systems.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Wieslaw J. Roth, Maksym Opanasenko, Michal Mazur, Barbara Gil, Jiri Cejka, Takayoshi Sasaki
Summary: This article provides an overview of the latest research progress on the exfoliation of zeolites into monolayers. It highlights three main challenges in the field, discusses the feasibility of exfoliation, uniform layer thickness, and potential applications. Four zeolites have been confirmed to directly exfoliate into monolayers, and their characterization methods are introduced. The future directions include the preparation of oriented films and membranes, hierarchical nanocomposites with other active species, and intimate mixtures with other materials.
ADVANCED MATERIALS
(2023)
Article
Environmental Sciences
Khadijeh Khoshdel, Moones Honarmand, Hassan Hassani
Summary: The fabrication of heterojunction nanocomposites using Rosmarinus officinalis as a catalyst has led to the successful synthesis of zeolite/SnO2/CuO, a novel photocatalyst with enhanced performance for the photodegradation of cefixime. The study demonstrates the importance of involved oxidizing species and identifies the inhibitory effect of nitrate ion in the degradation process. Furthermore, the research shows the potential for the reuse of zeolite/SnO2/CuO and the feasibility of discharging the treated cefixime solutions for agricultural irrigation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Dong-Fei Lu, Shangda Li, Ming-Xue Guan, Yu-Peng Han, Yayong Sun, Xin Wu, Fei Wang, Jian Zhang
Summary: In this study, the first visible-light-active titanium sulfonate metal-organic framework (FIR-138) with 2-fold interpenetrated srs topology was successfully synthesized. FIR-138 exhibited good stability and excellent visible-light absorption performance, and demonstrated outstanding visible-light photocatalytic performance in organic reactions.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Kuan Wang, Bing Xue, Jun-Lei Wang, Zhen-Hong He, Song-Song Li, Dan Wang, Wei-Tao Wang, Yang Yang, Zhao-Tie Liu
Summary: A composite photocatalyst for the photocatalytic oxidation of cyclohexane to cyclohexanone was successfully constructed and demonstrated desired performance under simulated solar light. Compared to pure TiO2, the composite catalyst showed higher catalytic activity, selectivity, cycling durability, and recoverability. The enhanced performance was attributed to N-doping for visible-light absorption and the p-n heterointerface for fast separation of photoformed electron-hole pairs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Abeer S. Altowyan, Mohamed Shaban, Zeinab M. Faidey, Khaled Abdelkarem, Mawaheb Al-Dossari, N. S. Abd El-Gawaad, Mohamed G. M. Kordy
Summary: In this study, a low-cost, high-yield hydrothermal treatment was used to produce nanozeolite, nanoserpentine, and Zeo/Serp nanocomposites. The generated nanostructures showed various morphologies such as nanofibers, nanorods, and hybrid nanofibril/nanorods. The Zeo/Serp (2:1) composite exhibited superior performance as a photoelectrochemical catalyst for solar hydrogen generation compared to its constituents. This research opens up new possibilities for low-cost materials in efficient solar hydrogen production.
Article
Biochemistry & Molecular Biology
Lucia I. Moran Ayala, Francisca Aparicio, Vittorio Boffa, Giuliana Magnacca, Luciano Carlos, Gabriela N. Bosio, Daniel O. Martire
Summary: Magnetic Fe-Cu nanocomposites with high adsorption capacity and photocatalytic properties were synthesized using soluble substances from urban biowaste. The materials exhibited excellent adsorption capacities for As(III) and demonstrated significant photocatalytic performance. The study investigated the effects of pyrolysis temperature on the catalytic activity and revealed the reaction mechanism of As(III) photooxidation.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2023)
Article
Chemistry, Analytical
Lisa Rita Magnaghi, Camilla Zanoni, Giancarla Alberti, Paolo Quadrelli, Raffaela Biesuz
Summary: Intelligent packaging is an emerging trend in the food industry, particularly for perishable foods like milk and dairy products. The miniaturized BCP-EVOH@ sensor, which consists of bromocresol purple (BCP) covalently bound to ethylene-vinyl alcohol (EVOH) copolymer, allows for milk freshness monitoring during chilled storage with naked-eye evaluation and chemometric-assisted spoilage modelling and measurements.
Article
Chemistry, Multidisciplinary
Vassilis J. Inglezakis, Aliya Kudarova, Almira Guney, Nurassyl Kinayat, Zhandos Tauanov
Summary: The reduction and elimination of mercury in industrial activities and waste streams are crucial for the circular economy. Natural zeolite impregnated with silver was found to effectively remove mercury from aqueous solutions. The effectiveness of the zeolites was influenced by the form of silver and the speciation of mercury in the aqueous phase. Compared to commercial adsorbents, natural zeolite and the Ag0 form performed better in mercury removal. The use of abundant and environmentally-friendly natural zeolite as a sustainable alternative adsorbent is attractive.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Polymer Science
Tetsu Sato, Mariko Takahashi, Takeshi Saito, Masahito Toyonaga, Itsuo Tanuma, Rie Yamada, Satoru Hosoda
Summary: An automatic evaluation system for photooxidation has been developed and successfully applied to assess the photo-OIT of LDPE samples containing photooxidation stabilizers. The system allows independent setting of various measurement conditions and provides detailed information on the photooxidation process.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Zongzheng Zuo, Shuxue Zhou
Summary: In this study, three fluoroalkyl trimethoxysilane (FATMS) additives with different chain lengths were incorporated into a two-component polyurethane clearcoat to improve its hydrophobic durability. The coatings modified with FATMS maintained their surface hydrophobicity under various conditions, but quickly lost it when exposed to both UV irradiation and/or high temperature with water. The results suggest that the FATMS route is more suitable for indoor applications at room temperature.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Song Li, Feng Zhao, Xueya Wang, Zhihua Liu, Jingze Guo, Yutong Li, Shuangmei Tan, Zhenxiang Xin, Shuai Zhao, Lin Li
Summary: Green flame retardants have garnered attention for their environmental friendliness, but current options fall short in achieving high flame retardancy for flammable polymers and maintaining environmental protection. This study takes a two-pronged approach to address flame retardants and the flame-retardant process. An eco-friendly bio-based synergistic flame retardant (PAU), synthesized using phytic acid (PA) and urea (U), is used to create a flame retardant coating that can be directly applied to any surface shape using polydopamine as an adhesive. The resulting EPS-PAU exhibits excellent flame retardancy, smoke suppression, and light weight while only slightly increasing the density.
POLYMER DEGRADATION AND STABILITY
(2024)
