Article
Multidisciplinary Sciences
Huimin Yang, Shibo Xi, Na Guo, Mu Wang, Lingmei Liu, Pin Lyu, Xiaolong Yu, Jing Li, Haomin Xu, Xiao Hai, Zejun Li, Xinzhe Li, Tao Sun, Xiaoxu Zhao, Yu Han, Wei Yu, Jie Wu, Chun Zhang, Honghan Fei, Ming Joo Koh, Jiong Lu
Summary: A ligand exchange strategy is used to exfoliate bulk cuprate crystals into atomically thin 2D cuprate layers, which have periodic unsaturated copper single sites that promote efficient oxidative Chan-Lam coupling. The catalytic active sites in the 2D cuprate layers are found to be coordinatively unsaturated CuO4(II) single sites and Cu(I) species, which are stable and recyclable in reactions and show good performance in complex molecule derivatization.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Multidisciplinary
Abdallah F. Zedan, Safa Gaber, Amina S. AlJaber, Kyriaki Polychronopoulou
Summary: Significant enhancement of the catalytic activity for CO oxidation reaction was achieved by alloying Pd-based catalysts and utilizing different support materials, especially through nanointerfaces and morphology effects. The Pd-Cu/TiO2 catalyst system, with optimized nanowire morphology, shows the highest CO conversion rate at near-ambient temperatures, demonstrating its potential as an efficient and durable catalyst for CO oxidation reaction.
Article
Optics
Ali Saleh Alkadem Idriss, Nik Noor Ashikin Nik Ab Razak, Naser M. Ahmed, Youssef Aboubaker Abdulla
Summary: A novel TiO2/Cu/TiO2 multilayer thin film dosimeter with faster deposition rate, high purity, and uniformity was fabricated. The film has an amorphous, porous structure with spherical nanoparticles and is transparent in the visible region. The optimum TL intensity was found with the TiO2 (445 nm) / 14.2 nm Cu / TiO2 (130 nm) sequence. The multilayer film is suitable for thermoluminescence dosimetric applications.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Coatings & Films
Yan Jiang, Huifang Liu, Kaixia Shi, Chun Tang, Juan Song
Summary: The wettability of TiO2/PDA thin films increases and then decreases with the increase of annealing temperature, mainly due to the evolution of the film structure.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Jun Li, Xin-Gui Tang, Qiu-Xiang Liu, Yan-Ping Jiang, Wen-Hua Li
Summary: This study successfully fabricated TiO2-SrTiO3 composite oxide thin films via sol-gel method and investigated their crystal phase, surface morphology, and chemical compositions through various characterizations. The results show that the composite oxide exhibits enhanced photoelectric properties, with the photoluminescence spectrum closely related to charge carrier trapping information. Additionally, first-principle calculations based on DFT provided insights into the energy band and state density of the composite oxide, deepening understanding of its photoelectric properties and electron structure for potential optoelectronic device applications.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Physical
Almudena Aguinaco, Jose M. Manuel, Eduardo Blanco, Manuel Dominguez, Rocio Litran, Juan J. Delgado, Milagrosa Ramirez-del-Solar
Summary: The optical properties of 5wt% Fe3O4-TiO2 thin films were evaluated in detail in this study. The results showed that the incorporation of 5wt% Fe3O4 improved the optical properties and enhanced the separation efficiency of photoexcited electron-hole pairs in the photocatalyst. The study also proposed a mechanism for solar photocatalytic processes based on experimental results.
Article
Polymer Science
Margaux Vigata, Cathal D. O'Connell, Silvia Cometta, Dietmar W. Hutmacher, Christoph Meinert, Nathalie Bock
Summary: Hydrogels are considered ideal for local drug delivery due to their tunability, with the newly developed GelMA-DDS showing excellent drug encapsulation efficiencies and tunable mechanical properties for the delivery of cefazolin against SSIs. The diffusive and proteolytic drug delivery of cefazolin showed burst release characteristics and dose-dependent efficacy against S. aureus, highlighting the potential of GelMA-DDS for the prophylaxis and treatment of SSIs.
Article
Chemistry, Physical
Xuhan Zhang, Chenyu Xu, Li Zhang, Zheng Li, Jianan Hong, Yanwei Zhang
Summary: Wasted high-temperature water can be used for photothermal catalytic water splitting reactions to produce solar fuel and provide high-temperature heat. Cu-modified TiO2 improves the photoresponse and promotes the water splitting reaction. Increasing temperature reduces the energy barrier and charge-transfer resistance, leading to increased hydrogen yield.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Environmental Sciences
Almudena Aguinaco, Beatriz Amaya, Milagrosa Ramirez-del-Solar
Summary: Fe3+-TiO2 thin films were successfully prepared using a sandwich approach, and their structural, morphological, optical, and photocatalytic properties were studied. The incorporation of Fe3+ altered the material properties to enhance photocatalytic activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Analytical
Klaudia Kaniewska, Jakub Nowakowski, Pawel Bacal, Marcin Karbarz
Summary: Thin hydrogel layers were deposited on conducting surfaces using an electrochemically induced free-radical polymerization method, with ionized carboxylic groups allowing for accumulation of Cu(II) cations. The presence of Cu(II) acted as an electroactive cross-linker, causing substantial shrinking of the layer, while electrochemical reduction to Cu(I) led to substantial swelling. Subsequent electrooxidation of Cu(I) reformed the crosslinking complexes, resulting in the observed shrinking of the layer. The electrochemically active hydrogel layer acted as a microactuator due to its fast action, high stability, and reversible shrinking/swelling transformation, monitored by electrochemical quartz crystal microbalance and electron microscopy.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
Yuchi Cui, Benjamin Derby, Nan Li, Amit Misra
Summary: The study investigates the fracture behavior of nanocomposite materials and finds that hierarchical structures exhibit crack growth resistance, leading to increased toughness. Electron microscopy characterization identifies three mechanisms of crack growth resistance in hierarchical structures: crack bridging, crack deflection, and multiple cracking.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Nurul Akmal Che Lah
Summary: Flexible and soft conductive thin films made of pure Cu and Cu-based oxide nanostructures benefit from the versatility of their individual materials and robustness of device design components. The use of curved elastomeric bilayers and responsive forces enables the integration of pure Cu and/or Cu-based oxide nanostructures channels for carrying alternating currents of compact integrated circuits. These complex multiphase thin film architectures provide empirical knowledge for understanding the physical-electro-chemical interactions characteristics of the oxide growth. This article summarizes the recent advances, challenges, and prospects of using pure Cu and Cu-based oxide nanostructures in both fundamental and applied tunable functionality applications of varying dimensionality. It also highlights the emerging critical issues and research improvement opportunities regarding the technical challenges.
SURFACES AND INTERFACES
(2023)
Article
Microbiology
Rochelle L. Ryan, Dwane Jackson, George Hopkins, Victoria Eley, Rebecca Christensen, Andre A. J. Van Zundert, Steven C. Wallis, Jeffrey Lipman, Suzanne L. Parker, Jason A. Roberts
Summary: This study describes the pharmacokinetics of cefazolin in plasma and interstitial fluid in patients undergoing bariatric surgery and determines the optimal dosing regimen. The results show that a prophylactic dose of 2g cefazolin achieves appropriate plasma and interstitial fluid concentrations in obese and morbidly obese patients.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
(2022)
Article
Engineering, Environmental
Yingying Li, Haidan Wang, Jiawen Xie, Jianhua Hou, Xianliang Song, Dionysios D. Dionysiou
Summary: A novel Ag-Bi2WO6-TiO2 ternary photocatalyst was synthesized and incorporated into starch films, showing excellent photocatalytic activity for ethylene degradation. The enhanced performance was attributed to the synergistic effect of Ag, TiO2, and Bi2WO6, leading to effective charge separation and suppressed carrier recombination.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Aida Rudakova, Alexei Emeline, Andrey Romanychev, Detlef W. Bahnemann
Summary: The photoinduced hydrophilic behavior of TiO2 thin film synthesized by atomic layer deposition method on p-Si wafer and SiO2-coated glass has been studied. The significant difference in hydrophobicity between the TiO2 film on SiO2-coated glass and the Si wafer is attributed to the formation of a type-II TiO2-Si heterostructure. The role of photoelectrons in the mechanism of light-induced hydrophilic conversion of the TiO2 surface was elucidated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)