Article
Materials Science, Ceramics
Aya El-Shafey, Reham Shams El Din, Sarah H. Abdelazim, Nahla Mamdouh, Dina Salah, S. I. El-Dek, A. H. Zaki
Summary: ZnO nanoparticles with different morphologies were prepared using the biotemplate method, and their microstructure was found to strongly depend on the type of biotemplate used. Nanoparticles and platelet-like structures with high crystallinity were obtained, with ZnO nanoparticles prepared using turmeric powder showing high catalytic activity for the removal of methyl orange dye.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Jimmy Castillo, Michelina Arcuri, Vicmary Vargas, Vincent Piscitelli
Summary: In this study, two methodologies were used to prepare nano compounds derived from a mixture of metal oxides supported in biogenic silica nanoparticles. The composition and optical properties of the samples were characterized, and the effect of metal oxide confinement within the nanoparticle structure was studied.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Shenglan Liao, Liqin Lin, Jiale Huang, Xiaolian Jing, Shiping Chen, Qingbiao Li
Summary: In this study, hollow SiO2 microspheres were synthesized using biological templates and TiO2-SiO2 microspheres were prepared through the hydrothermal process. The structures and physicochemical properties of TiO2-SiO2 photocatalysts were characterized, and their photocatalytic activity towards methyl orange degradation was evaluated.
Article
Chemistry, Multidisciplinary
Hui Zhou, Jun Cai, Bo Gu, Deyuan Zhang, De Gong
Summary: In this study, a novel strategy is developed to fabricate biohybrid urchin-like magnetic ZnO microspheres with tunable hierarchical structures, based on Chlorella as a template. The biohybrid microspheres show excellent light absorption and photoelectrocatalysis performance, which is attributed to the well-oriented ZnO nanorod arrays, heterojunction structures, and biomass features. This work provides opportunities for constructing biohybrid multilevel micro/nanostructures with significant potentials for practical applications.
Article
Nanoscience & Nanotechnology
Tian-Ci Shao, Cheng Li, Ming-Song Lv, Xian-Fa Zhang, Zhao-Peng Deng, Ying-Ming Xu, Li-Hua Huo, Shan Gao
Summary: The development of a portable and conductometric sensor for detecting flammable and explosive high-energy n-pentanol vapor is of great practical significance. The biomorphic ZnO nanotubes synthesized using a poplar branch as a biotemplate show high sensitivity, fast response, low detection limit, and a wide linear relationship, making them a promising candidate for accurate detection of trace amounts of n-pentanol.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
K. H. Mahmoud, Khaled A. Elsayed, E. A. Abdel Wahab, Farid M. Abdel-Rahim, Kh S. Shaaban
Summary: The preparation, structure, and properties of pentaglasses with different compositions were studied, and their mechanical characteristics were evaluated. The radiation shielding efficiency of these glasses was investigated using different programs, revealing an abnormal relationship between attenuation, structure, and density.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
M. Shevchenko, E. Jak
Summary: The phase equilibria of ZnO-SiO2, Al2O3-SiO2, and ZnO-Al2O3-SiO2 systems at liquidus temperature in air were characterized, with special attention given to the two different compositions of zincite phase. Various experimental techniques were used to accurately measure the concentrations of Zn, Al, Si, and Ca in different phases. The findings contribute to the development of thermodynamic models for the system.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Cheng Li, Yuan-Yuan Sun, Ya-Nan Li, Xian-Fa Zhang, Zhao-Peng Deng, Li-Hua Huo, Ying-Ming Xu, Shan Gao
Summary: In this article, a low-cost ZnO biomorphic material was developed for the high-sensitivity detection of trace NO2 at low temperatures. The material was prepared by calcining a Zn(NO3)2 solution soaked waste chestnut mesocarp biotemplate at 600 degrees C in air, resulting in a one-dimensional tubular structure assembled from uniform nanoparticles. This ZnO material showed improved sensing performance towards NO2 due to its convenient gas diffusion channel, increased surface active sites, and enhanced adsorption and chemical reactions.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Ming -Song Lv, Ya-Nan Li, Guo-Li Chen, Rui Gao, Xian-Fa Zhang, Zhao-Peng Deng, Ying-Ming Xu, Li-Hua Huo, Shan Gao
Summary: The development of conductometric sensors for high sensing and selective detection of very toxic and explosive hydrazine gas remains an urgent challenge. In this study, waste and reproducible willow catkins were used as bio-template to fabricate three biomorphic NiO/ZnO hetero-tubes through a simple method. The 6.1 wt% NiO/ZnO composite exhibited high sensitivity and rapid detection of trace N2H4.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Electrical & Electronic
Jia-Cheng Jian, Yu-Chi Chang, Deng-Kai Chang, Sheng-Po Chang, Shoou-Jinn Chang
Summary: In this study, spherical-like ZnO UV photodetectors were synthesized using a facile hydrothermal method in the presence of different concentrations of apple pectin as a biotemplate. The addition of apple pectin not only modified the surface morphology but also improved the absorption properties and reduced the dark current. The best performance was achieved with the addition of 150 mg of apple pectin, exhibiting a high UV-to-dark current ratio and fast response and recovery times.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Materials Science, Ceramics
M. M. Mikhailov, S. A. Yuryev, A. N. Lapin, V. A. Goronchko
Summary: Studies were conducted on the optical properties and radiation resistance of thermal control coatings for spacecraft. The coatings were based on zinc oxide pigments and lithium silicate binder, both unmodified and modified by SiO2 nanoparticles. The results showed that the nanoparticle-modified coatings had higher resistance to electron irradiation compared to other coatings, in terms of diffuse reflectance spectra and solar absorptance (alpha(s)). The radiation resistance of the modified coatings was significantly higher when exposed to an electron spectrum in a geostationary orbit, with a difference Delta alpha(s) of 1.54, 1.74, 1.88, and 1.95 for 5, 10, 15, and 20 years of electron irradiation, respectively.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Yifan Zhao, Meng Zhao, Bian Tian, Zhuangde Jiang, Yuheng Wang, Ming Liu, Ziyao Zhou
Summary: Researchers have developed a new method of manipulating spin states using photovoltaic control of magnetism, where the introduction of a ZnO layer plays a crucial role in optimizing magnetic manipulation under sunlight illumination. This innovative approach opens up possibilities for future developments in photovoltaic spintronics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Lei Yang, Ruijiang Ding, Wencai Zhu, Chunshui Hong, Luoyi Wu
Summary: In ZnO:Tb nanoparticles, lattice expansion and contraction occur with proper Tb doping, leading to the entry of Tb3+ element into the ZnO lattice and generation of crystal defects. Both VO and Zni are involved in the energy transfer process, enhancing the luminescence intensity of Tb3+ and promoting strong green luminescence.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Physics, Applied
S. Sawada, K. Okai, H. Fukui, R. Takahashi, N. Ishimatsu, H. Maruyama, N. Kawamura, S. Kawaguchi, N. Hirao, T. Seki, K. Takanashi, S. Ohmura, H. Wadati
Summary: We investigated the relationship between lattice constant and magnetism of L1(0)-ordered FePt under high pressure using first-principles calculations and synchrotron x-ray measurements. Our calculations showed a local maximum of the c/a ratio at around 20 GPa, and the Pt magnetic moment remained almost unchanged until around 60 GPa before sharply decreasing. Experimentally, we verified the local maximum of c/a at around 20 GPa through powder x-ray diffraction and observed no significant change in Pt magnetic moment up to around 20 GPa using x-ray magnetic circular dichroism at the Pt L edge.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Ceramics
Mohammed Ezzeldin, Laila M. Al-Harbi, M. S. Sadeq, Abd El-razek Mahmoud, M. A. Muhammad, H. A. Ahmed
Summary: CdO-PbO-B2O3-SiO2-ZnO glasses with different compositions were prepared and their structural, optical, elastic, and radiation shielding properties were investigated. The addition of CdO resulted in slight changes in the internal structural units and significant changes in the optical, elastic, and radiation shielding properties of the glasses. These changes were attributed to the replacement of PbO by CdO, and it was found that the glass samples exhibited better radiation shielding ability than standard materials.
CERAMICS INTERNATIONAL
(2023)
