Article
Materials Science, Multidisciplinary
S. Zarei, M. Hasheminiasari, S. M. Masoudpanah, J. Javadpour
Summary: ZnO-xSnO(2) composite films were prepared by sol-gel spin coating process and characterized. The films showed distinct microstructure with ZnO pyramids on SnO2 nanoparticles. The ZnO-25 mol% SnO2 film exhibited higher photocatalytic degradation of methylene blue dye compared to pristine ZnO and SnO2 films.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Mohamed Belghiti, Lekbira El Mersly, El Mountassir El Mouchtari, Salah Rafqah, Khalid Ouzaouit, Hakim Faqir, Intissar Benzakour, Amane Oueriagli, Abdelkader Outzourhit
Summary: The objective of this study was to investigate the effect of ZnO powder partially coated with a nanometric layer of Y2O3 on the treatment of water contaminated with organic pollutants. The results showed that the partial coating with Y2O3 enhances the photocatalytic activity of ZnO, with almost complete degradation of the sulfamethazine antibiotic under different pH conditions.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Engineering, Environmental
Gemechu Fikadu Aaga, Workineh Mengesha Fereja, Dejene Negese Tolcha, Abraham Alemayehu Labena
Summary: In this study, ZnO NPs and ZnO/BT nanocomposites were successfully synthesized using an aqueous leaf extract of Croton macrostachyus. The nanomaterials were characterized and showed promising properties for photocatalytic degradation of dyes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Ceramics
V Deepthi, Anju Sebastian, B. Vidhya
Summary: Sol-gel spin coating method was used to prepare ZnO and ZnO:GO composite films, and the effect of GO incorporation on film morphology and photocatalytic activity was investigated. The results showed that GO was evenly dispersed on the film surface, and the incorporation of GO improved the effectiveness of dye removal.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Limei Xue, Ermiao Liang, Jiwen Wang
Summary: The magnetic recoverable ZnO/ZnFe2O4/diatomite (ZZFDT) composite was synthesized by hydrothermal-precipitation method. The ZZFDT-1 exhibited excellent photocatalytic activity and magnetic properties, and can be easily separated from the solution. Additionally, ZZFDT-1 has a specific mesoporous structure and visible light response.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Hamed Beigli, Mahdi Shaddoust, Mohammad Hadi Ahmadi, Abbas Bagheri Khatibani
Summary: In this study, undoped zinc oxide and cobalt-doped thin films were prepared using a sol-gel dip-coating technique, and the effects of gamma irradiation on the structural, morphological, and optical properties of the samples were investigated. The results showed significant changes in various physical properties, especially in optical and sensing characteristics, under low and relatively long-term gamma irradiation.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Jannat Hammouche, Kais Daoudi, Soumya Columbus, Rania Ziad, Krithikadevi Ramachandran, Mounir Gaidi
Summary: The study investigated the photocatalytic degradation of organic dyes using nickel doped zinc oxide decorated silicon nanowires, showing that nickel doping slightly enhances the degradation efficiency. The developed structure stands as promising candidates as efficient, cost-effective and reusable photocatalytic systems.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Elie A. Daher, Bassam Riachi, Jean Chamoun, Christel Laberty-Robert, Wael Hamd
Summary: A new template-free, porous, and wrinkled ZnO thin films were created to enhance the photocatalytic degradation of organic pollutants in water. The formation of such nanostructure was driven by intrinsic stress and was tracked using in situ thermo-ellipsometry technique. The engineered nanostructure exhibited a wrinkled structure with a porosity of 22-25% and an average pore size of 24 nm, promoting the adsorption of pollutants. The ZnO films showed high photocatalytic activity with a removal efficiency above 92% and degradation rate constants of 0.0049 min-1 and 0.0121 min-1 under UVA and visible light, respectively.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Sonu Kumar, R. D. Kaushik, L. P. Purohit
Summary: In this study, hetero-nanostructured Se-ZnO nanocomposites incorporated with different weight percentages of RGO were successfully used for enhanced photocatalytic degradation and complete mineralization of phenolic compounds and organic dyes. The optimized nanocomposite structure and optical properties effectively hindered charge carrier recombination, leading to the production of additional reactive oxygen species for efficient degradation of organic pollutants in water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Dibya Ranjan Rout, Shivam Chaurasia, Hara Mohan Jena
Summary: This study investigated the photocatalytic degradation of malachite green dye using a novel manganese oxide doped graphene oxide/zinc oxide ternary composite under sunlight irradiation. The composite demonstrated enhanced degradation efficiency within 30 minutes due to increased pollutant adsorption and reduced bandgap energy. The main oxidizing radicals responsible for the degradation were identified and the composite exhibited stability and reproducibility.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Coatings & Films
Muhammad R. Islam, Muhammad G. Azam
Summary: Undoped ZnO and Mg-doped ZnO thin films were synthesized by sol-gel dip-coating technique. The study showed that Mg doping increased the porosity of the films, decreased their crystallinity, and led to the formation of localized energy states. The enhanced photocatalytic efficiency of Mg-doped ZnO thin films was attributed to charge trapping by localized states and an increase in surface area due to porosity induced by Mg doping.
SURFACE ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Boxu Xu, Chao Song, Jie Song, Rui Huang, Zhenxu Lin, Yi Zhang, Shaomin Lin, Yanqing Guo, Guangxu Chen, Jun Song
Summary: In this study, well-crystallized Yb3+/Er3+/Tm3+-tridoped Y2O3-ZnO ceramic nano-phosphors were prepared and their structures and emission properties were studied. It was found that increasing luminescent centers, weakening lattice symmetry, and releasing dormant rare earth ions can enhance the emission.
Article
Chemistry, Physical
Hao Sun, Seul-Yi Lee, Soo-Jin Park
Summary: Photocatalytic technology is a promising alternative for water treatments, but its practical application is limited by low efficiency and selectivity. In this study, two-dimensional zinc oxide nanosheets decorated with copper-palladium bimetallic nanoparticles were synthesized for the degradation of organic dyes in water. The prepared composites showed superior photocatalytic performance compared to pristine ZnO nanosheets under visible-light irradiation, attributed to enhanced separation and transfer efficiency of charge carriers. The highest catalytic efficiency was achieved by CuPd/ZnO nanocomposite with 0.5 wt% CuPd, achieving 95.3% removal of methyl orange within 45 minutes. This study provides a new avenue for the design and fabrication of high-performance photocatalysts for water treatments.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Mao Tang, Shiji Lu, Lili He, Xiaodong Zhu, Wei Feng, Wanming Zhang
Summary: This study synthesized pure ZnO and ZnTiO3/ZnO composite photocatalysts using zinc acetate and butyl titanate, and found that the ZnTiO3/ZnO composite with a Ti/Zn molar ratio of 0.2 exhibited the highest photocatalytic activity. Exceeding this ratio decreased the photocatalytic performance of the composites.
Article
Materials Science, Multidisciplinary
Thi Thuy Dao, Thi Le Na Vo, Anh Tuan Duong, Dang Thanh Tran, Dinh Lam Nguyen, Van Vinh Pham, Raja Das, Huu Tuan Nguyen
Summary: ZnO nanoflakes were synthesized via the sol-gel method with a precursor solution pH of 13. The synthesized ZnO nanoflakes exhibited high crystallinity and had an optical band gap of 3.27 eV. They showed remarkable photocatalytic efficiency in the degradation of organic dyes under UV irradiation, with the highest efficiency observed for congo red (CR) at a pH of 4 for 10 min.
