Journal ArticleDOI
Formation and photocatalytic application of ZnO nanotubes using aqueous solution.
TLDR
The morphology of the products was found to be sensitive to the pH values and chemical bath temperatures, and the highest photocatalytic efficiency was observed at pH = 5.82.Abstract:
Vertically aligned ZnO nanotubes were prepared by etching ZnO rod arrays in aqueous solution, which were previously developed by chemical bath deposition method. The morphological, structural, photoluminescence, as well as photocatalytic properties of the ZnO nanotubes were examined with respect to the pH values of chemical bath solution. The morphology of the products was found to be sensitive to the pH values and chemical bath temperatures. The nanotubes synthesized at a low pH value (5.82) exhibited a strong UV emission and a weak defect-related visible emission. The highest photocatalytic efficiency was also observed at pH = 5.82. The possible mechanism for the difference of photocatalytic efficiency was discussed.read more
Citations
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One-Dimensional Metal-Oxide Nanostructures: Recent Developments in Synthesis, Characterization, and Applications
TL;DR: A comprehensive review of recent developments in novel synthesis, exceptional characteristics, and prominent applications of one-dimensional nanostructures of tungsten oxides, molybdenum oxide, tantalum oxides and tin oxides is provided in this article.
Journal ArticleDOI
Photocorrosion Inhibition of Semiconductor-Based Photocatalysts: Basic Principle, Current Development, and Future Perspective
TL;DR: In this paper, a review of the photocorrosion mechanisms of typical semiconductors and different characterization methods proposed for monitoring the photorecorrosion process of semiconductor-based composite photocatalysts are elaborated.
Journal ArticleDOI
Influence of Defects on the Photocatalytic Activity of ZnO
Daimei Chen,Zhihong Wang,Zhihong Wang,Zhihong Wang,Tie-Zhen Ren,Hao Ding,Wenqing Yao,Ruilong Zong,Yongfa Zhu +8 more
TL;DR: The influence of defects on the photoactivity of ZnO has been revealed in this paper, where the defect can be formed via ball-milling treatment, and part of the defects can be repaired via annealing treatment.
Journal ArticleDOI
Enhanced photocatalytic activity of Co doped ZnO nanodisks and nanorods prepared by a facile wet chemical method
TL;DR: The results showed that Co doped ZnO nanodisks and nanorods exhibit highly enhanced photocatalytic activity, as compared to pure Zn O nanod risks and nanors, due to the combined effects of enhanced surface area and improved charge separation efficiency due to optimal Co doping.
Journal ArticleDOI
Novel hollow Pt-ZnO nanocomposite microspheres with hierarchical structure and enhanced photocatalytic activity and stability
TL;DR: The remarkable photocatalytic performance of hollow Pt-ZnO microspheres mainly originated from their unique nanostructures and the low recombination rate of the e(-)/h(+) pairs by the platinum nanoparticles embedded in ZnO nanocrystals.
References
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Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
Journal ArticleDOI
Solar photocatalytic degradation of azo dye: comparison of photocatalytic efficiency of ZnO and TiO2
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TL;DR: In this article, the photocatalytic activity of commercial ZnO powder has been investigated and compared with that of Degussa P25 TiO2 in terms of surface area, particle size and crystallinity.
Journal ArticleDOI
Mesoporous titania spheres with tunable chamber stucture and enhanced photocatalytic activity.
TL;DR: This work provided novel structural platforms for novel materials and device applications and the unique sphere-in-sphere chamber structure allows multiple reflections of UV light resulting in greatly enhanced photocatalytic activity.
Journal ArticleDOI
Three-dimensional array of highly oriented crystalline ZnO microtubes
TL;DR: The ability to generate homogeneous particulate thin films of highly oriented and highly porous microparticles of a post transition metal oxide by a template-free, aqueous low-temperature coating process is demonstrated in this paper.
Journal ArticleDOI
Understanding the factors that govern the deposition and morphology of thin films of ZnO from aqueous solution
TL;DR: In this paper, the influence of the choice of complexing ligand, zinc counter-ion, pH, ionic strength, supersaturation, deposition time and substrate on the nature of ZnO films grown from chemical baths (CBD) are discussed.