Journal ArticleDOI
Three-dimensional type II ZnO/ZnSe heterostructures and their visible light photocatalytic activities.
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TLDR
The morphologies and exposed crystal faces of pure ZnO building blocks prior to surface modification had a significant effect on the visible light photocatalytic processes of ZnNO/ZnSe heterostructures after surface modification.Abstract:
We report a method for synthesizing three distinct type II 3D ZnO/ZnSe heterostructures through simple solution-based surface modification reactions in which polycrystalline ZnSe nanoparticles formed on the surfaces of single-crystalline ZnO building blocks of 3D superstructures. The experimental results suggested a possible formation mechanism for these heterostructures. The formation of the ZnO/ZnSe heterostructures was assumed to result from a dissolution–recrystallization mechanism. The optical properties of the 3D ZnO/ZnSe heterostructures were probed by UV–vis diffuse reflectance spectroscopy. The 3D ZnO/ZnSe heterostructures exhibited absorption in the visible spectral region. The visible photocatalytic activities of 3D ZnO/ZnSe heterostructures were much higher than those of the 3D pure ZnO structures. The activities of the 3D ZnO/ZnSe heterostructures varied according to the structures under visible light. The morphologies and exposed crystal faces of pure ZnO building blocks prior to surface mod...read more
Citations
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Visible light driven type II heterostructures and their enhanced photocatalysis properties: a review
TL;DR: The application of type II heterostructured semiconductors in the area of environmental remediation and water splitting is traced, major fabrication methods are summarized, some of the progress and resulting achievements are described, and the future prospects are discussed.
Journal ArticleDOI
Review on the improvement of the photocatalytic and antibacterial activities of ZnO
TL;DR: In this paper, a review of the application of photocatalytic degradation and the antibacterial properties of zinc oxide (ZnO) nanomaterials is reviewed, and the main methods that improve antibacterial activities are coating inorganic or organic antimicrobial agents, doping ZnO, and tuning the size, morphological characteristics, and concentration of ZnOs.
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Perspective and status of polymeric graphitic carbon nitride based Z-scheme photocatalytic systems for sustainable photocatalytic water purification
Abhinandan Kumar,Pankaj Raizada,Pardeep Singh,Reena V. Saini,Adesh K. Saini,Ahmad Hosseini-Bandegharaei +5 more
TL;DR: In this article, an in-depth overview comprising traditional photocatalysis along with Z-scheme photocatalytic systems have been exploited and discussed with respect to their facile synthesis techniques and application in environmental restoration.
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Self-assembled CdS/Au/ZnO heterostructure induced by surface polar charges for efficient photocatalytic hydrogen evolution
TL;DR: In this article, a ternary structure of CdS/Au/ZnO, where a core-shell structure of Au/CdS is selectively deposited on the polar surface of ZnO induced by the surface polar charges of ZNO crystals, is prepared through a two-step self-assembly process.
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Synthesis of ZnO/CdS hierarchical heterostructure with enhanced photocatalytic efficiency under nature sunlight
TL;DR: In this paper, a hierarchical ZnO composed of ultrathin nanosheets as secondary structures was fabricated through a hydrothermal method, and hexagonal wurtzite CdS with diameter between 50-100 nm were incorporated on the wurtzinite ZnOs sheets with the assistance of ultrasonic irradiation.
References
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Journal ArticleDOI
Environmental Applications of Semiconductor Photocatalysis
TL;DR: The slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses as discussed by the authors, which is a serious problem.
Journal ArticleDOI
Room-temperature ultraviolet nanowire nanolasers
Michael H. Huang,Samuel S. Mao,Henning Feick,Haoquan Yan,Yiying Wu,Hannes Kind,Eicke R. Weber,Richard E. Russo,Peidong Yang,Peidong Yang +9 more
TL;DR: Room-temperature ultraviolet lasing in semiconductor nanowire arrays has been demonstrated and self-organized, <0001> oriented zinc oxide nanowires grown on sapphire substrates were synthesized with a simple vapor transport and condensation process.
Journal ArticleDOI
One‐Dimensional Nanostructures: Synthesis, Characterization, and Applications
Younan Xia,Peidong Yang,Yugang Sun,Yiying Wu,Brian Mayers,Byron D. Gates,Yadong Yin,Franklin Kim,Haoquan Yan +8 more
TL;DR: A comprehensive review of 1D nanostructures can be found in this article, where the authors provide a comprehensive overview of current research activities that concentrate on one-dimensional (1D) nanostructure (wires, rods, belts and tubes).
Journal ArticleDOI
Quantum dot bioconjugates for imaging, labelling and sensing
TL;DR: This review looks at current methods for preparing QD bioconjugates as well as presenting an overview of applications, and concludes that the potential of QDs in biology has just begun to be realized and new avenues will arise as the ability to manipulate these materials improves.
Journal ArticleDOI
Zinc oxide nanostructures: growth, properties and applications
TL;DR: In this paper, a review of various nanostructures of ZnO grown by the solid-vapour phase technique and their corresponding growth mechanisms is presented. And the application of nanobelts as nanosensors, nanocantilevers, field effect transistors and nanoresonators is demonstrated.
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