Controllable synthesis of hierarchical ZnO nanodisks for highly photocatalytic activity

Zhai, Teng; Xie, Shilei; Zhao, Yufeng; Sun, Xiaofeng; Lu, Xihong; Yu, Minghao; Xu, Mengfan; Xiao, Fang; Tong, Yexiang

doi:10.1039/c1ce06013a

Cited by 78 publications

(46 citation statements)

References 38 publications

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“…Preferred growth direction is hindered in the case of strongly polar solvents/molecules since they interact with the polar surfaces and hinder the direct growth on nonpolar planes. Being a polar, basic, aprotic solvent, DMSO is also responsible for the anisotropic growth of ZnO structures (Lu et al 2009;Zhai et al 2012). A mass of DMSO is most likely absorbed on to the polar basal plane of ZnO inhibiting the absorption of additional growth units on (0001) plane.…”

Section: Crystallizationmentioning

confidence: 99%

Hydrothermal–electrochemical growth of heterogeneous ZnO: Co films

Yilmaz

Ünal

2017

Appl Nanosci

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This study demonstrates the preparation of heterogeneous ZnO: Co nanostructures via hydrothermalelectrochemical deposition at 130°C and -1.1 V (vs Ag/ AgCl (satd)) in dimethyl sulfoxide (DMSO)-H 2 O mixture. Under the stated conditions, ZnO: Co nanostructures grow preferentially along (002) direction. Strength of directional growth progressively increases with the increasing concentration of Co(II) in the deposition bath. Films are composed of hexagonal Wurtzite ZnO, metallic cobalt, and mixed cobalt oxide on the surface and cobalt(II) oxide in deeper levels. Increasing the Co(II) concentration in the deposition bath results in different morphological features as well as phase separation. Platelets, sponge-like structures, cobalt-rich spheres, microislands of cobalt-rich spheres which are interconnected by ZnO network can be synthesized by adjusting [Co(II)]: [Zn(II)] ratio. Growth mechanisms giving rise to these particular structures, surface morphology, crystal structure, phase purity, chemical binding characteristics, and optical properties of the deposits are discussed in detail.

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Section: Crystallizationmentioning

confidence: 99%

Hydrothermal–electrochemical growth of heterogeneous ZnO: Co films

Yilmaz

Ünal

2017

Appl Nanosci

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“…In order to improve the physical and chemical properties of ZnO and enhance the photocatalytic activity of ZnO, much research effort has been focused on the control of materials' morphology. Various nanostructured ZnO nanomaterials, such as nanowire, nanorods, nanotubes, and nanodisks, have been synthesized (44,(53)(54)(55)(56). ZnO nanowires for photocatalytic application were synthesized by a modified carbothermal reduction method at 1150°C (44).…”

Section: Metal Oxide and Metal Sulfide Photocatalystsmentioning

confidence: 99%

“…Highly vertically-aligned, hexagonal ZnO nanotube arrays with6 50 nm in diameter were obtained. In addition, the synthesis of ZnO nanorods and nanodisks by a sol-gel method has been reported (55,56). To obtain ZnO nanorods, NaOH, zinc acetate, manganese acetate, and sodium dodecyl sulfate were used.…”

mentioning

confidence: 99%

Chapter Green Nanotechnology: Development of Nanomaterials for Environmental and Energy Applications

Fagan

Cui

Andersen

et al. 2013

ACS Symposium Series

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This book chapter discusses the syntheses of various nanomaterials, for green nanotechnology applications in detail. Special attention is given to the development of emerging areas, such as environmental as well as energy materials. Various approaches for preparing nanostructured photocatalysts, such as titanium dioxide, zinc oxide, iron oxide, and metal sulfides, different conventional methods and novel methods, including

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“…nanorod [15], nanowire [16], nanotube [17], nanosheet [18] and nanodisk [19] has been reported for various applications. ZnO nanosheets are suggested to be ideal components of nanodevices used in energy conversion and storage, memory devices, gas sensing and optoelectronic devices due to their high surface-to-volume ratio and interesting optical, electronic and photocatalytic properties [20,21].…”

Section: Introductionmentioning

confidence: 99%