Effect of growth temperature on the optical properties of ZnO nanostructures grown by simple hydrothermal method

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60365-60372 ◽  
Author(s):  
Rajasree Das ◽  
Amit Kumar ◽  
Yogendra Kumar ◽  
Somaditya Sen ◽  
Parasharam M. Shirage
Keyword(s):  
Optical Properties ◽  
Hydrothermal Method ◽  
Growth Temperature ◽  
Zno Nanostructures ◽  
Rapid Synthesis ◽  
Facile Hydrothermal Method ◽  
Simple Hydrothermal Method ◽  
Synthesis Technique ◽  
Nano Rods

Here we report an easy and rapid synthesis technique of wurtzite ZnO nanostructures in the form of flowers, nano-rods and nano-tubes that are achieved by a facile hydrothermal method.

Preparation and Optical Properties of TiO2 Film with a Nest-Like Structure by Three Times of Circulating Hydrothermal Method

NANO ◽  
2016 ◽  
Vol 11 (06) ◽  
pp. 1650066 ◽  
Author(s):  
Quangui He ◽  
Jia Zhuang ◽  
Qiuxiang Wen ◽  
Yang Deng ◽  
Jun Yu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hydrothermal Method ◽  
Three Dimensional ◽  
Dye Adsorption ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Facile Hydrothermal Method ◽  
Conductive Glass ◽  
Photoelectric Properties ◽  
Adsorption Amount

An anatase TiO2 photoanode with a novel three-dimensional nest-like structure was prepared directly on a transparent conductive glass substrate through hydrothermal cycles by three times. First, an unidirectional banded structure film was prepared by a facile hydrothermal method. And then, with the time of hydrothermal cycle increased, part of nanobelts were ruptured into a lot of small polyhedrons, but they still maintained a trend of the previous connection, and some fine nanobelts were interweaved in small polyhedrons. Finally, we successfully prepared a film with a novel 3D nest-like structure, and it had all the characteristics of the hierarchitectures. It had better photoelectric properties than the film with fewer times of hydrothermal cycle. Its photoelectric conversion efficiency reached 3.81%, which is due to a large dye adsorption amount, rapid electronic transmission, and superior light scattering and more electrons transmission paths.

Synthesis of Mg-doped hierarchical ZnO nanostructures via hydrothermal method and their optical properties

2016 ◽  
Vol 657 ◽  
pp. 261-267 ◽  
Author(s):  
Jun Yang ◽  
Yongqian Wang ◽  
Junhan Kong ◽  
Meihua Yu ◽  
Hongyun Jin
Keyword(s):  
Optical Properties ◽  
Hydrothermal Method ◽  
Zno Nanostructures ◽  
Mg Doped

Synthesis of novel morphologies of Li2FeSiO4/C micro/nano composites by a facile hydrothermal method

RSC Advances ◽  
2014 ◽  
Vol 4 (75) ◽  
pp. 39889-39893 ◽  
Author(s):  
Xiaolei Jiang ◽  
Huayun Xu ◽  
Jian Yang ◽  
Jing Liu ◽  
Hongzhi Mao ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Nano Composites ◽  
Facile Hydrothermal Method ◽  
Simple Hydrothermal Method

Carambola and jujube-seed-shaped Li2FeSiO4 assembled by nanoplates have been successfully synthesized by a simple hydrothermal method.

Study of ZnO Nanoparticles-Decorated TiO2 {001} Facets Heterostructures and their Photocatalytic Activity

2019 ◽  
Vol 298 ◽  
pp. 175-180
Author(s):  
Ke Yue Wu ◽  
Jing Biao Cui
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Zno Nanoparticles ◽  
Growth Temperature ◽  
Charge Recombination ◽  
Simple Hydrothermal Method ◽  
Size And Shape ◽  
Zno Nanocrystals ◽  
Photocatalytic Activities

ZnO decorated-TiO2 nanosheets with exposed {001} facets were achieved by a simple hydrothermal method. The size and shape of ZnO nanoparticles were controlled by tuning the growth temperature. SEM, HRTEM, and SAED measurements confirmed the formation of {001} TiO2 nanosheets with the decoration of ZnO nanoparticles. The ZnO/TiO2 {001} facets heterostructures show an improved efficient in photocatalytic activities due to the decreased charge recombination with the presence of ZnO nanocrystals.

Rapid synthesis and photoluminescence properties of Eu-doped ZnO nanoneedles via facile hydrothermal method

2014 ◽  
Vol 30 (4) ◽  
pp. 538-542 ◽  
Author(s):  
Jihui Lang ◽  
Jiaying Wang ◽  
Qi Zhang ◽  
Songsong Xu ◽  
Qiang Han ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Photoluminescence Properties ◽  
Rapid Synthesis ◽  
Facile Hydrothermal Method ◽  
Doped Zno

scholarly journals Enhanced Photocatalytic Activity of BiOBr/ZnO Heterojunction Semiconductors Prepared by Facile Hydrothermal Method

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Xiangchao Meng ◽  
Lingyun Jiang ◽  
Weiwen Wang ◽  
Zisheng Zhang
Keyword(s):  
Optical Properties ◽  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Enhancement Effect ◽  
Facile Hydrothermal Method ◽  
Sem Images ◽  
Xrd Patterns

Hexagonal wurtzite pure ZnO and BiOBr-ZnO composites were synthesized by facile hydrothermal method. The amount of BiOBr as dopant was adjusted from 5 wt.% to 75 wt.%, and correspondingly the morphologies and crystal structures of the as-prepared composites were measured and discussed. Specifically, according to XRD patterns and SEM images, the main crystalline structure of ZnO was not destroyed after doping, but growth of ZnO crystals was inhibited by doping BiOBr. Meanwhile, the optical properties of the composites were measured by the diffuse reflectance spectra (DRS). The band gap of composites was also calculated using the classical Tauc equation and it was found to be around 3.0 eV. In the test of photocatalytic activation, the ZnO-BiOBr photocatalysts exhibited high photocatalytic efficiencies in the degradation ofRhodamine B(RhB) under visible-light irradiation. It was ascribed to not only the small size of crystalline, but also the reduction in the recombination rate of the photogenerated carriers for the enhancement effect of p-n heterojunction. This work sheds light on improving the photocatalytic performance by establishing the heterojunction and contributes to the development of a commercially competitive photocatalyst.

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