Role of annealing temperature on the formation of aligned zinc oxide nanorod arrays for efficient photocatalysts and photodetectors

Chia Yun Chen, Yu Rui Liu, Sung Sheng Lin, Li Jen Hsu, Sung Lin Tsai

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

Aligned ZnO nanorod arrays with well-controlled surface roughness were synthesized using a seed-assisted hydrothermal method, supported by investigations of the impact of annealing treatments on seed formation. Results indicated that the diameters, lengths, and axial alignments of the formed ZnO nanorod arrays essentially depended on annealing temperatures, and that the transition from random orientation toward aligned morphology could be effectively adjusted through thermal treatment of the seed layers. Both photocatalytic and photodetection properties in relation to annealing treatments were studied. The aligned ZnO nanorods with rough surfaces prepared at 300 °C annealing possessed superior photodegradation efficiency and the involved kinetics was satisfactorily interpretable on the basis of a second-order kinetic model. Upon integration with a patterned electrode, these ZnO-nanorod-based devices emerged as efficient UV photodetectors showing both drastic increments and adequate wavelength selectivity for generated photocurrents. These results could be potentially used for practical and cost-effective photochemical and photodetecting applications.

原文English
頁(從 - 到)2197-2203
頁數7
期刊Science of Advanced Materials
8
發行號12
DOIs
出版狀態Published - 2016

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)

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