Photocatalytic behaviors of porous ZnO hierarchical structures fabricated via a precursor-pyrolyzing route

Yanhua Tong; Feng Cao; Peisong Tang; Haifeng Chen; Paul K. Chu

doi:10.1007/s10854-012-0872-9

Photocatalytic behaviors of porous ZnO hierarchical structures fabricated via a precursor-pyrolyzing route

Yanhua Tong
, Feng Cao
, Peisong Tang
, Haifeng Chen
, Paul K. Chu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

6 Citations (Scopus)

Abstract

It is of significance to develop porous ZnO photocatalysts with high activity. In this paper, three kinds of hierarchical ZnO porous structures were fabricated by a precursor transformation of hierarchical Zn₅(CO ₃)₂(OH)₆ structures synthesized in the zinc salts and urea aqueous solution. The microstructure characterization demonstrates that the obtained ZnO materials are porous structure and quasi-single-crystal nature. The solid UV-vis and PL spectra indicate that the porous ZnO with different morphologies have similar photoabsorption ability but different ratioes of green-to-UV emission, respectively. These porous ZnO samples with different structures exhibit different photocatalytic efficiency. More importantly, the photocatalytic activity of porous ZnO fabricated by the precursor-pyrolyzing method is inversely proportional to the content of surface defects under other influence factors comparable. This result inconsistent with references was also discussed. © 2012 Springer Science+Business Media, LLC.

Original language	English
Pages (from-to)	89-95
Journal	Journal of Materials Science: Materials in Electronics
Volume	24
Issue number	1
DOIs	https://doi.org/10.1007/s10854-012-0872-9
Publication status	Published - Jan 2013

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title = "Photocatalytic behaviors of porous ZnO hierarchical structures fabricated via a precursor-pyrolyzing route",

abstract = "It is of significance to develop porous ZnO photocatalysts with high activity. In this paper, three kinds of hierarchical ZnO porous structures were fabricated by a precursor transformation of hierarchical Zn5(CO 3)2(OH)6 structures synthesized in the zinc salts and urea aqueous solution. The microstructure characterization demonstrates that the obtained ZnO materials are porous structure and quasi-single-crystal nature. The solid UV-vis and PL spectra indicate that the porous ZnO with different morphologies have similar photoabsorption ability but different ratioes of green-to-UV emission, respectively. These porous ZnO samples with different structures exhibit different photocatalytic efficiency. More importantly, the photocatalytic activity of porous ZnO fabricated by the precursor-pyrolyzing method is inversely proportional to the content of surface defects under other influence factors comparable. This result inconsistent with references was also discussed. {\textcopyright} 2012 Springer Science+Business Media, LLC.",

author = "Yanhua Tong and Feng Cao and Peisong Tang and Haifeng Chen and Chu, \{Paul K.\}",

year = "2013",

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doi = "10.1007/s10854-012-0872-9",

language = "English",

volume = "24",

pages = "89--95",

journal = "Journal of Materials Science: Materials in Electronics",

issn = "0957-4522",

publisher = "Springer New York",

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TY - JOUR

T1 - Photocatalytic behaviors of porous ZnO hierarchical structures fabricated via a precursor-pyrolyzing route

AU - Tong, Yanhua

AU - Cao, Feng

AU - Tang, Peisong

AU - Chen, Haifeng

AU - Chu, Paul K.

PY - 2013/1

Y1 - 2013/1

N2 - It is of significance to develop porous ZnO photocatalysts with high activity. In this paper, three kinds of hierarchical ZnO porous structures were fabricated by a precursor transformation of hierarchical Zn5(CO 3)2(OH)6 structures synthesized in the zinc salts and urea aqueous solution. The microstructure characterization demonstrates that the obtained ZnO materials are porous structure and quasi-single-crystal nature. The solid UV-vis and PL spectra indicate that the porous ZnO with different morphologies have similar photoabsorption ability but different ratioes of green-to-UV emission, respectively. These porous ZnO samples with different structures exhibit different photocatalytic efficiency. More importantly, the photocatalytic activity of porous ZnO fabricated by the precursor-pyrolyzing method is inversely proportional to the content of surface defects under other influence factors comparable. This result inconsistent with references was also discussed. © 2012 Springer Science+Business Media, LLC.

AB - It is of significance to develop porous ZnO photocatalysts with high activity. In this paper, three kinds of hierarchical ZnO porous structures were fabricated by a precursor transformation of hierarchical Zn5(CO 3)2(OH)6 structures synthesized in the zinc salts and urea aqueous solution. The microstructure characterization demonstrates that the obtained ZnO materials are porous structure and quasi-single-crystal nature. The solid UV-vis and PL spectra indicate that the porous ZnO with different morphologies have similar photoabsorption ability but different ratioes of green-to-UV emission, respectively. These porous ZnO samples with different structures exhibit different photocatalytic efficiency. More importantly, the photocatalytic activity of porous ZnO fabricated by the precursor-pyrolyzing method is inversely proportional to the content of surface defects under other influence factors comparable. This result inconsistent with references was also discussed. © 2012 Springer Science+Business Media, LLC.

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84871984233&origin=recordpage

U2 - 10.1007/s10854-012-0872-9

DO - 10.1007/s10854-012-0872-9

M3 - RGC 21 - Publication in refereed journal

SN - 0957-4522

VL - 24

SP - 89

EP - 95

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 1

ER -

Photocatalytic behaviors of porous ZnO hierarchical structures fabricated via a precursor-pyrolyzing route

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