High-performance photoluminescence-based oxygen sensing with Pr-modified ZnO nanofibers

Tingting Jiang; Baosheng Du; Hong Zhang; Dengfeng Yu; Lei Sun; Gongyuan Zhao; Chenhui Yang; Ye Sun; Miao Yu; Michael N.R. Ashfold

doi:10.1016/j.apsusc.2019.04.053

High-performance photoluminescence-based oxygen sensing with Pr-modified ZnO nanofibers

Tingting Jiang, Baosheng Du, Hong Zhang, Dengfeng Yu, Lei Sun, Gongyuan Zhao, Chenhui Yang, Ye Sun^*, Miao Yu, Michael N.R. Ashfold

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

Praseodymium (Pr)-modified zinc oxide (ZnO) nanofibers have been fabricated using an electrospinning-calcination method. These Pr-modified ZnO nanofibers present porous morphologies containing numerous ZnO nanocrystallites with average sizes that are much smaller than those found in pure ZnO nanofibers formed by the same procedures. Most Pr is identified at the surface of / interface between the nanocrystallites. In addition to the morphological modifications, addition of Pr is also shown to enhance the crystalline quality of the ZnO. Consequently, the Pr-modified ZnO nanofibers have a higher UV emission efficiency and exhibit a much-enhanced UV emission-based O ₂ sensing performance than the pure ZnO nanofibers. By way of illustration, the Pr-modified nanofibers show O ₂ sensing responses of R = 39% at room temperature and R = 71% at 115 °C (cf. R = 19% and 52% with the pure ZnO nanofibers at these same operating temperatures). These results suggest that electrospun Pr-modified ZnO nanofibers hold real promise for high-performance optical gas sensing applications.

Original language	English
Pages (from-to)	922-928
Number of pages	7
Journal	Applied Surface Science
Volume	483
Early online date	6 Apr 2019
DOIs	https://doi.org/10.1016/j.apsusc.2019.04.053
Publication status	Published - 31 Jul 2019

Keywords

Electrospinning
Gas sensing
Nanofibers
Photoluminescence
Praseodymium
Zinc oxide

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@article{bfb395a8bac34abfaf85e42732cb3bb0,

title = "High-performance photoluminescence-based oxygen sensing with Pr-modified ZnO nanofibers",

abstract = " Praseodymium (Pr)-modified zinc oxide (ZnO) nanofibers have been fabricated using an electrospinning-calcination method. These Pr-modified ZnO nanofibers present porous morphologies containing numerous ZnO nanocrystallites with average sizes that are much smaller than those found in pure ZnO nanofibers formed by the same procedures. Most Pr is identified at the surface of / interface between the nanocrystallites. In addition to the morphological modifications, addition of Pr is also shown to enhance the crystalline quality of the ZnO. Consequently, the Pr-modified ZnO nanofibers have a higher UV emission efficiency and exhibit a much-enhanced UV emission-based O 2 sensing performance than the pure ZnO nanofibers. By way of illustration, the Pr-modified nanofibers show O 2 sensing responses of R = 39% at room temperature and R = 71% at 115 °C (cf. R = 19% and 52% with the pure ZnO nanofibers at these same operating temperatures). These results suggest that electrospun Pr-modified ZnO nanofibers hold real promise for high-performance optical gas sensing applications. ",

keywords = "Electrospinning, Gas sensing, Nanofibers, Photoluminescence, Praseodymium, Zinc oxide",

author = "Tingting Jiang and Baosheng Du and Hong Zhang and Dengfeng Yu and Lei Sun and Gongyuan Zhao and Chenhui Yang and Ye Sun and Miao Yu and Ashfold, {Michael N.R.}",

year = "2019",

month = jul,

day = "31",

doi = "10.1016/j.apsusc.2019.04.053",

language = "English",

volume = "483",

pages = "922--928",

journal = "Applied Surface Science",

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T1 - High-performance photoluminescence-based oxygen sensing with Pr-modified ZnO nanofibers

AU - Jiang, Tingting

AU - Du, Baosheng

AU - Zhang, Hong

AU - Yu, Dengfeng

AU - Sun, Lei

AU - Zhao, Gongyuan

AU - Yang, Chenhui

AU - Sun, Ye

AU - Yu, Miao

AU - Ashfold, Michael N.R.

PY - 2019/7/31

Y1 - 2019/7/31

N2 - Praseodymium (Pr)-modified zinc oxide (ZnO) nanofibers have been fabricated using an electrospinning-calcination method. These Pr-modified ZnO nanofibers present porous morphologies containing numerous ZnO nanocrystallites with average sizes that are much smaller than those found in pure ZnO nanofibers formed by the same procedures. Most Pr is identified at the surface of / interface between the nanocrystallites. In addition to the morphological modifications, addition of Pr is also shown to enhance the crystalline quality of the ZnO. Consequently, the Pr-modified ZnO nanofibers have a higher UV emission efficiency and exhibit a much-enhanced UV emission-based O 2 sensing performance than the pure ZnO nanofibers. By way of illustration, the Pr-modified nanofibers show O 2 sensing responses of R = 39% at room temperature and R = 71% at 115 °C (cf. R = 19% and 52% with the pure ZnO nanofibers at these same operating temperatures). These results suggest that electrospun Pr-modified ZnO nanofibers hold real promise for high-performance optical gas sensing applications.

AB - Praseodymium (Pr)-modified zinc oxide (ZnO) nanofibers have been fabricated using an electrospinning-calcination method. These Pr-modified ZnO nanofibers present porous morphologies containing numerous ZnO nanocrystallites with average sizes that are much smaller than those found in pure ZnO nanofibers formed by the same procedures. Most Pr is identified at the surface of / interface between the nanocrystallites. In addition to the morphological modifications, addition of Pr is also shown to enhance the crystalline quality of the ZnO. Consequently, the Pr-modified ZnO nanofibers have a higher UV emission efficiency and exhibit a much-enhanced UV emission-based O 2 sensing performance than the pure ZnO nanofibers. By way of illustration, the Pr-modified nanofibers show O 2 sensing responses of R = 39% at room temperature and R = 71% at 115 °C (cf. R = 19% and 52% with the pure ZnO nanofibers at these same operating temperatures). These results suggest that electrospun Pr-modified ZnO nanofibers hold real promise for high-performance optical gas sensing applications.

KW - Electrospinning

KW - Gas sensing

KW - Nanofibers

KW - Photoluminescence

KW - Praseodymium

KW - Zinc oxide

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DO - 10.1016/j.apsusc.2019.04.053

M3 - Article (Academic Journal)

AN - SCOPUS:85063948948

SN - 0169-4332

VL - 483

SP - 922

EP - 928

JO - Applied Surface Science

JF - Applied Surface Science

ER -

High-performance photoluminescence-based oxygen sensing with Pr-modified ZnO nanofibers

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