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Co3O4-loaded ZnO nanofibers for excellent hydrogen sensing

Title
Co3O4-loaded ZnO nanofibers for excellent hydrogen sensing
Author
김현우
Keywords
ZnO; Co3O4; Nanofiber; Gas sensor; Sensing mechanism
Issue Date
2019-10
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v. 44, no. 50, Page. 27499-27510
Abstract
The development of outstanding H-2 -sensing materials is vital for the realization of eco-friendly devices using H-2-based energy. ZnO nanofibers have excellent H-2-sensing performance. In this study, we synthesized a series of Co3O4-loaded ZnO nanofibers with the formula (1-x)ZnO-xCo(3)O(4)(x = 0.03, 0.05, 0.1, and 0.15, representing the molar ratio of Co3O4) via electrospinning to improve the H-2-sensing properties of pristine nanofibers. The sensing results indicated that a sensor with a nominal composition of 0.95ZnO-0.05Co(3)O(4) had the highest response of similar to 133 to 10 ppm H-2 gas, with good H-2 selectivity. The main mechanisms underlying the excellent H-2-sensing capability of the optimized gas sensor involved ZnO surface/grain boundaries and Co3O4. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0360319919332458?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/154441
ISSN
0360-3199; 1879-3487
DOI
10.1016/j.ijhydene.2019.08.226
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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