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Co₃O₄-loaded ZnO nanofibers for excellent hydrogen sensingCo3O4-loaded ZnO nanofibers for excellent hydrogen sensing
- Other Titles
- Co3O4-loaded ZnO nanofibers for excellent hydrogen sensing
- Issue Date
- Oct-2019
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- ZnO; Co3O4; Nanofiber; Gas sensor; Sensing mechanism
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.44, no.50, pp.27499 - 27510
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 44
- Number
- 50
- Start Page
- 27499
- End Page
- 27510
- ISSN
- 0360-3199
- 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.
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Related Researcher
- Kim, Hyoun Woo
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)