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Electrospinning preparation of Pd@Co3O4-ZnO composite nanofibers and their highly enhanced VOC sensing properties

(2019) MATERIALS RESEARCH BULLETIN. 109. p.255-264
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Abstract
In this paper, pure ZnO, Co3O4-ZnO, Pd@ZnO and Pd@Co3O4-ZnO composite nanofibers were synthesized by electrospinning method. Multiple characterizations were employed to investigate the crystal structure, composition, morphology, and bonding states of the Pd@Co3O4-ZnO composite nanofibers. The sensing properties of the as -synthesized nanofibers were evaluated toward different volatile organic components (VOCs) including ethanol, acetone, isopropanol and formaldehyde under the various operating temperatures. The obtained results have clearly demonstrated that the Pd@Co3O4-ZnO composite nanofibers exhibits significantly enhanced VOC sensing performance compared with other nanofibers. Specifically, the response of Pd@Co3O4-ZnO composite nanofibers toward 200 ppm ethanol is 59 at 240 degrees C, which is much higher than that of ZnO nanofibers. The enhanced VOC sensing properties of Pd@Co3O4-ZnO composite nanofibers could be attributed to the electronic and chemical sensitizations of Pd and the p-n junction formation at the interface of Co3O4 and ZnO.
Keywords
Electrospinning, Gas sensor, Nanofiber, Pcl@Co3O4-ZnO, Ethanol, GAS SENSOR, DOPED ZNO, PD, NANOPARTICLES, PERFORMANCE, ARRAYS, MICROSTRUCTURES, NANOSTRUCTURES, MICROSPHERES, SENSITIVITY

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Chicago
Sun, Yongjiao, Zepeng Wang, Wenda Wang, Gang Li, Pengwei Li, Kun Lian, Wendong Zhang, Serge Zhuiykov, Jie Hu, and Lin Chen. 2019. “Electrospinning Preparation of Pd@Co3O4-ZnO Composite Nanofibers and Their Highly Enhanced VOC Sensing Properties.” Materials Research Bulletin 109: 255–264.
APA
Sun, Yongjiao, Wang, Z., Wang, W., Li, G., Li, P., Lian, K., Zhang, W., et al. (2019). Electrospinning preparation of Pd@Co3O4-ZnO composite nanofibers and their highly enhanced VOC sensing properties. MATERIALS RESEARCH BULLETIN, 109, 255–264.
Vancouver
1.
Sun Y, Wang Z, Wang W, Li G, Li P, Lian K, et al. Electrospinning preparation of Pd@Co3O4-ZnO composite nanofibers and their highly enhanced VOC sensing properties. MATERIALS RESEARCH BULLETIN. 2019;109:255–64.
MLA
Sun, Yongjiao et al. “Electrospinning Preparation of Pd@Co3O4-ZnO Composite Nanofibers and Their Highly Enhanced VOC Sensing Properties.” MATERIALS RESEARCH BULLETIN 109 (2019): 255–264. Print.
@article{8604799,
  abstract     = {In this paper, pure ZnO, Co3O4-ZnO, Pd@ZnO and Pd@Co3O4-ZnO composite nanofibers were synthesized by electrospinning method. Multiple characterizations were employed to investigate the crystal structure, composition, morphology, and bonding states of the Pd@Co3O4-ZnO composite nanofibers. The sensing properties of the as -synthesized nanofibers were evaluated toward different volatile organic components (VOCs) including ethanol, acetone, isopropanol and formaldehyde under the various operating temperatures. The obtained results have clearly demonstrated that the Pd@Co3O4-ZnO composite nanofibers exhibits significantly enhanced VOC sensing performance compared with other nanofibers. Specifically, the response of Pd@Co3O4-ZnO composite nanofibers toward 200 ppm ethanol is 59 at 240 degrees C, which is much higher than that of ZnO nanofibers. The enhanced VOC sensing properties of Pd@Co3O4-ZnO composite nanofibers could be attributed to the electronic and chemical sensitizations of Pd and the p-n junction formation at the interface of Co3O4 and ZnO.},
  author       = {Sun, Yongjiao and Wang, Zepeng and Wang, Wenda and Li, Gang and Li, Pengwei and Lian, Kun and Zhang, Wendong and Zhuiykov, Serge and Hu, Jie and Chen, Lin},
  issn         = {0025-5408},
  journal      = {MATERIALS RESEARCH BULLETIN},
  keywords     = {Electrospinning,Gas sensor,Nanofiber,Pcl@Co3O4-ZnO,Ethanol,GAS SENSOR,DOPED ZNO,PD,NANOPARTICLES,PERFORMANCE,ARRAYS,MICROSTRUCTURES,NANOSTRUCTURES,MICROSPHERES,SENSITIVITY},
  language     = {eng},
  pages        = {255--264},
  title        = {Electrospinning preparation of Pd@Co3O4-ZnO composite nanofibers and their highly enhanced VOC sensing properties},
  url          = {http://dx.doi.org/10.1016/j.materresbull.2018.10.001},
  volume       = {109},
  year         = {2019},
}

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