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Selective gas detection using Mn3O4/WO3 composites as a sensing layer

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Abstract
Pure WO3 sensors and Mn3O4/WO3 composite sensors with different Mn concentrations (1 atom %, 3 atom % and 5 atom %) were successfully prepared through a facile hydrothermal method. As gas sensing materials, their sensing performance at different temperatures was systematically investigated for gas detection. The devices displayed different sensing responses toward different gases at specific temperatures. The gas sensing performance of Mn3O4/WO3 composites (especially at 3 atom % Mn) were far improved compared to sensors based on pure WO3, where the improvement is related to the heterojunction formed between the two metal oxides. The sensor based on the Mn3O4/WO3 composite with 3 atom % Mn showed a high selective response to hydrogen sulfide (H2S), ammonia (NH3) and carbon monoxide (CO) at working temperatures of 90 degrees C, 150 degrees C and 210 degrees C, respectively. The demonstrated superior selectivity opens the door for potential applications in gas recognition and detection.
Keywords
Mn3O4/WO3 composites, heterojunctions, working temperature, gas sensing, selectivity, NO2 DETECTION, SENSORS, WO3, NANOPARTICLES, NANORODS

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MLA
Sun, Yongjiao, et al. “Selective Gas Detection Using Mn3O4/WO3 Composites as a Sensing Layer.” BEILSTEIN JOURNAL OF NANOTECHNOLOGY, vol. 10, 2019, pp. 1423–33.
APA
Sun, Y., Yu, Z., Wang, W., Li, P., Li, G., Zhang, W., … Hu, J. (2019). Selective gas detection using Mn3O4/WO3 composites as a sensing layer. BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 10, 1423–1433.
Chicago author-date
Sun, Yongjiao, Zhichao Yu, Wenda Wang, Pengwei Li, Gang Li, Wendong Zhang, Lin Chen, Serge Zhuiykov, and Jie Hu. 2019. “Selective Gas Detection Using Mn3O4/WO3 Composites as a Sensing Layer.” BEILSTEIN JOURNAL OF NANOTECHNOLOGY 10: 1423–33.
Chicago author-date (all authors)
Sun, Yongjiao, Zhichao Yu, Wenda Wang, Pengwei Li, Gang Li, Wendong Zhang, Lin Chen, Serge Zhuiykov, and Jie Hu. 2019. “Selective Gas Detection Using Mn3O4/WO3 Composites as a Sensing Layer.” BEILSTEIN JOURNAL OF NANOTECHNOLOGY 10: 1423–1433.
Vancouver
1.
Sun Y, Yu Z, Wang W, Li P, Li G, Zhang W, et al. Selective gas detection using Mn3O4/WO3 composites as a sensing layer. BEILSTEIN JOURNAL OF NANOTECHNOLOGY. 2019;10:1423–33.
IEEE
[1]
Y. Sun et al., “Selective gas detection using Mn3O4/WO3 composites as a sensing layer,” BEILSTEIN JOURNAL OF NANOTECHNOLOGY, vol. 10, pp. 1423–1433, 2019.
@article{8623984,
  abstract     = {Pure WO3 sensors and Mn3O4/WO3 composite sensors with different Mn concentrations (1 atom %, 3 atom % and 5 atom %) were successfully prepared through a facile hydrothermal method. As gas sensing materials, their sensing performance at different temperatures was systematically investigated for gas detection. The devices displayed different sensing responses toward different gases at specific temperatures. The gas sensing performance of Mn3O4/WO3 composites (especially at 3 atom % Mn) were far improved compared to sensors based on pure WO3, where the improvement is related to the heterojunction formed between the two metal oxides. The sensor based on the Mn3O4/WO3 composite with 3 atom % Mn showed a high selective response to hydrogen sulfide (H2S), ammonia (NH3) and carbon monoxide (CO) at working temperatures of 90 degrees C, 150 degrees C and 210 degrees C, respectively. The demonstrated superior selectivity opens the door for potential applications in gas recognition and detection.},
  author       = {Sun, Yongjiao and Yu, Zhichao and Wang, Wenda and Li, Pengwei and Li, Gang and Zhang, Wendong and Chen, Lin and Zhuiykov, Serge and Hu, Jie},
  issn         = {2190-4286},
  journal      = {BEILSTEIN JOURNAL OF NANOTECHNOLOGY},
  keywords     = {Mn3O4/WO3 composites,heterojunctions,working temperature,gas sensing,selectivity,NO2 DETECTION,SENSORS,WO3,NANOPARTICLES,NANORODS},
  language     = {eng},
  pages        = {1423--1433},
  title        = {Selective gas detection using Mn3O4/WO3 composites as a sensing layer},
  url          = {http://dx.doi.org/10.3762/bjnano.10.140},
  volume       = {10},
  year         = {2019},
}

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