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Confined Formation of Ultrathin ZnO Nanorods/Reduced Graphene Oxide Mesoporous Nanocomposites for High-Performance Room-Temperature NO2 Sensors
Abstract
Here we demonstrate high-performance room-temperature NO 2 sensors based on ultrathin ZnO nanorods/reduced graphene oxide (rGO) mesoporous nanocomposites. Ultrathin ZnO nanorods were loaded on rGO nanosheets by a facile two-step additive-free solution synthesis involving anchored seeding followed by oriented growth. The ZnO nanorod diameters were simply controlled by the seed diameters associated with the spatial confinement effects of graphene oxide (GO) nanosheets. Compared to the solely ZnO nanorods and rGO-based sensors, the optimal sensor based on ultrathin ZnO nanorods/rGO nanocomposites exhibited higher sensitivity and quicker p-type response to parts per million level of NO 2 at room temperature, and the sensitivity to 1 ppm of NO 2 was 119% with the response and recovery time being 75 and 132 s. Moreover, the sensor exhibited full reversibility, excellent selectivity, and a low detection limit (50 ppb) to NO 2 at room temperature. In addition to the high transport capability of rGO as well as excellent NO 2 adsorption ability derived from ultrathin ZnO nanorods and mesoporous structures, the superior sensing performance of the nanocomposites was attributed to the synergetic effect of ZnO and rGO, which was realized by the electron transfer across the ZnO–rGO interfaces through band energy alignment.
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Cites
Zhong, H., Wang, J., Zhang, Y., Xu, W., Xing, W., Xu, D., Zhang, Y., & Zhang, X. (2014) · Angewandte Chemie International Edition · doi:10.1002/anie.201408990 · Cited by 938
Self-citationSong, Z., Wei, Z., Wang, B., Luo, Z., Xu, S., Zhang, W., Yu, H., Li, M., Huang, Z., Zang, J., et al. (2016) · Chemistry of Materials · doi:10.1021/acs.chemmater.5b04850 · Cited by 438
Cited by
Two‐Dimensional Nanostructured Materials for Gas Sensing
Liu, X., Ma, T., Pinna, N., & Zhang, J. (2017) · Advanced Functional Materials · doi:10.1002/adfm.201702168 · Cited by 851
Li, Z., Li, H., Wu, Z., Wang, M., Luo, J., Torun, H., Hu, P., Yang, C., Grundmann, M., Liu, X., et al. (2019) · Materials Horizons · doi:10.1039/c8mh01365a · Cited by 760
Tarcan, R., Todor-Boer, O., Petrovai, I., Leordean, C., Astilean, S., & Botiz, I. (2020) · Journal of Materials Chemistry C · doi:10.1039/c9tc04916a · Cited by 723
Functional gas sensing nanomaterials: A panoramic view
Malik, R., Tomer, V. K., Mishra, Y. K., & Lin, L. (2020) · Applied Physics Reviews · doi:10.1063/1.5123479 · Cited by 410
Sun, T., Feng, B., Huo, J., Xiao, Y., Wang, W., Peng, J., Li, Z., Du, C., Wang, W., Zou, G., et al. (2024) · Nano-Micro Letters · doi:10.1007/s40820-023-01235-x · Cited by 384
Metadata
- Authors
- Xia, Y., Wang, J., Xu, J.-L., Li, X., Xie, D., Xiang, L., & Komarneni, S.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-12-14
- Volume
- 8
- Issue
- 51
- Pages
- 35454-35463
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2559676790
- Cited by
- 245
- References
- 2
- FWCI
- 13.87
- Type
- journal article
- Language
- en
- Open access
- closed
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- Xia, Y., Wang, J., Xu, J.-L., Li, X., Xie, D., Xiang, L., & Komarneni, S. (2016). Confined Formation of Ultrathin ZnO Nanorods/Reduced Graphene Oxide Mesoporous Nanocomposites for High-Performance Room-Temperature NO2 Sensors. ACS Applied Materials & Interfaces. https://doi.org/10.1021/acsami.6b12501
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