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Pt Nanoparticles Sensitized Ordered Mesoporous WO3 Semiconductor: Gas Sensing Performance and Mechanism Study
Abstract
In this study, a straightforward coassembly strategy is demonstrated to synthesize Pt sensitized mesoporous WO 3 with crystalline framework through the simultaneous coassembly of amphiphilic poly(ethylene oxide)‐b‐polystyrene, hydrophobic platinum precursors, and hydrophilic tungsten precursors. The obtained WO 3/Pt nanocomposites possess large pore size (≈13 nm), high surface area (128 m 2 g−1), large pore volume (0.32 cm 3 g−1), and Pt nanoparticles (≈4 nm) in situ homogeneously distributed in mesopores, and they exhibit excellent catalytic sensing response to CO of low concentration at low working temperature with good sensitivity, ultrashort response‐recovery time (16 s/1 s), and high selectivity. In‐depth study reveals that besides the contribution from the fast diffusion of gaseous molecules and rich interfaces in mesoporous WO 3/Pt nanocomposites, the partially oxidized Pt nanoparticles that chemically and electronically sensitize the crystalline WO 3 matrix, dramatically enhance the sensitivity and selectivity.
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Generalized syntheses of large-pore mesoporous metal oxides with semicrystalline frameworks
Yang, P., Zhao, D., Margolese, D. I., Chmelka, B. F., & Stucky, G. D. (1998) · Nature · doi:10.1038/24132 · Cited by 2,493
Self-citationBa, J., Polleux, J., Antonietti, M., & Niederberger, M. (2005) · Advanced Materials · doi:10.1002/adma.200501018 · Cited by 271
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Encapsulated Metal Nanoparticles for Catalysis
Gao, C., Lyu, F., & Yin, Y. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00237 · Cited by 855
Li, C., Li, Q., Kaneti, Y. V., Hou, D., Yamauchi, Y., & Mai, Y. (2020) · Chemical Society Reviews · doi:10.1039/d0cs00021c · Cited by 513
Gas Sensors Based on Chemi-Resistive Hybrid Functional Nanomaterials
Jian, Y., Hu, W., Zhao, Z., Cheng, P., Haick, H., Yao, M., & Wu, W. (2020) · Nano-Micro Letters · doi:10.1007/s40820-020-0407-5 · Cited by 429
Oxygen vacancy defects engineering on Ce-doped α-Fe2O3 gas sensor for reducing gases
Wang, X., Wang, T., Si, G., Li, Y., Zhang, S., Deng, X., & Xu, X. (2020) · Sensors and Actuators B: Chemical · doi:10.1016/j.snb.2019.127165 · Cited by 367
Li, T., Yin, W., Gao, S., Sun, Y., Xu, P., Wu, S., Kong, H., Yang, G., & Wei, G. (2022) · Nanomaterials · doi:10.3390/nano12060982 · Cited by 222
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Metadata
- Authors
- Ma, J., Ren, Y., Zhou, X., Liu, L., Zhu, Y., Cheng, X., Xu, P., Li, X., Deng, Y., & Zhao, D.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2017-12-11
- Volume
- 28
- Issue
- 6
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2772841364
- Cited by
- 351
- References
- 2
- FWCI
- 14.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ma, J., Ren, Y., Zhou, X., Liu, L., Zhu, Y., Cheng, X., Xu, P., Li, X., Deng, Y., & Zhao, D. (2018). Pt Nanoparticles Sensitized Ordered Mesoporous WO3 Semiconductor: Gas Sensing Performance and Mechanism Study. Advanced Functional Materials. https://doi.org/10.1002/adfm.201705268
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