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Water Oxidation by λ-MnO2: Catalysis by the Cubical Mn4O4 Subcluster Obtained by Delithiation of Spinel LiMn2O4
Abstract
Nanocrystalline spinel LiMn(2)O(4) has been prepared and treatment of LiMn(2)O(4) with dilute nitric acid solution resulted in the delithiation of the framework, while maintaining the spinel structure, lambda-MnO(2). LiMn(2)O(4) is not a catalyst for water oxidation. Upon removal of the lithium, the cubical Mn(4)O(4) cores become active sites for oxidizing water to molecular oxygen, which was investigated with the photochemical [Ru(2+)(2,2'-bpy)(3)]/persulfate system at pH 5.8. The nanosize lambda-MnO(2) obtained from the nanocrystalline LiMn(2)O(4), which was synthesized by the citrate route, shows a significantly higher water oxidation catalytic activity (Turnover Frequency: 3 x 10(-5) mol O(2)/s/mol Mn) than that obtained via solid state reaction with micrometer and irregular particle sizes (Turnover Frequency: 5 x 10(-6) mol O(2)/s/mol Mn).
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Cited by
Extraction of lithium with functionalized lithium ion-sieves
Xu, X., Chen, Y., Wan, P., Gasem, K., Wang, K., He, T., Adidharma, H., & Fan, M. (2016) · Progress in Materials Science · doi:10.1016/j.pmatsci.2016.09.004 · Cited by 536
Hydrated Manganese(II) Phosphate (Mn3(PO4)2·3H2O) as a Water Oxidation Catalyst
Jin, K., Park, J., Lee, J., Yang, K. D., Pradhan, G. K., Sim, U., Jeong, D., Jang, H. L., Park, S., Kim, D., et al. (2014) · Journal of the American Chemical Society · doi:10.1021/ja5026529 · Cited by 377
Direct lithium extraction: A new paradigm for lithium production and resource utilization
Farahbakhsh, J., Arshadi, F., Mofidi, Z., Mohseni-Dargah, M., Kök, C., Assefi, M., Soozanipour, A., Zargar, M., Asadnia, M., Boroumand, Y., et al. (2024) · Desalination · doi:10.1016/j.desal.2023.117249 · Cited by 260
Introduction of manganese-based lithium-ion Sieve-A review
Weng, D., Duan, H., Hou, Y., Huo, J., Chen, L., Zhang, F., & Wang, J. (2020) · Progress in Natural Science: Materials International · doi:10.1016/j.pnsc.2020.01.017 · Cited by 230
Zhang, W., Wu, Y., Qi, J., Chen, M., & Cao, R. (2017) · Advanced Energy Materials · doi:10.1002/aenm.201602547 · Cited by 215
Metadata
- Authors
- Robinson, D. M., Go, Y. B., Greenblatt, M., & Dismukes, G. C.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-07-30
- Volume
- 132
- Issue
- 33
- Pages
- 11467-11469
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2068883886
- Cited by
- 286
- References
- 0
- FWCI
- 24.18
- Type
- journal article
- Language
- en
- Open access
- closed
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- Robinson, D. M., Go, Y. B., Greenblatt, M., & Dismukes, G. C. (2010). Water Oxidation by λ-MnO2: Catalysis by the Cubical Mn4O4 Subcluster Obtained by Delithiation of Spinel LiMn2O4. Journal of the American Chemical Society. https://doi.org/10.1021/ja1055615
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