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Size Fractionation of Two‐Dimensional Sub‐Nanometer Thin Manganese Dioxide Crystals towards Superior Urea Electrocatalytic Conversion
Abstract
A universal technique has been proposed to sort two‐dimensional (2D) sub‐nanometer thin crystals (manganese dioxide MnO 2 and molybdenum disulfide MoS 2) according to their lateral dimensions. This technique is based on tuning the zeta potential of their aqueous dispersions which induces the selective sedimentation of large‐sized 2D crystals and leaves the small‐sized counterparts in suspension. The electrocatalytic properties of as‐obtained 2D ultrathin crystals are strongly dependent on their lateral size. As a proof‐of‐concept study, the small‐sized MnO 2 nanocrystals were tested as the electrocatalysts for the urea‐oxidation reaction (UOR), which showed outstanding performance in both half reaction and full electrolytic cell. A mechanism study reveals the enhanced performance is associated with the remarkable structural properties of MnO 2 including ultrathin (ca. 0.95 nm), laterally small‐sized (50–200 nm), and highly exposed active centers.
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Cited by
Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting
Quan, L., Jiang, H., Mei, G., Sun, Y., & You, B. (2024) · Chemical Reviews · doi:10.1021/acs.chemrev.3c00332 · Cited by 874
Pu, Z., Liu, T., Amiinu, I. S., Cheng, R., Wang, P., Zhang, C., Ji, P., Hu, W., Liu, J., & Mu, S. (2020) · Advanced Functional Materials · doi:10.1002/adfm.202004009 · Cited by 604
Liu, T., Liu, D., Qu, F., Wang, D., Zhang, L., Ge, R., Hao, S., Ma, Y., Du, G., Asiri, A. M., et al. (2017) · Advanced Energy Materials · doi:10.1002/aenm.201700020 · Cited by 601
Wang, Z., Xu, L., Huang, F., Qu, L., Li, J., Owusu, K. A., Liu, Z., Lin, Z., Xiang, B., Liu, X., et al. (2019) · Advanced Energy Materials · doi:10.1002/aenm.201900390 · Cited by 405
Recent Advancements in Electrochemical Hydrogen Production via Hybrid Water Splitting
Qian, Q., Zhu, Y., Ahmad, N., Feng, Y., Zhang, H., Cheng, M., Liu, H., Xiao, C., Zhang, G., & Xie, Y. (2024) · Advanced Materials · doi:10.1002/adma.202306108 · Cited by 399
Metadata
- Authors
- Chen, S., Duan, J., Vasileff, A., & Qiao, S. Z.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2016-02-16
- Volume
- 55
- Issue
- 11
- Pages
- 3804-3808
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2279037495
- Cited by
- 347
- References
- 0
- FWCI
- 9.65
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, S., Duan, J., Vasileff, A., & Qiao, S. Z. (2016). Size Fractionation of Two‐Dimensional Sub‐Nanometer Thin Manganese Dioxide Crystals towards Superior Urea Electrocatalytic Conversion. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201600387
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