Guided Assembly of Microporous/Mesoporous Manganese Phosphates by Bifunctional Organophosphonic Acid Etching and Templating

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 25 vom: 26. Juni, Seite e1901124
1. Verfasser: Hu, Yating (VerfasserIn)
Weitere Verfasser: Zhang, Yu, Li, Changjian, Wang, Ling, Du, Yonghua, Mo, Guang, Li, Xu, Cheetham, Anthony K, Wang, John
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article ionocovalent manganese phosphate microporous oxygen evolution reaction soft templates
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520 |a Manganese (Mn)-based compounds are important materials for both energy conversion and energy storage. Unfortunately, it has been a significant challenge to develop highly ordered microporous/mesoporous structures for them to provide more active sites for these applications. In order to do so using the soft-templating method, three conditions have to be met, namely, a strong interaction between the inorganic precursor and the organic templates; eliminating the formation of bulk manganese phosphate; and the preservation of the manganese phosphate framework without it collapsing upon template removal. Herein, a soft-templating approach is reported using an organophosphonic acid (n-hexylphosphonic acid) as both the etching and the templating agent, followed by high-vacuum-assisted annealing. This approach simultaneously satisfies the above conditions. Both microporous and mesoporous manganese phosphates with uniform pore sizes and well-defined pore structures are obtained. The utilization of the organophosphonic acid is shown to be the key in the transformation from bulk manganese oxide into a highly ordered microporous phosphate. A very high surface area of 304.1 m2 g-1 is obtained for the microporous manganese phosphate, which is the highest among the reported values for Mn-based compounds. The ultrafine micropores and high specific surface area of our manganese phosphate promote electrocatalytic activity for the oxygen evolution reaction 
650 4 |a Journal Article 
650 4 |a ionocovalent 
650 4 |a manganese phosphate 
650 4 |a microporous 
650 4 |a oxygen evolution reaction 
650 4 |a soft templates 
700 1 |a Zhang, Yu  |e verfasserin  |4 aut 
700 1 |a Li, Changjian  |e verfasserin  |4 aut 
700 1 |a Wang, Ling  |e verfasserin  |4 aut 
700 1 |a Du, Yonghua  |e verfasserin  |4 aut 
700 1 |a Mo, Guang  |e verfasserin  |4 aut 
700 1 |a Li, Xu  |e verfasserin  |4 aut 
700 1 |a Cheetham, Anthony K  |e verfasserin  |4 aut 
700 1 |a Wang, John  |e verfasserin  |4 aut 
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773 1 8 |g volume:31  |g year:2019  |g number:25  |g day:26  |g month:06  |g pages:e1901124 
856 4 0 |u http://dx.doi.org/10.1002/adma.201901124  |3 Volltext 
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