期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 44, 页码 38051-38056出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b12686
关键词
secondary building units; shape-controlled; Prussian blue analogue; DFT calculation; Fenton reaction
资金
- National Natural Science Foundation of China [21476232, 21607029, 21777033]
- fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics [N-16-07]
- China Ministry of Science and Technology [2016YFA0202804]
- Science and Technology Program of Guangdong Province [2017B020216003]
- Science and Technology Program of Guangzhou City [201707010359]
- 1000 plan for Young Professionals' Program of China
- 100 talents Program of Guangdong University of Technology
Controllable synthesis of metal-organic frameworks with well-defined morphology, composition, and size is of great importance toward understanding their structure-property relationship in various applications. Herein, we demonstrate a general strategy to modulate the relative growth rate of the secondary building units (SBUs) along different crystal facets for the synthesis of Fe-Co, Mn0.5Fe0.5-Co, and Mn-Co Prussian blue analogues (PBAs) with tunable morphologies. The same growth rate of SBUs along the {100}, {110}, and {111} surfaces at 0 degrees C results in the formation of spherical PBA particles, while the lowest growth rate of SBUs along the {100} surface resulting from the highest surface energy with increasing reaction temperature induces the formation of PBA cubes. Fenton reaction was used as the model reaction to probe the structure-catalytic activity relation for the as-synthesized catalysts. The cubic Fe-Co PBA was found to exhibit the best catalytic performance with reaction rate constant 6 times higher than that of the spherical counterpart. Via density functional theory calculations, the abundant enclosed {100} facets in cubic Fe-Co PBA were identified to have the highest surface energy and favor high Fenton reaction activity.
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