Size modulation of MIL-125 nanocrystals to promote the catalytic performance towards oxidative desulfurization

The Ti-based metal-organic framework (Ti-MOF) MIL-125 with tunable crystalline size in the range of ca. 50 nm to 1500 nm was synthesized by the coordination modulation method using trans -cinnamic acid (CA) as a modulator. The coordination modulation also induced hierarchical porosity and structure...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2021-05, Vol.5 (19), p.656-6511
Main Authors: Li, Na, Zhang, Zong-Wen, Zhang, Jia-Ni, Ma, Yue, Chen, Xiao-Yu, Fan, Yang
Format: Article
Language:English
Subjects:
Catalysis
Catalytic activity
Cinnamic acid
Coordination
Crystal defects
Desulfurizing
Metal-organic frameworks
Microcrystals
Modulation
Nanocrystals
Structural hierarchy
Sulfur compounds
Titanium
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Summary:The Ti-based metal-organic framework (Ti-MOF) MIL-125 with tunable crystalline size in the range of ca. 50 nm to 1500 nm was synthesized by the coordination modulation method using trans -cinnamic acid (CA) as a modulator. The coordination modulation also induced hierarchical porosity and structure defects on the nanocrystals. A significant size-dependent catalytic activity towards the oxidative desulfurization (ODS) reaction was observed for these MIL-125 nanocrystals. In particular, the MIL-125 nanocrystals with a mean size of ca. 50 nm exhibit dramatically enhanced catalytic performance for the bulky sulfur compound 4,6-dimethyldibenzothiophene (4,6-DMDBT) compared to the microcrystals. It is demonstrated that the size modulation of MIL-125 is an effective approach to promote its performance for the catalysis of bulky molecules. MIL-125 with tunable crystalline size in the range of ca. 50 nm to 1500 nm was synthesized by the coordination modulation method, which exhibits significant size-dependent catalytic activity towards the oxidative desulfurization reaction.
ISSN:1477-9226
1477-9234
DOI:10.1039/d1dt00774b