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Solvent Effect on the Fabrication of POMs-Based MOFs Microspheres: Dual-Function in Electrocatalytic Hydrogen Evolution and Catalytic Reduction of Cr6+.
- Source :
- Catalysis Letters; Sep2023, Vol. 153 Issue 9, p2803-2812, 10p
- Publication Year :
- 2023
-
Abstract
- In this study, a novel polyoxometalates-based metal-organic frameworks (POMOFs) microsphere, that is [Ni(phen)H<subscript>2</subscript>O]·V<subscript>2</subscript>O<subscript>6</subscript> (phen is o-phenanthroline)<subscript>,</subscript> have been successfully fabricated by one-pot simple hydro(solvent)thermal reaction through regulating different solvent ratios (H<subscript>2</subscript>O/EtOH). The experimental results show that the solvent effect has a significant effect on the micro-morphology and the catalytic activity of the materials. The dual-function in electrocatalytic hydrogen evolution and catalytic reduction of Cr<superscript>6+</superscript> of the as-prepared POMOFs microspheres have been also studied. The POMOF(V,Ni)_3 catalyst prepared in the medium of pure ethanol have the best catalytic activity, in which the overpotential of 159 mV for the electrode is comparable to that of MoS<subscript>2</subscript>-based electrode material, and the rate constant k reaches 0.14 in the process of catalytic reduction of Cr<superscript>6+</superscript>. In this study, a novel polyoxometalates-based metal-organic frameworks (POMOFs) microsphere [Ni(phen)H<subscript>2</subscript>O]·V<subscript>2</subscript>O<subscript>6</subscript> have been successfully fabricated by one-pot simple hydro(solvent)thermal reaction through regulating different solvent ratios. The dual-function in electrocatalytic hydrogen evolution and catalytic reduction of Cr<superscript>6+</superscript> of the as-prepared sample have been also studied. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1011372X
- Volume :
- 153
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Catalysis Letters
- Publication Type :
- Academic Journal
- Accession number :
- 169911287
- Full Text :
- https://doi.org/10.1007/s10562-022-04205-x