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ZIF-8/Zn2GeO4 nanorods with an enhanced CO2 adsorption property in an aqueous medium for photocatalytic synthesis of liquid fuel.
- Source :
- Journal of Materials Chemistry A; 2013, Vol. 1 Issue 38, p11563-11569, 7p
- Publication Year :
- 2013
-
Abstract
- The photoreduction of CO<subscript>2</subscript> on inorganic semiconductors has been researched for several decades, but the conversion efficiency is still low due to the recombination of photo-generated electron–hole pairs, low utilization efficiency of solar energy and weak adsorption of CO<subscript>2</subscript>. Here we for the first time demonstrate that metal–organic frameworks such as ZIF-8 can effectively adsorb CO<subscript>2</subscript> dissolved in water, and promote photocatalytic activity of a semiconductor catalyst in CO<subscript>2</subscript> reduction into liquid fuels in an aqueous medium. In particular, Zn<subscript>2</subscript>GeO<subscript>4</subscript>/ZIF-8 hybrid nanorods were successfully synthesized by growing ZIF-8 nanoparticles on Zn<subscript>2</subscript>GeO<subscript>4</subscript> nanorods. The Zn<subscript>2</subscript>GeO<subscript>4</subscript>/ZIF-8 nanocomposite inherits both high CO<subscript>2</subscript> adsorption capacity of ZIF-8 nanoparticles and high crystallinity of Zn<subscript>2</subscript>GeO<subscript>4</subscript> nanorods. The Zn<subscript>2</subscript>GeO<subscript>4</subscript>/ZIF-8 hybrid nanorods containing 25 wt% ZIF-8 exhibit 3.8 times higher dissolved CO<subscript>2</subscript> adsorption capacity than the bare Zn<subscript>2</subscript>GeO<subscript>4</subscript> nanorods, resulting in a 62% enhancement in photocatalytic conversion of CO<subscript>2</subscript> into liquid CH<subscript>3</subscript>OH fuel. The strategy reported here is promising for developing more active photocatalysts for improving CO<subscript>2</subscript> conversion efficiency by taking advantage of excellent adsorption property of metal–organic frameworks in aqueous media. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 1
- Issue :
- 38
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 100922639
- Full Text :
- https://doi.org/10.1039/c3ta12433a