Direct synthesis of platinum nanodots in ZIF-8/Fe3O4 core–shell hybrid nanoparticles
SCIE
SCOPUS
- Title
- Direct synthesis of platinum nanodots in ZIF-8/Fe3O4 core–shell hybrid nanoparticles
- Authors
- LEE, SANG HEE; Yim, Changyong; JEON, SANGMIN
- Date Issued
- 2017-06
- Publisher
- Royal Society of Chemistry
- Abstract
- A novel method was developed for synthesizing platinum nanodots inside zeolitic imidazolate framework nanostructures without using additional reducing agents. Fe3O4 magnetic nanoparticle clusters (MNCs) were synthesized and coated with ZIF-8 (ZIF) shells via a hydrothermal reaction. Upon addition of ZIF/MNC hybrid nanoparticles into a platinum precursor (K2PtCl4) solution, platinum ions were reduced to metallic platinum nanodots by the 2-methyl imidazolate groups. The resulting platinum nanodots were ∼2 nm in diameter and uniformly distributed in the pores of the ZIF layer. The catalytic activity of the platinum nanodots was examined by using Pt/ZIF/MNCs for the reduction of 4-nitrophenol. The resulting high catalytic activity was attributed to the high surface area of the platinum nanodots and the absence of capping layers. Furthermore, the hybrid nanoparticles were recovered using a permanent magnet and were found to maintain their catalytic activity after multiple cycles.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/41236
- DOI
- 10.1039/C7RA04711H
- ISSN
- 2046-2069
- Article Type
- Article
- Citation
- RSC Advances, vol. 7, no. 50, page. 31239 - 31243, 2017-06
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