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- Title
MnFe<sub>2</sub>O<sub>4</sub> Nanocrystals Wrapped in a Porous Organic Polymer: A Designed Architecture for Water-Splitting Photocatalysis.
- Authors
Dhanalaxmi, Karnekanti; Yadav, Rajkumar; Kundu, Sudipta K.; Reddy, Benjaram Mahipal; Amoli, Vipin; Sinha, Anil Kumar; Mondal, John
- Abstract
A novel MnFe2O4-porous organic polymer (POP) nanocomposite was synthesized by a facile hydrothermal method and using the highly cross-linked N-rich benzene-benzylamine POP. The nanocomposite presented highly efficient photocatalytic performance in the hydrogen evolution reaction (HER) from pure water without addition of any sacrificial agent under one AM 1.5 G sunlight illumination. A photocatalytic activity of 6.12 mmol h−1 g−1 was achieved in the absence of any noble metal cocatalyst, which is the highest H2 production rate reported for nonprecious metal catalysts. The photocatalytic performance of MnFe2O4-POP could be attributed to the intrinsic synergistic effects of manganese ferrite (MnFe2O4) nanoclusters interacting with the nitrogen dopant POP with a unique mesoporous nanoarchitecture and spatially confined growth of MnFe2O4 in the interconnected POP network, leading to high visible-light absorption with fast electron transport.
- Subjects
MANGANESE compounds; CHEMICAL synthesis; FERRITES; NANOCRYSTALS; BENZENE compounds; PHOTOCATALYSIS; HYDROGEN evolution reactions; WATER electrolysis; HYDROTHERMAL synthesis
- Publication
Chemistry - A European Journal, 2016, Vol 22, Issue 44, p15639
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201603419