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Title: Photoelectrical, photophysical and photocatalytic properties of Al based MOFs: MIL-53(Al) and MIL-53-NH{sub 2}(Al)

Abstract

Two Al based MOFs (MIL-53(Al) and MIL-53-NH{sub 2} (Al)) were synthesized, and their photoelectrical, photophysical and photocatalytic properties towards oxygen evolution from water were investigated. Different from the ligand to metal charge transfer process previously reported, we proposes a new photocatalytic mechanism based on electron tunneling according to the results of theoretical calculation, steady state and time resolved fluorescence spectra. The organic linkers absorb photons, giving rise to electrons and holes. Then, the photogenerated electrons tunnel through the AlO{sub 6}-octahedra, which not only inhibit the recombination of photogenerated charge carriers, but also is a key factor to the photocatalytic activity of Al based MOFs. - Graphical abstract: The photoelectrical, photophysical and photocatalytic properties towards oxygen evolution from water of two Al based MOFs were investigated. A new photocatalytic mechanism was proposed based on electron tunneling according to the results of both theoretical calculation and steady state, time resolved fluorescence spectra. The electron tunneling process not only inhibit the recombination of photogenerated charge carriers, but also is a key factor to the photocatalytic activity of Al based MOFs.

Authors:
;  [1];  [1];  [1]; ;  [2]; ;  [1]
  1. State Key Lab of Crystal Materials, Shandong University, Jinan 250100 (China)
  2. School of Physics, Shandong University, Jinan 250100 (China)
Publication Date:
OSTI Identifier:
22577731
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 233; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHARGE CARRIERS; ELECTRONS; FLUORESCENCE; FLUORESCENCE SPECTROSCOPY; LIGANDS; OXYGEN; PHOTOCATALYSIS; PHOTONS; TIME RESOLUTION; TUNNEL EFFECT; TUNNELING; WATER

Citation Formats

An, Yang, Li, Huiliang, Liu, Yuanyuan, E-mail: yyliu@sdu.edu.cn, Huang, Baibiao, E-mail: bbhuang@sdu.edu.cn, Sun, Qilong, Dai, Ying, Qin, Xiaoyan, and Zhang, Xiaoyang. Photoelectrical, photophysical and photocatalytic properties of Al based MOFs: MIL-53(Al) and MIL-53-NH{sub 2}(Al). United States: N. p., 2016. Web. doi:10.1016/J.JSSC.2015.10.037.
An, Yang, Li, Huiliang, Liu, Yuanyuan, E-mail: yyliu@sdu.edu.cn, Huang, Baibiao, E-mail: bbhuang@sdu.edu.cn, Sun, Qilong, Dai, Ying, Qin, Xiaoyan, & Zhang, Xiaoyang. Photoelectrical, photophysical and photocatalytic properties of Al based MOFs: MIL-53(Al) and MIL-53-NH{sub 2}(Al). United States. doi:10.1016/J.JSSC.2015.10.037.
An, Yang, Li, Huiliang, Liu, Yuanyuan, E-mail: yyliu@sdu.edu.cn, Huang, Baibiao, E-mail: bbhuang@sdu.edu.cn, Sun, Qilong, Dai, Ying, Qin, Xiaoyan, and Zhang, Xiaoyang. Fri . "Photoelectrical, photophysical and photocatalytic properties of Al based MOFs: MIL-53(Al) and MIL-53-NH{sub 2}(Al)". United States. doi:10.1016/J.JSSC.2015.10.037.
@article{osti_22577731,
title = {Photoelectrical, photophysical and photocatalytic properties of Al based MOFs: MIL-53(Al) and MIL-53-NH{sub 2}(Al)},
author = {An, Yang and Li, Huiliang and Liu, Yuanyuan, E-mail: yyliu@sdu.edu.cn and Huang, Baibiao, E-mail: bbhuang@sdu.edu.cn and Sun, Qilong and Dai, Ying and Qin, Xiaoyan and Zhang, Xiaoyang},
abstractNote = {Two Al based MOFs (MIL-53(Al) and MIL-53-NH{sub 2} (Al)) were synthesized, and their photoelectrical, photophysical and photocatalytic properties towards oxygen evolution from water were investigated. Different from the ligand to metal charge transfer process previously reported, we proposes a new photocatalytic mechanism based on electron tunneling according to the results of theoretical calculation, steady state and time resolved fluorescence spectra. The organic linkers absorb photons, giving rise to electrons and holes. Then, the photogenerated electrons tunnel through the AlO{sub 6}-octahedra, which not only inhibit the recombination of photogenerated charge carriers, but also is a key factor to the photocatalytic activity of Al based MOFs. - Graphical abstract: The photoelectrical, photophysical and photocatalytic properties towards oxygen evolution from water of two Al based MOFs were investigated. A new photocatalytic mechanism was proposed based on electron tunneling according to the results of both theoretical calculation and steady state, time resolved fluorescence spectra. The electron tunneling process not only inhibit the recombination of photogenerated charge carriers, but also is a key factor to the photocatalytic activity of Al based MOFs.},
doi = {10.1016/J.JSSC.2015.10.037},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 233,
place = {United States},
year = {2016},
month = {1}
}