Edge Dislocations Induce Improved Photocatalytic Efficiency of Colored TiO 2
Abstract
Abstract Titanium oxide is the most widely used material for photocatalytic applications due to its low cost and environmental friendliness. One of the grand challenges to improve its energy conversion efficiency is to utilize more visible light while inhibiting the recombination of photogenerated electrons and holes. A one‐step hydrosolvothermal method is used to obtain colored ultrafine nanowires of rutile and nanoparticles of anatase with edge dislocations, which induce broadened visible solar absorption (400–900 nm) and improve photocatalytic efficiency up to 1.8 times that of rutile or anatase without defects. Enhanced photocatalytic activity of these structures is demonstrated by photodegrading methylene blue measurements under simulated solar light irradiation. Results show the existence of Ti 3+ , induced by edge dislocations, and subsequent electronic band structure–property relationships. This work highlights a strategy for generating sufficient desired defects in TiO 2 nanostructures, leading to broadened visible solar absorption and improved photocatalytic efficiency under visible light irradiation.
- Authors:
-
- Physical and Computational Sciences Directorate Pacific Northwest National Laboratory Richland WA 99352 USA, School of Materials Science and Engineering Tongji University Shanghai 201804 China
- Physical and Computational Sciences Directorate Pacific Northwest National Laboratory Richland WA 99352 USA
- Environmental Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland WA 99352 USA
- School of Materials Science and Engineering Tongji University Shanghai 201804 China
- Energy and Environment Directorate Pacific Northwest National Laboratory Richland WA 99352 USA
- Department of Chemical and Environmental Engineering University of California Riverside CA 92507 USA, Materials Science and Engineering University of California Riverside CA 92507 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1557017
- Grant/Contract Number:
- DE‐AC05‐76RLO1830
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Materials Interfaces
- Additional Journal Information:
- Journal Name: Advanced Materials Interfaces Journal Volume: 6 Journal Issue: 17; Journal ID: ISSN 2196-7350
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Ren, Peng, Song, Miao, Lee, Jaewon, Zheng, Jian, Lu, Zexi, Engelhard, Mark, Yang, Xiuchun, Li, Xiaolin, Kisailus, David, and Li, Dongsheng. Edge Dislocations Induce Improved Photocatalytic Efficiency of Colored TiO 2. Germany: N. p., 2019.
Web. doi:10.1002/admi.201901121.
Ren, Peng, Song, Miao, Lee, Jaewon, Zheng, Jian, Lu, Zexi, Engelhard, Mark, Yang, Xiuchun, Li, Xiaolin, Kisailus, David, & Li, Dongsheng. Edge Dislocations Induce Improved Photocatalytic Efficiency of Colored TiO 2. Germany. https://doi.org/10.1002/admi.201901121
Ren, Peng, Song, Miao, Lee, Jaewon, Zheng, Jian, Lu, Zexi, Engelhard, Mark, Yang, Xiuchun, Li, Xiaolin, Kisailus, David, and Li, Dongsheng. Tue .
"Edge Dislocations Induce Improved Photocatalytic Efficiency of Colored TiO 2". Germany. https://doi.org/10.1002/admi.201901121.
@article{osti_1557017,
title = {Edge Dislocations Induce Improved Photocatalytic Efficiency of Colored TiO 2},
author = {Ren, Peng and Song, Miao and Lee, Jaewon and Zheng, Jian and Lu, Zexi and Engelhard, Mark and Yang, Xiuchun and Li, Xiaolin and Kisailus, David and Li, Dongsheng},
abstractNote = {Abstract Titanium oxide is the most widely used material for photocatalytic applications due to its low cost and environmental friendliness. One of the grand challenges to improve its energy conversion efficiency is to utilize more visible light while inhibiting the recombination of photogenerated electrons and holes. A one‐step hydrosolvothermal method is used to obtain colored ultrafine nanowires of rutile and nanoparticles of anatase with edge dislocations, which induce broadened visible solar absorption (400–900 nm) and improve photocatalytic efficiency up to 1.8 times that of rutile or anatase without defects. Enhanced photocatalytic activity of these structures is demonstrated by photodegrading methylene blue measurements under simulated solar light irradiation. Results show the existence of Ti 3+ , induced by edge dislocations, and subsequent electronic band structure–property relationships. This work highlights a strategy for generating sufficient desired defects in TiO 2 nanostructures, leading to broadened visible solar absorption and improved photocatalytic efficiency under visible light irradiation.},
doi = {10.1002/admi.201901121},
journal = {Advanced Materials Interfaces},
number = 17,
volume = 6,
place = {Germany},
year = {Tue Aug 13 00:00:00 EDT 2019},
month = {Tue Aug 13 00:00:00 EDT 2019}
}
https://doi.org/10.1002/admi.201901121
Web of Science
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