Direct Observation of Photoinduced Charge Separation in Ruthenium Complex/Ni(OH)2 Nanoparticle Hybrid
Abstract
We report that Ni(OH)2 have emerged as important functional materials for solar fuel conversion because of their potential as cost-effective bifunctional catalysts for both hydrogen and oxygen evolution reactions. However, their roles as photocatalysts in the photoinduced charge separation (CS) reactions remain unexplored. In this paper, we investigate the CS dynamics of a newly designed hybrid catalyst by integrating a Ru complex with Ni(OH)2 nanoparticles (NPs). Using time resolved X-ray absorption spectroscopy (XTA), we directly observed the formation of the reduced Ni metal site (~60 ps), unambiguously demonstrating CS process in the hybrid through ultrafast electron transfer from Ru complex to Ni(OH)2 NPs. Compared to the ultrafast CS process, the charge recombination in the hybrid is ultraslow (>>50 ns). These results not only suggest the possibility of developing Ni(OH)2 as solar fuel catalysts, but also represent the first time direct observation of efficient CS in a hybrid catalyst using XTA.
- Authors:
-
- Marquette Univ., Milwaukee, WI (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1236501
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 5; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY
Citation Formats
Tang, Yu, Pattengale, Brian A., Ludwig, John M., Atifi, Abderrahman, Zinovev, Alexander V., Dong, Bin, Kong, Qingyu, Zuo, Xiaobing, Zhang, Xiaoyi, and Huang, Jier. Direct Observation of Photoinduced Charge Separation in Ruthenium Complex/Ni(OH)2 Nanoparticle Hybrid. United States: N. p., 2015.
Web. doi:10.1038/srep18505.
Tang, Yu, Pattengale, Brian A., Ludwig, John M., Atifi, Abderrahman, Zinovev, Alexander V., Dong, Bin, Kong, Qingyu, Zuo, Xiaobing, Zhang, Xiaoyi, & Huang, Jier. Direct Observation of Photoinduced Charge Separation in Ruthenium Complex/Ni(OH)2 Nanoparticle Hybrid. United States. https://doi.org/10.1038/srep18505
Tang, Yu, Pattengale, Brian A., Ludwig, John M., Atifi, Abderrahman, Zinovev, Alexander V., Dong, Bin, Kong, Qingyu, Zuo, Xiaobing, Zhang, Xiaoyi, and Huang, Jier. 2015.
"Direct Observation of Photoinduced Charge Separation in Ruthenium Complex/Ni(OH)2 Nanoparticle Hybrid". United States. https://doi.org/10.1038/srep18505. https://www.osti.gov/servlets/purl/1236501.
@article{osti_1236501,
title = {Direct Observation of Photoinduced Charge Separation in Ruthenium Complex/Ni(OH)2 Nanoparticle Hybrid},
author = {Tang, Yu and Pattengale, Brian A. and Ludwig, John M. and Atifi, Abderrahman and Zinovev, Alexander V. and Dong, Bin and Kong, Qingyu and Zuo, Xiaobing and Zhang, Xiaoyi and Huang, Jier},
abstractNote = {We report that Ni(OH)2 have emerged as important functional materials for solar fuel conversion because of their potential as cost-effective bifunctional catalysts for both hydrogen and oxygen evolution reactions. However, their roles as photocatalysts in the photoinduced charge separation (CS) reactions remain unexplored. In this paper, we investigate the CS dynamics of a newly designed hybrid catalyst by integrating a Ru complex with Ni(OH)2 nanoparticles (NPs). Using time resolved X-ray absorption spectroscopy (XTA), we directly observed the formation of the reduced Ni metal site (~60 ps), unambiguously demonstrating CS process in the hybrid through ultrafast electron transfer from Ru complex to Ni(OH)2 NPs. Compared to the ultrafast CS process, the charge recombination in the hybrid is ultraslow (>>50 ns). These results not only suggest the possibility of developing Ni(OH)2 as solar fuel catalysts, but also represent the first time direct observation of efficient CS in a hybrid catalyst using XTA.},
doi = {10.1038/srep18505},
url = {https://www.osti.gov/biblio/1236501},
journal = {Scientific Reports},
issn = {2045-2322},
number = ,
volume = 5,
place = {United States},
year = {Thu Dec 17 00:00:00 EST 2015},
month = {Thu Dec 17 00:00:00 EST 2015}
}
Web of Science
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