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Title: A photochemical diode artificial photosynthesis system for unassisted high efficiency overall pure water splitting

Abstract

The conversion of solar energy into chemical fuels can potentially address many of the energy and environment related challenges we face today. In this study, we have demonstrated a photochemical diode artificial photosynthesis system that can enable efficient, unassisted overall pure water splitting without using any sacrificial reagent. By precisely controlling charge carrier flow at the nanoscale, the wafer-level photochemical diode arrays exhibited solar-to-hydrogen efficiency ~3.3% in neutral (pH ~ 7.0) overall water splitting reaction. In part of the visible spectrum (400–485 nm), the energy conversion efficiency and apparent quantum yield reaches ~8.75% and ~20%, respectively, which are the highest values ever reported for one-step visible-light driven photocatalytic overall pure water splitting. The effective manipulation and control of charge carrier flow in nanostructured photocatalysts provides critical insight in achieving high efficiency artificial photosynthesis, including the efficient and selective reduction of CO 2 to hydrocarbon fuels.

Authors:
 [1];  [2];  [1];  [3]
  1. McGill Univ., Montreal, QC (Canada)
  2. Center of Excellence in Transportation Electrification and Energy Storage (CETEES), Varennes, QC (United States)
  3. Univ. of Michigan, Ann Arbor, MI (United States); McGill Univ., Montreal, QC (Canada)
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Office (EE-3F)
OSTI Identifier:
1500016
Grant/Contract Number:  
EE0008086
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Chowdhury, Faqrul A., Trudeau, Michel L., Guo, Hong, and Mi, Zetian. A photochemical diode artificial photosynthesis system for unassisted high efficiency overall pure water splitting. United States: N. p., 2018. Web. doi:10.1038/s41467-018-04067-1.
Chowdhury, Faqrul A., Trudeau, Michel L., Guo, Hong, & Mi, Zetian. A photochemical diode artificial photosynthesis system for unassisted high efficiency overall pure water splitting. United States. doi:10.1038/s41467-018-04067-1.
Chowdhury, Faqrul A., Trudeau, Michel L., Guo, Hong, and Mi, Zetian. Fri . "A photochemical diode artificial photosynthesis system for unassisted high efficiency overall pure water splitting". United States. doi:10.1038/s41467-018-04067-1. https://www.osti.gov/servlets/purl/1500016.
@article{osti_1500016,
title = {A photochemical diode artificial photosynthesis system for unassisted high efficiency overall pure water splitting},
author = {Chowdhury, Faqrul A. and Trudeau, Michel L. and Guo, Hong and Mi, Zetian},
abstractNote = {The conversion of solar energy into chemical fuels can potentially address many of the energy and environment related challenges we face today. In this study, we have demonstrated a photochemical diode artificial photosynthesis system that can enable efficient, unassisted overall pure water splitting without using any sacrificial reagent. By precisely controlling charge carrier flow at the nanoscale, the wafer-level photochemical diode arrays exhibited solar-to-hydrogen efficiency ~3.3% in neutral (pH ~ 7.0) overall water splitting reaction. In part of the visible spectrum (400–485 nm), the energy conversion efficiency and apparent quantum yield reaches ~8.75% and ~20%, respectively, which are the highest values ever reported for one-step visible-light driven photocatalytic overall pure water splitting. The effective manipulation and control of charge carrier flow in nanostructured photocatalysts provides critical insight in achieving high efficiency artificial photosynthesis, including the efficient and selective reduction of CO2 to hydrocarbon fuels.},
doi = {10.1038/s41467-018-04067-1},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {4}
}

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Works referenced in this record:

Powering the planet: Chemical challenges in solar energy utilization
journal, October 2006

  • Lewis, N. S.; Nocera, D. G.
  • Proceedings of the National Academy of Sciences, Vol. 103, Issue 43, p. 15729-15735
  • DOI: 10.1073/pnas.0603395103

Limiting and realizable efficiencies of solar photolysis of water
journal, August 1985

  • Bolton, James R.; Strickler, Stewart J.; Connolly, John S.
  • Nature, Vol. 316, Issue 6028, p. 495-500
  • DOI: 10.1038/316495a0

Comparing Photosynthetic and Photovoltaic Efficiencies and Recognizing the Potential for Improvement
journal, May 2011

  • Blankenship, R. E.; Tiede, D. M.; Barber, J.
  • Science, Vol. 332, Issue 6031, p. 805-809
  • DOI: 10.1126/science.1200165