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Title: Modulating Hole Transport in Multilayered Photocathodes with Derivatized p-Type Nickel Oxide and Molecular Assemblies for Solar-Driven Water Splitting

Abstract

We report here a new photocathode composed of a bi-layered doped NiO film topped by a macro-mesoporous ITO (ioITO) layer with molecular assemblies attached to the ioITO surface. The NiO film containing a 2% K+ doped NiO inner layer and a 2% Cu2+ doped NiO outer layer provides sufficient driving force for hole transport after injection to NiO by the molecular assembly. The tri-layered oxide, NiK0.02O | NiCu0.02O | ioITO, sensitized by a ruthenium polypyridyl dye and functionalized with a nickel-based hydrogen evolution catalyst, outperforms its counterpart, NiO | NiO | ioITO, in photocatalytic hydrogen evolution from water over a period of several hours with a Faradaic yield of ~90%.

Authors:
 [1]; ORCiD logo [1];  [2];  [1];  [1];  [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
  2. Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352, United States
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1398213
Report Number(s):
PNNL-SA-125679
Journal ID: ISSN 1948-7185; KC0307010
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physical Chemistry Letters; Journal Volume: 8; Journal Issue: 18
Country of Publication:
United States
Language:
English

Citation Formats

Shan, Bing, Sherman, Benjamin D., Klug, Christina M., Nayak, Animesh, Marquard, Seth L., Liu, Qing, Bullock, R. Morris, and Meyer, Thomas J. Modulating Hole Transport in Multilayered Photocathodes with Derivatized p-Type Nickel Oxide and Molecular Assemblies for Solar-Driven Water Splitting. United States: N. p., 2017. Web. doi:10.1021/acs.jpclett.7b01911.
Shan, Bing, Sherman, Benjamin D., Klug, Christina M., Nayak, Animesh, Marquard, Seth L., Liu, Qing, Bullock, R. Morris, & Meyer, Thomas J. Modulating Hole Transport in Multilayered Photocathodes with Derivatized p-Type Nickel Oxide and Molecular Assemblies for Solar-Driven Water Splitting. United States. doi:10.1021/acs.jpclett.7b01911.
Shan, Bing, Sherman, Benjamin D., Klug, Christina M., Nayak, Animesh, Marquard, Seth L., Liu, Qing, Bullock, R. Morris, and Meyer, Thomas J. 2017. "Modulating Hole Transport in Multilayered Photocathodes with Derivatized p-Type Nickel Oxide and Molecular Assemblies for Solar-Driven Water Splitting". United States. doi:10.1021/acs.jpclett.7b01911.
@article{osti_1398213,
title = {Modulating Hole Transport in Multilayered Photocathodes with Derivatized p-Type Nickel Oxide and Molecular Assemblies for Solar-Driven Water Splitting},
author = {Shan, Bing and Sherman, Benjamin D. and Klug, Christina M. and Nayak, Animesh and Marquard, Seth L. and Liu, Qing and Bullock, R. Morris and Meyer, Thomas J.},
abstractNote = {We report here a new photocathode composed of a bi-layered doped NiO film topped by a macro-mesoporous ITO (ioITO) layer with molecular assemblies attached to the ioITO surface. The NiO film containing a 2% K+ doped NiO inner layer and a 2% Cu2+ doped NiO outer layer provides sufficient driving force for hole transport after injection to NiO by the molecular assembly. The tri-layered oxide, NiK0.02O | NiCu0.02O | ioITO, sensitized by a ruthenium polypyridyl dye and functionalized with a nickel-based hydrogen evolution catalyst, outperforms its counterpart, NiO | NiO | ioITO, in photocatalytic hydrogen evolution from water over a period of several hours with a Faradaic yield of ~90%.},
doi = {10.1021/acs.jpclett.7b01911},
journal = {Journal of Physical Chemistry Letters},
number = 18,
volume = 8,
place = {United States},
year = 2017,
month = 8
}