Probing the photoelectrochemical properties of hematite (α-Fe 2O3) electrodes using hydrogen peroxide as a hole scavenger

Hen Dotan; Kevin Sivula; Michael Grätzel; Avner Rothschild; Scott C. Warren

doi:https://doi.org/10.1039/c0ee00570c

Probing the photoelectrochemical properties of hematite (α-Fe ₂O₃) electrodes using hydrogen peroxide as a hole scavenger

Hen Dotan, Kevin Sivula, Michael Grätzel, Avner Rothschild, Scott C. Warren

Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

We study hematite (α-Fe₂O₃) photoelectrodes for water splitting by examining the fate of photogenerated holes. Using H ₂O₂ as an efficient hole scavenger, we collect all holes that arrive at the electrode/electrolyte interface. This provides the ability to distinguish between and quantify bulk and surface recombination processes involved in the photoelectrochemical oxidation of water. Below 1.0 V _RHE, electrolyte oxidation kinetics limits the performance but above 1.2 V_RHE bulk recombination becomes the limiting factor.

Original language	English
Pages (from-to)	958-964
Number of pages	7
Journal	Energy and Environmental Science
Volume	4
Issue number	3
DOIs	https://doi.org/10.1039/c0ee00570c
State	Published - Mar 2011

All Science Journal Classification (ASJC) codes

Pollution
Nuclear Energy and Engineering
Renewable Energy, Sustainability and the Environment
Environmental Chemistry

Access to Document

https://doi.org/10.1039/c0ee00570c

Cite this

@article{d77b7d5562cb43b08f7a3992f6341a36,

title = "Probing the photoelectrochemical properties of hematite (α-Fe 2O3) electrodes using hydrogen peroxide as a hole scavenger",

abstract = "We study hematite (α-Fe2O3) photoelectrodes for water splitting by examining the fate of photogenerated holes. Using H 2O2 as an efficient hole scavenger, we collect all holes that arrive at the electrode/electrolyte interface. This provides the ability to distinguish between and quantify bulk and surface recombination processes involved in the photoelectrochemical oxidation of water. Below 1.0 V RHE, electrolyte oxidation kinetics limits the performance but above 1.2 VRHE bulk recombination becomes the limiting factor.",

author = "Hen Dotan and Kevin Sivula and Michael Gr{\"a}tzel and Avner Rothschild and Warren, {Scott C.}",

year = "2011",

month = mar,

doi = "https://doi.org/10.1039/c0ee00570c",

language = "الإنجليزيّة",

volume = "4",

pages = "958--964",

journal = "Energy and Environmental Science",

issn = "1754-5692",

publisher = "Royal Society of Chemistry",

number = "3",

}

TY - JOUR

T1 - Probing the photoelectrochemical properties of hematite (α-Fe 2O3) electrodes using hydrogen peroxide as a hole scavenger

AU - Dotan, Hen

AU - Sivula, Kevin

AU - Grätzel, Michael

AU - Rothschild, Avner

AU - Warren, Scott C.

PY - 2011/3

Y1 - 2011/3

N2 - We study hematite (α-Fe2O3) photoelectrodes for water splitting by examining the fate of photogenerated holes. Using H 2O2 as an efficient hole scavenger, we collect all holes that arrive at the electrode/electrolyte interface. This provides the ability to distinguish between and quantify bulk and surface recombination processes involved in the photoelectrochemical oxidation of water. Below 1.0 V RHE, electrolyte oxidation kinetics limits the performance but above 1.2 VRHE bulk recombination becomes the limiting factor.

AB - We study hematite (α-Fe2O3) photoelectrodes for water splitting by examining the fate of photogenerated holes. Using H 2O2 as an efficient hole scavenger, we collect all holes that arrive at the electrode/electrolyte interface. This provides the ability to distinguish between and quantify bulk and surface recombination processes involved in the photoelectrochemical oxidation of water. Below 1.0 V RHE, electrolyte oxidation kinetics limits the performance but above 1.2 VRHE bulk recombination becomes the limiting factor.

UR - http://www.scopus.com/inward/record.url?scp=79952418480&partnerID=8YFLogxK

U2 - https://doi.org/10.1039/c0ee00570c

DO - https://doi.org/10.1039/c0ee00570c

M3 - مقالة

SN - 1754-5692

VL - 4

SP - 958

EP - 964

JO - Energy and Environmental Science

JF - Energy and Environmental Science

IS - 3

ER -

Probing the photoelectrochemical properties of hematite (α-Fe ₂O₃) electrodes using hydrogen peroxide as a hole scavenger

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this