Photo-electrocatalytic H2 evolution on poly(2,2′-bithiophene) at neutral pH

Chun Hin Ng; Orawan Winther-Jensen; Bartlomiej Kolodziejczyk; C. André Ohlin; Bjorn Winther Jensen

doi:10.1016/j.ijhydene.2014.09.003

Photo-electrocatalytic H₂ evolution on poly(2,2′-bithiophene) at neutral pH

Chun Hin Ng^*, Orawan Winther-Jensen, Bartlomiej Kolodziejczyk, C. André Ohlin, Bjorn Winther Jensen

^*Corresponding author for this work

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

14 Citations (Scopus)

Abstract

Vapour phase polymerised (VPP) polybithiophene (PBTh) on glassy carbon is revealed to be an efficient photo-electrocatalytic electrode for the hydrogen evolution reaction (HER). An onset potential of-0.03 V vs SCE for the HER is observed on illumination using visible light in 0.1 mol L^-1 phosphate buffer at pH 6.9, 600 mV lower in energy than E. Hydrogen evolution is confirmed using gas chromatography with a calculated faradaic efficiency of 34% when holding at a potential of-0.5 V. Importantly, this process occurs without platinum and under neutral aqueous conditions thus revealing a significant but overlooked application for PBTh: a potential low-cost cathode material for the splitting of water.

Original language	English
Pages (from-to)	18230-18234
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	32
DOIs	https://doi.org/10.1016/j.ijhydene.2014.09.003
Publication status	Published - 2014 Oct 31
Externally published	Yes

Keywords

Conducting polymer
Hydrogen
Photo-electrocatalyst
Polythiophene
Renewable energy

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2014.09.003

Cite this

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title = "Photo-electrocatalytic H2 evolution on poly(2,2′-bithiophene) at neutral pH",

abstract = "Vapour phase polymerised (VPP) polybithiophene (PBTh) on glassy carbon is revealed to be an efficient photo-electrocatalytic electrode for the hydrogen evolution reaction (HER). An onset potential of-0.03 V vs SCE for the HER is observed on illumination using visible light in 0.1 mol L-1 phosphate buffer at pH 6.9, 600 mV lower in energy than E. Hydrogen evolution is confirmed using gas chromatography with a calculated faradaic efficiency of 34% when holding at a potential of-0.5 V. Importantly, this process occurs without platinum and under neutral aqueous conditions thus revealing a significant but overlooked application for PBTh: a potential low-cost cathode material for the splitting of water.",

keywords = "Conducting polymer, Hydrogen, Photo-electrocatalyst, Polythiophene, Renewable energy",

author = "Ng, {Chun Hin} and Orawan Winther-Jensen and Bartlomiej Kolodziejczyk and Ohlin, {C. Andr{\'e}} and {Winther Jensen}, Bjorn",

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AU - Ng, Chun Hin

AU - Winther-Jensen, Orawan

AU - Kolodziejczyk, Bartlomiej

AU - Ohlin, C. André

AU - Winther Jensen, Bjorn

PY - 2014/10/31

Y1 - 2014/10/31

N2 - Vapour phase polymerised (VPP) polybithiophene (PBTh) on glassy carbon is revealed to be an efficient photo-electrocatalytic electrode for the hydrogen evolution reaction (HER). An onset potential of-0.03 V vs SCE for the HER is observed on illumination using visible light in 0.1 mol L-1 phosphate buffer at pH 6.9, 600 mV lower in energy than E. Hydrogen evolution is confirmed using gas chromatography with a calculated faradaic efficiency of 34% when holding at a potential of-0.5 V. Importantly, this process occurs without platinum and under neutral aqueous conditions thus revealing a significant but overlooked application for PBTh: a potential low-cost cathode material for the splitting of water.

AB - Vapour phase polymerised (VPP) polybithiophene (PBTh) on glassy carbon is revealed to be an efficient photo-electrocatalytic electrode for the hydrogen evolution reaction (HER). An onset potential of-0.03 V vs SCE for the HER is observed on illumination using visible light in 0.1 mol L-1 phosphate buffer at pH 6.9, 600 mV lower in energy than E. Hydrogen evolution is confirmed using gas chromatography with a calculated faradaic efficiency of 34% when holding at a potential of-0.5 V. Importantly, this process occurs without platinum and under neutral aqueous conditions thus revealing a significant but overlooked application for PBTh: a potential low-cost cathode material for the splitting of water.

KW - Conducting polymer

KW - Hydrogen

KW - Photo-electrocatalyst

KW - Polythiophene

KW - Renewable energy

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