High-performance bioassisted nanophotocatalyst for hydrogen production

Shankar Balasubramanian; Peng Wang; Richard D. Schaller; Tijana Rajh; Elena A. Rozhkova

doi:10.1021/nl4016655

High-performance bioassisted nanophotocatalyst for hydrogen production

Shankar Balasubramanian, Peng Wang, Richard D. Schaller, Tijana Rajh, Elena A. Rozhkova

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

67 Scopus citations

Abstract

Nanophotocatalysis is one of the potentially efficient ways of capturing and storing solar energy. Biological energy systems that are intrinsically nanoscaled can be employed as building blocks for engineering nanobio-photocatalysts with tunable properties. Here, we report upon the application of light harvesting proton pump bacteriorhodopsin (bR) assembled on Pt/TiO₂ nanocatalyst for visible light-driven hydrogen generation. The hybrid system produces 5275 μmole of H₂ (μmole protein)^-1 h^-1 at pH 7 in the presence of methanol as a sacrificial electron donor under white light. Photoelectrochemical and transient absorption studies indicate efficient charge transfer between bR protein molecules and TiO₂ nanoparticles.

Original language	English (US)
Pages (from-to)	3365-3371
Number of pages	7
Journal	Nano Letters
Volume	13
Issue number	7
DOIs	https://doi.org/10.1021/nl4016655
State	Published - Jul 10 2013
Externally published	Yes

Keywords

bacteriorhodopsin
energy
Nanobiohybrid
protons photoreduction
Pt/TiO

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl4016655

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title = "High-performance bioassisted nanophotocatalyst for hydrogen production",

abstract = "Nanophotocatalysis is one of the potentially efficient ways of capturing and storing solar energy. Biological energy systems that are intrinsically nanoscaled can be employed as building blocks for engineering nanobio-photocatalysts with tunable properties. Here, we report upon the application of light harvesting proton pump bacteriorhodopsin (bR) assembled on Pt/TiO2 nanocatalyst for visible light-driven hydrogen generation. The hybrid system produces 5275 μmole of H2 (μmole protein)-1 h-1 at pH 7 in the presence of methanol as a sacrificial electron donor under white light. Photoelectrochemical and transient absorption studies indicate efficient charge transfer between bR protein molecules and TiO2 nanoparticles.",

keywords = "bacteriorhodopsin, energy, Nanobiohybrid, protons photoreduction, Pt/TiO",

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doi = "10.1021/nl4016655",

language = "English (US)",

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TY - JOUR

T1 - High-performance bioassisted nanophotocatalyst for hydrogen production

AU - Balasubramanian, Shankar

AU - Wang, Peng

AU - Schaller, Richard D.

AU - Rajh, Tijana

AU - Rozhkova, Elena A.

PY - 2013/7/10

Y1 - 2013/7/10

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AB - Nanophotocatalysis is one of the potentially efficient ways of capturing and storing solar energy. Biological energy systems that are intrinsically nanoscaled can be employed as building blocks for engineering nanobio-photocatalysts with tunable properties. Here, we report upon the application of light harvesting proton pump bacteriorhodopsin (bR) assembled on Pt/TiO2 nanocatalyst for visible light-driven hydrogen generation. The hybrid system produces 5275 μmole of H2 (μmole protein)-1 h-1 at pH 7 in the presence of methanol as a sacrificial electron donor under white light. Photoelectrochemical and transient absorption studies indicate efficient charge transfer between bR protein molecules and TiO2 nanoparticles.

KW - bacteriorhodopsin

KW - energy

KW - Nanobiohybrid

KW - protons photoreduction

KW - Pt/TiO

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High-performance bioassisted nanophotocatalyst for hydrogen production

Abstract

Keywords

ASJC Scopus subject areas

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