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Solar fuel production: Strategies and new opportunities with nanostructures

Paper ID Volume ID Publish Year Pages File Format Full-Text
32069 44896 2015 19 PDF Available
Title
Solar fuel production: Strategies and new opportunities with nanostructures
Abstract

•The main electron–hole recombination pathways of a photoelectrode are pointed out.•Strategies are summarized to improve solar-to-fuel conversion efficiency.•Nanostructuring methods are summarized to enhance the durability of photoelectrode.

SummaryThe photocatalytic and photoelectrochemical reduction of water or CO2 is an intriguing approach to producing sustainable solar fuels, and has attracted growing and intense interest. Nanostructuring of photocatalysts and photoelectrodes has been proven to be a strong strategy to dramatically improve overall solar-to-fuel conversion efficiencies. Another technological barrier for the practical implementation of solar fuel production is long-term material durability, which has recently been well addressed through use of conformal coatings of protective layers onto the narrow band-gap semiconductors that are suitable for efficient solar-to-fuel conversions but photoelectrochemically unstable. These significant progresses may lead us to the practical implementation of solar fuel production. In this review, we will focus on these exciting progresses achieved using nanostructuring strategies, specifically regarding how the nanostructure influences the charge transport and separation; special attention will be paid to how a nanoscale coating (overlayer) passivates the surface states, thereby reducing the surface electron–hole recombination, and how a nanoscale coating (protective layer) prevents the photocorrosion or photopassivation of the semiconductors with optimal band gaps. We hope that the design strategies using these nanostructures will offer new and greater opportunities for efficient solar fuel production to existing photocatalytic and photoelectrochemical systems.

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Keywords
Photocatalysts; Photoelectrodes; Water splitting; Nanostructure; CO2 photoreduction; Atomic layer deposition
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Publisher
Database: Elsevier - ScienceDirect
Journal: - Volume 10, Issue 4, August 2015, Pages 468–486
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us