Journal
NANOSCALE
Volume 8, Issue 37, Pages 16694-16701Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nr04430a
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Funding
- National Science Foundation (NSF) [DMR-1104773]
- NSF MRSEC program [DMR-1120296]
- National Science Foundation
- National Institutes of Health/National Institute of General Medical Sciences under the NSF [DMR-0936384]
- European Union [310184]
- graduate school of chemistry at the University of Munster (GSC-MS)
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1409105] Funding Source: National Science Foundation
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In this work we synthesized well-ordered, Ta2O5 films with a 3D-interconnected gyroid mesopore architecture with large pore sizes beyond 30 nm and extended crystalline domains through self-assembly of tailor-made triblock-terpolymers. This has effectively eliminated diffusion limitations inherent to previously reported mesoporous photocatalysts and resulted in superior hydrogen evolution with apparent quantum yields of up to 4.6% in the absence of any cocatalyst. We further show that the injection barrier at the solid-liquid interface constitutes a key criterion for photocatalytic performance and can be modified by the choice of the carbon template. This work highlights pore and surface engineering as a promising tool towards high-performance mesoporous catalysts and electrodes for various energyrelated applications.
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