Journal
ACS ENERGY LETTERS
Volume 3, Issue 5, Pages 1159-1164Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.8b00488
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Funding
- National Key R&D Program of China [2017YFA0204804]
- National Natural Science Foundation of China [21573219]
- DICP [DICP ZZBS201704]
- Young Thousand Talents Program of China
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Organic-inorganic hybrid perovskites have been extensively investigated for solar-to-electricity transformation because of their excellent optoelectronic properties. However, these materials have been rarely pursued as photocatalysts for solar-to-fuel conversion because of their intolerance to water and lack of efficient strategies to promote charge transportation in the nanoscale domain. Herein, Pt/TiO2 nanoparticles, which act as temporary reservoirs for accommodating methylammonium lead iodide (MAPbI(3)), were hybridized with MAPbI(3), creating dynamically existing electron-transporting channels between the two components. As a consequence, the charge transportation efficiency for MAPbI(3) nanoparticles was drastically enhanced and the rate of photocatalytic hydrogen evolution from HI splitting was increased by ca. 89 times compared with that of Pt/MAPbI(3). An apparent quantum efficiency of ca. 70% for H-2 evolution at 420 nm and a solar-to-chemical conversion efficiency of ca. 0.86% were obtained.
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