Dispersed conductive polymer nanoparticles on graphitic carbon nitride for enhanced solar-driven hydrogen evolution from pure water

Developing new methods to improve the photocatalytic activity of graphitic carbon nitride (g-C₃N₄) for hydrogen (H₂) evolution has attracted intensive research interests. Here, we report that the g-C₃N₄ exhibits photocatalytic activity for H₂ evolution from pure water. And, the activity is dramatica...

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Published inNanoscale Vol. 5; no. 19; pp. 9150 - 9155
Main Authors Sui, Yi, Liu, Jinghai, Zhang, Yuewei, Tian, Xike, Chen, Wei
Format Journal Article
LanguageEnglish
Published England 07.10.2013
Subjects
Carbon nitride
Catalysis
Dispersion
Electron Transport
Electrons
Evolution
Hydrogen - chemistry
Nanocomposites
Nanomaterials
Nanoparticles
Nanoparticles - chemistry
Nanostructure
Nitriles - chemistry
Photocatalysis
Polymers - chemistry
Pyrroles - chemistry
Sunlight
Water - chemistry
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Summary:Developing new methods to improve the photocatalytic activity of graphitic carbon nitride (g-C₃N₄) for hydrogen (H₂) evolution has attracted intensive research interests. Here, we report that the g-C₃N₄ exhibits photocatalytic activity for H₂ evolution from pure water. And, the activity is dramatically improved by loading highly dispersed conductive polymer nanoparticles. The H₂ evolution rate increases up to 50 times for g-C₃N₄ with 1.5 wt% polypyrrole (PPy) nanoparticles on the surface. The reaction proceeding in a pure water system excludes the need for sacrificial agents. The role of the highly conductive PPy in enhancing H₂ evolution is as a surface junction to increase the number of photoinduced electrons, and to facilitate electron transfer to the interface.
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ISSN:2040-3364
2040-3372
DOI:10.1039/c3nr02413j