Journal
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
Volume 35, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.201800155
Keywords
anodization; graphitic carbon nitride nanodots; photoelectrochemical electrodes; SnO2
Funding
- Research Grants Council of Hong Kong [9042231 (CityU 11302515)]
- City University of Hong Kong [9667125, 7004643]
- Innovation and Technology Commission of HKSAR through Hong Kong Branch of National Precious Metals Material Engineering Research Center
- Centre for Functional Photonics at the City University of Hong Kong
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A novel type of high-performance photoelectrochemical (PEC) electrode is conveniently fabricated. Graphitic carbon nitride (g-C3N4) nanodots are homogeneously deposited inside an amorphous host of mesoporous 1D SnO2 via pulsed electrophoresis, followed by extremely facile water-soaking treatment to crystallize the amorphous SnO2. The g-C3N4/SnO2 nanocomposite thus obtained readily serves as a PEC electrode that is able to extend the light absorption to the visible region, delivering a photocurrent density of 1.8 mA cm(-2) at 0.2 V (vs Ag/AgCl) under simulated solar light irradiation, which is approximate to 1.5 times higher than that of pristine SnO2 host. The facile and mild electrophoresis/water-soaking method reported here can be extended to fabricate other high performance photoelectrode systems from various anodic mesoporous materials and nanoparticles.
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