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- Title
Facile electrochemical growth of nanostructured copper phthalocyanine thin film via simultaneous anodic oxidation of copper and dilithium phthalocyanine for photoelectrochemical hydrogen evolution.
- Authors
Vishwanath, R.; Kandaiah, Sakthivel
- Abstract
We present a novel electrochemical approach to grow copper phthalocyanine (CuPc) thin-film photoelectrodes through anodic oxidation of copper and dilithium phthalocyanine (LiPc). This circumvents the challenges associated with the electrochemical processing of unsubstituted CuPc from solution. The potentiostatic co-electrooxidation reaction at the heterogeneous interface favors the growth of CuPc thin film. The surface morphology of thin film exhibits nanorod-like features. UV-Vis, grazing angle Fourier transform infrared (FTIR), and grazing angle X-ray diffraction patterns reveal that the nanocrystalline phase corresponds only to α-CuPc and no admixture of other polymorphs. Photocurrent measurement shows a stable photoresponse in neutral medium. The photoelectrochemical hydrogen evolution on p-type CuPc coated copper photocathode shows an enhanced activity over bare copper and indium tin oxide (ITO) electrodeposited with CuPc and monolithium phthalocyanine radical (LiPc) thin films.
- Subjects
ELECTROCHEMICAL analysis; NANOSTRUCTURED materials; HYDROGEN evolution reactions; PHOTOCATHODES; PHTHALOCYANINES
- Publication
Journal of Solid State Electrochemistry, 2016, Vol 20, Issue 3, p767
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-015-3107-1