An Electrostatically Self-Assembled Thin Film Made of Zn-Substituted Tungstoborate and Rhodamine B with Photoelectrochemical Properties.
J Nanosci Nanotechnol
; 16(4): 3674-8, 2016 Apr.
Article
in En
| MEDLINE
| ID: mdl-27451687
ABSTRACT
An electrostatically self-assembled multilayer thin film consisting of alternating layers of Keggin polyoxometalate of Zn-substituted tungstoborate (BW11Zn) and Rhodamine B (RhB) has successfully been prepared on a quartz and indium-tin oxide (ITO) glass substrate. The ultraviolet-visible (UV-vis) absorption spectra demonstrated that the electrostatically self-assembled film of (BW11Zn/RhB)n was uniformly deposited layer by layer, and the RhB molecules in the film formed the J-aggregation. The photoelectrochemical investigations showed that the films generated stable cathodic photocurrents that originated from RhB, and the maximal cathodic photocurrent density generated by an eight-layer film was 4.9 µA/cm2 while the film was irradiated with 100 mW/cm2 polychromatic light of 730 nm > λ > 325 nm at an applied potential of 0 V versus a saturated calomel electrode.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Electric Power Supplies
/
Rhodamines
/
Borates
/
Tungsten Compounds
/
Electrodes
/
Electroplating
/
Metal Nanoparticles
Language:
En
Journal:
J Nanosci Nanotechnol
Year:
2016
Document type:
Article