TY - JOUR
T1 - Electrodeposited platinum microparticles in a sulfonate-polyaniline film for the electrosorption of methanol and sorbitol
AU - Yang, Chien Hsin
AU - Wen, Ten Chin
N1 - Funding Information:
The financial support of this work, by the National Science Council of the Republic of China under contract No. NSC 87-2218-E-168-006 and NSC 85-2214-E-006-004, is gratefully acknowledged.
PY - 1998/9/15
Y1 - 1998/9/15
N2 - The electrodeposition of platinum microparticles into a 2,5-diaminobenzenesulfonic acid-modified polyaniline (SPANI) film on IrO2 electrodes and its electrosorption for methanol and sorbitol, respectively, are described. Electrodeposited platinum microparticles under constant potential are dispersed in a three-dimensional array in porous SPANI films as evidenced by Auger electron spectroscopy (AES). Characterization of the Pt/SPANI/IrO2 electrodes by SEM shows that the deposition procedure yields spherical catalyst particles. X-ray photoelectron spectroscopy (XPS) results show that there is not significant variability in the binding energy of carbon and nitrogen, respectively, on SPANI chains for different Pt loadings. For catalyst loading of ca. 7 mg cm-2 deposited at -200 mV, the electrosorption coverages of sorbitol are always greater than that of methanol about 15%. In comparison to sorbitol, the readsorption of methanol on Pt catalyst site occurs significantly during electrosorption.
AB - The electrodeposition of platinum microparticles into a 2,5-diaminobenzenesulfonic acid-modified polyaniline (SPANI) film on IrO2 electrodes and its electrosorption for methanol and sorbitol, respectively, are described. Electrodeposited platinum microparticles under constant potential are dispersed in a three-dimensional array in porous SPANI films as evidenced by Auger electron spectroscopy (AES). Characterization of the Pt/SPANI/IrO2 electrodes by SEM shows that the deposition procedure yields spherical catalyst particles. X-ray photoelectron spectroscopy (XPS) results show that there is not significant variability in the binding energy of carbon and nitrogen, respectively, on SPANI chains for different Pt loadings. For catalyst loading of ca. 7 mg cm-2 deposited at -200 mV, the electrosorption coverages of sorbitol are always greater than that of methanol about 15%. In comparison to sorbitol, the readsorption of methanol on Pt catalyst site occurs significantly during electrosorption.
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U2 - 10.1016/S0013-4686(98)00113-3
DO - 10.1016/S0013-4686(98)00113-3
M3 - Article
AN - SCOPUS:0032312680
SN - 0013-4686
VL - 44
SP - 207
EP - 218
JO - Electrochimica Acta
JF - Electrochimica Acta
IS - 2-3
ER -