TY - JOUR
T1 - New strategy to prepare platinum salts by electrochemical methods and subsequent synthesis of platinum nanoparticles
AU - Mai, Fu Der
AU - Yu, Chung Chin
AU - Liu, Yu Chuan
AU - Hsu, Ting Chu
AU - Wu, Yi Hao
N1 - Funding Information:
The authors thank the National Science Council of the Republic of China ( NSC-97-2622-E-238-008-CC3 ) for its financial support.
PY - 2012/2
Y1 - 2012/2
N2 - As shown in the literature, most of Pt nanoparticles (NPs) were synthesized from precursors of commercial Pt salts. However, the impurity of the commercial Pt salts is a concerned issue. In this work, we report a new pathway based on electrochemical methods to prepare Pt-containing complexes with high purity in aqueous solutions from bulk Pt substrates. Experimental results indicate that Pt complexes with higher concentration can be obtained in 0.1 N HCl by using square-wave oxidation-reduction cycles (ORCs) under a frequency of 8 Hz with a step potential of 6.3 mV. Moreover, concentrations of other heavy metals of Hg and Cr in 65 ppm Pt complexes-containing solution are just 0.65 and 0.78 ppb, respectively. These Pt complexes were further reduced to Pt NPs by using NaBH 4 and poly(vinylpyrrolidone) (PVP) as reducing agent and stabilizer, respectively. The concentration and the particle size of synthesized Pt (1 1 1) NPs are ca. 60 ppm and smaller than 5 nm, respectively.
AB - As shown in the literature, most of Pt nanoparticles (NPs) were synthesized from precursors of commercial Pt salts. However, the impurity of the commercial Pt salts is a concerned issue. In this work, we report a new pathway based on electrochemical methods to prepare Pt-containing complexes with high purity in aqueous solutions from bulk Pt substrates. Experimental results indicate that Pt complexes with higher concentration can be obtained in 0.1 N HCl by using square-wave oxidation-reduction cycles (ORCs) under a frequency of 8 Hz with a step potential of 6.3 mV. Moreover, concentrations of other heavy metals of Hg and Cr in 65 ppm Pt complexes-containing solution are just 0.65 and 0.78 ppb, respectively. These Pt complexes were further reduced to Pt NPs by using NaBH 4 and poly(vinylpyrrolidone) (PVP) as reducing agent and stabilizer, respectively. The concentration and the particle size of synthesized Pt (1 1 1) NPs are ca. 60 ppm and smaller than 5 nm, respectively.
KW - A. Metals
KW - B. Chemical synthesis
KW - C. Photoelectron spectroscopy
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U2 - 10.1016/j.materresbull.2011.11.056
DO - 10.1016/j.materresbull.2011.11.056
M3 - Article
AN - SCOPUS:84855707882
SN - 0025-5408
VL - 47
SP - 167
EP - 171
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 2
ER -