TY - JOUR
T1 - Synthesis of a conductive Pt-Bi/CAG composite and its application for methyl orange decolorization
AU - Li, Lin
AU - Xiong, Jin Lei
AU - Wang, Luo Chun
AU - Xin-mei, Tian
AU - Lou, Zi Yang
AU - Huang, Shou Qiang
AU - Zhou, Zhen
N1 - Publisher Copyright:
© 2018 The Authors.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - To improve the electrochemical properties of electrodes and reduce their cost, a special multi-layer matrix was synthesized as an electrode material, which was composed of cement, active carbon (AC), and graphite with Pt-Bi co-deposition (Pt-Bi/CAG). Pt-Bi particles were found to be homogeneously distributed on the surface of the GAC electrode according to the SEM, EDS and XRD patterns, and the Pt-Bi/CAG-G5 electrode, which was made up of 5% graphite, 20% AC powder, 25% cement and 50% water, showed the best electrochemical performance in terms of specific capacitance, corrosion resistance and catalytic performance. The specific capacitance of the Pt-Bi/CAG-G5 electrode was 1.103 times larger than that of the Pt-Bi/CAG-G7.5 electrode, and the corrosion resistance was slightly lower than that of the Pt-Bi/CAG-G0 electrode. The current density was appreciably larger than those of all other electrodes, and it was 1.5 times larger than that of the Pt-Bi/CAG-G7.5 electrode. Next, the electrode was optimized based on methyl orange (MO) decoloration experiments, and approximately 76.62% of the decoloration rate was obtained by the Pt-Bi/CAG-G5 electrode, with a corresponding TOC removal rate of 54.80% in 180 min under a square wave potential (EU 1.5 V, EL -1.5 V). This composite electrode provides a cost-efficient application using electrochemical technologies (ETs) for the removal of refractory compounds.
AB - To improve the electrochemical properties of electrodes and reduce their cost, a special multi-layer matrix was synthesized as an electrode material, which was composed of cement, active carbon (AC), and graphite with Pt-Bi co-deposition (Pt-Bi/CAG). Pt-Bi particles were found to be homogeneously distributed on the surface of the GAC electrode according to the SEM, EDS and XRD patterns, and the Pt-Bi/CAG-G5 electrode, which was made up of 5% graphite, 20% AC powder, 25% cement and 50% water, showed the best electrochemical performance in terms of specific capacitance, corrosion resistance and catalytic performance. The specific capacitance of the Pt-Bi/CAG-G5 electrode was 1.103 times larger than that of the Pt-Bi/CAG-G7.5 electrode, and the corrosion resistance was slightly lower than that of the Pt-Bi/CAG-G0 electrode. The current density was appreciably larger than those of all other electrodes, and it was 1.5 times larger than that of the Pt-Bi/CAG-G7.5 electrode. Next, the electrode was optimized based on methyl orange (MO) decoloration experiments, and approximately 76.62% of the decoloration rate was obtained by the Pt-Bi/CAG-G5 electrode, with a corresponding TOC removal rate of 54.80% in 180 min under a square wave potential (EU 1.5 V, EL -1.5 V). This composite electrode provides a cost-efficient application using electrochemical technologies (ETs) for the removal of refractory compounds.
KW - Cement/AC/graphite electrode
KW - Cost-efficiency
KW - Electrochemical properties
KW - Multi-layer-matrix
UR - https://www.scopus.com/pages/publications/85055264756
U2 - 10.20964/2018.10.11
DO - 10.20964/2018.10.11
M3 - 文章
AN - SCOPUS:85055264756
SN - 1452-3981
VL - 13
SP - 9359
EP - 9373
JO - International Journal of Electrochemical Science
JF - International Journal of Electrochemical Science
IS - 10
ER -