Preparation and Electrocatalytic Performance of Fe-based Nanoporous Alloys by Dealloying
ZHENG Jibo1, LI Xue1, LU Gonghao2, NING Jialin1, LI Xining1
1 School of Minerals Science and Metallurgy, University of Science and Technology Liaoning, Anshan 114000; 2 School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114000
Abstract: Recently, nanoporous metal materials are the focus in catalysis and sensor fields. In this study, Fe-based amorphous alloy was chosen as a raw material, and the nanoporous materials with catalytic properties were prepared by dealloying. Fe60-Pd20P20 amorphous alloy ribbons with 1 mm in width and 25 μm in thickness were prepared by vacuum melting and rapid solidification, and the amorphous alloy ribbons were characterized by XRD, SEM and EDS. The Fe60Pd20P20 alloy was used as a starting alloy for potentiostatic dealloying in 1 mol/L H2SO4 solution at 25 ℃. The nanoporous amorphous alloy with an uniform 3-D interconnect structure was successfully prepared. The electrochemical tests showed that this nanoporous amorphous alloy exhibited high electrocatalytic activity for the decomposition of formic acid. Compared with the original amorphous alloy untreated by dealloying, the oxidation peak potential had a negative shift of 0.4 V in 0.5 mol/L H2SO4+0.5 mol/L HCOOH solution as well as the oxidation peak current density increased by 15 times. The nanoporous material has obvious catalytic activity for the decomposition of formic acid.
郑继波, 李雪, 卢公昊, 宁佳林, 黎曦宁. 脱合金法制备Fe基纳米多孔材料及其催化性能[J]. 材料导报, 2018, 32(16): 2828-2831.
ZHENG Jibo, LI Xue, LU Gonghao, NING Jialin, LI Xining. Preparation and Electrocatalytic Performance of Fe-based Nanoporous Alloys by Dealloying. Materials Reports, 2018, 32(16): 2828-2831.
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2018, Vol. 32 
