钯
镍
钴
双金属片
吸附
电极
化学
无机化学
可逆氢电极
材料科学
化学工程
催化作用
工作电极
有机化学
电化学
冶金
物理化学
工程类
作者
Junjing Li,Yu Wang,Bin Zhao,Jing Ding,Jun Zhang,Menghua Yin,Zhaohui Zhang,Shumin Ma,Yaqian Liu,Zilin Tan,Hongwei Zhang,Liang Wang,Dionysios D. Dionysiou
标识
DOI:10.1016/j.apcatb.2023.122754
摘要
In this work, a nickel-cobalt bimetallic organic framework (NiCo-MOF) was introduced as an intermediate layer to synthesize a Pd/NiCo-MOF/Nickel foam composite electrode, which was applied for electrocatalytic hydrodechlorination (ECH) of chlorinated pharmaceuticals and personal care products (PPCPs). The introduction of the NiCo-MOF structure dramatically improved the catalytic activity compared with the common Pd/Nickel foam electrode. Combined with transmission electron microscope and X-ray absorption fine structure analysis, catalyst on Pd/NiCo-MOF/Nickel foam surface had smaller particle size. The removal of the Pd/NiCo-MOF/Nickel foam electrode for chloramphenicol (CAP) reached more than 95 % at 40 min, while the removal of the Pd/Nickel foam electrode was only approximately 55 %. In this study, the active atomic hydrogen (H*) adsorbed on the Pd and NiCo-MOF structures is the critical active species to remove chlorinated PPCPs by Pd/NiCo-MOF/Nickel foam electrode. Density functional theory (DFT) was used to calculate and investigate the adsorption strength of the composite electrode structure for CAP, the product and H*. This work provided a new method to achieve higher catalytic performance and reactivity operability and longevity of catalytic materials through the synergism of a NiCo-MOF interlayer with Pd particles.
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