@article{Peng2026, 
author = {Zi Han Peng and Xiao-Dan Guan and Yu-Nan Yi and Yao-Yue Yang},
title = {Electronic interaction of highly-dispersed Pd with defect-rich nickel disulfide nanoarrays for selective ethylene glycol-to-glycolate electroconversion},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {3},
pages = {94908315},
keywords = {palladium catalysts, nickel sulfide nanosheets, defect-rich substrate, glycolate, ethylene glycol oxidation reaction (EGOR)},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94908315},
doi = {10.26599/NR.2026.94908315},
abstract = {Palladium (Pd) is regarded as one of the most active catalysts for electrochemical ethylene glycol oxidation reaction (EGOR) to value-added glycolate, but its large-scale application is still restricted by limited catalytic effectiveness and exorbitant cost. Herein, we designed and synthesized the defect-rich nickel sulfide nanosheet arrays on nickel foam (Ni3−xCoxS2@NF) as the self-supported substrate to anchor well-dispersive Pd nanoparticles (Pd-Ni3−xCoxS2@NF) with its loading as low as approximately 3.03 wt.%, which is conducive to the exposure and utilization of the active Pd sites. The optimal Pd-Ni3−xCoxS2@NF electrocatalyst (1 cm2 working area) could achieve an efficient EGOR performance, showing a current density of 100 mA·cm−2 at 0.77 V vs. reversible hydrogen electrode (RHE), and 98.1% Faradaic efficiency of glycolate. Furthermore, the in-situ Raman spectra reveal that the interaction between Pd and Ni3−xCoxS2@NF significantly increases the adsorption of EG, and Ni3−xCoxS2@NF enhances the *OH adsorption capacity, thus further improving the EGOR activity and stability. This study provides an effective paradigm for enhancing the utilization and electrocatalytic performance of noble metallic catalysts, and also offers a deep insight into the interaction between the active sites and substrate.}
}