Organic phosphoric acid induced coral-like palladium network nanostructures for superior polyhydric alcohols electrocatalysis

Dong, Zemeng; Zhang, Wen; Wang, Jing; Xu, Guangrui; Wu, Zexing; Li, Guangjiu; Wang, Lei

doi:10.1016/j.jcis.2022.05.077

Cited by 3 publications

(1 citation statement)

References 58 publications

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“…PdCoZn NSs and D‐PdCoZn NSs showed type IV isotherms with H3‐type hysteresis loops. [ 16 ] The Brunauer–Emmett–Teller (BET) surface areas of PdCoZn NSs and D‐PdCoZn NSs are 24.2799 and 58.4928 m 2 g −1 , and the total pore volume is 0.1121 and 0.1338 cm 3 g −1 (Figure S9, Supporting Information), respectively, which should be attributed to the increase of pores on the surface of the nanosheet caused by the removal of Zn atoms, facilitating to the electron transfer and improving the catalytic activity. In addition, the surface chemical state and elemental composition of the samples were analyzed by X‐ray photoelectron spectroscopy (XPS) measurements.…”

Section: Resultsmentioning

confidence: 99%

Alkali Etching of Porous PdCoZn Nanosheets for Boosting C−C Bond Cleavage of Ethylene Glycol Oxidation

Xu,

Dong,

Zhao

et al. 2023

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Pd‐based electrocatalysts are the most effective catalysts for ethylene glycol oxidation reaction (EGOR), while the disadvantages of poor stability, low resistance to neutrophilic, and low catalytic activity seriously hamper the development of direct ethylene glycol fuel cells (DEGFCs). In this work, defect‐riched PdCoZn nanosheets (D‐PdCoZn NSs) with ultrathin 2D NSs and porous structures are fabricated through the solvothermal and alkali etching processes. Benefiting from the presence of defects and ultrathin 2D structures, D‐PdCoZn NSs demonstrate excellent electrocatalytic activity and good durability against EGOR in alkaline media. The mass activity and specific activity of D‐PdCoZn NSs for EGOR are 9.5 A mg−1 and 15.7 mA cm−2, respectively, which are higher than that of PdCoZn NSs, PdCo NSs, and Pd black. The D‐PdCoZn NSs still maintain satisfactory mass activity after long‐term durability tests. Meanwhile, in situ IR spectroscopy demonstrates that the presence of defects attenuated the adsorption of intermediates, which improves the selectivity of the C1 pathway with excellent anti‐CO poisoning performance. This work not only provides an effective synthetic strategy for the preparation of Pd‐based nanomaterials with defective structures but also indicates significant guidance for optimum C1 pathway selectivity of ethylene glycol and other challenging chemical transformations.

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Section: Resultsmentioning

confidence: 99%

Alkali Etching of Porous PdCoZn Nanosheets for Boosting C−C Bond Cleavage of Ethylene Glycol Oxidation

Xu,

Dong,

Zhao

et al. 2023

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Electronegativity Induced d‐Band Center Offset for Pt‐Rh Dual Sites in High‐Entropy Alloy Boosts Liquid Fuels Electrooxidation

Lv,

Lin,

Xue

et al. 2024

Advanced Energy Materials

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Investigating the catalytic behavior of the liquid fuels on well‐defined dual sites is crucial in understanding electrocatalytic reactions. Herein, concept holding bidirectional electronegativity dominant d‐band center regulation on Pt‐Rh dual sites is proposed to tailor the catalytic behaviors toward methanol oxidation reaction (MOR). The Pt‐Rh dual sites are engineered by introducing the low‐electronegativity Ga/Ni and high‐electronegativity W elements in PtRhGaNiW high‐entropy alloy (HEA), which can drive the electron cloud of Pt‐Rh dual sites redispersing over a wide orbit window. The optimized Pt‐Rh dual sites in PtRhGaNiW HEA nanowire achieve a high current density of 5.61 mA cm−2 toward MOR, which is 3.38 and 9.75 times than that of PtRh alloy (1.66 mA cm−2) and Pt/C (0.57 mA cm−2), as well as remarkably stability and COads poisonous resistance. The theoretical calculations further disclose that the redistribution of surface localized electron around Pt‐Rh dual sites can promote direct oxidation of ─OH, and accelerate the COads oxidation/removal. This work presents a breakthrough in designing advanced dual site electrocatalysts for complex catalytic reactions.

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Hydrophilic functionalization of rhodium metallene for saving-energy hydrogen production and sulfur recovery

Wang,

Yang,

Tian

et al. 2023

Chemical Engineering Journal

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Organic phosphoric acid induced coral-like palladium network nanostructures for superior polyhydric alcohols electrocatalysis

Cited by 3 publications

References 58 publications

Alkali Etching of Porous PdCoZn Nanosheets for Boosting C−C Bond Cleavage of Ethylene Glycol Oxidation

Alkali Etching of Porous PdCoZn Nanosheets for Boosting C−C Bond Cleavage of Ethylene Glycol Oxidation

Electronegativity Induced d‐Band Center Offset for Pt‐Rh Dual Sites in High‐Entropy Alloy Boosts Liquid Fuels Electrooxidation

Hydrophilic functionalization of rhodium metallene for saving-energy hydrogen production and sulfur recovery

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