The enhanced role of surface amination on the catalytic performance of polyacrylonitrile supported palladium nanoparticles in hydrogen generation from formic acid

The recent revolution in nanoscience and global energy demand have motivated research in liquid fuel cells (LFCs) due to their enhanced efficiency, moving flexibility, and reduced contamination. In line with this advancement, a glassy carbon (GC) electrode was modified with platinum (PtNPs) and gold (AuNPs) nanoparticles to fabricate a nanosized anode for formic acid, methanol, and ethylene glycol electrooxidation (abbreviated, respectively, to FAO, MO, and EGO), of the key anodic reactions of LFCs. The deposition sequence of the catalyst’s layers was important where the Au/Pt/GC electrode (in which PtNPs were directly deposited onto the GC surface followed by AuNPs—surface coverage ≈ 32%) exhibited the best catalytic performance. The catalytic performance of the Au/Pt/GC anode excelled (at least threefold) its value obtained at the Pt/GC anode with regard to FAO and EGO, if the oxidation peak currents were compared. This enhancement got reduced to 1.4 times in the case of MO, but the large decrease (− 220 mV) in the onset potential of MO provided compensation. The role of AuNPs in the Au/Pt/GC catalyst was principal in boosting its catalytic performance as it immunized the underlying PtNPs against CO poisoning which is associated with the release of CO as an intermediate during the oxidation. Interestingly, AuNPs succeeded in interrupting the contiguity of the Pt surface sites required for CO adsorption during FAO, MO, and EGO and, thus, presage preventing the deterioration of the catalytic performance of their corresponding LFCs.

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Size-dependent catalytic activity over carbon-supported palladium nanoparticles in dehydrogenation of formic acid

Journal of Catalysis ◽

10.1016/j.jcat.2017.06.007 ◽

2017 ◽

Vol 352 ◽

pp. 371-381 ◽

Cited By ~ 53

Author(s):

Junjie Li ◽

Wei Chen ◽

Han Zhao ◽

Xusheng Zheng ◽

Lihui Wu ◽

...

Keyword(s):

Catalytic Activity ◽

Formic Acid ◽

Palladium Nanoparticles ◽

Size Dependent ◽

Supported Palladium

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Surfactant-Free Synthesis of Carbon-Supported Palladium Nanoparticles and Size-Dependent Hydrogen Production from Formic Acid–Formate Solution

ACS Applied Materials & Interfaces ◽

10.1021/acsami.7b08441 ◽

2017 ◽

Vol 9 (29) ◽

pp. 24678-24687 ◽

Cited By ~ 45

Author(s):

Shuo Zhang ◽

Bei Jiang ◽

Kun Jiang ◽

Wen-Bin Cai

Keyword(s):

Hydrogen Production ◽

Formic Acid ◽

Palladium Nanoparticles ◽

Size Dependent ◽

Supported Palladium ◽

Formate Solution

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Palladium Nanoparticles Electrodeposition onto Glassy Carbon from a Deep Eutectic Solvent at 298 K and Their Catalytic Performance toward Formic Acid Oxidation

Journal of The Electrochemical Society ◽

10.1149/2.0251901jes ◽

2018 ◽

Vol 166 (1) ◽

pp. D3205-D3211 ◽

Cited By ~ 10

Author(s):

I. E. Espino-López ◽

M. Romero-Romo ◽

M. G. Montes de Oca-Yemha ◽

P. Morales-Gil ◽

M. T. Ramírez-Silva ◽

...

Keyword(s):

Formic Acid ◽

Glassy Carbon ◽

Palladium Nanoparticles ◽

Deep Eutectic Solvent ◽

Formic Acid Oxidation ◽

Catalytic Performance ◽

Acid Oxidation

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Polystyrene supported palladium nanoparticles catalyzed cinnamic acid synthesis using maleic anhydride as a substitute for acrylic acid

Catalysis Science & Technology ◽

10.1039/c7cy01126a ◽

2017 ◽

Vol 7 (17) ◽

pp. 3692-3697 ◽

Cited By ~ 8

Author(s):

Vandna Thakur ◽

Sandeep Kumar ◽

Pralay Das

Keyword(s):

Maleic Anhydride ◽

Acrylic Acid ◽

Cinnamic Acid ◽

Palladium Nanoparticles ◽

Acid Synthesis ◽

Supported Palladium

Maleic anhydride as a substitute for acrylic acid for cinnamic acid synthesis was explored elaborating the combined role of the support and the catalyst.

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