Rh nanoroses for isopropanol oxidation reaction

Xing, Shi-Hui; Liu, Zhao; Xue, Qi; Yin, Shiwei; Li, Fumin; Cai, Weiwei; Li, Shu-Ni; Chen, Pei; Jin, Pujun; Yao, Hong-Chang; Chen, Yu

doi:10.1016/j.apcatb.2019.118082

Cited by 47 publications

(34 citation statements)

References 74 publications

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“…e results enable us to conclude that this catalyst presents basic sites and leads a predisposition to form acetone, a result that is confirmed in the bibliography [12]. e power of ZnO catalytic can be explained by the elevated capacity of transporting oxygen, as well as shifting easily between its reduced and oxidized form (the mechanism of Mars-van Krevelen) [2,34,35]. ese curves behave the same way regardless of the temperature.…”

Section: Reaction Mechanism: Variation Of Tt G Tt Act and Tt Co2supporting

confidence: 63%

Total Oxidation of Isopropanol in Its Liquid Phase, at a Low Temperature in the Presence of Prepared and Characterized Zinc Oxide

Dehmani

Amhoud

Abouarnadasse

2021

International Journal of Analytical Chemistry

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The complete oxidation of isopropanol in its liquid phase at a low temperature was studied in the presence of zinc oxide (ZnO). This solid was prepared with the precipitation method. Structural analysis (infrared in Fourier transform and diffraction of X-rays) and textured (adsorption/desorption of N2) were conducted for the wurtzite structure results, an IV type isotherm with a type H3 hysteresis. This solid presents a good catalytic activity against the complete oxidation of isopropanol, a constant of selectivity equal to 1; however, the studied temperatures were 40, 60, and 80°C. In addition, a kinetic study of the oxidation was performed and showed that the reaction follows a successive mechanism isopropanol-acetone-carbon dioxide. The low value of the apparent energy of the activation of this solid confirms the high value of the initial rate of the catalytic oxidation reaction of isopropanol in the temperature range studied.

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Section: Reaction Mechanism: Variation Of Tt G Tt Act and Tt Co2supporting

confidence: 63%

Total Oxidation of Isopropanol in Its Liquid Phase, at a Low Temperature in the Presence of Prepared and Characterized Zinc Oxide

Dehmani

Amhoud

Abouarnadasse

2021

International Journal of Analytical Chemistry

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“…Membrane electrode assembly was prepared according to previous works. [ 10,16 ] The electrocatalyst slurry was prepared using the following weight ratio: electrocatalyst/isopropanol/water/Nafion (5 wt%) solution of 1/12/12/11. The electrocatalyst slurry was treated by ultrasonic for 2 h and then sprayed onto one side of a carbon paper (TGP‐H‐060, Troay) with an area of ≈5 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

Porous Pd‐PdO Nanotubes for Methanol Electrooxidation

Wang

Huang

et al. 2020

Adv Funct Materials

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162

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Palladium (Pd) nanostructures are highly active non-platinum anodic electrocatalysts in alkaline direct methanol fuel cells (ADMFCs) and their electrocatalytic performance relies highly on their morphology and composition. Herein, a facile high-temperature pyrolysis method to synthesize high-quality Pd-palladium oxide (PdO) porous nanotubes (PNTs) by using Pd(II)-dimethylglyoxime complex (Pd(II)-DMG) nanorods as a selftemplate is reported. The chemical component of pyrolysis products highly correlates with pyrolysis temperature. The electrochemical measurements and density functional theory calculations show the existence of PdO enhances the electroactivity of metallic Pd for both methanol oxidation reaction (MOR) and carbon monoxide oxidation reaction in alkaline media. Benefiting from its one-dimensionally porous architecture and evident synergistic effect between PdO and Pd (e.g., electronic effect and bifunctional mechanism), Pd-PdO PNTs achieve a 3.7-fold mass activity enhancement and improved durability for MOR compared to commercial Pd nanocrystals. Considering the simple synthesis, excellent activity, and long-term stability, Pd-PdO PNTs may be highly promising anodic electrocatalysts in ADMFCs.optimal chemical component and structural advantage, Pd-PdO PNTs with optimal component revealed eminent electrocatalytic activity and durability for MOR in alkaline medium.

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“…Additionally, other non-noble metal-based materials have been investigated, such as rhodium, which shows catalytic properties towards isopropanol electrooxidation on its own, especially when the obtained material is on the nanoscale, like rhodium nanoroses presented in Figure 9 , and can be characterized by a high ECSA [ 204 ], or titanium dioxide, which shows photocatalytic properties [ 205 ]. After doping TiO 2 with transition metals, such as copper, and the final system shows electrocatalytic and photocatalytic properties towards isopropanol oxidation [ 205 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

“… Low- ( C ) and high-magnification ( D ) SEM images of rhodium nanoroses, reprinted with permission of Elsevier [ 204 ]. …”

Section: Figurementioning

confidence: 99%

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Wala

Simka

2021

Molecules

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The growing climate crisis inspires one of the greatest challenges of the 21st century—developing novel power sources. One of the concepts that offer clean, non-fossil electricity production is fuel cells, especially when the role of fuel is played by simple organic molecules, such as low molecular weight alcohols. The greatest drawback of this technology is the lack of electrocatalytic materials that would enhance reaction kinetics and good stability under process conditions. Currently, electrodes for direct alcohol fuel cells (DAFCs) are mainly based on platinum, which not only provides a poor reaction rate but also readily deactivates because of poisoning by reaction products. Because of these disadvantages, many researchers have focused on developing novel electrode materials with electrocatalytic properties towards the oxidation of simple alcohols, such as methanol, ethanol, ethylene glycol or propanol. This paper presents the development of electrode materials and addresses future challenges that still need to be overcome before direct alcohol fuel cells can be commercialized.

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Rh nanoroses for isopropanol oxidation reaction

Cited by 47 publications

References 74 publications

Total Oxidation of Isopropanol in Its Liquid Phase, at a Low Temperature in the Presence of Prepared and Characterized Zinc Oxide

Total Oxidation of Isopropanol in Its Liquid Phase, at a Low Temperature in the Presence of Prepared and Characterized Zinc Oxide

Porous Pd‐PdO Nanotubes for Methanol Electrooxidation

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

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