Electrocatalytic Oxidation of Methanol and Ethanol by Carbon Ceramic Electrode Modified with Ni/Al LDH Nanoparticles

Karim‐Nezhad, Ghasem; Pashazadeh, Sara; Pashazadeh, Ali

doi:10.1016/s1872-2067(11)60452-x

Cited by 31 publications

(14 citation statements)

References 33 publications

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“…It is also interesting to compare the Tafel slopes obtained for the nickel-based catalysts in our work with other previously reported values. Many previous works using nickel-based catalysts [52][53][54] have reported higher Tafel slopes, ranging from 120 to 160 mV dec −1 in most cases. However, the catalyst materials were usually synthesized by thermal processes at high temperatures or pretreated by electrochemical cycling, which usually leads to the formation of the more thermodynamically favorable and crystalline structure, β-Ni(OH) 2 .…”

Section: Effects Of the Metallic Ratio On The Catalytic Activity And mentioning

confidence: 79%

Effects of Incorporated Iron or Cobalt on the Ethanol Oxidation Activity of Nickel (Oxy)Hydroxides in Alkaline Media

2019

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Nickel (oxy)hydroxides (NiO x H y) are promising cost-effective materials that exhibit a fair catalytic activity for the ethanol oxidation reaction (EOR) and could be used for sustainable energy conversion. Doping the NiO x H y structure with other metals could lead to enhanced catalytic properties but more research needs to be done to understand the role of the doping metal on the EOR. We prepared NiO x H y films doped with Fe or Co with different metallic ratios by electrodeposition and evaluated the EOR. We found a positive and negative effect on the catalytic activity after the incorporation of Co and Fe, respectively. Our results suggest that Ni atoms are the active sites for the EOR since Tafel slopes were similar on the binary and pristine nickel (oxy)hydroxides and that the formal potential of the Ni(II)/Ni(III) redox couple is a good descriptor for the EOR activity. This work also highlights the importance of controlled metal doping on catalysts and may help in the design and development of improved materials for the EOR.

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Section: Effects Of the Metallic Ratio On The Catalytic Activity And mentioning

confidence: 79%

Effects of Incorporated Iron or Cobalt on the Ethanol Oxidation Activity of Nickel (Oxy)Hydroxides in Alkaline Media

2019

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“…[ 117 ] NiAl–LDH nanoparticles modified carbon ceramic electrode was used for methanol oxidation. [ 118 ] Zedan and co‐workers also reported nanohybrid layered TM LDH nanosheets as efficient electrocatalysts for methanol oxidation. [ 119 ] The high electrocatalytic performance was ascribed to the reversible one‐electron redox couple nature of Ni and the porous structure that provided an access for reactive species to the active sites.…”

Section: Electrocatalytic Application Of Transition‐metal‐based Ldh Mmentioning

confidence: 99%

Recent Advance of Transition‐Metal‐Based Layered Double Hydroxide Nanosheets: Synthesis, Properties, Modification, and Electrocatalytic Applications

Liu

Lai

et al. 2021

Advanced Energy Materials

176

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Nowadays, to alleviate the growing pressure of energy shortages and environmental pollution, electrochemical energy conversion is seen as a fossil‐free, secondary pollution‐free, and highly efficiency pathway. Electrocatalysts, as the “heart” of the electrochemical conversion process, play a key role in accelerating reaction rates and promoting efficiency. Transition‐metal‐based layered double hydroxides (TM LDHs), one of the famous electrocatalysts, show unique 2D supermolecular‐stratified structure, excellent electronic properties, and their raw materials are easily available. In this review, electrocatalysis‐related properties of TM LDHs and the state‐of‐the‐art synthesis methods of TM LDH‐based electrocatalysts are summarized. Modifications for promoting the development of TM LDH‐based electrocatalysts are included, such as carbon materials modification, defect engineering, and noble metal loading. Then, the application of TM LDH nanosheets in the field of electrocatalysis is reviewed in detail. Finally, recent challenges, ongoing improvements, and future expectations for TM LDH nanosheets are presented.

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“…In particular, the LDH containing transition metal ions in the lattice of theirs octahedral layer with redox properties, such as Cu, Ni and Fe, have been widely synthesized and exploited in many practical catalytic applications [19,28]. Ni-Al LDH not only possess all the advantages of common LDH but also have the electrochemical activity because of the presence of a reversible one-electron redox couple, Ni(III)/Ni(II), which allows their application in electrochemistry area [29][30][31]. Electrochemical applications of LDH to electrochemical sensors, electrocatalysts, dye-sensitized solar cells and super capacitors were presented [32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Habibi

Ghaderi

2016

Bull. Chem. React. Eng. Catal.

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In this study, Ni-Al layered double hydroxide (LDH)-Pt nanoparticles (PtNPs) as an inorganic nanocomposite was electrosynthesized on the glassy carbon electrode (GCE) by a facile and fast two-step electrochemical process. Structure and physicochemical properties of PtNPs/Ni-Al LDH/GCE were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectrometry and electrochemical methods. Then, electrocatalytic and stability characterizations of the PtNPs/Ni-Al LDH/GCE for methanol oxidation in alkaline media were investigated in detail by cyclic voltammetry, chronoamperometry, and chronopotentiometry measurements. PtNPs/Ni-Al LDH/GCE exhibited higher electrocatalytic activity than PtNPs/GCE and Ni-Al LDH/GCE. Also, the resulted chronoamperograms indicated that the PtNPs/Ni-Al LDH/GCE has a better stability.

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Electrocatalytic Oxidation of Methanol and Ethanol by Carbon Ceramic Electrode Modified with Ni/Al LDH Nanoparticles

Cited by 31 publications

References 33 publications

Effects of Incorporated Iron or Cobalt on the Ethanol Oxidation Activity of Nickel (Oxy)Hydroxides in Alkaline Media

Effects of Incorporated Iron or Cobalt on the Ethanol Oxidation Activity of Nickel (Oxy)Hydroxides in Alkaline Media

Recent Advance of Transition‐Metal‐Based Layered Double Hydroxide Nanosheets: Synthesis, Properties, Modification, and Electrocatalytic Applications

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

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