Composition optimized trimetallic PtNiRu dendritic nanostructures as versatile and active electrocatalysts for alcohol oxidation

Lü, Yan; Wang, Wei; Chen, Xiaowei; Zhang, Yuhui; Han, Yanchen; Cheng, Yong; Chen, Xue-Jiao; Li, Kai; Wang, Yuanyuan; Zhang, Qiaobao; Xie, Shuifen

doi:10.1007/s12274-019-2273-3

Cited by 55 publications

(40 citation statements)

References 61 publications

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“…Therefore, it is For comparing the obtained results with the literature, a comparison table was added. Table 2 summarizes the comparison between the characteristics of the prepared modified carbon paste electrode and some previously modified electrodes [36][37][38][39]. As shown, the prepared modified electrode in this research has acceptable performance for methanol oxidation in acidic medium compared to other ones.…”

Section: The Ni-mmt/cpe Ability In Re-oxidation Of Methanolmentioning

confidence: 79%

Electrochemical activity of Ni-montmorillonite/Vulcan XC-72R carbon black nano-catalyst for the oxidation of methanol in acidic medium

et al. 2019

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Direct methanol fuel cell is claiming to be the most main power source in future as a clean energy source, for which methanol is used as fuel. In the present study, nickel nanoparticles were synthesized by green route in the presence of montmorillonite (Ni-MMT). Then the electrochemical activity of prepared nanocomposite was investigated in methanol oxidation reaction in acidic medium. In the process of nickel nanoparticle synthesis, the natural substrate montmorillonite was used as capping agent and Allium jesdianum water extract was used as the source of reducing agent for the first time. The Ni-MMT sample was characterized by UV-Vis, XRD, SEM and EDX techniques. Production of nickel nanoparticles in the proposed green method is confirmed by absorption peak of 405 nm in UV-Vis spectrum. The average particle size of Ni-MMT was determined as 20.80 nm. The oxidation of methanol in acidic medium was studied by cyclic voltammetry using Ni-MMTmodified carbon paste electrode (Ni-MMT/CPE). Methanol was oxidized on the modified electrode surface at 0.3 V. Also, the catalytic current of methanol oxidation was 3 mA in H 2 SO 4 electrolyte which is significantly more than unmodified CPE. The concentration of 0.5 M for H 2 SO 4 was obtained as the optimum electrolyte for the oxidation of methanol. Methanol can be catalyzed in the concentration range of 0.1-0.5 M by the prepared nanostructured catalyst. Graphic abstractNi nanoparticles in montmorillonite (Ni-MMT) which was prepared by Allium jesdianum extract have a good electrocatalytic effect on methanol oxidation.

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Section: The Ni-mmt/cpe Ability In Re-oxidation Of Methanolmentioning

confidence: 79%

Electrochemical activity of Ni-montmorillonite/Vulcan XC-72R carbon black nano-catalyst for the oxidation of methanol in acidic medium

et al. 2019

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“…[43][44][45] The reasonw hy the lattice constant (3.524, 3.527,a nd 3.530 ,r espectively;T able S1) becomes ChemSusChem 2020, 13,964 -973 www.chemsuschem.org larger with increasing nickel contenti st hat nickela toms with smaller radius partially replacec obalt atoms with larger radius, which indicates that the three bimetals initially reach the degree of alloying. [46] Small and uniform nanoparticles prepared by adding7 0mL of DIW could be observed in SEM and TEM images (Figure1h, Figures S1 and S3). The large number of edges and corners that are clearly observed on the particles (Figure 1h)f orm irregularp olyhedral structures.…”

Section: Methodsmentioning

confidence: 97%

Unusual Effect of Trace Water on the Structure and Activity of Ni_xCo_1−x Electrocatalysts for the Methanol Oxidation Reaction

Que

Yao

et al. 2020

ChemSusChem

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Highly active Ni‐based catalysts have attracted much attention but are still facing challenges owing to the immature synthetic method. Herein, polyhedral NixCo1−x alloy was prepared by a facile modified polyol method in which a trace amount of water could halve the particle size of the alloy. The Ni/Co ratios in NixCo1−x alloy strictly depended on the used amount of water owing to the different solubilities of the precursors. Among them, the Ni0.6Co0.4 nanoparticles obtained with 70 μL of deionized water exhibited the best performance in the methanol oxidation reaction with a peak current density of 116 mA cm−2 in the presence of 1 m NaOH+0.5 m CH3OH solution, which is higher than those of Ni0.7Co0.3 (80 mA cm−2) and Ni0.5Co0.5 (33 mA cm−2). The excellent performance of Ni0.6Co0.4 is attributed to the unique structure with appropriate Ni/Co ratio, which elongates the C−O bond in methanol and lowers the reaction free energy according to DFT calculations.

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“…A large variety of energy-related electrocatalytic systems have attracted widespread attention [1][2][3], such as electrochemical alcohol oxidation reactions (EAOR), oxygen reduction reaction (ORR), and hydrogen evolution reaction (HER) [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Platinum is one of the most effective monometallic electrocatalysts in acidic media due to its superior catalytic nature [18]. However, the low abun-dance and CO poisoning of platinum catalysts remain a huge challenge [19].…”

Section: Introductionmentioning

confidence: 99%

超细PtCu纳米线的表面结构调控及其增强的醇类电催化氧化作用

et al. 2020

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Surface tailoring of Pt-based nanocatalysts is an effective pathway to promote their electrocatalytic performance and multifunctionality. Here, we report two kinds of one-dimensional (1D) ultrafine PtCu nanowires (smooth surface & rugged surface) synthesized via a wet chemical method and their distinct catalytic performances in electrooxidation of alcohols. The alloyed PtCu nanowires having rough surfaces with atomic steps exhibit superior catalytic activity toward multiple electrochemical reactions compared with the smooth counterpart. Density functional theory simulations show the excellent reactivity of rugged PtCu nanowires and attribute it to the surface synergetic Pt-Cu site which accounts for the promotion of water dissociation and the dehydrogenation of the carboxyl intermediate. The current study provides an insight into reasonable design of alloy nanocatalysts in energy-related electrocatalytic systems.

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Composition optimized trimetallic PtNiRu dendritic nanostructures as versatile and active electrocatalysts for alcohol oxidation

Cited by 55 publications

References 61 publications

Electrochemical activity of Ni-montmorillonite/Vulcan XC-72R carbon black nano-catalyst for the oxidation of methanol in acidic medium

Electrochemical activity of Ni-montmorillonite/Vulcan XC-72R carbon black nano-catalyst for the oxidation of methanol in acidic medium

Unusual Effect of Trace Water on the Structure and Activity of Ni_xCo_1−x Electrocatalysts for the Methanol Oxidation Reaction

超细PtCu纳米线的表面结构调控及其增强的醇类电催化氧化作用

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Composition optimized trimetallic PtNiRu dendritic nanostructures as versatile and active electrocatalysts for alcohol oxidation

Cited by 55 publications

References 61 publications

Electrochemical activity of Ni-montmorillonite/Vulcan XC-72R carbon black nano-catalyst for the oxidation of methanol in acidic medium

Electrochemical activity of Ni-montmorillonite/Vulcan XC-72R carbon black nano-catalyst for the oxidation of methanol in acidic medium

Unusual Effect of Trace Water on the Structure and Activity of NixCo1−x Electrocatalysts for the Methanol Oxidation Reaction

超细PtCu纳米线的表面结构调控及其增强的醇类 电催化氧化作用

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Unusual Effect of Trace Water on the Structure and Activity of Ni_xCo_1−x Electrocatalysts for the Methanol Oxidation Reaction

超细PtCu纳米线的表面结构调控及其增强的醇类电催化氧化作用