Ball-flower-shaped Ni nanoparticles on Cu modified TiO2 nanotube arrays for electrocatalytic oxidation of methanol

Fan, Zhengtong; Hou, Guangya; Tang, Yiping; Zheng, Guoqu

doi:10.1016/j.electacta.2014.01.101

Cited by 34 publications

(15 citation statements)

References 30 publications

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“…Based on our observations, we propose a scheme for Ni/TiO 2 that explains its photocatalytic activity, see Finally for the NiAu/TiO 2 samples, an alloy is not expected because of the immiscibility between nickel and gold [42,43]. The synergetic effect has been observed using bimetallic NPs in catalysis and photocatalysis [44][45][46]. In photocatalysis, the synergy has been commonly related to electronic and geometry effects.…”

Section: Discussionmentioning

confidence: 82%

Synergetic effect of Ni and Au nanoparticles synthesized on titania particles for efficient photocatalytic hydrogen production

Luna

Novoseltceva

Louarn

et al. 2016

Applied Catalysis B: Environmental

144

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Au and/or Ni nanoparticles were synthesized by radiolysis on TiO 2 (commercial P25) at various composition (metal content). The modified photocatalysts were characterized by High Resolution Transmission Microscopy (HRTEM), Energy-Dispersive X-ray Spectroscopy (EDS), UV-Vis Diffuse Reflectance Spectroscopy (DRS) and X-Ray Photoelectron Spectroscopy (XPS). The charge-carrier mobility was studied by Time Resolved Microwave Conductivity (TRMC). The photocatalytic activities were tested under UV-visible irradiation using polychromatic and monochromatic light (action spectrum analysis of apparent quantum efficiency). Surface modified TiO 2 with Au and Ni nanoparticles showed high photocatalytic activity for hydrogen evolution from aqueous methanol solution. The enhanced hydrogen evolution rate was obtained for TiO 2 co-modified with Au and Ni, where synergetic effect of the two metals was revealed. A very small amount of gold associated to nickel (atomic ratio Ni:Au 5:1 with a total optimized metal loading of 0.5at%) can induce a significant increase in H 2 formation.

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Section: Discussionmentioning

confidence: 82%

Synergetic effect of Ni and Au nanoparticles synthesized on titania particles for efficient photocatalytic hydrogen production

Luna

Novoseltceva

Louarn

et al. 2016

Applied Catalysis B: Environmental

144

View full text Add to dashboard Cite

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“…However, most commonly used inexpensive to 30 (Ni NPs) and 100 Nickel nanoparticles possess a ball-flower structure, leading to a large specific surface area. In addition, copper interlayer enhanced the conductivity of substrate and showed a synergistic effect with Ni, which enhanced the rate of electron transfer process [85] Cu-Ni Incipient wetness technique/precipitation 1 to 10 The properties of bimetallic alloy particles were investigated. It was found that the presence of Cu greatly enhanced the reducibility of the Ni species and about 85% of the particles were metallic.…”

Section: Challenges and Prospectsmentioning

confidence: 99%

Progress, Challenge, and Perspective of Bimetallic TiO₂‐Based Photocatalysts

Zielińska‐Jurek

2014

Journal of Nanomaterials

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Bimetallic TiO2-based photocatalysts have attracted considerable attention in recent years as a class of highly active catalysts and photocatalysts under both UV and Vis light irradiation. Bimetallic noble metal structures deposited on TiO2possess the ability to absorb visible light, in a wide wavelength range (broad LSPR peak), and therefore reveal the highest level of activity as a result of utilization of a large amount of incident photons. On the other hand they can enhance the rate of trapping photoexcited electrons and inhibit the recombination process due to the capability of the storage of photoexcited electrons. Based on literature two groups of bimetallic photocatalysts were distinguished. The first group includes bimetallic TiO2photocatalysts (BMOX), highly active under UV and Vis light irradiation in a variety of oxidation reactions, and the second group presents bimetallic photocatalysts (BMRED) exceptionally active in hydrogenation reactions. This review summarizes recent advances in the preparation and environmental application of bimetallic TiO2-based photocatalysts. Moreover, the effects of various parameters such as particle shape, size, amount of metals, and calcination on the photocatalytic activity of bimetallic TiO2-based photocatalysts are also discussed.

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“…In addition to the above discussion, several other groups also reported Cu-based catalysts that show excellent ultrahigh performance toward methanol oxidation. [157][158][159][160][161][162] Summary: In conclusion, the availability of non-noble metals to serve as catalysts for MOR creates a great possibility to avoid the use of expensive noble metals as well as take advantage of the stability of non-noble metals as anode catalysts. Reports indicate nickel oxide with micro-spherical structure demonstrates a large specific surface area compared to NiO nanoflake and porous nanoflakes structures.…”

Section: Coppermentioning

confidence: 99%

A comprehensive and critical review on recent progress in anode catalyst for methanol oxidation reaction

2020

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The synthesis of anode electrocatalyst with high activity and durability for methanol oxidation reaction has been one of the main focuses of researchers in recent years. Several works are reviewed in this paper to summarize and compare the performance of electrocatalysts comprising of noble and non-noble metals. The effect of manipulating catalysts by introducing nanostructured morphology, metal alloys, support materials, acidic or basic electrolyte, and synthesis methods are also examined. The paper finally concludes with details of challenges that are generally faced in making direct methanol fuel cell (DMFC) a reliable source of energy for future prospects, and the approach to be taken to reduce the complexity in synthesizing new generations of anode electrocatalysts.

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Ball-flower-shaped Ni nanoparticles on Cu modified TiO2 nanotube arrays for electrocatalytic oxidation of methanol

Cited by 34 publications

References 30 publications

Synergetic effect of Ni and Au nanoparticles synthesized on titania particles for efficient photocatalytic hydrogen production

Synergetic effect of Ni and Au nanoparticles synthesized on titania particles for efficient photocatalytic hydrogen production

Progress, Challenge, and Perspective of Bimetallic TiO₂‐Based Photocatalysts

A comprehensive and critical review on recent progress in anode catalyst for methanol oxidation reaction

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Ball-flower-shaped Ni nanoparticles on Cu modified TiO2 nanotube arrays for electrocatalytic oxidation of methanol

Cited by 34 publications

References 30 publications

Synergetic effect of Ni and Au nanoparticles synthesized on titania particles for efficient photocatalytic hydrogen production

Synergetic effect of Ni and Au nanoparticles synthesized on titania particles for efficient photocatalytic hydrogen production

Progress, Challenge, and Perspective of Bimetallic TiO2‐Based Photocatalysts

A comprehensive and critical review on recent progress in anode catalyst for methanol oxidation reaction

Contact Info

Product

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Progress, Challenge, and Perspective of Bimetallic TiO₂‐Based Photocatalysts