The importance of the shape of Cu2O nanocrystals on plasmon-enhanced oxygen evolution reaction in alkaline media

Saada, Tamazouzt Nait; Pang, Liuqing; Kumar, Kilaparthi Sravan; Dourado, André H. B.; Vicentini, Eduardo D.; Batista, Ana P.; Oliveira-Filho, Antonio G. S. de; Dumeignil, Franck; Paul, Sébastien; Wojcieszak, Robert; Melinte, Sorin; Sandu, Georgiana; Petretto, Guido; Rignanese, Gian‐Marco; Braga, Adriano H.; Rosado, Taissa F.; Meziane, Dalila; Boukherroub, Rabah; Silva, Anderson G. M. da; Szunerits, Sabine

doi:10.1016/j.electacta.2021.138810

Cited by 15 publications

(10 citation statements)

References 37 publications

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“…Saada and co-workers investigated the impact of Cu 2 O–Au decorated nanocrystal morphology on the oxygen evolution reaction (OER) in alkaline media (sodium hydroxide) under solar illumination. Five types of different samples were used as shown in Figure b,c (gold electrodes, S1 ; S1 coated with Cu 2 O cubes, S2 ; S1 coated with Cu 2 O octahedra, S3 ; gold nanoparticles decorated Cu 2 O (Cu 2 O–Au) cubic, S4 ; gold nanoparticles decorated Cu 2 O (Cu 2 O–Au) octahedral, S5 ).…”

Section: Plasmon-enhanced Photocatalysis For Green Energy Productionmentioning

confidence: 99%

Plasmon-Enhanced Photocatalysis Based on Plasmonic Nanoparticles for Energy and Environmental Solutions: A Review

Amirjani,

Amlashi,

Ahmadiani

2023

ACS Appl. Nano Mater.

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Plasmonic nanoparticles are able to enhance the photocatalytic performance of semiconductor nanoparticles using four main mechanisms of light scattering, light concentration, hot electron injections, and plasmon-induced resonance energy transfer. Pushing the semiconductor nanoparticles' absorption range to the visible and near-infrared and boosting the electron−hole generation quantum yield are the major effects. However, most of the reviewed papers lack a systematic design for conjugation of plasmonic nanoparticles with semiconductor nanoparticles, and they mainly benefited from the general enhancement because of the generated localized surface plasmon resonances. In this Review, we have systematically showed the importance of rational optical design of plasmonic-semiconductor nanoparticle conjugation for an efficient photocatalytic activity. The application of plasmon-enhanced phenomenon for the environmental remediation and green energy production was thoroughly reviewed. The degradation of organic dyes, air pollutants, volatile organic compounds, pesticides, and pharmaceutical compounds were the major reviewed works in environmental applications, while the green energy productions were limited to the role of plasmonic nanoparticles for the enhancement of H 2 /O 2 production, water splitting, and CO 2 reduction. This review can be a useful guideline for researchers working on enhancing the photocatalytic activity of the semiconductor nanoparticles and those interested in plasmon-enhanced phenomena by emphasizing the underlying mechanisms.

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Section: Plasmon-enhanced Photocatalysis For Green Energy Productionmentioning

confidence: 99%

Plasmon-Enhanced Photocatalysis Based on Plasmonic Nanoparticles for Energy and Environmental Solutions: A Review

Amirjani,

Amlashi,

Ahmadiani

2023

ACS Appl. Nano Mater.

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“…Moreover, trapping of charge carriers plays a crucial role in the photophysical properties of Cu2O: defect states promote the ultrafast relaxation of excited electrons, [14,15] hence bulk electrons are unable to reach the surface where the catalytic reaction would take place. [16] A vast number of approaches have been implemented to facilitate the separation of electrons and holes in order to enhance their utilization in redox processes, such as preparation of Cu2O/metal heterostructures, [17][18][19][20][21][22] forming heterojunctions with another semiconductor, [23][24][25][26][27] metal-organic framework [28] or doping. [29] In particular, combining Cu2O and Au at the nanoscale was found to be a promising strategy to overcome the above-mentioned limitations rooting in the inefficient charge transport and the lack of charge carrier separation.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, photoexcited electrons can be transferred to the Au domain from the conduction band of cuprous oxide. Considering the more advantageous properties of the octahedral morphology, synthetic methods have been explored to reduce the gold salt on the {111} plane, [7,10,11,17,30] or overgrowing a CTAB-capped AuNR with an octahedral Cu2O shell in an aqueous medium. [18,[31][32][33] While for Cu2O octahedra decorated with small AuNGs (i.e.…”

Section: Introductionmentioning

confidence: 99%

Position of Gold Dictates the Photophysical and Photocatalytic Properties of Cu2O in Cu2O/Au Multicomponent Nanoparticles

Kovács

Deák

Radnóczi

et al. 2023

Preprint

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Utilizing solar radiation for driving chemical reactions has been of great interest in the last decade. Although Cu2O nanocrystals as a low-cost, abundant, and tailorable photocatalyst are promising candidates to provide a platform for solar-driven applications, their photophysical properties are affected by the limited charge carrier mobility. This paper focuses on the more efficient utilization of the UV light-excited charge carriers in cuprous oxide by preparing different heterostructures with gold. While keeping the size, shape as well as overall composition of the heterostructures identical, the realization of the gold component is varied: either nanograins are created at the surface of the Cu2O nanooctahedra or nanorods are embedded in their interior. The effect of the morphology and the semiconductor-metal contact on the optical and photocatalytic properties is investigated in-detail by spectroscopy, spectrofluorometry, imaging techniques, X-ray diffractometry, and photoelectron spectroscopy extended with optical simulations and single-particle spectroscopy measurements. In terms of particle stability and photocatalytic activity, gold-decorated Cu2O nanooctahedra show superior properties. The comprehensive comparison of the multicomponent nanoparticles underlines the importance of the nanoscale design (including composition, morphology, and surface chemistry), which utilizes the photoexcited carriers in the semiconductor without injecting hot electrons from the metal.

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“…Photoelectrochemical solar-to-fuel conversion has been considered as a promising strategy for achieving a sustainable society. − In addition to established semiconductor-based electrodes, plasmonic electrodes have also attracted considerable attention owing to their unique light-harvesting properties associated with localized surface plasmon resonance (LSPR). − LSPR arises from the excitation of the collective oscillation of free electrons on a noble metal nanoparticle surface upon light irradiation, and hot carriers generated upon LSPR excitation have recently been reported to accelerate electrochemical reactions. − Namely, electron transfer between a plasmonic electrode and a reaction substrate can be promoted upon LSPR excitation, leading to the enhancement of electrocatalytic current under light irradiation. Furthermore, the use of a plasmonic electrode in combination with electrocatalysts enables us to accelerate an intended reaction including energy-storing reactions such as hydrogen (H 2 ) evolution, − carbon dioxide (CO 2 ) reduction, − nitrate reduction, and oxygen evolution. ,− …”

Section: Introductionmentioning

confidence: 99%

Wavelength-Dependent Selective Acceleration of CO₂ Reduction and H₂ Evolution Using a Plasmonic Gold Nanorod Electrode

Takashima

Kitta

Irie

2022

ACS Appl. Nano Mater.

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A plasmonic electrode shows localized surface plasmon resonance (LSPR) at an intended wavelength based on the design of its nanostructure, and LSPR excitation is known to accelerate electrochemical reactions. In this study, we synthesized two types of gold nanorod, with and without platinum modification, and prepared a composite electrode consisting of these nanorods. Upon LSPR excitation, the gold nanorods showed enhanced carbon dioxide (CO 2 ) reduction, whereas the platinum-modified gold nanorods promoted hydrogen (H 2 ) evolution. Because these activations were induced at different wavelengths owing to the different aspect ratios of the nanorods, the composite electrode showed a change in Faradaic efficiencies for CO 2 reduction and H 2 evolution depending on the irradiation wavelength at a constant potential. Thus, this type of photoelectrode would enable the wavelength-dependent production of selected compounds and the use of irradiation wavelength as a parameter of photoelectrochemical reactions.

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The importance of the shape of Cu2O nanocrystals on plasmon-enhanced oxygen evolution reaction in alkaline media

Cited by 15 publications

References 37 publications

Plasmon-Enhanced Photocatalysis Based on Plasmonic Nanoparticles for Energy and Environmental Solutions: A Review

Plasmon-Enhanced Photocatalysis Based on Plasmonic Nanoparticles for Energy and Environmental Solutions: A Review

Position of Gold Dictates the Photophysical and Photocatalytic Properties of Cu2O in Cu2O/Au Multicomponent Nanoparticles

Wavelength-Dependent Selective Acceleration of CO₂ Reduction and H₂ Evolution Using a Plasmonic Gold Nanorod Electrode

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The importance of the shape of Cu2O nanocrystals on plasmon-enhanced oxygen evolution reaction in alkaline media

Cited by 15 publications

References 37 publications

Plasmon-Enhanced Photocatalysis Based on Plasmonic Nanoparticles for Energy and Environmental Solutions: A Review

Plasmon-Enhanced Photocatalysis Based on Plasmonic Nanoparticles for Energy and Environmental Solutions: A Review

Position of Gold Dictates the Photophysical and Photocatalytic Properties of Cu2O in Cu2O/Au Multicomponent Nanoparticles

Wavelength-Dependent Selective Acceleration of CO2 Reduction and H2 Evolution Using a Plasmonic Gold Nanorod Electrode

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Wavelength-Dependent Selective Acceleration of CO₂ Reduction and H₂ Evolution Using a Plasmonic Gold Nanorod Electrode