Directing Energy Flow in Core–Shell Nanostructures for Efficient Plasmon-Enhanced Electrocatalysis

Jung, Hayoon; Kwon, Yong-Min; Kim, Yonghyeon; Ahn, Hochan; Ahn, Hojin; Wy, Younghyun; Han, Sang Woo

doi:10.1021/acs.nanolett.2c04544

Cited by 14 publications

(14 citation statements)

References 51 publications

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“…These advantageous features endow ultrathin 2D NSs with immense potential as highly efficient electrocatalysts. However, unlike traditional layered materials, such as graphene, 2D transition-metal dichalcogenides, and MXenes, Pt-group metals tend to spontaneously grow into three-dimensional structures due to their nonlayered nature. − Furthermore, the surface energy of Pt-group metals increases significantly with decreasing thickness, promoting the formation of metal nanoparticles (NPs) . Consequently, developing effective synthesis routes for atomically thin 2D Pt-group metal NSs remains a formidable challenge compared to traditional layered materials.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Rh Nanosheets with Rich Grain Boundaries for Efficient Hydrogen Oxidation Electrocatalysis

Yang,

Ouyang,

Zhao

et al. 2023

J. Am. Chem. Soc.

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Two-dimensional (2D) Pt-group ultrathin nanosheets (NSs) are promising advanced electrocatalysts for energyrelated catalytic reactions. However, improving the electrocatalytic activity of 2D Pt-group NSs through the addition of abundant grain boundaries (GBs) and understanding the underlying formation mechanism remain significant challenges. Herein, we report the controllable synthesis of a series of Rh-based nanocrystals (e.g., Rh nanoparticles, Rh NSs, and Rh NSs with GBs) through a COmediated kinetic control synthesis route. In light of the 2D NSs' structural advantages and GB modification, the Rh NSs with rich GBs exhibit an enhanced electrocatalytic activity compared to pure Rh NSs and commercial Pt/C toward the hydrogen oxidation reaction (HOR) in alkaline media. Both experimental results and theoretical computations corroborate that the GBs in the Rh NSs have the capacity to ameliorate the adsorption free energy of reaction intermediates during the HOR, thus resulting in outstanding HOR catalytic performance. Our work offers novel perspectives in the realm of developing sophisticated 2D Pt-group metal electrocatalysts with rich GBs for the energy conversion field.

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Section: Introductionmentioning

confidence: 99%

Ultrathin Rh Nanosheets with Rich Grain Boundaries for Efficient Hydrogen Oxidation Electrocatalysis

Yang,

Ouyang,

Zhao

et al. 2023

J. Am. Chem. Soc.

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“…The implementation of interface engineering in the coreshell structure is commonly employed to augment the catalytic efficacy and durability of the catalyst. [83][84][85] Inspired by the method of creating core-shell heterointerfaces Liu et al developed an electrocatalyst in which amorphous NiFe(OH) x is present as a shell and (NiFe)Se 2 is present as a core (Figure 4e). [86] This core shell heterostructure exhibit the overpotential of 180 mV to drive the current density of 10 mA cm À 2 .…”

Section: Electronic Redistribution Between the Heterointerface Of Tra...mentioning

confidence: 99%

“…The implementation of interface engineering in the core‐shell structure is commonly employed to augment the catalytic efficacy and durability of the catalyst [83–85] . Inspired by the method of creating core‐shell heterointerfaces Liu et al.…”

Section: Electronic Redistribution In Different Types Of Heterointerf...mentioning

confidence: 99%

Electronic Redistribution Through the Interface: A Prodigy that Enhances Electrocatalysis

Gaur,

Sharma,

Bagchi

2024

ChemCatChem

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Efficient design approaches have been developed to create electrocatalysts with the aim of enhancing both the number of active sites and the inherent activity of each individual active site. There is a requirement for more universally applicable approaches to thoroughly understand the activity of electrocatalysts. Heterojunctions have a notable positive impact on electrode surfaces, especially for compounds that have groups capable of donating or withdrawing electrons. Heterojunctions generate a confined distribution of electric charge at the boundary due to an intrinsic electric field caused by the differences in work function between the materials present. The existence of a concentrated charge distribution at the interface leads to the creation of an electro/nucleophilic region, which increases the attraction of intermediary substances. On the other hand, the existence of a site with an abundance of electrons greatly enhances the capacity for hydrogen adsorption and also improves other electroreduction processes. Conversely, the presence of a site with a deficiency of electrons greatly enhances the oxygen evolution reaction (OER). This review summarizes the electron redistribution phenomenon happening after the strong contact between two interfaces. We have explained the charge distribution phenomenon in semiconductor‐semiconductor heterojunctions and metal‐semiconductor heterojunctions.

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“…For the charge transfer process, the separated hot electrons from plasmonic domains flow into the catalytic domains to regulate their electronic structures and optimize the adsorption/desorption of reactive species, hence accelerate the rate of reactions. [60] However, the role of generated hole and electron is different in LSPR enhanced electrooxidation and electroreduction reduction. Thus, we discussed separately their mechanism and electrocatalytic application in term of oxidation and reduction reaction.…”

Section: Charge Transfer Enhancementmentioning

confidence: 99%

Metallic Heterostructures for Plasmon‐Enhanced Electrocatalysis

Xia

Wei

et al. 2023

ChemPhysChem

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Metallic heterogeneous nanostructures with plasmonic functionality have attracted great attention in the field of plasmon‐enhanced electrocatalysis, where surface plasmons produced under light excitation could facilitate the overall electrocatalytic performances. Owing to their controllability, multifunctionality, and complexity, heterogeneous metallic nanostructures take advantages of the properties from individual components and synergistic effects from adjacent components, thus may achieve remarkable electrocatalytic performances. This review highlights the state‐of‐the‐art progress of the application of metallic heterostructures for plasmon‐enhanced electrocatalysis. First, a brief introduction to plasmonic heterogeneous nanostructures is demonstrated. Then, fundamental principles of localized surface plasmon resonance and the underlying mechanisms of plasmonic heterogeneous nanostructures in catalysis are discussed. This is followed by a discussion of recent advances of plasmonic heterogeneous nanostructures in plasmon‐enhanced electrocatalysis, in which the enhanced activity, selectivity, and stability are particularly emphasized. Finally, an outlook of remaining challenges and future opportunities for plasmonic heterogeneous nanomaterials and plasmon‐related electrocatalysis is presented.

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Directing Energy Flow in Core–Shell Nanostructures for Efficient Plasmon-Enhanced Electrocatalysis

Cited by 14 publications

References 51 publications

Ultrathin Rh Nanosheets with Rich Grain Boundaries for Efficient Hydrogen Oxidation Electrocatalysis

Ultrathin Rh Nanosheets with Rich Grain Boundaries for Efficient Hydrogen Oxidation Electrocatalysis

Electronic Redistribution Through the Interface: A Prodigy that Enhances Electrocatalysis

Metallic Heterostructures for Plasmon‐Enhanced Electrocatalysis

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