Synergizing plasmonic Au nanocages with 2D MoS<sub>2</sub> nanosheets for significant enhancement in photocatalytic hydrogen evolution

Peng, Rui; Ma, Xiaohan; Hood, Zachary D.; Boulesbaa, Abdelaziz; Puretzky, Alexander A.; Tong, Jianhua; Wu, Zili

doi:10.1039/d3ta01657a

Cited by 17 publications

(3 citation statements)

References 54 publications

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“…, electrochemical and photocatalytic hydrogen production. 91,92 MoS 2 can serve as the desired substrates of metal NPs, supporting the high electrochemical activities to the hydrolysis reaction. 93 The Pt-MoS 2 hybrid nanomaterials exhibited much higher electrocatalytic activity towards the HER compared with the commercial Pt catalysts.…”

Section: Properties Determine Applicationsmentioning

confidence: 82%

Molybdenum disulfide nanostructures coupled with metal plasmonics for improved electronic and photonic performances

Zhang,

Zheng,

Zhu

et al. 2023

J. Mater. Chem. C

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Section: Properties Determine Applicationsmentioning

confidence: 82%

Molybdenum disulfide nanostructures coupled with metal plasmonics for improved electronic and photonic performances

Zhang,

Zheng,

Zhu

et al. 2023

J. Mater. Chem. C

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“…The photocatalytic performance of Au–semiconductor composites is intricately linked to the exposed crystal facets, loaded content, and particle sizes of deposited Au NPs. Studies have highlighted the importance of reasonable size control of Au NPs for efficient photocatalytic activity. − Bastús et al employed a seed-mediated growth process to synthesize Au NPs with sizes up to approximately 200 nm, modulating size through parameters like the temperature, Au precursor to seed particle concentration, and pH. The temperature played a critical role in influencing the reaction rate and governing growth size, while pH impacted the uniformity of the Au particle distribution, influencing reactivity .…”

Section: Introductionmentioning

confidence: 99%

In Situ Photodeposition of Gold Nanoparticles with Exposed High-Activity Crystal Facets under Different Sacrificial Agents

Lu,

Cui,

Fang

et al. 2024

Langmuir

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In situ photodeposition presents a powerful approach for integrating noble metal co-catalysts onto semiconductor surfaces. However, achieving precise control over the microstructure of the deposited co-catalyst remains a major challenge. Au nanoparticles (NPs) are deposited onto H–KCNO using HAuCl4 in the presence of various sacrificial agents in this study. Notably, the choice of sacrificial agent decisively influences the exposed crystal facets, loaded content, and particle size of the deposited Au NPs. Importantly, in situ photodeposition under an ethanol solution facilitates the exposure of the highly active (111) and (220) crystal facets of Au. The introduction of Au NPs significantly enhances photocatalytic hydrogen evolution, achieving rates of 4.93, 57.88, and 15.44 μmol/h for H–KCNO/Au–(water, ethanol, and lactic acid), respectively. The observed photocatalytic activity for hydrogen evolution indicates that the exposure of the highly active planes emerges as critical for significant performance enhancement. Photoelectrochemical and photoluminescence measurements suggest that the highly active (111) and (220) crystal facets effectively segregate sites for redox reactions, thereby impeding the recombination of photogenerated electron–hole pairs.

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“…This increased charge separation results in significantly improved water electrolysis. Such photoexcited plasmon-driven charge separation on p-type and n-type semiconductor interfaces leading to efficient HER is well reported in the literature. , This work provides an excellent strategy to improve the overall water splitting in an alkaline medium through a synergistic interplay between the photoinduced electron/hole transfer and the surface catalytic reaction at the hybrid heterostructure interfaces of the Au–MoS 2 /NiO/Ni foam catalyst.…”

Section: Introductionmentioning

confidence: 99%

Plasmon–Exciton Coupling-Assisted Efficient Overall Water Splitting in Alkaline Medium Using a Plexcitonic NiO/Ni Foam Catalyst

Ansilda,

Chittilappilly Devassy,

Kamalakshan

et al. 2023

ACS Appl. Eng. Mater.

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The rational design of bifunctional catalysts for efficient water splitting in alkaline medium under photoelectrocatalytic conditions through the coupling of photoinduced electron transfer and surface catalytic reaction holds great promise for sustainable energy conversion. The hydrogen evolution reaction (HER) in alkaline medium is challenging due to the requirement of an additional low-barrier water dissociation step along with the favorable H-adsorption on the catalytic surface. The porous NiO/Ni foam structures provide active sites for water dissociation with a high oxygen evolution reaction (OER) activity. However, their HER activity is limited, presumably due to the lack of Hadsorption sites. Here, we demonstrate a simple strategy to develop a hybrid catalyst for both alkaline HER and OER by in situ coupling of plasmonic and excitonic Au−MoS 2 hybrid nanosheets with the NiO/Ni foam. The plasmon−exciton coupling in the Au−MoS 2 hybrid is known to significantly increase the number of favorable H-adsorption sites and improve effective charge separation at the interface. By combining the low-barrier water dissociation sites of the NiO/Ni foam and the optimal hydrogen adsorption sites of plexcitonic Au−MoS 2 hybrid nanosheets, our designed Au−MoS 2 /NiO/Ni foam hybrid catalyst exhibits much superior alkaline HER and OER performances with lower overpotentials compared to the Au/NiO/Ni, MoS 2 /NiO/Ni, and bare NiO/Ni foam catalysts under both electro-and photoelectrocatalytic conditions. The plasmonic excitation with white light irradiation significantly improves the overall water-splitting performance by strong plasmon−exciton couplingassisted efficient charge transfer in the Au−MoS 2 /NiO/Ni foam hybrid catalyst. This research provides a promising strategy to enhance the alkaline water electrolysis performance in photoelectrocatalytic conditions by engineering the coupling of photoinduced electron transfer and surface-active site reactions of hybrid catalysts.

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Synergizing plasmonic Au nanocages with 2D MoS₂ nanosheets for significant enhancement in photocatalytic hydrogen evolution

Abstract: Plasmonic enhancement of the photocatalytic hydrogen evolution has been achieved under visible light illumination by integrating strongly plasmonic metal particles such as gold (Au) with semiconducting materials. To understand the...

Cited by 17 publications

References 54 publications

Molybdenum disulfide nanostructures coupled with metal plasmonics for improved electronic and photonic performances

Molybdenum disulfide nanostructures coupled with metal plasmonics for improved electronic and photonic performances

In Situ Photodeposition of Gold Nanoparticles with Exposed High-Activity Crystal Facets under Different Sacrificial Agents

Plasmon–Exciton Coupling-Assisted Efficient Overall Water Splitting in Alkaline Medium Using a Plexcitonic NiO/Ni Foam Catalyst

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Synergizing plasmonic Au nanocages with 2D MoS2 nanosheets for significant enhancement in photocatalytic hydrogen evolution

Abstract: Plasmonic enhancement of the photocatalytic hydrogen evolution has been achieved under visible light illumination by integrating strongly plasmonic metal particles such as gold (Au) with semiconducting materials. To understand the...

Cited by 17 publications

References 54 publications

Molybdenum disulfide nanostructures coupled with metal plasmonics for improved electronic and photonic performances

Molybdenum disulfide nanostructures coupled with metal plasmonics for improved electronic and photonic performances

In Situ Photodeposition of Gold Nanoparticles with Exposed High-Activity Crystal Facets under Different Sacrificial Agents

Plasmon–Exciton Coupling-Assisted Efficient Overall Water Splitting in Alkaline Medium Using a Plexcitonic NiO/Ni Foam Catalyst

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Synergizing plasmonic Au nanocages with 2D MoS₂ nanosheets for significant enhancement in photocatalytic hydrogen evolution