Improved Hydrogen Production of Au–Pt–CdS Hetero‐Nanostructures by Efficient Plasmon‐Induced Multipathway Electron Transfer

Ma, Liang; Chen, Kai; Nan, Fan; Wang, Jiahong; Yang, Da‐Jie; Zhou, Li; Wang, Qu‐Quan

doi:10.1002/adfm.201601651

Cited by 141 publications

(104 citation statements)

References 49 publications

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“…The lattice plane spacing of 0.3 nm in the tip region agrees well with the (110) lattice planes of Cu 2 O. The lattice plane spacing of 0.26 nm in the central region agrees well with the 1/3 (422) lattice planes of the face-centered cubic (fcc) Ag58. The inserted fast Fourier transform images also agree with the lattice planes for Cu 2 O and Ag, respectively.…”

Section: Resultssupporting

confidence: 66%

Plasmon-assisted site-selective growth of Ag nanotriangles and Ag-Cu2O hybrids

Xie

Cheng

et al. 2017

Sci Rep

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We report a plasmon-assisted growth of metal and semiconductor onto the tips of Ag nanotriangles (AgNTs) under light irradiation. The site-selective growth of Ag onto AgNTs are firstly demonstrated on the copper grids and amine-coated glass slides. As the irradiation time increases, microscopic images indicate that AgNTs gradually touch with each other and finally “weld” tip-to-tip together into the branched chains. Meanwhile, the redshift of plasmon band is observed in the extinction spectra, which agrees well the growth at the tips of AgNTs and the decrease of the gaps between the adjacent nanotriangles. We also synthesize AgNT-Cu2O nanocomposites by using a photochemical method and find that the Cu2O nanoparticles preferably grow on the tips of AgNTs. The site-selective growth of Ag and Cu2O is interpreted by the local field concentration at the tips of AgNTs induced by surface plasmon resonance under light excitation.

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Section: Resultssupporting

confidence: 66%

Plasmon-assisted site-selective growth of Ag nanotriangles and Ag-Cu2O hybrids

Xie

Cheng

et al. 2017

Sci Rep

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“…This is because that the hybrid NPs with 1D shape enable more efficient charge separation ability in comparison with hybrid NPs of other morphologies . The noble metal component within the hybrid NPs can work as a co‐catalyst by providing the surface active sites for catalytic reaction with a lower activation energy barrier than semiconductors only . The lifetime of charge carriers in these materials is also extended because of the enhanced rate of electron–hole separation .…”

Section: Introductionmentioning

confidence: 99%

Nonepitaxial Gold‐Tipped ZnSe Hybrid Nanorods for Efficient Photocatalytic Hydrogen Production

Chen

Wang

et al. 2019

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For the first time, colloidal gold (Au)–ZnSe hybrid nanorods (NRs) with controlled size and location of Au domains are synthesized and used for hydrogen production by photocatalytic water splitting. Au tips are found to grow on the apices of ZnSe NRs nonepitaxially to form an interface with no preference of orientation between Au(111) and ZnSe(001). Density functional theory calculations reveal that the Au tips on ZnSe hybrid NRs gain enhanced adsorption of H compared to pristine Au, which favors the hydrogen evolution reaction. Photocatalytic tests reveal that the Au tips on ZnSe NRs effectively enhance the photocatalytic performance in hydrogen generation, in which the single Au‐tipped ZnSe hybrid NRs show the highest photocatalytic hydrogen production rate of 437.8 µmol h−1 g−1 in comparison with a rate of 51.5 µmol h−1 g−1 for pristine ZnSe NRs. An apparent quantum efficiency of 1.3% for hydrogen evolution reaction for single Au‐tipped ZnSe hybrid NRs is obtained, showing the potential application of this type of cadmium (Cd)‐free metal–semiconductor hybrid nanoparticles (NPs) in solar hydrogen production. This work opens an avenue toward Cd‐free hybrid NP‐based photocatalysis for clean fuel production.

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“…Indeed, plasmonic nanocrystals integrated with an electron acceptor metal or semiconductor at high curvature sites will increase the light harvesting efficiency. The concept is well adapted with TiO 2 , MoS 2 , Pt, and Ni(OH) 2 as hot electron acceptors in photocatalytic water splitting activities. This motivates us to use a bifunctional catalyst (to act as a reduction and oxidation site) at different sites on the Au NR and to investigate catalytic activity with different topological changes.…”

Section: Introductionmentioning

confidence: 99%

Plasmon‐Induced Hot Carrier Separation across Dual Interface in Gold–Nickel Phosphide Heterojunction for Photocatalytic Water Splitting

Mondal

Lee

Kim

et al. 2019

Adv Funct Materials

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Precise control of the topology of metal nanocrystals and appropriate modulation of the metal–semiconductor heterostructure is an important way to understand the relationship between structure and material properties for plasmon‐induced solar‐to‐chemical energy conversion. Here, a bottom‐up wet chemical approach to synthesize Au/Ni2P heterostructures via Pt‐catalyzed quasi‐epitaxial overgrowth of Ni on Au nanorods (NR) is presented. The structural motif of the Ni2P is controlled using the aspect ratio of the Au NR and the effective micelle concentration of the C16TAB capping agent. Highly ordered Au/Pt/Ni2P nanostructures are employed as the photoelectrocatalytic anode system for water splitting. Electrochemical and ultrafast absorption spectroscopy characterization indicates that the structural motif of the Ni2P (controlled by the outer‐shell deposition of Ni) helps to manipulate hot electron transfer during surface plasmon decay. With optimized Ni2P thickness, Pt‐tipped Au NR with an aspect ratio of 5.2 exhibits a geometric current density of 10 mA cm−2 with an overpotential of 140 mV. The photoanode displays unprecedented long‐term stability with continuous chronoamperometric performance of 50 h at an input potential of 1.5 V with over 30 days. This work provides definitive guidance for designing plasmonic–catalytic nanomaterials for enhanced solar‐to‐chemical energy conversion.

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Improved Hydrogen Production of Au–Pt–CdS Hetero‐Nanostructures by Efficient Plasmon‐Induced Multipathway Electron Transfer

Cited by 141 publications

References 49 publications

Plasmon-assisted site-selective growth of Ag nanotriangles and Ag-Cu2O hybrids

Plasmon-assisted site-selective growth of Ag nanotriangles and Ag-Cu2O hybrids

Nonepitaxial Gold‐Tipped ZnSe Hybrid Nanorods for Efficient Photocatalytic Hydrogen Production

Plasmon‐Induced Hot Carrier Separation across Dual Interface in Gold–Nickel Phosphide Heterojunction for Photocatalytic Water Splitting

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