Visible-light-driven catalytic activity enhancement of Pd in AuPd nanoparticles for hydrogen evolution from formic acid at room temperature

Liu, Penglong; Gu, Xuehong; Zhang, Hao; Jia, Chenglong; Jin, Song; Su, Haiquan

doi:10.1016/j.apcatb.2016.11.059

Cited by 65 publications

(32 citation statements)

References 68 publications

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“…The generated excitons (positive holes and electrons) can provide necessary energy to activate organic molecules for their conversion to products (FA does not absorb visible light). In spite of the recent advances in heterogeneous/homogeneous catalysis for the release of hydrogen from FA, examples of photocatalysis are scarce and show substantially lower activities . Only recently, CdS has been identified as a potential candidate material for photodecomposition of FA‐to‐H 2 owing to its low cost, suitable valence and conduction band positions, and high visible light activity .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Dehydrogenation of Formic Acid on CdS Nanorods through Ni and Co Redox Mediation under Mild Conditions

et al. 2018

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Selective release of hydrogen from formic acid (FA) is deemed feasible to solve issues associated with the production and storage of hydrogen. Here, we present a new efficient photocatalytic system consisting of CdS nanorods (NRs), Ni, and Co to liberate hydrogen from FA. The optimized noble-metal-free catalytic system employs Ni/Co as a redox mediator to relay electrons and holes from CdS NRs to the Ni and Co, respectively, which also deters the oxidation of CdS NRs. As a result, a high hydrogen production activity of 32.6 mmol h g from the decomposition of FA was noted. Furthermore, the photocatalytic system exhibits sustained H production rate for 12 h with sequential turnover numbers surpassing 4×10 , 3×10 , and 2×10 for Co-Ni/CdS NRs, Ni/CdS NRs, and CoCl /CdS NRs, respectively.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic Dehydrogenation of Formic Acid on CdS Nanorods through Ni and Co Redox Mediation under Mild Conditions

et al. 2018

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“…Additional tests were conducted to elucidate the plasmonic electron-driven mechanism and photothermal effect accompanied by plasmonic effect factors. The linear dependence of TOFs values with the light intensity observed for 1.1%Pt/Te confirmed the importance of the plasmonic electron-driven mechanism for the photocatalysts with low Pt content, while the photothermal effect gains importance for higher Pt content.Su et al reported on the visible-light-driven catalytic activity enhancement of Pd inAuPd nanoparticles supported on graphene oxide (AuPd/GO)[111]. As previously mentioned for some other bimetallic AuPd systems discussed above, the significant effect of the electron transfer from Au to Pd was claimed to be crucial for the enhancement achieved by the AuPd-system under visible-light irradiation.…”

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confidence: 89%

Photocatalytic Approaches for Hydrogen Production via Formic Acid Decomposition

Navlani‐García¹,

Salinas-Torres²,

Mori³

et al. 2019

Topics in Current Chemistry Collections

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The photocatalytic dehydrogenation of formic acid has recently emerged as an outstanding alternative to the traditional thermal catalysts widely applied in this reaction. The utilization of photocatalytic processes for the production of hydrogen is an appealing strategy that perfectly matches with the idea of green and sustainable future energy scenario. However, it sounds easier than it is, and great efforts have been needed to design and develop highly efficient photocatalysts for the production of hydrogen from formic acid. In this work, some of the most representative strategies adopted for this application are reviewed, by paying particular attention to those systems based on TiO2, CdS and C3N4.

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“…Bimetallic particles with gold as the main part and palladium as additive metal are discussed in the literature due to their promising catalytic activity [ 40 , 41 , 42 ]. Gold nanoparticles can be synthesized in different shapes and sizes, thereby covering the entire range of visible light with regard to their activation wavelength [ 2 , 43 , 44 ].…”

Section: Introductionmentioning

confidence: 99%

“…Gold nanoparticles can be synthesized in different shapes and sizes, thereby covering the entire range of visible light with regard to their activation wavelength [ 2 , 43 , 44 ]. The gold part in a linked monometallic structure can thus serve as the “antenna” responsible for plasmonic resonance (and thereby activation) and light collection, whereas palladium represents the catalytic active part [ 40 , 41 ], e.g., for carbon–carbon coupling reactions, [ 45 , 46 ] CO 2 reduction [ 47 ], or hydrogen generation [ 48 ]. Regarding alloyed and core–shell bimetallic nanoparticles, an interesting feature is their localized surface plasmon resonance (LSPR) excitation wavelength.…”

Section: Introductionmentioning

confidence: 99%

Modification of Surface Bond Au Nanospheres by Chemically and Plasmonically Induced Pd Deposition

et al. 2021

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In this work we investigated methods of modifying gold nanospheres bound to a silicon surface by depositing palladium onto the surfaces of single nanoparticles. Bimetallic Au-Pd nanoparticles can thus be gained for use in catalysis or sensor technology. For Pd deposition, two methods were chosen. The first method was the reduction of palladium acetate by ascorbic acid, in which the amounts of palladium acetate and ascorbic acid were varied. In the second method we utilized light-induced metal deposition by making use of the plasmonic effect. Through this method, the surface bond nanoparticles were irradiated with light of wavelengths capable of inducing plasmon resonance. The generation of hot electrons on the particle surface then reduced the palladium acetate in the vicinity of the gold nanoparticle, resulting in palladium-covered gold nanospheres. In our studies we demonstrated the effect of both enhancement methods by monitoring the particle heights over enhancement time by atomic force microscopy (AFM), and investigated the influence of ascorbic acid/Pd acetate concentration as well as the impact of the irradiated wavelengths on the enhancement effect. It could thus be proven that both methods were valid for obtaining a deposition of Pd on the surface of the gold nanoparticles. Deposition of Pd on the gold particles using the light-assisted method could be observed, indicating the impact of the plasmonic effect and hot electron for Pd acetate reduction on the gold particle surface. In the case of the reduction method with ascorbic acid, in addition to Pd deposition on the gold nanoparticle surface, larger pure Pd particles and extended clusters were also generated. The reduction with ascorbic acid however led to a considerably thicker Pd layer of up to 54 nm in comparison to up to 11 nm for the light-induced metal deposition with light resonant to the particle absorption wavelength. Likewise, it could be demonstrated that light of non-resonant wavelengths was not capable of initiating Pd deposition, since a growth of only 1.6 nm (maximum) was observed for the Pd layer.

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Visible-light-driven catalytic activity enhancement of Pd in AuPd nanoparticles for hydrogen evolution from formic acid at room temperature

Cited by 65 publications

References 68 publications

Photocatalytic Dehydrogenation of Formic Acid on CdS Nanorods through Ni and Co Redox Mediation under Mild Conditions

Photocatalytic Dehydrogenation of Formic Acid on CdS Nanorods through Ni and Co Redox Mediation under Mild Conditions

Photocatalytic Approaches for Hydrogen Production via Formic Acid Decomposition

Modification of Surface Bond Au Nanospheres by Chemically and Plasmonically Induced Pd Deposition

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