Localized surface plasmon resonance (LSPR) detection of hydrogen gas by Pd2+/Au core/shell like colloidal nanoparticles

Farnood, Ameneh; Ranjbar, M.; Salamati, H.

doi:10.1016/j.ijhydene.2019.10.168

Cited by 18 publications

(3 citation statements)

References 51 publications

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“…The binding energy of Au 4f 7/2 is 84 eV for pure Au colloid (Figure S9). For the intermixture of Au colloid and AgNO 3 solution, the binding energies of Au 4f 7/2 and Au 4f 5/2 are 84.45 eV and 88.18 eV, respectively, which are slightly higher than that of Au 0 4f 7/2 and 4f 5/2 reported in the literature. , This slight shift may be caused by the adsorption of Ag + on the surface of the Au nanochains. − In addition, the O 1s binding energy in both samples is about 532.51 eV, which is attributed to the hydroxyl groups adsorbed on the surface of Au–Ag alloy nanoparticles or Au nanochains . It is inconsistent with the binding energy of O 1s in gold oxide, which is about 530.2 eV .…”

Section: Resultsmentioning

confidence: 71%

Surface-Plasmon-Mediated Alloying for Monodisperse Au–Ag Alloy Nanoparticles in Liquid

Wei

et al. 2022

Inorg. Chem.

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Plasmonic noble-metal nanoparticles with broadly tunable optical properties and catalytically active surfaces offer a unique opportunity for photochemistry. Resonant optical excitation of surface-plasmon generates high-energy hot carriers, which can participate in photochemical reactions. Although the surface-plasmon-driven catalysis on molecules has been extensively studied, surface-plasmon-mediated synthesis of bimetallic nanomaterials is less reported. Herein, we perform a detailed investigation on the formation mechanism and colloidal stability of monodisperse Au−Ag alloy nanoparticles synthesized through irradiating the intermixture of Au nanochains and AgNO 3 solution with a nanosecond pulsed laser. It is revealed that the Ag atoms can be extracted from AgNO 3 solution by surface-plasmon-generated hot electrons and alloy with Au atoms. Particularly, the obtained Au− Ag alloy nanoparticles without any surfactants or ligands exhibit superior stability that is confirmed by experiments as well as DLVObased theoretical simulation. Our work would provide novel insights into the synthesis of potentially useful bimetallic nanoparticles via surface-plasmon-medicated alloying.

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Section: Resultsmentioning

confidence: 71%

Surface-Plasmon-Mediated Alloying for Monodisperse Au–Ag Alloy Nanoparticles in Liquid

Wei

et al. 2022

Inorg. Chem.

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“…INPs can be placed in ordered array structures by classical lithography (i.e., using prefabricated masks) [79], or by shrinking-hole colloidal lithography [80]. Alternatively, INPs synthesized by aqueous solutions/colloids can randomly be deposited on substrates to fabricate plasmonic sensors [81,82].…”

Section: Materials Based On Isolated Nanoparticlesmentioning

confidence: 99%

Thin Film and Nanostructured Pd-Based Materials for Optical H2 Sensors: A Review

Sousanis

Biskos

2021

Nanomaterials

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In this review paper, we provide an overview of state-of-the-art Pd-based materials for optical H2 sensors. The first part of the manuscript introduces the operating principles, providing background information on the thermodynamics and the primary mechanisms of optical detection. Optical H2 sensors using thin films (i.e., films without any nanostructuring) are discussed first, followed by those employing nanostructured materials based on aggregated or isolated nanoparticles (ANPs and INPs, respectively), as well as complex nanostructured (CN) architectures. The different material types are discussed on the basis of the properties they can attribute to the resulting sensors, including their limit of detection, sensitivity, and response time. Limitations induced by cracking and the hysteresis effect, which reduce the repeatability and reliability of the sensors, as well as by CO poisoning that deteriorates their performance in the long run, are also discussed together with an overview of manufacturing approaches (e.g., tailoring the composition and/or applying functionalizing coatings) for addressing these issues.

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“…Although different mechanisms for hydrogen sensing have been studied so far [2], plasmonic hydrogen sensing by noble metal nanoparticles (N.P.s) has recently received much attention [3]. Au NPs show a strong LSPR absorption band in the visible regen and have good chemical stability, but their functionality toward hydrogen enhances near a hydrogen catalyst like Pd [4]. In a Pd-Au NPs system, when Pd interacts with hydrogen gas, its lattice volume increases up to 90%, leading to increased Au NPs separation [5].…”

Section: Introductionmentioning

confidence: 99%

Plasmon effect on Pd/Au for optical sensing

Karoubi

Akbarzadah

2022

ETN

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In this study, gold nanoislands thin films were fabricated by pulsed laser deposition (PLD) method on quartz substrates at different substrate temperatures of 25, 300, 450, and 600 °C. A thin (4-5 nm) Pd film, as hydrogen catalyst over-layer, was sputter deposited on Au films. PLD at 25 and 300 °C led to semi-continuous surface morphology consisting of very fine-grained aggregates, and at 450 and 600 °C to spherical Au NPs. UV-Vis spectrometry showed localized surface plasmon resonance (LSPR) absorption at 732, 606, 586, and 560 nm for room temperature (R.T.), 300, 450, and 600 °C, respectively. FESEM revealed that hydrogen (10%) exposure induces surface stress leading to Au nanoislands separation. UV-Vis spectrophotometry showed a spectral blue-shift for the LSPR peak attributed to the plasmon coupling effect. Results showed that at various hydrogen concentration of 0 to 10%, films deposited at R.T. provides the most LSPR shift. Overall, we showed that plasmon coupling of PLD derived gold thin films is a suitable tool for accurate detection of hydrogen gas.

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Localized surface plasmon resonance (LSPR) detection of hydrogen gas by Pd2+/Au core/shell like colloidal nanoparticles

Cited by 18 publications

References 51 publications

Surface-Plasmon-Mediated Alloying for Monodisperse Au–Ag Alloy Nanoparticles in Liquid

Surface-Plasmon-Mediated Alloying for Monodisperse Au–Ag Alloy Nanoparticles in Liquid

Thin Film and Nanostructured Pd-Based Materials for Optical H2 Sensors: A Review

Plasmon effect on Pd/Au for optical sensing

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