Palladium nanostructures from galvanic displacement as hydrogen peroxide sensor

Gutés, Albert; Laboriante, Ian; Carraro, Carlo; Maboudian, Roya

doi:10.1016/j.snb.2010.03.084

Cited by 40 publications

(18 citation statements)

References 26 publications

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“…erefore, in the last decade, there is a tendency to find alternative methods, among which is GR [24][25][26]. Mostly, GR is carried out in an aqueous solution, where the hydrogen release on cathode regions and the etching of a substrate occur besides the main process of metal recovery as byprocesses [25,[27][28][29][30]. is complicates the controlled formation of MNPs, as a necessary condition for the surface modification.…”

Section: Introductionmentioning

confidence: 99%

Deposition of Gold Nanoparticles via Galvanic Replacement in DMSO and Their Influence on Formation of Silicon Nanostructures

Shepida

Кuntyi

Nichkalo

et al. 2019

Advances in Materials Science and Engineering

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The process of gold nanoparticle (AuNP) precipitation on the silicon (Si) surface by galvanic replacement (GR) in dimethyl sulfoxide (DMSO) solution depending on the concentration of H[AuCl4], temperature, and duration was investigated. It is established that with an increase in the concentration of [AuCl4]− ions (from 2 to 8 mM H[AuCl4]), both the size of AuNPs and their surface coverage density are increased. It is demonstrated that an increase in temperature causes the size of AuNPs to increase from 40 to 80 nm at 40°C to 80–120 and 120–160 nm at 50 and 60°C, respectively. As the duration of the GR process increases, there is a tendency of the particle size growth. Under the studied deposition conditions, the organic aprotic solvent medium contributes to the formation of spherical AuNPs with 2D substrate filling. It is established that the AuNPs deposited on the silicon surface catalyze the process of metal-assisted chemical etching (MacEtch), which makes it possible to obtain Si nanostructures in the form of nanowire arrays.

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Section: Introductionmentioning

confidence: 99%

Deposition of Gold Nanoparticles via Galvanic Replacement in DMSO and Their Influence on Formation of Silicon Nanostructures

Shepida

Кuntyi

Nichkalo

et al. 2019

Advances in Materials Science and Engineering

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“…Platinum (Pt) and palladium (Pd) are noble transition metals, whose excellent catalytic and electrochemical properties have been widely used in modern technologies, including chemical and biosensing [ 33 , 34 , 35 ], photocatalysis [ 36 , 37 ], electrocatalysis [ 38 , 39 , 40 , 41 ], and Si nanowire growth [ 4 , 42 ]. Although they are promising candidates for a variety of applications, they are not favorably suited for detection via Raman spectroscopy, also called as Surface Enhanced Raman Spectroscopy (SERS).…”

Section: Introductionmentioning

confidence: 99%

Exploring the Efficacy of Platinum and Palladium Nanostructures for Organic Molecule Detection via Raman Spectroscopy

Tran

Whale

Padalkar

2018

Sensors

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Noble transition metals, like palladium (Pd) and platinum (Pt), have been well-known for their excellent catalytic and electrochemical properties. However, they have been considered non-active for surface enhanced Raman spectroscopy (SERS). In this work, we explore the scattering contributions of Pd and Pt for the detection of organic molecules. The Pd and Pt nanostructures were synthesized on silicon substrate using a modified galvanic displacement method. The results show Pt nanoparticles and dendritic Pd nanostructures with controlled density and size. The influence of surfactants, including sodium dodecyl sulfate and cetyltrimethylammonium bromide, on the size and morphology of the nanostructures was investigated. The Pd and Pt nanostructures with a combination of large size and high density were then used to explore their applicability for the detection of 10−5 M Rhodamine 6G and 10−2 M paraoxon.

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“…Hence, nonenzymatic H 2 O 2 sensors based on Pd NPs are also given interest and studied. Pd NPs used for such purpose are commonly synthesized in a solution by a chemical route, such as electrodeposition [26][27][28], or chemical reductions of suitable Pd-containing species [25,29,30]. In such cases, the NPs bind loosely with the electrode and aggregate easily, which results in poor electron transfer and leads to reproducibility and stability problems.…”

Section: Introductionmentioning

confidence: 99%

Pd nanoparticle-modified electrodes for nonenzymatic hydrogen peroxide detection

Wang¹,

Chen²,

Liao³

et al. 2016

Nano Online

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A hydrogen peroxide (H 2 O 2) sensor based on Pd nanoparticles (NPs) and glassy carbon electrodes (GCEs) is fabricated. Pd NPs are deposited on GCEs by using a gas phase cluster beam deposition technique. The NP-deposited electrodes show enhanced electrocatalytic activity in reduction of H 2 O 2. The electrode with an optimized NP coverage of 85 % has a high selective and stable nonenzymatic sensing ability of H 2 O 2 with a low detection limit (3.4 × 10 −7 M), high sensitivity (50.9 μA mM −1), and a wide linear range (from 1.0 × 10 −6 to 6.0 × 10 −3 M). The reduction peak potential of the electrode is close to −0.12 V, which enables high selective amperometric detection of H 2 O 2 at a low applied potential.

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Palladium nanostructures from galvanic displacement as hydrogen peroxide sensor

Cited by 40 publications

References 26 publications

Deposition of Gold Nanoparticles via Galvanic Replacement in DMSO and Their Influence on Formation of Silicon Nanostructures

Deposition of Gold Nanoparticles via Galvanic Replacement in DMSO and Their Influence on Formation of Silicon Nanostructures

Exploring the Efficacy of Platinum and Palladium Nanostructures for Organic Molecule Detection via Raman Spectroscopy

Pd nanoparticle-modified electrodes for nonenzymatic hydrogen peroxide detection

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