Control over electroless plating of silver on silica nanoparticles with sodium citrate

Chen, Jeffrey E.; Wang, Qifeng; Shull, Kenneth R.; Richards, Jeffrey J.

doi:10.1016/j.jcis.2020.05.024

Cited by 21 publications

(10 citation statements)

References 48 publications

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“…[31] Ni and Co work well with hypophosphite, aminoboranes and hydrazine, [27] which is also used for depositing platinum group metals. [6] Coinage metal plating often employs organic reducers, notably formaldehyde, [82,85] but also milder variants such as tartrate, [54] glucose, [35,86] polyphenols, [87] ascorbic [41,88,89] or glyoxylic acid. [90] Due to its extraordinary nobility, gold can even be plated with H 2 O 2 .…”

Section: Reducing Agentmentioning

confidence: 99%

“…Strongly adsorbing anions such as cyanide or iodide can also represent potent stabilizers. [100] In nanomaterials plating, compounds such as halides, [53] citrate [86,106] or 4mercaptobenzoic acid, [88] which are known to adsorb onto the plated metals, have proven valuable for limiting their deposition, [53,86] for changing the morphology from dense to (nano)particulate coatings, [53,86] and for growing anisotropic nanostructures. [53,88] Considering the large surface area, small crystallite size and defectiveness of such products, it is clear that kinetic control [104] represents a key strategy for plating high-energy products of particular nanotechnological interest.…”

Section: Additivesmentioning

confidence: 99%

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Electroless Plating of Metal Nanomaterials

Muench

2021

ChemElectroChem

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Electroless plating is commonly associated with metallizing macroscopic work pieces, but also represents a surprisingly powerful nanomanufacturing tool. This review details the technique's use for creating nanomaterials of arbitrary dimensionality, ranging from nanoparticles over nanotubes, nanowires, and ultrathin films to nanostructured lattices, focusing on the solution chemistry and mechanistic aspects. The synthesis of defined nanostructures serves as overarching perspective, which is enriched by drawing connections to and insights from related fields. Strategies for controlling the size, shape, crystallinity, porosity, composition, and arrangement of electrolessly plated nanostructures are outlined, including templating (which harnesses the method's exceptional conformality to guide and limit deposit formation), the complementary approach of selective growth, tailored seeding, and bath design. Being able to strike convincing compromises between material quality and ease of preparation, electroless nanoplating has a distinct potential to facilitate the application of metal nanomaterials.

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Section: Reducing Agentmentioning

confidence: 99%

Section: Additivesmentioning

confidence: 99%

Electroless Plating of Metal Nanomaterials

Muench

2021

ChemElectroChem

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“…The formation of a silver layer on a glass surface has been well-known for several decades and described in multiple studies [39][40][41][42][43][44] and patents [45][46][47] by applying various techniques. The most-common silver-deposition reaction is based on Tollens' reagent, which is a colorless solution of a diamminesilver(I) complex that is created by a mixture of silver nitrate, ammonia, and alkaline [48][49][50][51][52][53]. The silver-layer formation is highly influenced by the various conditions of the deposition procedure.…”

Section: Effect Of Different Deposition Conditions On the Efficiency mentioning

confidence: 99%

The Incorporation of Amplified Metal-Enhanced Fluorescence in a CMOS-Based Biosensor Increased the Detection Sensitivity of a DNA Marker of the Pathogenic Fungus Colletotrichum gloeosporioides

2020

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Half of the global agricultural fresh produce is lost, mainly because of rots that are caused by various pathogenic fungi. In this study, a complementary metal-oxide-semiconductor (CMOS)-based biosensor was developed, which integrates specific DNA strands that allow the detection of enoyl-CoA-hydratase/isomerase, which is a quiescent marker of Colletotrichum gloeosporioides fungi. The developed biosensor mechanism is based on the metal-enhanced fluorescence (MEF) phenomenon, which is amplified by depositing silver onto a glass surface. A surface DNA strand is then immobilized on the surface, and in the presence of the target mRNA within the sample, the reporter DNA strand that is linked to horseradish peroxidase (HRP) enzyme will also bind to it. The light signal that is later produced from the HRP enzyme and its substrate is enhanced and detected by the coupled CMOS sensor. Several parameters that affect the silver-deposition procedure were examined, including silver solution temperature and volume, heating mode, and the tank material. Moreover, the effect of blocking treatment (skim milk or bovine serum albumin (BSA)) on the silver-layer stability and nonspecific DNA absorption was tested. Most importantly, the effect of the deposition reaction duration on the silver-layer formation and the MEF amplification was also investigated. In the study findings a preferred silver-deposition reaction duration was identified as 5–8 min, which increased the deposition of silver on the glass surface up to 13-times, and also resulted in the amplification of the MEF phenomenon with a maximum light signal of 50 relative light units (RLU). It was found that MEF can be amplified by a customized silver-deposition procedure that results in increased detection sensitivity. The implementation of the improved conditions increased the biosensor sensitivity to 3.3 nM (4500 RLU) with a higher detected light signal as compared to the initial protocol (400 RLU). Moreover, the light signal was amplified 18.75-, 11.11-, 5.5-, 11.25-, and 3.75-times in the improved protocol for all the tested concentrations of the target DNA strand of 1000, 100, 10, 3.3, and 2 nM, respectively. The developed biosensor system may allow the detection of the pathogenic fungus in postharvest produce and determine its pathogenicity state.

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“…(3-mercaptopropyl)trimethoxysilane (MPTMS), mercaptopropyltriethoxy-silane (MPTES), which causes the surface of the dielectric to more easily adsorb metal NPs or adsorb o-phthaldialdehyde (OPA) to determine various biogenic amines [22][23][24]. Other reports also applied positively charged Sn + to sensitive silica and reduced metal from ions into atoms [13,25]. These reports confirm that SiO 2 surface modification is effective and feasible.…”

Section: Introductionmentioning

confidence: 83%

“…Before metal NPs deposition on SiO 2 , the matrix needs to be modified. Some reports [12,[21][22][23][24][25] mentioned that various silane coupling agents are used. The silane coupling agent is an organosilicon compound, which contains two groups of different chemical properties in the molecule at the same time, one of which is a hydrolysis group, including an alkoxy group, vinyl, etc., and the other end has NH 2 , SH, COOH, CH 3 , and other functional groups.…”

Section: Introductionmentioning

confidence: 99%

The Photocatalytic Performance of Ag-Decorated SiO2 Nanoparticles (NPs) and Binding Ability between Ag NPs and Modifiers

Chen

Lee

2022

Coatings

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This study demonstrates a method for synthesizing Ag-decorated SiO2 NPs, which combined surface modification and electroless plating. The binding ability between the Ag NPs and modifiers was also investigated for the first time. The resulting products were characterized by electron microscopy and a UV–Visible spectrophotometer, which confirmed that OH− modified composite has the most uniform coating of Ag NPs and the largest Ag elemental composition. The efficiency of degrading methylene blue (MB) under visible light for 60 min was above 99%. The normalized reaction constant also confirmed the experimental results. In brief, this study verifies an optimal surface modifier of the binding ability with Ag NPs and the feasibility of this structure to effectively absorb the solar spectrum and further apply it to the photodegradation reaction.

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Control over electroless plating of silver on silica nanoparticles with sodium citrate

Cited by 21 publications

References 48 publications

Electroless Plating of Metal Nanomaterials

Electroless Plating of Metal Nanomaterials

The Incorporation of Amplified Metal-Enhanced Fluorescence in a CMOS-Based Biosensor Increased the Detection Sensitivity of a DNA Marker of the Pathogenic Fungus Colletotrichum gloeosporioides

The Photocatalytic Performance of Ag-Decorated SiO2 Nanoparticles (NPs) and Binding Ability between Ag NPs and Modifiers

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