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

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

doi:10.1016/j.jcis.2020.05.024

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

We describe the use of citrate to control the electroless plating of silver metal on silica nanoparticles. We find that the incorporation of relatively small amounts of citrate during the reduction of the Tollens’ reagent in the presence of sensitized silica nanoparticles induces a continuous transition from conformal to raspberry particle coatings. This transition is dependent on both the citrate concentration and the silver precursor concentration. We characterize this transition using electron microscopy and spectroscopy and use these results to confirm citrate's ability to cap and restrict silver growth. We compliment these structural measurements with in-situ quartz crystal microbalance experiments to quantify citrate's role as a complexing agent to slow silver reduction kinetics. These results confirm citrate's dual role in controlling the morphology of silver deposits produced in this work.

Original language	English (US)
Pages (from-to)	376-384
Number of pages	9
Journal	Journal of Colloid And Interface Science
Volume	576
DOIs	https://doi.org/10.1016/j.jcis.2020.05.024
State	Published - Sep 15 2020

Funding

Funding for this work was provided in part by Northwestern University and J. Chen would like to thank the Murphy Fellow’s program for partial support during this period. This work made use of the EPIC facility of Northwestern University’s NUANCE Center, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205); the MRSEC program (NSF DMR-1720139) at the Materials Research Center; the International Institute for Nanotechnology (IIN); the Keck Foundation ; and the State of Illinois , through the IIN. This work made use of the Jerome B. Cohen X-Ray Diffraction Facility supported by the MRSEC program of the National Science Foundation (DMR-1720139) at the Materials Research Center of Northwestern University.

Keywords

Capping agent
Complexing agent
Electroless plating
Nanoparticle
Silica
Silver
Sodium citrate

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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title = "Control over electroless plating of silver on silica nanoparticles with sodium citrate",

abstract = "We describe the use of citrate to control the electroless plating of silver metal on silica nanoparticles. We find that the incorporation of relatively small amounts of citrate during the reduction of the Tollens{\textquoteright} reagent in the presence of sensitized silica nanoparticles induces a continuous transition from conformal to raspberry particle coatings. This transition is dependent on both the citrate concentration and the silver precursor concentration. We characterize this transition using electron microscopy and spectroscopy and use these results to confirm citrate's ability to cap and restrict silver growth. We compliment these structural measurements with in-situ quartz crystal microbalance experiments to quantify citrate's role as a complexing agent to slow silver reduction kinetics. These results confirm citrate's dual role in controlling the morphology of silver deposits produced in this work.",

keywords = "Capping agent, Complexing agent, Electroless plating, Nanoparticle, Silica, Silver, Sodium citrate",

author = "Chen, {Jeffrey E.} and Qifeng Wang and Shull, {Kenneth R.} and Richards, {Jeffrey J.}",

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doi = "10.1016/j.jcis.2020.05.024",

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T1 - Control over electroless plating of silver on silica nanoparticles with sodium citrate

AU - Chen, Jeffrey E.

AU - Wang, Qifeng

AU - Shull, Kenneth R.

AU - Richards, Jeffrey J.

PY - 2020/9/15

Y1 - 2020/9/15

N2 - We describe the use of citrate to control the electroless plating of silver metal on silica nanoparticles. We find that the incorporation of relatively small amounts of citrate during the reduction of the Tollens’ reagent in the presence of sensitized silica nanoparticles induces a continuous transition from conformal to raspberry particle coatings. This transition is dependent on both the citrate concentration and the silver precursor concentration. We characterize this transition using electron microscopy and spectroscopy and use these results to confirm citrate's ability to cap and restrict silver growth. We compliment these structural measurements with in-situ quartz crystal microbalance experiments to quantify citrate's role as a complexing agent to slow silver reduction kinetics. These results confirm citrate's dual role in controlling the morphology of silver deposits produced in this work.

AB - We describe the use of citrate to control the electroless plating of silver metal on silica nanoparticles. We find that the incorporation of relatively small amounts of citrate during the reduction of the Tollens’ reagent in the presence of sensitized silica nanoparticles induces a continuous transition from conformal to raspberry particle coatings. This transition is dependent on both the citrate concentration and the silver precursor concentration. We characterize this transition using electron microscopy and spectroscopy and use these results to confirm citrate's ability to cap and restrict silver growth. We compliment these structural measurements with in-situ quartz crystal microbalance experiments to quantify citrate's role as a complexing agent to slow silver reduction kinetics. These results confirm citrate's dual role in controlling the morphology of silver deposits produced in this work.

KW - Capping agent

KW - Complexing agent

KW - Electroless plating

KW - Nanoparticle

KW - Silica

KW - Silver

KW - Sodium citrate

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JO - Journal of Colloid And Interface Science

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

Abstract

Funding

Keywords

ASJC Scopus subject areas

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