The Morphology of Electroless Ni Deposition on a Colloidal Pd(II) Catalyst

Brandow, Susan L.; Dressick, Walter J.; Marrian, C. R. K.; Chow, Gan‐Moog; Calvert, Jeffrey M.

doi:10.1149/1.2044280

Cited by 99 publications

(79 citation statements)

References 4 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As expected, column widening and separation of the columnar NTF PPX-C filament clusters templates deposition of a somewhat rougher Ni film (i.e., ∼40 nm) than that observed for Ni films (i.e., ∼35 nm) templated by the helical NTF, at least for the plating conditions used here. However, because EL Ni film morphology is sensitive to ligand and Pd II surface concentrations, [25] as well as plating conditions, [16] these factors offer the potential to readily control Ni roughness. For example, preliminary experiments show that helical NTFs treated for only ∼17 h by pyridine (aq) solution provide rougher Ni films (i.e., ∼68 nm), which is consistent with this argument.…”

mentioning

confidence: 99%

Noncovalent Deposition of Nanoporous Ni Membranes on Spatially Organized Poly(p‐xylylene) Film Templates

et al. 2007

View full text Add to dashboard Cite

Nickel metal is widely used in catalytic, [1,2] energy storage, [3,4] and optical applications [5,6] due to its favorable physicochemical properties. Although Ni morphology, topology, and surface chemistry are critically important for these applications, their control is limited by: 1) Ni deposition conditions and treatments, [7][8][9] and 2) properties and available architectures of sacrificial metallization templates, [1,6,[10][11][12][13] (Fig. 1B-C). Here, we present our initial results relating to the fabrication and characterization of nanoporous Ni membranes templated by conformal electroless (EL) metallization of poly(chloro-p-xylylene) (PPX-C) NTFs. EL metallization of polymer films is typically a multistep process [16] involving: 1) chemical or mechanical surface microroughening to promote metal adhesion; 2) adsorption of Pd/Sn core/shell colloids to the surface; 3) selective dissolution of the Sn II/IV b-hydroxy shell segment not anchoring the colloid to the surface to expose the catalytic Pd 0 core; and finally 4) solution deposition of EL metal. For NTFs, however, the need to minimize potential damage to film nanoarchitectures ( Fig. 1), eliminate environmentally hazardous Sn salts, and reduce process steps and costs necessitates consideration of an alternate EL plating procedure. In one such process, [17][18][19][20][21] solvent-templated sites tailored to adsorb catalyst-binding pyridine ligands are first created at a polymer surface during film formation. Partitioning of pyridine from aqueous solution into these sites, driven by maximization of hydrophobic van der Waals and p-p interactions with the polymer aromatic functional groups that define the sites, noncovalently binds pyridine ligands at the polymer surface. Because the hydrophilic N site of the adsorbed pyridine remains accessible to aqueous solution, covalent binding of Pd II EL COMMUNICATION

show abstract

mentioning

confidence: 99%

Noncovalent Deposition of Nanoporous Ni Membranes on Spatially Organized Poly(p‐xylylene) Film Templates

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The details of preparation of this solution are described in the reference 56 . Hydrolyzed Pd colloids were formed in this solution.…”

Section: Liquid Phase Patterning Of Magnetite Particulate Thin Films mentioning

confidence: 99%

Nanofabrication of Metal Oxide Patterns Using Self-Assembled Monolayers

Masuda¹

2011

Nanofabrication

View full text Add to dashboard Cite

“…The control of the size of adsorbed catalysts is also critical in controlling the particle size of nanostructured electroless Ni deposits. Smaller catalysts were bound to the chemically modified substrate surface and led to a reduction of particle size in the deposits by 3-4 times [13]. Electroless deposition was also used to deposit CoNiP films consisted of oriented hcp crystallites [14].…”

Section: Aqueous Electroless Depositionmentioning

confidence: 99%

Electroless Deposited Nanostructured NiCo Films

Chow

2000

Nanostructured Films and Coatings

View full text Add to dashboard Cite

Nanostructured metal films and coatings with unique properties can be synthesized using solution chemistry. In this paper, the non-aqueous electroless polyol synthesis, characterization and properties of NiCo films are discussed. IntroductionNanostructured films and coatings with unique properties can be fabricated by many methods. Physical vapor techniques, such as thermal evaporation and sputtering, are generally line-of-sight processes suited for deposition on planar surfaces. The limitation in these processes is caused by the high sticking coefficients of atoms that cannot readily move around after impacting the surface. On the other hand, chemical vapor deposition and solution chemistry methods are generally free from such limitation, since the atoms have smaller sticking coefficients and higher mobility at the surface. Thus, these techniques are suitable for depositing films on not only planar but also hidden and complex surfaces. Further, high-cost vacuum technology is not needed in wet chemistry processing.Using solution approach, nanostructured ceramic films can be prepared by solgel method, and metal films can be synthesized using electrodeposition and electroless deposition.Electrochemical technology finds many applications ranging from traditional surface finishing to high-tech fabrication of advanced materials for microelectronics and media storage [1]. AQUEOUS ELECTRODEPOSITIONIn electrodeposition [2], metal precursors in the solution are reduced by the application of an electric current, resulting in deposition of the metal film on the conductive substrate. Aqueous electrolytes are extensively used because water is a

show abstract

The Morphology of Electroless Ni Deposition on a Colloidal Pd(II) Catalyst

Cited by 99 publications

References 4 publications

Noncovalent Deposition of Nanoporous Ni Membranes on Spatially Organized Poly(p‐xylylene) Film Templates

Noncovalent Deposition of Nanoporous Ni Membranes on Spatially Organized Poly(p‐xylylene) Film Templates

Nanofabrication of Metal Oxide Patterns Using Self-Assembled Monolayers

Electroless Deposited Nanostructured NiCo Films

Contact Info

Product

Resources

About