Optimal electroless plating rate enhancement techniques for the fabrication of low cost dense nickel/ceramic composite membranes

Agarwal, Amrita; Pujari, Murali; Uppaluri, R.; Verma, Anil

doi:10.1016/j.ceramint.2013.06.056

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…The XRD patterns of the ceramic support are similar to that outlined in our previous work. 8 The metallic nickel peaks appeared at diffraction angles of 2θ = 44·5° and 51·8° (Pdf No. 00-004-0850).…”

Section: Resultsmentioning

confidence: 99%

“…Specific inferences gained from the experimental investigations include: (i) a reduction in total plating time by 50%; (ii) better performance of coupled sonication and surfactant baths with respect to surfactant induced and sonication induced ELP baths 8 in terms of faster pore densification and minimum metal film thickness; (iii) the efficacy of cationic surfactant in comparison with anionic surfactant to achieve desired combinatorial plating characteristics and (iv) optimal cationic surfactant concentration refers to 4 CMC for which maximum PPD/δ was obtained. The optimal combinatorial plating characteristics correspond to pore densification (73·4%), metal film thickness (8·4 μm) and plating efficiency (89·9%) with 4 CMC cationic surfactant concentration.…”

Section: Discussionmentioning

confidence: 99%

“…Details with respect to the evaluation of these parameters have been presented elsewhere. 8 Percent pore densification in % was expressed as follows…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, dropwise contacting pattern of the reducing agent has been facilitated to reduce the plating time for one step by 50% (30 min) as compared to the 1 h plating time reported previously. 8 For all experiments, plating was carried out in SSOEP baths with dropwise addition of reducing agent and bulk addition of the surfactant. The plating characteristics were evaluated in terms of plating inefficiency, metal film thickness (δ) and PPD.…”

Section: Methodsmentioning

confidence: 99%

“…The XRD patterns of the ceramic support are similar to that outlined in our previous work. 8 The metallic nickel peaks appeared at The existence of quartz peaks also suggests the ineffectiveness of the surfactant in providing higher pore densification. Such peaks were not identified for the membrane fabricated with the CTAB surfactant.…”

Section: Surface Characterisationmentioning

confidence: 99%

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Rate enhanced electroless fabrication of nickel ceramic composite membranes

Agarwal

Pujari

Uppaluri

et al. 2015

Surface Engineering

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Elaborating upon the role of surfactant and sonication, this work addresses the combinatorial plating characteristics for the fabrication of nickel ceramic composite membranes. Specific novelty corresponds to controlled addition of hydrazine hydrate as a reducing agent to nickel electroless plating bath. The experimental investigations evaluated the optimality of solution concentrations of cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulphate surfactants during coupled sonication and surfactant based electroless plating. Among both surfactants, CTAB surfactant with a solution concentration of 4 CMC provided maximum combinations of pore densification (73?4%), metal film thickness (8?4 mm) and plating efficiency (89?9%). In all, it was observed that with CTAB surfactant the pore densification and plating efficiencies increased with increasing surfactant solution concentration from 1-4 CMC and were maximum at 4 CMC which drastically decreased at 6 CMC respectively probably due to surfactant adsorption on the substrate surface.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Details with respect to the evaluation of these parameters have been presented elsewhere. 8 Percent pore densification in % was expressed as follows…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Surface Characterisationmentioning

confidence: 99%

See 3 more Smart Citations

Rate enhanced electroless fabrication of nickel ceramic composite membranes

Agarwal

Pujari

Uppaluri

et al. 2015

Surface Engineering

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Dual‐Function Electrocatalytic and Macroporous Hollow‐Fiber Cathode for Converting Waste Streams to Valuable Resources Using Microbial Electrochemical Systems

et al. 2018

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Dual-function electrocatalytic and macroporous hollow-fiber cathodes are recently proposed as promising advanced material for maximizing the conversion of waste streams such as wastewater and waste CO to valuable resources (e.g., clean freshwater, energy, value-added chemicals) in microbial electrochemical systems. The first part of this progress report reviews recent developments in this type of cathode architecture for the simultaneous recovery of clean freshwater and energy from wastewater. Critical insights are provided on suitable materials for fabricating these cathodes, as well as addressing some challenges in the fabrication process with proposed strategies to overcome them. The second and complementary part of the progress report highlights how the unique features of this cathode architecture can solve one of the intrinsic bottlenecks (gas-liquid mass transfer limitation) in the application of microbial electrochemical systems for CO reduction to value-added products. Strategies to further improve the availability of CO to microbial catalysts on the cathode are proposed. The importance of understanding microbe-cathode interactions, as well as electron transfer mechanisms at the cathode-cell and cell-cell interface to better design dual-function macroporous hollow-fiber cathodes, is critically discussed with insights on how the choice of material is important in facilitating direct electron transfer versus mediated electron transfer.

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