Formation mechanism of robust silver nanoparticle film with superhydrophobicity

Guo, Zhaohui; Liu, Weimin

doi:10.1063/1.3525574

Cited by 12 publications

(5 citation statements)

References 31 publications

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“…S5, supporting information). Water θ is known to influence by hydrophilicity and surface roughness [36]. The lowering of water θ values of the blend membranes is mainly due to the enhanced hydrophilic character of the membranes.…”

Section: Membranementioning

confidence: 99%

Stimuli responsive and low fouling ultrafiltration membranes from blends of polyvinylidene fluoride and designed library of amphiphilic poly(methyl methacrylate) containing copolymers

Bera

Kumar

Parui

et al. 2015

Journal of Membrane Science

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Section: Membranementioning

confidence: 99%

Stimuli responsive and low fouling ultrafiltration membranes from blends of polyvinylidene fluoride and designed library of amphiphilic poly(methyl methacrylate) containing copolymers

Bera

Kumar

Parui

et al. 2015

Journal of Membrane Science

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“…Reduced silver by the coated glucosamine origins an interesting hydrophobic surface with a water contact angle of 104 ± 1°. This hydrophobic surface of metallic silver can be attributed to the nanostructured silver coating (similar to the lotus leaves). , Some authors have previously discussed the hydrophobic and superhydrophobic behavior of surfaces, and it seems to be clearly related to multivalued topography where air is trapped beneath the liquid in the valleys. ,− In fact, this hydrophobic effect can maximize the antibacterial effect of silver by acting as an antifouling surface to reduce bacterial adhesion.…”

Section: Results and Discussionmentioning

confidence: 99%

Design of a Nanostructured Active Surface against Gram-Positive and Gram-Negative Bacteria through Plasma Activation and in Situ Silver Reduction

Gilabert‐Porres

Martí²,

Calatayud³

et al. 2015

ACS Appl. Mater. Interfaces

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Nowadays there is an increasing focus for avoiding bacterial colonization in a medical device after implantation. Bacterial infection associated with prosthesis implantation, or even along the lifetime of the implanted prosthesis, entails a serious problem, emphasized with immunocompromised patients. This work shows a new methodology to create highly hydrophobic micro-/nanostructured silver antibacterial surfaces against Gram-positive and Gram-negative bacteria, using low-pressure plasma. PDMS (polydimethylsiloxane) samples, typically used in tracheal prosthesis, are coated with PFM (pentafluorophenyl methacrylate) through PECVD (plasma enhance chemical vapor deposition) technique. PFM thin films offer highly reactive ester groups that allow them to react preferably with amine bearing molecules, such as amine sugar, to create controlled reductive surfaces capable of reducing silver salts to a nanostructured metallic silver. This micro-/nanostructured silver coating shows interesting antibacterial properties combined with an antifouling behavior causing a reduction of Gram-positive and Gram-negative bacteria viability. In addition, these types of silver-coated samples show no apparent cytotoxicity against COS-7 cells.

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“…In this process, the silicon etching and the metal deposition occur simultaneously. An overall formula was proposed by Guo and Liu:150 The authors showed the possibility to deposit silver nanoclusters, which size was controllable with the deposition time. The surfaces produced by this method were superhydrophobic (θ w = 152°; α ≈ 8°) without adding hydrophobic materials.…”

Section: Reduction Processesmentioning

confidence: 99%

Superhydrophobic Surfaces by Electrochemical Processes

Darmanin¹,

Givenchy²,

Amigoni³

et al. 2013

Advanced Materials

415

200

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This review is an exhaustive representation of the electrochemical processes reported in the literature to produce superhydrophobic surfaces. Due to the intensive demand in the elaboration of superhydrophobic materials using low-cost, reproducible and fast methods, the use of strategies based on electrochemical processes have exponentially grown these last five years. These strategies are separated in two parts: the oxidation processes, such as oxidation of metals in solution, the anodization of metals or the electrodeposition of conducting polymers, and the reduction processed such as the electrodeposition of metals or the galvanic deposition. One of the main advantages of the electrochemical processes is the relative easiness to produce various surface morphologies and a precise control of the structures at a micro- or a nanoscale.

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Formation mechanism of robust silver nanoparticle film with superhydrophobicity

Cited by 12 publications

References 31 publications

Stimuli responsive and low fouling ultrafiltration membranes from blends of polyvinylidene fluoride and designed library of amphiphilic poly(methyl methacrylate) containing copolymers

Stimuli responsive and low fouling ultrafiltration membranes from blends of polyvinylidene fluoride and designed library of amphiphilic poly(methyl methacrylate) containing copolymers

Design of a Nanostructured Active Surface against Gram-Positive and Gram-Negative Bacteria through Plasma Activation and in Situ Silver Reduction

Superhydrophobic Surfaces by Electrochemical Processes

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