Bovine serum albumin adsorption on nano-rough platinum surfaces studied by QCM-D

Dolatshahi-Pirouz, Alireza; Rechendorff, Kristian; Hovgaard, Mads Bruun; Foss, Morten; Chevallier, J.; Besenbacher, Flemming

doi:10.1016/j.colsurfb.2008.05.010

Cited by 146 publications

(106 citation statements)

References 40 publications

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“…TiO 2 /NCC composite showed TiO 2 particles to be well dispersed and so reside equally on all regions on the surface. The polymerization onto TiO 2 /NCC (Figure 1(d)) led to a heterogeneous rough surface, and this surface roughness leads to different prominent adsorption phases during the adsorption process [18]. Figure 2 shows the XRD patterns of cellulose, NC, TiO 2 /NCC, and P(Py-co-An)-TiO 2 /NCC.…”

Section: Surface Morphology Analysismentioning

confidence: 99%

Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO₂/Nanocellulose Composite under Solar Light Irradiation

Anirudhan

Rejeena

2015

Journal of Materials

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The present study describes the feasibility of a novel adsorbent cum photocatalyst, poly(pyrrole-co-aniline)-coated TiO 2 /nanocellulose composite (P(Py-co-An)-TiO 2 /NCC), to remove eosin yellow (EY) from aqueous solutions. The removal of EY was investigated by batch adsorption followed by photocatalysis. The effect of various adsorption parameters like adsorbent dose, pH, contact time, initial concentration, and ionic strength has been optimized for treating effluents from the dye industry. Adsorption of EY reached maximum at pH 4.5 and complete removal of dye was achieved using 3.5 g/L of P(Py-co-An)-TiO 2 /NCC. Adsorption equilibrium data were fitted with Langmuir and Fritz-Schlunder isotherm models and the kinetics of adsorption follows a secondorder mechanism. The adsorption capacity of P(Py-co-An)-TiO 2 /NCC was found to be 3.39 × 10 −5 mol/g and reached equilibrium within 90 min. The photocatalytic degradation of adsorbed dye under sunlight was possible and about 92.3% of dye was degraded within 90 min. The reusability of P(Py-co-An)-TiO 2 /NCC was also investigated. The results indicate that P(Py-co-An)-TiO 2 /NCC is the best material for the wiping out of EY from aqueous solutions.

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Section: Surface Morphology Analysismentioning

confidence: 99%

Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO₂/Nanocellulose Composite under Solar Light Irradiation

Anirudhan

Rejeena

2015

Journal of Materials

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“…This implies that the adsorbed BSA or fibrinogen on Pt surface constitute a much stiffer layer, possibility with a lower water content. 15 The PEGylated Pt interface demonstrates excellent resistance to both BSA and fibrinogen adsorption ( Fig. 1B and C), with a typical endpoint ∆ƒ of <~2 for BSA uptake, and ~7.2 Hz for fibrinogen uptake.…”

Section: Qcm-dmentioning

confidence: 99%

PEGylation of platinum bio-electrodes

Yue

Molino

Liu

et al. 2013

Electrochemistry Communications

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Controlling protein interactions at the implanted electrode interface is becoming an important strategy for the management of foreign body responses that have proven to be detrimental to the long-term performance of neural prosthesis. In this study, PEGylation was conducted on platinum bio-electrodes to render the surface protein-resistant. The PEGylated electrode was investigated using a quartz crystal microbalance-dissipation, electrochemical impedance spectroscopy and cyclic voltammetiy. AbstractControlling protein interactions at the implanted electrode interface is becoming an important strategy for the management of foreign body responses that have proven to be detrimental to the long-term performance of neural prosthesis. In this study, PEGylation was conducted on platinum bio-electrodes to render the surface protein-resistant. The PEGylated electrode was investigated using a quartz crystal microbalance-dissipation, electrochemical impedance spectroscopy and cyclic voltammetry.

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“…The adsorbed amount of proteins from 100% fetal bovine serum (FBS) on the polymer brush surfaces at 37 °C was quantified using QCM-D measurement (Q-Sense, Gothenburg, Sweden) [14,15,17]. To measure the protein adsorption mass on the surface, the polymer brush layers were formed at the surface of QCM-D gold sensor.…”

Section: Protein Adsorption Measurementmentioning

confidence: 99%

“…Hydration state at the surfaces was evaluated by measurement of relaxation time and diffusion coefficient using proton nuclear magnetic resonance spectroscopy ( 1 H-NMR) [12,13]. Protein adsorption onto the surfaces was measured with a quartz crystal microbalance with dissipation monitoring (QCM-D) measurement [14,15]. Finally, the relationship between protein adsorption and dynamics of water was discussed.…”

Section: Introductionmentioning

confidence: 99%

Effects of dynamics of water molecules at hydrophilic polymer brush surfaces on protein adsorption behavior

Inoue

Ishihara

2012

Trans. Mat. Res. Soc. Japan

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The suppression of protein adsorption must be required for a surface of biomaterials to avoid undesirable biological reactions. Understanding the interactions between proteins and surfaces is necessary to construct new biomaterials that have ultimate nonbiofouling property. Protein adsorption causes in an aqueous medium, therefore, we focused on the hydration state at the interface of the aqueous medium with proteins and the contacting materials, and investigated the effects of hydration state on protein adsorption behavior towards the surface. We could successfully establish the method for evaluation of dynamics of water molecules in the vicinity of the surface by using proton nuclear magnetic resonance spectroscopy for the hydrated polymer brush layermodified micro-silica beads. The zwitterionic and cationic polymer brush surfaces were used for the measurement. The results clearly indicated that the dynamics of water molecules determined protein adsorption onto the surfaces. Thus, the polymer brush surfaces with hydration layer and high-diffusion of water molecules in the layer, such as phosphorylcholine group-bearing polymer brush surface, were effective to inhibit protein adsorption.

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Bovine serum albumin adsorption on nano-rough platinum surfaces studied by QCM-D

Cited by 146 publications

References 40 publications

Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO₂/Nanocellulose Composite under Solar Light Irradiation

Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO₂/Nanocellulose Composite under Solar Light Irradiation

PEGylation of platinum bio-electrodes

Effects of dynamics of water molecules at hydrophilic polymer brush surfaces on protein adsorption behavior

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Bovine serum albumin adsorption on nano-rough platinum surfaces studied by QCM-D

Cited by 146 publications

References 40 publications

Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO2/Nanocellulose Composite under Solar Light Irradiation

Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO2/Nanocellulose Composite under Solar Light Irradiation

PEGylation of platinum bio-electrodes

Effects of dynamics of water molecules at hydrophilic polymer brush surfaces on protein adsorption behavior

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Product

Resources

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Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO₂/Nanocellulose Composite under Solar Light Irradiation

Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO₂/Nanocellulose Composite under Solar Light Irradiation