Adsorption of albumin by gold nanoparticles: Equilibrium and thermodynamics studies

Maleki, Mahdi; Moradi, Omid; Tahmasebi, Sadaf

doi:10.1016/j.arabjc.2012.10.009

Cited by 41 publications

(22 citation statements)

References 49 publications

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“…Reduction in adsorption with increase in temperature has also been reported by Yuan et al, (2007), Maleki et al, (2012)and Hagiwara et al, (2015) and the observed reduction in adsorption with increase in temperature was also associated with reduced mobility of the molecules and exothermic sorption at increased temperature. However, the effect of temperature on greenzyme and rhamnolipid adsorption can also be influenced by thermodynamic of the adsorption process specific to their system.…”

Section: Effect Of Temperature On Adsorption Of Rhamnolipid and Greensupporting

confidence: 67%

“…(Norde and Lyklema, 1978;Wahlgren and Arnebrant, 1991;Dubey, 2005) while some others have observed decreased adsorption e.g. (Mitra and Chattoraj, 1979;Yuan et al, 2007;Ladan, 2008;Maleki et al, 2012;Hagiwara et al, 2015), yet others have observed both effects (Dillman and Miller, 1973) and even non effect (Addesso and Lund, 1997) with increased temperature. This suggests that different biosurfactants show different thermal characteristics based on their source bacteria (Kuznetsov and Oppenheimer, 2012).…”

Section: Effect Of Temperature On Adsorption Of Rhamnolipid and Greenmentioning

confidence: 99%

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Comparative Study on Adsorption of Biologically Generated Surface Active Agents on Carbonate and Sandstone Rock Surfaces

Udoh¹

2019

Int.J.Curr.Res.Aca.Rev.

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Article Info Surfactant adsorption at rock-fluid interface is fundamental to wettability alteration that is relevant to enhanced oil recovery process but the extent of this adsorption can also impact the economic viability of the surfactant application in the process. In this paper, adsorptions of two biologically generated surfactants (rhamnolipid and greenzyme) on carbonate and sandstone rock surfaces have been studied and reported. The rocks' main components and physicochemical makeup were determined with the use of X-ray diffraction and scanning electron microscopy. The compositional analyses of sandstone and carbonate rocks show the dominant components as quartz and calcite respectively. From the adsorption investigations, rhamnolipid tends to show higher surface activity than greenzyme. It also shows stronger affinity for sandstone rock surface than carbonate while greenzyme shows stronger affinity for carbonate surface. Furthermore, decrease in adsorptions of rhamnolipid and greenzyme with increase in temperature and decrease in salinity was observed in all the systems. Finally, the adsorption models suggest rhamnolipid adsorption process to be mono-layer in nature, while greenzyme adsorption tends to be monolayer at low adsorption and heterogeneous at high adsorption.

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Section: Effect Of Temperature On Adsorption Of Rhamnolipid and Greensupporting

confidence: 67%

Section: Effect Of Temperature On Adsorption Of Rhamnolipid and Greenmentioning

confidence: 99%

Comparative Study on Adsorption of Biologically Generated Surface Active Agents on Carbonate and Sandstone Rock Surfaces

Udoh¹

2019

Int.J.Curr.Res.Aca.Rev.

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“…Its reason can be explained by the increase of the kinetic energy of BSA molecules in solution along with the rise in temperature since the increasing kinetic energy caused the decrease of the interaction between EAC surface and protein molecules. Analogous trends have been presented by other researchers [37][38]. …”

Section: Effect Of Temperaturesupporting

confidence: 59%

Adsorption of bovine serum albumin onto activated carbon prepared from Elaeagnus stone

Geçgel¹,

Üner²

2018

Bull. Chem. Soc. Eth.

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ABSTRACT. In this study, the adsorption of bovine serum albumin was studied using the activated carbon prepared from Elaeagnus stone with chemical activation. Elaeagnus stone activated carbon was characterized using the point of zero charge, Fourier transform infrared spectra, Brunauer-Emmet-Teller method, scanning electron microscopy, and elemental analysis. The BET surface area of Elaeagnus stone activated carbon obtained by using 30% ZnCl2 (w/w) was determined to be 1588 m 2 /g. The effects of adsorbent dosages, contact time, initial bovine serum albumin concentrations, temperature and pH on the adsorption were investigated. The optimum values of adsorbent dosage, pH, and contact time were determined to be 1 mg/mL, 5, and 160 min for 500 mg/L BSA concentration, respectively. Additionally, the studies of adsorption equilibrium and kinetics were performed. The best fitting model from the experimental data was determined to be Langmuir model and the adsorption follows a pseudo-first-order kinetic model.

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“…This is in contrast to other systems where the adsorption process is strongly entropically disfavoured although enthalpically favoured, allowing for a spontaneous process. 27,39 However, another report showed that a differentially coated magnetite, using carboxymethyl chitosan, was enthalpically disfavoured while being entropically favoured like this current example, 47 and this has been observed for other surfaces as well, including CoCrMo 48 and silica. 49 Entropically driven protein adsorption is largely driven by the desolvation of the protein and nanoparticle.…”

Section: Adsorption Thermodynamic Studiesmentioning

confidence: 68%

“…38 This high q e is much greater than that reported for other materials, i.e., 44.4 mg/g for TiO 2 , 38 30 mg/g for hydroxyapatite particles, 11 and 200 mg/g for gold. 39 This exceptional value suggests that a very significant protein corona is formed around the nanoparticle that must involve multi-layers of BSA forming around the particle core.…”

Section: Effect Of Adsorbent Dosementioning

confidence: 99%

Adsorption of bovine serum albumin (BSA) by bare magnetite nanoparticles with surface oxidative impurities that prevent aggregation

Rahdar

Ahmadi

et al. 2019

Can. J. Chem.

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Bare, uncoated magnetite nanoparticles, synthesized using an electrochemical surfactant-free synthesis, have highly oxidized surfaces that prevent aggregation. These particles have demonstrated highly intriguing biological activity showing extremely potent antibiotic activity against both gram-positive and gram-negative bacteria with little toxicity to rats. This difference in activity could be ascribed to the nature of the protein corona. The kinetics and thermodynamics of the binding of bovine serum albumin (BSA), used as a model serum protein, to these magnetite nanoparticles were analyzed. There is no significant change in particle diameter by dynamic light scattering following adsorption, indicating corona formation does not induce aggregation. The maximum adsorption capacity of the particles was determined to be 300 mg of BSA per gram of magnetite. The particles are able to adsorb 90% of the BSA at protein concentrations as high as 500 mg/L. The adsorption is best described using a pseudo second order model and a Langmuir Type III isotherm model. Thermodynamic analysis showed that the process is entropically driven and is spontaneous at all tested temperatures and conditions. However, it appears to be a weak to moderate physical adsorption. This moderate binding affinity could indicate the differential biological activity of these particles towards bacteria and mammalian cells and further support the contention that these are potentially useful new tools for targeting antibiotic-resistant bacteria.

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Adsorption of albumin by gold nanoparticles: Equilibrium and thermodynamics studies

Cited by 41 publications

References 49 publications

Comparative Study on Adsorption of Biologically Generated Surface Active Agents on Carbonate and Sandstone Rock Surfaces

Comparative Study on Adsorption of Biologically Generated Surface Active Agents on Carbonate and Sandstone Rock Surfaces

Adsorption of bovine serum albumin onto activated carbon prepared from Elaeagnus stone

Adsorption of bovine serum albumin (BSA) by bare magnetite nanoparticles with surface oxidative impurities that prevent aggregation

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