The interaction between casein micelles and gold nanoparticles

“…Some used deionised water throughout the experiments [8-11], others used doubly distilled water [4, 20, 22], nanopure water [1-3], ultrapure water [25], and Milli-Q water [5-7, 15, 19, 21, 23]. In this experiment, deionised water and Milli-Q water were used.…”

Section: Discussionmentioning

confidence: 99%

“…However, many synthesis AuNPs without going through the dialysis process [1-3, 5-8, 11-25]. Experiments of synthesising AuNPs were conducted with and without the dialysis process, and both AuNPs solutions looked visibly the same after 3 months of synthesising.…”

Section: Discussionmentioning

confidence: 99%

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A visual tutorial on the synthesis of gold nanoparticles

A¹,

Bansal²

2010

Biomed. Imaging Interv. J.

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Many papers have been written on the synthesis of gold nanoparticles but very few included pictures of the process, and none of them used video to show the whole process of synthesis. This paper records the process of synthesis of gold nanoparticles using video clips. Every process from cleaning of glassware, an important step in the synthesis of metallic nanoparticles, to the dialysis process is shown. It also includes the preparation of aqua regia and the actual synthesis of gold nanoparticles. In some papers, the dialysis process was omitted, but in this paper, it is included to complete the whole process as it is being used for purification.

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“…Among all the capping agents, casein protein is frequently used due to its good stabilizing effect and low toxicity [6,[13][14][15]. Recent studies show that water chemistry can influence the physicochemical properties of SNPs.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical properties of protein-modified silver nanoparticles in seawater

Zhong

2013

Int Nano Lett

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This study investigated the physicochemical properties of silver nanoparticles stabilized with casein protein in seawater. UV-vis spectrometry, dynamic light scattering (DLS), and transmission electron microscopy (TEM) were applied to measure the stability of silver nanoparticles in seawater samples. The obtained results show an increased aggregation tendency of silver nanoparticles in seawater, which could be attributed its relatively high cation concentration that could neutralize the negatively charges adsorbed on the surface of silver nanoparticles and reduce the electrostatic repulsion forces between nanoparticles. Similarly, due to the surface charge screening process, the zeta potential of silver nanoparticles in seawater decreased. This observation further supported the aggregation behavior of silver nanoparticles. This study also investigated the dissolution of silver nanoparticles in seawater. Result shows that the silver nanoparticle dissolution in DI water is lower than in seawater, which is attributed to the high Cl − concentration present in seawater. As Cl − can react with silver and form soluble AgCl complex, dissolution of silver nanoparticles was enhanced. Finally, this study demonstrated that silver nanoparticles are destabilized in seawater condition. These results may be helpful in understanding the environmental risk of discharged silver nanoparticles in seawater conditions.

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The interaction between casein micelles and gold nanoparticles

Cited by 36 publications

References 34 publications

Dense aqueous colloidal gold nanoparticles prepared from highly concentrated precursor solution

Dense aqueous colloidal gold nanoparticles prepared from highly concentrated precursor solution

A visual tutorial on the synthesis of gold nanoparticles

Physicochemical properties of protein-modified silver nanoparticles in seawater

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