Effects of ultraviolet light on silver nanoparticle mobility and dissolution

Mittelman, Anjuliee M.; Fortner, John D.; Pennell, Kurt D.

doi:10.1039/c5en00145e

Cited by 50 publications

(46 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is worth mentioning here that the absorption peaks of the AgNPs lie in the range of 360 to 396 nm, in accordance with the absorption peaks reported in the literature. [55][56][57] These observations also conrmed that synthesized AgNPs of different particle sizes were formed with the different extracts.…”

Section: Uv-visible Spectroscopy (Uv-vis)mentioning

confidence: 58%

Green synthesis characterization and antimicrobial activity againstStaphylococcus aureusof silver nanoparticles using extracts of neem, onion and tomato

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Uv-visible Spectroscopy (Uv-vis)mentioning

confidence: 58%

Green synthesis characterization and antimicrobial activity againstStaphylococcus aureusof silver nanoparticles using extracts of neem, onion and tomato

et al. 2019

View full text Add to dashboard Cite

show abstract

“…We believe that this is a PDA/ethanol‐assisted Ag photo‐oxidation process (Figure e). It has been reported that Ag NPs can be oxidized to Ag + by oxygen under UVB irradiation, due to the formation of reactive oxygen species (ROS) under UV . However, this process is quite slow (several days) and inefficient.…”

Section: Resultsmentioning

confidence: 99%

UV‐Triggered Polydopamine Secondary Modification: Fast Deposition and Removal of Metal Nanoparticles

Zeng

Hou

et al. 2019

Adv Funct Materials

View full text Add to dashboard Cite

Since the first report in 2007, polydopamine (PDA) coating has shown great potential as a general and versatile method to create functional nanocoatings on arbitrary substrates. Slow kinetics and poor controllability of the coating and secondary modification processes, however, have limited the further development of this attractive method. In this work, it is demonstrated that UV irradiation at 365 nm significantly accelerates the process of secondary modification of a PDA-coated surface. The kinetics of both thiol and amine modifications of PDA are increased 12-fold via UV irradiation, while the kinetics of metal ion reduction at the PDA interface is increased more than 550 times. Moreover, it is demonstrated that irradiating a PDA/metal nanoparticle composite surface with UV light at 254 nm leads to dissolution of the deposited metal nanoparticles (MNPs). Finally, grayscale metallic patterns, dynamic deposition, and removal of MNPs on PDA surface are realized with the proposed method.

show abstract

“…Zeta potential of different samples were measured, as displayed in Table 2. The adsorption of citrates can decrease the zeta potential of particles [33,34]. Compared with TS precursor dispersed in water and TS precursor dispersed in citrate solution, the OS precursor shows the most negative zeta potential (−25.8 mV), which was caused by the adsorption between citrates and the precursor.…”

Section: Resultsmentioning

confidence: 97%

Hydrothermal Synthesis of (001) Facet Highly Exposed ZnO Plates: A New Insight into the Effect of Citrate

et al. 2019

View full text Add to dashboard Cite

In this work, two synthesis routes were applied to investigate the effect of citrates on the construction of the ZnO structure. Well-dispersed ZnO plates with (001) facet highly exposed were prepared via one-step hydrothermal route, while ZnO nanoparticles were obtained via two-step route. In one-step route, citrates were added before the formation of Zn(OH) 2 precursor, while citrates were added after the formation of Zn(OH) 2 . For the first time, the interaction between citrates and the Zn(OH) 2 precursor was investigated and citrates that participated in the formation of Zn(OH) 2 were the main cause for (001) facet exposed structure construction. A growth mechanism about the formation of ZnO plates in the presence of citrates was proposed. The as-prepared ZnO plates showed enhanced photocatalytic activity for the degradation of methylene blue (MB).

show abstract

Effects of ultraviolet light on silver nanoparticle mobility and dissolution

Abstract: Nanomaterials are subject to various physical, chemical, and biological transformations, necessitating a better understanding of the impact of “aging” processes on nanoparticle fate and transport in engineered and natural porous media.

Cited by 50 publications

References 50 publications

Green synthesis characterization and antimicrobial activity againstStaphylococcus aureusof silver nanoparticles using extracts of neem, onion and tomato

Green synthesis characterization and antimicrobial activity againstStaphylococcus aureusof silver nanoparticles using extracts of neem, onion and tomato

UV‐Triggered Polydopamine Secondary Modification: Fast Deposition and Removal of Metal Nanoparticles

Hydrothermal Synthesis of (001) Facet Highly Exposed ZnO Plates: A New Insight into the Effect of Citrate

Contact Info

Product

Resources

About