Inorganic metallodielectric materials fabricated using two single-step methods based on the Tollen's process

Peterson, M.; Bouwman, J.; Chen, Aiqing; Deutsch, Miriam

doi:10.1016/j.jcis.2006.10.013

Cited by 43 publications

(37 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The physicochemical methods involved in production of metal-based nanoparticles mainly include chemical reduction, thermal treatment, irradiation and laser ablation (Peterson et al, 2007;Tsuji et al, 2002;Sun and Luo, 2005;Shao and Yao, 2006). But these methods are usually associated with certain disadvantages such as requirement of expensive equipments and the use of toxic reducing agents like sodium borohydride and N,N dimethylformamide which produce hazardous effects on environment and health.…”

Section: Methods Of Synthesismentioning

confidence: 99%

Biosynthesis of silver nanoparticles by endophytic fungi: Its mechanism, characterization techniques and antimicrobial potential

Sandhu¹,

Shukla²,

Shukla³

2017

Afr. J. Biotechnol.

View full text Add to dashboard Cite

Nanotechnology has rapidly developed as an important field of modern research, generating most promising applications in electronics and medicine. It involves different approaches for the synthesis and application of nanoparticles having dimension smaller than 100 nm. Nanoparticles are the fundamental building blocks for preparing many nanostructured materials and devices. Therefore, there is an enormous interest in developing safe, cost effective and ecofriendly techniques for synthesis of nanoparticles. Biological synthesis has emerged as an attractive alternative to overcome the side effects accompanied with physical and chemical methods of synthesis. This led to the development of new branch of nanotechnology called "green nanotechnology" or "nanobiotechnology" which combines biological principles with physical and chemical procedures to generate eco-friendly nanosized particles with specific functions. Various biological entities could be employed for the biosynthesis of nanoparticles including plant, algae, fungi, yeast, bacteria and viruses. Recently, much attention has been given on exploring fungi as potent biofactories for synthesis of silver nanoparticles since they possess numerous bioactive properties which find variety of applications in the field of biomedicine. Its use in the form of effective antimicrobial agent and disinfectant is known since time immemorial. The present chapter emphasize on the richness of endophytic fungal diversity and their role in biosynthesis of silver nanoparticles. It gives detailed overview about the mechanism of synthesis, characterization techniques involved in analysis of silver nanoparticles and biomedical application of silver nanoparticles with special reference to their antimicrobial potential.

show abstract

Section: Methods Of Synthesismentioning

confidence: 99%

Biosynthesis of silver nanoparticles by endophytic fungi: Its mechanism, characterization techniques and antimicrobial potential

Sandhu¹,

Shukla²,

Shukla³

2017

Afr. J. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…Silica particles were coated with silver by modifying the procedure described in reference (Peterson et al, 2007). We used a much lower silver concentration Finally, particles were redispersed in ethanol and stored in a refrigerator.…”

Section: Silver Coatingmentioning

confidence: 99%

“…In particular, much interest has been placed on the coating of dielectric particles with metal nanoparticles 5 (Jiang and Liu, 2003;Jackson and Halas, 2001;Brito-Silva et al, 2013;Peterson et al, 2007). The resulting properties of these composite materials depend largely on their structure (Preston and Signorell, 2009;Tzounis et al, 2014;Pan et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The resulting properties of these composite materials depend largely on their structure (Preston and Signorell, 2009;Tzounis et al, 2014;Pan et al, 2014). For example, the surface plasmon resonance of silver-coated silica particles changes from a single peak to multiple peaks or a single broad peak 10 depending on the connectivity among the silver nanoparticles making up the shell (Peterson et al, 2007;Preston and Signorell, 2009). Similarly, the antimi-crobial activity of silver particles in the shell depends on their size (Markova et al, 2012;Kedziora et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Two of the most common chemistries used are the reduction of silver nitrate by polyvinylpyrrolidone (PVP) (Lee et al, 2006) and the reduction of diammine 45 silver ([Ag(NH 3 ) 2 ] + ) by formaldehyde or glucose (Peterson et al, 2007;Pan et al, 2014;Homan et al, 2010). In the latter method the Tollens' reagent…”

mentioning

confidence: 99%

See 2 more Smart Citations

Coating nonfunctionalized silica spheres with a high density of discrete silver nanoparticles

Purdy

Muscat

2016

J Nanopart Res

View full text Add to dashboard Cite

Reducing AgNO 3 by glucose at basic pH coated the surface of silica spheres with a high density of hemispherical silver nanoparticles (average diameter 3.2±1 nm). A much lower silver concentration than is standard favored heterogeneous nucleation of silver on the silica surface at the expense of homogeneous nucleation in solution. The slow growth rate of the nuclei promoted the formation of discrete silver particles rather than a continuous shell. Based on scanning electron microscopy and transmission electron microscopy, the surface coverage of silver seed particles was as high as 25% at 10• C without prior functionalization of the silica. The particles were composed of metallic silver based on x-ray photoelectron spectroscopy. There was a sharp increase in the silver surface coverage and decrease in the particle size when the temperature was raised from 5 • C to 10 • C and the amount of silica was decreased from 0.2 to 0.025 V/V%. The size was controlled by the diffusion barrier through the ion shell surrounding the silica spheres and by maintaining reaction conditions where the particles on the surface compete for silver.

show abstract

The Langmuir‐Blodgett Approach to Making Colloidal Photonic Crystals from Silica Spheres

Bardosova¹,

Pemble²,

Povey³

et al. 2010

Advanced Materials

172

118

View full text Add to dashboard Cite

The area of colloidal photonic crystal research has attracted enormous attention in recent years as a result of the potential of such materials to provide the means of fabricating new or improved photonic devices. As an area where chemistry still predominates over engineering the field is still in its infancy in terms of finding real applications being limited by ease of fabrication, reproducibility and 'quality'- for example the extent to which ordered structures may be prepared over large areas. It is our contention that the Langmuir-Blodgett assembly method when applied to colloidal particles of silica and perhaps other materials, offers a way of overcoming these issues. To this end the assembly of silica and other particles into colloidal photonic crystals using the Langmuir-Blodgett (LB) method is described and some of the numerous papers on this topic, which have been published, are reviewed. It is shown that the layer-by-layer control of photonic crystal growth afforded by the LB method allows for the fabrication of a range of novel, layered photonic crystals that may not be easily assembled using any other approach. Some of the more interesting of these structures, including so-called heterostructured photonic crystals comprising of layers of spheres having different diameters are presented and their optical properties described. Finally, we offer our comments as to future applications of this interesting technology.

show abstract

Inorganic metallodielectric materials fabricated using two single-step methods based on the Tollen's process

Cited by 43 publications

References 50 publications

Biosynthesis of silver nanoparticles by endophytic fungi: Its mechanism, characterization techniques and antimicrobial potential

Biosynthesis of silver nanoparticles by endophytic fungi: Its mechanism, characterization techniques and antimicrobial potential

Coating nonfunctionalized silica spheres with a high density of discrete silver nanoparticles

The Langmuir‐Blodgett Approach to Making Colloidal Photonic Crystals from Silica Spheres

Contact Info

Product

Resources

About