Controlled synthesis of gold nanosnakes assisted by poly(vinyl pyrrolidone)–sodium dodecyl sulphate aggregations

Ren, Yueping; Qi, Jingjing; Wu, Mengjie; Fang, Yun

doi:10.1080/17458080.2011.607191

Cited by 3 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the synthesis of metal nanostructures, a surface stabilizer is integral for growth as it helps prevent nanostructures from aggregating and accelerates a specific direction during the growth process. A common polymer (poly (vinyl pyrrolidone) (PVP)) and long-chain alkyl (cetyl trimethyl ammonium bromide, CTAB/cetyl trimethyl ammonium chloride (CTAC)) often used at a temperature not lower than room temperature (~25 °C), which is not the optimum surface stabilizer for synthesizing SNSs at lower temperature (<25 °C) or even 0 °C [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. Hence, sodium dodecyl sulfate (SDS), with a high degradation degree, is our preferred candidate for surface stabilizer when using a natural polymer sodium alginate (SA) as an assistant to precisely control the size and shape of SNSs [ 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Silver Nanoplates with the Assistance of Natural Polymer (Sodium Alginate) Under 0 °C

Yang

Zhang

et al. 2020

Materials

View full text Add to dashboard Cite

Some special conditions are important for chemical syntheses, such as high temperature and the medium used; unfortunately, uncontrollable influences are introduced during the process, resulting in unexpectedly low repeatability. Herein, we report a facile, environmentally friendly, stable, and repeatable methodology for synthesizing silver nanoplates (SNPs) at 0 °C that overcomes these issues and dramatically increases the yield. This method mainly employs sodium dodecyl sulfate (SDS) and sodium alginate (SA) as the surface stabilizer and assistant, respectively. Consequently, we produced hexagonal nanoplates and tailed nanoplates, and the characterization showed that SA dominates the clear and regular profiles of nanoplates at 0 °C. The tailed nanoplates, over time, showed the growth of heads and the dissolving of tails, and inclined to the nanoplates without tails. The synthesis method for SNPs used in this study—0 °C without media—showed high repeatability. We confirmed that these special conditions are not required for the synthesis of silver nanostructures (SNSs). Furthermore, we constructed a new method for preparing noble metal nanostructures and proved the possibility of preparing metal nanostructures at 0 °C.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of Silver Nanoplates with the Assistance of Natural Polymer (Sodium Alginate) Under 0 °C

Yang

Zhang

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…Its main reason is the formation of the nanoscale soft template in solution using a composite system, which provides a growth platform for the synthesis of nanomaterial with different morphology and performance varies. To study the physical and chemical properties of these composite systems for materials and their mechanism of action has become one of the hot spots to improve the current material research . For improving the properties of metal‐oxide gas‐sensitive materials, various methods are used including one or more surfactants, and multiple types of composite systems as solution additives to adjust material morphology .…”

Section: Introductionmentioning

confidence: 99%

Effect of PVP on gas‐sensing properties of ZnO micro/nanostructure materials in SDS‐PVP composite

Chen

Cui

et al. 2019

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

ZnO is often used as gas sensor. In order to increase the sensitivity of the sensors, many methods are used to change the gas-sensing properties. In this paper, ZnO was synthesized by hydrothermal method using Zn (NO 3 ) 2 as a zinc source. Sodium lauryl sulfate (SDS) and polyvinylpyrrolidone (PVP) were added into the system to control microstructure and surface morphology of ZnO nanoparticles. The SDS was kept constant, and the PVP was changed. The morphology and composite were investigated by field emission scanning electron microscopy and X-ray diffraction.The chemical valence of the elements was determined by X-ray photoelectron spectroscopy. The sensing properties were investigated at different PVP components. It is found that ZnO has a red zinc structure. When the m SDS :m PVP = 1:1, the sensing sensitivity is best. The mechanism of equivalent matching structure optimization performance is proposed. K E Y W O R D S equivalent matching structure, gas sensor, nanoscale soft template, polyvinylpyrrolidone, sodium lauryl sulfate F I G U R E 3 XPS of: (A) Zn 2p spectra and (B) O 1s spectra of S 1 , S 2 , and S 3 [Color figure can be viewed at wileyonlinelibrary.com] F I G U R E 4 Optimal operating temperature of three sets of annealing samples. (A) Sensitivity vs operating temperature at 100 ppm ethanol atmosphere. (B) Sensitivity comparison of ethanol, ammonia, formaldehyde, methanol, and benzene. (C) Comparison curves of sensitivity and concentration [Color figure can be viewed at wileyonlinelibrary.com] | 1465 CHEN Et al.the ZnO nanoparticles are easy to gather in the SDS-PVP soft template. XRD and XPS indicate that the SDS and PVP addition will not affect the crystal structure. The experiments show that the sensitivity and selectivity of ZnO increase when m SDS :m PVP = 1:1. This research provides more potential ideas for other metal oxides as gas sensor. ORCID Chengyou Liuhttps://orcid.org/0000-0002-4363-6354

show abstract

Review of Noble Metal Nanoparticle-Based Colorimetric Sensors for Food Safety Monitoring

Putri,

Prabowo,

Dewi

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Food safety, particularly concerning foods contaminated by toxic chemicals, has emerged as a pervasive societal concern. The prevalence of food contaminants has spurred both scientific communities and industries to develop highly sensitive and selective sensors for rapid and precise food authentication. Noble metal nanoparticles (NPs) have garnered significant attention in this regard due to their exceptional properties, including high sensitivity, selectivity, stability, target binding affinity, and versatility for modification to detect specific contaminants. Moreover, the readout of such sensors is relatively straightforward, as their resulting color change can be observed with the naked eye. This Review aims to delve into the current strategies involving various noble metal NPs as colorimetric nanosensors in food safety monitoring applications. It begins by elucidating their working principles, encompassing localized surface plasmon resonance (LSPR), enzymebased approaches, and other methodologies. Subsequently, the material properties of commonly utilized noble metal NPs, including those of gold, silver, palladium, platinum, and copper, are meticulously examined, providing comprehensive overviews of the benefits and drawbacks associated with each material. Furthermore, this Review summarizes the latest use cases of noble metal NPs in diverse food safety monitoring applications, ranging from the detection of heavy metal contaminants to veterinary and pesticide drug residues and foodborne pathogens. Lastly, it addresses the remaining challenges in this field and proposes feasible solutions, offering insights into future research directions.

show abstract

Controlled synthesis of gold nanosnakes assisted by poly(vinyl pyrrolidone)–sodium dodecyl sulphate aggregations

Cited by 3 publications

References 26 publications

Synthesis of Silver Nanoplates with the Assistance of Natural Polymer (Sodium Alginate) Under 0 °C

Synthesis of Silver Nanoplates with the Assistance of Natural Polymer (Sodium Alginate) Under 0 °C

Effect of PVP on gas‐sensing properties of ZnO micro/nanostructure materials in SDS‐PVP composite

Review of Noble Metal Nanoparticle-Based Colorimetric Sensors for Food Safety Monitoring

Contact Info

Product

Resources

About