Graphene oxide-silver nanocomposite as SERS substrate for dye detection: Effects of silver loading amount and composite dosage

Ding, Guihong; Xie, Shi Jie; Liu, Ying; Wang, Li; Xu, Fugang

doi:10.1016/j.apsusc.2015.03.175

Cited by 56 publications

(25 citation statements)

References 27 publications

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“…Graphene produced by Li and colleagues in 2013 have peak G in 1597 cm −1 and peak D in 1358 cm −1 [26]. In Ding and colleagues study, peak G and D was in the range of 1600 and 1340 cm −1 , respectively [27]. SEM and TEM micrographs in Figs.…”

Section: Graphene Oxidementioning

confidence: 91%

Graphene oxide/silver nanohybrid: Optimization, antibacterial activity and its impregnation on bacterial cellulose as a potential wound dressing based on GO‐Ag nanocomposite‐coated BC

Mohammadnejad

Yazdian

Omidi

et al. 2018

Engineering in Life Sciences

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Recently, bacterial cellulose (BC) based wound dressing have raised significant interests in medical fields. However, to our best knowledge, it is apparent that the BC itself has no antibacterial activity. In this study, we optimized graphene oxide‐silver (GO‐Ag) nanohybrid synthesis using Response Surface Methodology and impregnate it to BC and carefully investigate their antibacterial activities against both the Gram‐negative bacteria Escherichia coli and the Gram‐positive bacteria Staphylococcus aureus. We discover that, compared to silver nanoparticles, GO‐Ag nanohybrid with an optimal GO suspension's pH and false[GOfalse]false[AgNO3false] ratio is much more effective and shows synergistically enhanced, strong antibacterial activities at rather low dose. The GO‐Ag nanohybrid is more toxic to E. coli than that to S. aureus. The antibacterial and mechanical properties of BC/GO‐Ag composite are further investigated.

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Section: Graphene Oxidementioning

confidence: 91%

Graphene oxide/silver nanohybrid: Optimization, antibacterial activity and its impregnation on bacterial cellulose as a potential wound dressing based on GO‐Ag nanocomposite‐coated BC

Mohammadnejad

Yazdian

Omidi

et al. 2018

Engineering in Life Sciences

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“…Generally, the chemical reduction process is conducted in a solution system containing three main components: metal precursors, graphene oxide, and reductant. For the reduction of Ag + ions, various reductants such as borohydride, sodium citrate, ascorbic acid, and dopamine are used in the composite synthesis. In addition, stabilizing/capping agents are used to control particle growth in some cases …”

Section: Synthesis Of Ag–graphene Nanocompositesmentioning

confidence: 99%

Advancement of Ag–Graphene Based Nanocomposites: An Overview of Synthesis and Its Applications

Zeng

Chen

et al. 2018

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Graphene has been employed as an excellent support for metal nanomaterials because of its unique structural and physicochemical properties. Silver nanoparticles (AgNPs) with exceptional properties have received considerable attention in various fields; however, particle aggregation limits its application. Therefore, the combination of AgNPs and graphene based nanocomposites (Ag-graphene based nanocomposites) has been widely explored to improve their properties and applications. Excitingly, enhanced antimicrobial, catalytic, and surface enhanced Raman scattering properties are obtained after their combination. In order to have a comprehensive knowledge of these nanocomposites, this Review highlights the chemical and biological synthesis of Ag-graphene nanocomposites. In particular, their applications as antimicrobial agents, catalysts, and sensors in biomedicine, agricultural protection, and environmental remediation and detection are covered. Meanwhile, the factors that influence the synthesis and applications are also briefly discussed. Furthermore, several important issues on the challenges and new directions are also provided for further development of these nanocomposites.

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“…The performance of SERS substrate depends largely on the size and density of metal nanoparticles. (Ding, Xie, Liu, Wang, & Xu, 2015) In order to obtain a better SERS performance, a series of GO/Ag nanocomposites which were synthesized with different reaction condition(the volume of AgNO 3 solution) were produced. As shown in However, as the amount of AgNO 3 solution increase to 4 ml, the surface coverage increases dramatically, but the particles sizes decrease obviously, as shown in Fig.1(B).…”

Section: Characterizationmentioning

confidence: 99%

Preparation of SERS-active substrates based on graphene oxide/silver nanocomposites for rapid zdetection of l-Theanine

Zheng

et al. 2017

Food Chemistry

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A kind of graphene oxide/silver (GO/Ag) nanocomposites with high Surface enhanced Raman scattering (SERS) activity were fabricated via a facile and green liquid phase reduction method. The synthesized materials were characterized in detail using various microscopic and spectroscopic techniques. In this method, the GO sheets worked as a holder which makes silver nanoparticles (AgNPs) aggregate to a particular morphology, and under a suitable dosage of silver ions, well-dispersed AgNPs on the surface of GO were obtained, which could generate more "hot spots" of SERS. Moreover, SERS technique based on the obtained GO/Ag nanocomposites was used as an effective way to detect l-Theanine. The detection limit was estimated to be as low as 10(-7)M, and a multivariate linear regression model for the concentration of l-Theanine was established. The optimal fitting equation is Y=5.6765+0.0307X1458-0.0267X1251.

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Graphene oxide-silver nanocomposite as SERS substrate for dye detection: Effects of silver loading amount and composite dosage

Cited by 56 publications

References 27 publications

Graphene oxide/silver nanohybrid: Optimization, antibacterial activity and its impregnation on bacterial cellulose as a potential wound dressing based on GO‐Ag nanocomposite‐coated BC

Graphene oxide/silver nanohybrid: Optimization, antibacterial activity and its impregnation on bacterial cellulose as a potential wound dressing based on GO‐Ag nanocomposite‐coated BC

Advancement of Ag–Graphene Based Nanocomposites: An Overview of Synthesis and Its Applications

Preparation of SERS-active substrates based on graphene oxide/silver nanocomposites for rapid zdetection of l-Theanine

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