Green synthesis of a silver nanoparticle–graphene oxide composite and its application for As(iii) detection

RSC Advances ◽  
2014 ◽  
Vol 4 (28) ◽  
pp. 14432-14440 ◽  
Author(s):  
Riyaz Ahmad Dar ◽  
Ninad G. Khare ◽  
Daniel P. Cole ◽  
Shashi P. Karna ◽  
Ashwini Kumar Srivastava
Keyword(s):  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Green Synthesis ◽  
Silver Nanoparticle ◽  
Reducing Agent ◽  
Synthetic Approach ◽  
Stabilizing Agent ◽  
Oxide Composite ◽  
Beta Cyclodextrin

We report a facile and green synthetic approach to synthesize a silver nanoparticle (AgNPs)–graphene oxide (GO) composite using beta cyclodextrin as a stabilizing agent and ascorbic acid as a reducing agent.

Graphene Oxide Reduced and Dispersed by Polysaccharide

2013 ◽  
Vol 341-342 ◽  
pp. 233-236 ◽  
Author(s):  
Yong Qiang He ◽  
Ru Qiang Li ◽  
Di Wu ◽  
Yong Li Zhang ◽  
Jian Ping Gao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduce Graphene Oxide ◽  
Aqueous Dispersion ◽  
Reducing Agent ◽  
Reaction Conditions ◽  
Green Method ◽  
Stabilizing Agent ◽  
Optimum Reaction

An green method to reduce graphene oxide (RGO) was developed by using polysaccharide as both a reducing agent and a stabilizing agent. The RGO was characterized and the factors that affect the reduction of graphene oxide (GO) were explored to obtain optimum reaction conditions. Analysis shows that GO can be reduced at a comparatively low temperature by polysaccharide and forms a stable RGO aqueous dispersion owing to the dispersion of polysaccharide. This approach provides a new green method for GO reduction that has great value for graphene applications.

Green synthesis of dimension-controlled silver nanoparticle–graphene oxide with in situ ultrasonication

2014 ◽  
Vol 64 ◽  
pp. 326-332 ◽  
Author(s):  
K.S. Hui ◽  
K.N. Hui ◽  
D.A. Dinh ◽  
C.H. Tsang ◽  
Y.R. Cho ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Green Synthesis ◽  
Silver Nanoparticle

scholarly journals Silver–Graphene Oxide Nanohybrids for Highly Sensitive, Stable SERS Platforms

2021 ◽  
Vol 9 ◽  
Author(s):  
Mateusz Kasztelan ◽  
Anna Studzinska ◽  
Grażyna Zofia Żukowska ◽  
Barbara Pałys
Keyword(s):  
Raman Spectroscopy ◽  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Silver Nanoparticle ◽  
Surface Composition ◽  
Surface Enhanced Raman Spectroscopy ◽  
Ammonia Solution ◽  
Synthesis Conditions ◽  
Sers Enhancement ◽  
Surface Enhanced Raman

Graphene oxide–silver nanoparticle nanohybrids were synthesized by simple reduction of the silver nitrate and graphene oxide (GO) mixture in water using the mild reducing agent ascorbic acid. The concentration of ascorbic acid was varied to verify the possible influence of the GO surface composition on the efficiency of the hybrid material as substrates for surface enhanced Raman spectroscopy (SERS). Furthermore, the composites were conditioned in ammonia solution or in potassium hydroxide diluted solution. For comparison, the graphene oxide–silver nanoparticle composite has been synthesized using the ammonia-treated GO. All materials were characterized using spectroscopic and microscopic methods including UV–Vis, infrared, and Raman spectroscopy and scanning electron microscopy. The SERS efficiency of the nanohybrids was tested using 4-aminothiophenol (PATP). The optimal synthesis conditions were found. Ammonia and potassium peroxide drop-casted on the composite changed the SERS properties. The sample treated with KOH showed the best SERS enhancement. The variation of the SERS enhancement was correlated with the shape of the UV–Vis characteristics and the surface structure of the composites.

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