Nanostructured surfaces

Flexible Graphene Papers Doped with Dye Molecules for Electrochemical Sensing of Nitrite
Zeriş Aksu1, Murat Alanyalıoğlu1
1 Department of Chemistry, Sciences Faculty, Atatürk University, Erzurum, Turkey. 
E-mail: malanya@atauni.edu.tr

Free-standing graphene-based papers (GBPs) are very flexible, stable, and processable. So, GBPs are used as modular platform for many electrochemical approaches [1-3]. GBPs are usually doped with different materials to improve their electrochemical performance. This work reports the production of flexible and reduced graphene oxide (rGO) papers doped with various class of dye molecules [3]. Preparation procedure has been carried out by two steps: Firstly, vacuum filtration of a dispersion containing GO and dye molecule through a membrane. And then, reduction of free-standing GO/dye paper (See figure below) [3]. 

Characterization of these rGO/dye papers were achieved using numerous techniques and the best rGO/dye paper was successfully applied as amperometric sensor for determination of nitrite in both standard solutions and real samples.

1.	Dagci K., Alanyalioglu M. ACS Appl. Mater. Interfaces- 2016.-8.-P. 2713-2722.
2.	Xiao F., Li Y., Zan X., Liao K., Xu R., Duan H. Adv. Funct. Mater.- 2012.-22.-P. 2487-2494.
3.	Aksu Z., Alanyalioglu M. Electrochimica Acta- 2017.-258.-P. 1376-1386.