Qualitative analysis of reduction degree in reduced graphene oxide solution by femtosecond laser-induced breakdown spectroscopy

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Yang, Bo^1 ; Dong, Nannan^1 ; Wang, Shubo^1

School of Mechanical Engineering, Beijing Institute of Technology, Beijing

100081, China^1

关键词: New approaches;    Observed data;    Online detecting;    Oxygen content;    Qualitative analysis;    Radiated energies;    Reduced graphene oxides;    Reduction degree;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022020/pdf
DOI  :  10.1088/1757-899X/382/2/022020

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A new approach for the qualitative analysis of reduction degree through the ratio of carbon and oxygen (C:O) in reduced graphene oxide (r-GO) solution by femtosecond laser-induced breakdown spectroscopy (fs-LIBS) was proposed. Firstly, graphene oxide solution was reduced by irradiation with fs laser beams with different energies; subsequently, the carbon and oxygen content was detected through the changes in the intensity of carbon and oxygen obtained by fs-LIBS. The ratio (C:O) and the oxygen content of the observed data by LIBS were associated with the fs laser radiated energies; it was evident that the ratio increased and the oxygen content decreased with the incremented fs laser radiated energies. Fs-LIBS realized online detecting and qualitative analysis of the reduction degree of GO solutions. This method displays a prompt and time-saving way for detecting the reduction degree of r-GO solutions and can promote the applications of r-GO with different reduction degrees.