Graphitic carbon nitride as high-resolution stationary phase for gas chromatographic separations.
This work presents the first example of utilization of graphitic carbon nitride (g-C3N4) as stationary phase for capillary gas chromatographic (GC) separations. The statically coated g-C3N4 column showed the column efficiencies of 3760 plates/m and weak polarity. Its resolving capability and retention behaviours were investigated by using the Grob test mixture, and mixtures of diverse types of analytes, and structural and positional isomers. The results showed superior separation performance of the g-C3N4 stationary phase for some critical analytes and preferential retention for aromatic analytes. Specifically, it exhibited high-resolution capability for aromatic and aliphatic isomers such as methylnaphthalenes and dimethylnaphthalenes, phenanthrene and anthracene and alkane isomers. In addition, g-C3N4 column showed excellent thermal stability up to 280°C and good repeatability with relative standard deviation (RSD) values less than 0.09% for intra-day, below 0.23% for inter-day and in the range of 1.9-8.4% for between-column, respectively. The advantageous separation performance shows the potential of g-C3N4 and related materials as stationary phase in GC and other separation technologies.
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China.
Yunzhong
Y
Zheng
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China. Electronic address: mlqi@bit.edu.cn.
Meiling
M
Qi
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China.
Ruonong
R
Fu
D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods; D006108:Graphite / Q000737:chemistry*; D006841:Hydrocarbons, Aromatic / Q000032:analysis / Q000737:chemistry; D007536:Isomerism; D009570:Nitriles / Q000737:chemistry*; D015203:Reproducibility of Results
D006841:Hydrocarbons, Aromatic; D009570:Nitriles; C011206:cyanogen; D006108:Graphite
Gas chromatography; Graphitic carbon nitride; Separation; Stationary phase