In Situ Synthesis of Porous Carbons by Using Room-Temperature, Atmospheric-Pressure Dielectric Barrier Discharge Plasma as High-Performance Adsorbents for Solid-Phase Microextraction.
A one-step, template-free method is described to synthesize porous carbons (PCs) in situ on a metal surface by using a room-temperature, atmospheric-pressure dielectric barrier discharge (DBD) plasma. This method not only features high efficiency, environmentally friendliness, and low cost and simple equipment, but also can conveniently realize large-area synthesis of PCs by only changing the design of the DBD reactor. The synthesized PCs have a regulated nestlike morphology, and thus, provide a high specific surface area and high pore volume, which result in excellent adsorption properties. Its applicability was demonstrated by using a PC-coated stainless-steel fiber as a solid-phase microextraction (SPME) fiber to preconcentrate polycyclic aromatic hydrocarbons (PAHs) prior to analysis by gas chromatography with flame ionization detection (GC-FID). The results showed that the fiber exhibited excellent enrichment factors (4.1×10(4) to 3.1×10(5)) toward all tested PAHs. Thus, the PC-based SPME-GC-FID provides low limits of detection (2 to 20 ng L(-1)), good precision (<7.8%), and good recoveries (80-115%) for ultra-sensitive determination of PAHs in real water samples. In addition, the PC-coated fiber could be stable enough for more than 500 replicate extraction cycles.
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (P.R. China), Fax: (+86) 28-8541-2907.
Yao
Y
Lin
Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064 (P.R. China).
Li
L
Wu
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (P.R. China), Fax: (+86) 28-8541-2907.
Kailai
K
Xu
Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064 (P.R. China).
Yunfei
Y
Tian
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (P.R. China), Fax: (+86) 28-8541-2907.|Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064 (P.R. China).
Xiandeng
X
Hou
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (P.R. China), Fax: (+86) 28-8541-2907. abinscu@scu.edu.cn.
Chengbin
C
Zheng
carbon; hydrocarbons; mesoporous materials; plasma chemistry; solid-phase synthesis