光致发光
量子产额
傅里叶变换红外光谱
大气压力
荧光
大气压等离子体
材料科学
等离子体
兴奋剂
红外线的
分析化学(期刊)
碳纤维
吸收(声学)
喷射(流体)
光化学
化学
化学工程
光电子学
有机化学
光学
复合数
复合材料
工程类
地质学
物理
海洋学
热力学
量子力学
作者
Mina Mohammadzaheri,Vahid Siahpoush,Asghar Asgari
标识
DOI:10.1002/ppap.202200089
摘要
Abstract This study develops a new approach for the synthesis of fluorescent N‐doped carbon quantum dots (CQDs), using cold atmospheric pressure plasma jet. Herein, the CQDs were synthesized with two plasma exposure times of 30 and 60 min. The UV‐Vis absorption spectrum confirms the existence of carbonic core and surface functional groups. The Fourier transform infrared spectrum shows that carbonyl groups and amide groups exist on the surface of CQDs. Depending on the plasma exposure time, the mean average sizes of CQDs are 3.63 and 5.45 nm with strong photoluminescence emission. Generally, our results indicated that using different mechanisms for plasma discharge, lead to different physical and chemical properties of produced plasma and consequently of synthesized CQDs. The synthesized N‐doped CQDs exhibited strong fluorescence and higher quantum yield compared to previous reports.
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