Facile Synthesis of Nitrogen Self-Doped Porous Carbon Derived from Cicada Shell via KOH Activation for Simultaneous Detection and Removal of Cu2+ |
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| Authors: | Jin Zou Jiawei Liu Qi Yu Yansha Gao Shangxing Chen Xigen Huang Dongnan Hu Shuwu Liu Limin Lu |
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| Institution: | 1.East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, JXAU, Nanchang 330045, China; (J.Z.); (Q.Y.);2.Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China; (J.L.); (Y.G.); (X.H.); (S.L.) |
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| Abstract: | Sensitive detection and efficient removal of heavy metal ions with high toxicity and mobility are of great importance for environmental monitoring and control. Although several kinds of functional materials have been reported for this purpose, their preparation processes are complicated. Herein, nitrogen self-doped activated porous biochar (NAC) was synthesized in a facile process via an activation–carbonization strategy from cicada shell rich in chitin, and subsequently employed as an effective functional material for the simultaneous determination and removal of Cu2+ from aqueous media. With its unique porous structure and abundant oxygen-containing functional groups, along with the presence of heteroatoms, NAC exhibits high sensitivity for the electrochemical sensing of Cu2+ in concentrations ranging from 0.001 to 1000 μg·L−1, with a low detection limit of 0.3 ng·L−1. Additionally, NAC presents an excellent removal efficiency of over 78%. The maximum adsorption capacity is estimated at 110.4 mg/g. These excellent performances demonstrate that NAC could serve as an efficient platform for the detection and removal of Cu2+ in real environmental areas. |
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| Keywords: | cicada shell natural N-doped biochar heavy metal ion electrochemical detection adsorption |
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