Facile Synthesis of Nitrogen Self-Doped Porous Carbon Derived from Cicada Shell via KOH Activation for Simultaneous Detection and Removal of Cu<sup>2+</sup>
Jin Zou,
Jiawei Liu,
Qi Yu,
Yansha Gao,
Shangxing Chen,
Xigen Huang,
Dongnan Hu,
Shuwu Liu,
Limin Lu
Affiliations
Jin Zou
East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, JXAU, Nanchang 330045, China
Jiawei Liu
Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
Qi Yu
East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, JXAU, Nanchang 330045, China
Yansha Gao
Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
Shangxing Chen
East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, JXAU, Nanchang 330045, China
Xigen Huang
Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
Dongnan Hu
East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, JXAU, Nanchang 330045, China
Shuwu Liu
Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
Limin Lu
East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, JXAU, Nanchang 330045, China
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.
