Facile Synthesis of Nitrogen Self-Doped Porous Carbon Derived from Cicada Shell via KOH Activation for Simultaneous Detection and Removal of Cu2+
Open Access
- 15 July 2022
- Vol. 27 (14), 4516
- https://doi.org/10.3390/molecules27144516
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.Keywords
Funding Information
- National Natural Science Foundation of China (21665010, 31960295, 51862014, 31741103, and 51302117)
- Academic and technical leader of major disciplines in Jiangxi Province Training Program Leading Talents Project (20204BCJ22022, 20202ACBL213009 and 20212BAB203019)
- Natural Science Foundation of Nanchang City (No. 2018CXTD014)
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