Hierarchical Porous Tubular Biochar Based Sensor for Detection of Trace Lead (II)
Xue Chen, Kunchao Lu, Donghai Lin, Yan Li, Shiyu Yin, Zhiyi Zhang, Meihua Tang, Guosong Chen
Abstract
Abstract Hierarchical porous tubular biochar (PTBC) was prepared by selectively removing lignin simply according to reverse the pyrolysis sequence of cellulose. The properties of the PTBC sample were characterized by XRD, SEM, TEM, Raman spectra, cyclic voltammetry and electrochemical impedance spectroscopy. The electrochemical performances of PTBC modified on the screen‐printing electrode illustrated excellent detection of lead ions (lead (II)) in water with the linear range (0.5–120 μg/L) and the detection limit (0.02 μg/L) by in‐situ bismuth film square wave anode stripping voltammetry.
Topics & Concepts
BiocharAnodic stripping voltammetryDetection limitDielectric spectroscopyMaterials scienceCyclic voltammetryPyrolysisRaman spectroscopyElectrochemistryVoltammetryAnodePorosityElectrodeLinear rangeAnalytical Chemistry (journal)Chemical engineeringChemistryChromatographyComposite materialEngineeringPhysicsOpticsPhysical chemistryElectrochemical Analysis and ApplicationsAnalytical Chemistry and SensorsGas Sensing Nanomaterials and Sensors