Micromachines | |
A Low Cost Fe3O4–Activated Biochar Electrode Sensor by Resource Utilization of Excess Sludge for Detecting Tetrabromobisphenol A | |
Jiang Li1  Jun Qin1  Feng Feng1  Suxing Luo2  Yuanhui Wu2  Meizhi Yang3  | |
[1] College of Chemistry and Environmental Engineering, Shanxi Datong University, Datong 037009, China;Department of Chemistry and Chemical Engineering, Zunyi Normal College, Zunyi 563006, China;Office of Academic Research, Guizhou Open University, Guiyang 550023, China; | |
关键词: sludge-based biochar; Fe3O4; TBBPA; electrochemical sensor; | |
DOI : 10.3390/mi13010115 | |
来源: DOAJ |
【 摘 要 】
Owing to its ubiquity in natural water systems and the high toxicity of its accumulation in the human body, it is essential to develop simple and low-cost electrochemical sensors for the determination of 3,3′,5,5′-tetrabromobisphenol A (TBBPA). In this work, Fe3O4–activated biochar, which is based on excess sludge, was prepared and characterized using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and BET analysis to analyze its basic features. Subsequently, it was used to fabricate an electrochemical sensor for the detection of TBBPA. The electrochemical test results revealed that the Fe3O4–activated biochar film exhibited a larger active surface area, a lower charge transfer resistance and a higher accumulation efficiency toward TBBPA. Consequently, the peak current of TBBPA was significantly enhanced on the surface of the Fe3O4–activated biochar. The TBBPA sensing platform developed using the Fe3O4–activated biochar composite film, with relatively a lower detection limit (3.2 nM) and a wider linear range (5–1000 nM), was successfully utilized to determine TBBPA levels in water samples. In summary, the effective application of Fe3O4–activated biochar provided eco-friendly and sustainable materials for the development of a desirable high-sensitivity sensor for TBBPA detection.
【 授权许可】
Unknown