Details

Autor(en) / Beteiligte

• Li, Wei-Tao
• Hu, Zheng-Jie
• Meng, Jie
• Zhang, Xuan
• Gao, Wei
• Chen, Ming-Li
• Wang, Jian-Hua

Titel

Zn-based metal organic framework-covalent organic framework composites for trace lead extraction and fluorescence detection of TNP

Ist Teil von

• Journal of hazardous materials, 2021-06, Vol.411, p.125021-125021, Article 125021

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A novel dual functional composite (MOFL-TpBD) was prepared through solvothermal methods, with excellent Pb2+ ions separation and stable 2,4,6-Trinitrophenol (TNP) fluorescence detection performance. MOFL-TpBD was characterized by FTIR, XRD, XPS, SEM and TGA et al. The prepared material was used to extract Pb2+ ions, with an adsorption capacity of 21.74 mg g−1 calculated by Langmuir isotherm model. The limit of detection was 0.32 μg L−1, along with a linear range from 0.7 to 12 μg L−1 and a precision of 5.4% (1 μg L−1, n = 9), respectively, where MOFL-TpBD was adopted as adsorbent for Pb2+ ions preconcentration. The practical samples and reference water sample were measured by the provided method, with the satisfactory recoveries (91–110%) and reliable analytical results. MOFL-TpBD was capable of fluorescent sensing of TNP, with a linear range from 0.01 to 1 mM and a limit of detection of 3.52 μM, respectively, and a precision of 3.29% was obtained (0.2 mM, n = 11). Meanwhile, the recoveries ranged from 91% to 108% in analysis of TNP for the practical samples. The designed material provided a potential candidate material for the detection of heavy metal ions and explosives in environmental water samples. [Display omitted] •A novel dual functional composite (MOFL-TpBD) was prepared through solvothermal methods.•The composite showed excellent lead ions separation and 2,4,6-trinitrophenol detection performance.•The analysis of trace lead and 2,4,6-trinitrophenol in environmental water samples was accomplished.