Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (1): 106-111.doi: 10.19964/j.issn.1006-4990.2022-0205

• Research & Development • Previous Articles     Next Articles

Study on preparation of covalent organic framework materials and their adsorption properties for dyes

PEI Xiu1(),LI Yaming1,2()   

  1. 1. Gansu Key Laboratory of Solar Power Generation System Project,Jiuquan Vocational and Technical College,Jiuquan 735000,China
    2. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China
  • Received:2022-04-16 Online:2023-01-10 Published:2023-01-17
  • Contact: LI Yaming E-mail:910987545@qq.com;632778418@qq.com

Abstract:

The two-dimensional(2D) covalent organic framework(DMTP-TAPB COF) materials were prepared via the solvothermal method.The structure,morphology,and properties of as-prepared materials were studied in detail through X-ray diffraction(XRD),scanning electron microscope(SEM) and thermogravimetric analyzer(TGA).Then,the adsorption capacity of the prepared COF materials for indigo carmine(IC) dye was studied.The effects of adsorption time,pH values and initial concentrations of IC on the adsorption performance were investigated.The experimental results showed that as-prepared 2D COF materials had good crystallinity and uniform morphology.Meanwhile,the DMTP-TAPB COF had a higher adsorption capacity(330.5 mg/g) and favourable removal efficiency(84.5%) for IC.Moreover,the adsorption process of covalent organic framework DMTP-TAPB COF for indigo carmine was combined with the pseudo-second-order kinetics model and the Langmuir adsorption model.The study showed that COF materials had broad application prospects as adsorbent for pollutants.

Key words: covalent organic framework, indigo carmine, absorption, water treatment

CLC Number: