SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 60 ›› Issue (8): 108-117.DOI: 10.1016/j.cjche.2023.01.014

• Full Length Article • 上一篇    下一篇

Dual-functional pyrene implemented mesoporous silicon material used for the detection and adsorption of metal ions

Jing Huang, Honghui Cai, Qian Zhao, Yunpeng Zhou, Haibo Liu, Jing Wang   

  1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
  • 收稿日期:2022-09-18 修回日期:2023-01-17 出版日期:2023-08-28 发布日期:2023-10-28
  • 通讯作者: Jing Wang,E-mail:wjwyj82@gxu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (21966006).

Dual-functional pyrene implemented mesoporous silicon material used for the detection and adsorption of metal ions

Jing Huang, Honghui Cai, Qian Zhao, Yunpeng Zhou, Haibo Liu, Jing Wang   

  1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
  • Received:2022-09-18 Revised:2023-01-17 Online:2023-08-28 Published:2023-10-28
  • Contact: Jing Wang,E-mail:wjwyj82@gxu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21966006).

摘要: A fluorescent active organic-inorganic hybrid material PyN-SBA-15 was synthesized by implementing pyrene derivatives into mesoporous SBA-15 silica. PyN-SBA-15 had detection and removal functionalities toward Al3+, Cu2+, and Hg2+. On the one hand, PyN-SBA-15 was used as a fluorescence sensor and displayed high sensitivity toward Al3+, Cu2+, and Hg2+ cations (limit of detection: 8.0×10-7, 1.1×10-7, and 2.9×10-6 mol·L-1, respectively) among various analytes with “turn-off” response. On the other hand, the adsorption studies for these toxic analytes (Cu2+, Hg2+, and Al3+) showed that the ion removal capacity could reach up to 45, 581, and 85 mg·g-1, respectively. Moreover, the Langmuir isotherm models were better fitted with the adsorption data, indicating that the adsorption was mono-layer adsorption. Kinetic analysis revealed that the adsorption process was well described by the pseudo-second-order kinetic model for Cu2+ and Hg2+ and pseudo-first-order kinetic model for Al3+. The prepared silica material could be reused in four recycles without significantly decreasing its adsorption capacity. Therefore, the PyN-SBA-15 material can serve as a promising candidate for the simultaneous rapid detection and efficient adsorption of metal ions.

关键词: Dual function, Nanomaterials, Mesoporous silica, Metal ions, Detection and adsorption

Abstract: A fluorescent active organic-inorganic hybrid material PyN-SBA-15 was synthesized by implementing pyrene derivatives into mesoporous SBA-15 silica. PyN-SBA-15 had detection and removal functionalities toward Al3+, Cu2+, and Hg2+. On the one hand, PyN-SBA-15 was used as a fluorescence sensor and displayed high sensitivity toward Al3+, Cu2+, and Hg2+ cations (limit of detection: 8.0×10-7, 1.1×10-7, and 2.9×10-6 mol·L-1, respectively) among various analytes with “turn-off” response. On the other hand, the adsorption studies for these toxic analytes (Cu2+, Hg2+, and Al3+) showed that the ion removal capacity could reach up to 45, 581, and 85 mg·g-1, respectively. Moreover, the Langmuir isotherm models were better fitted with the adsorption data, indicating that the adsorption was mono-layer adsorption. Kinetic analysis revealed that the adsorption process was well described by the pseudo-second-order kinetic model for Cu2+ and Hg2+ and pseudo-first-order kinetic model for Al3+. The prepared silica material could be reused in four recycles without significantly decreasing its adsorption capacity. Therefore, the PyN-SBA-15 material can serve as a promising candidate for the simultaneous rapid detection and efficient adsorption of metal ions.

Key words: Dual function, Nanomaterials, Mesoporous silica, Metal ions, Detection and adsorption