Synthesis of a “turn-on” fluorescent polymer probe, preparation and reusability of its test paper on metal ions detection

Hu, Jiahui; Zhao, Xiaoyan; Zhang, Guangming; Cui, Zhaoliang; Wang, Chenyi

doi:10.1016/j.jtice.2022.104630

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…A large number of adsorbents have been applied to sewage treatment. Activated carbon, the most representative adsorbent, has the disadvantages of saturation capacity limitation, poor selectivity, and poor reproducibility. − However, the shortage of bleak surface functional groups results in poor adsorption efficiency for existing adsorbents, even for nanocomposite materials . The poor adsorption capacity and selectivity of the polymer nanocomposite hinder its application.…”

Section: Introductionmentioning

confidence: 99%

Sulfhydryl-Functionalized Amino Group Polymer Microcomposites toward Efficient Adsorption of Aqueous Cr(VI), As(III), Cd(II), and Pb(II)

Wang,

Lu,

Jing

et al. 2023

Langmuir

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The development of efficient adsorbents for heavy metal pollution, especially five toxic heavy metals, has attracted great research interest. Polymer-based adsorbents have aroused research value for their abundant functional groups and high porosity to the ability to capture metal ions. We designed a sulfhydryl-functionalized polymer microcomposite to take up Cr(VI), As(III), Cd(II), and Pb(II). The adsorption capacity achieved was 64.2 mg g −1 for Cr(VI), 44.9 mg g −1 for As(III), 35.5 mg g −1 for Cd(II), and 18.2 mg g −1 for Pb(II). Langmuir and Sips isotherm model is dominant for As(III), Cd(II), and Pb(II) adsorption. Pseudo-second-order kinetic models can better describe the adsorption behavior of Cr(VI), implying that chemisorption is accompanied by Cr(VI) adsorption. Cr(VI) simultaneous reduction to Cr(III) through the benzenoid amine oxidate pathway was the dominant mechanism, precipitation for Cd(II) adsorption was convinced, and chelation between As(III)/Pb(II) and�SH group and complexation between Pb(II) and C�O or benzene hydroxyl were a plausible mechanism for As(III) and Pb(II) adsorption.

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