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- W2917304823 endingPage "3964" @default.
- W2917304823 startingPage "3954" @default.
- W2917304823 abstract "Efficient materials capable of capturing toxic metals from water are widely needed. Herein, a new pyridylpyrazole-β-ketoenol receptor, X-ray diffraction analyzed, was covalently incorporated into the silica surface to produce solid and recyclable adsorbent particles. The new material, fully characterized, revealed extremely efficient removal of toxic metals from water, with a selectivity order of Pb(II) > Zn(II) > Cu(II) > Cd(II). The adsorption was exceptionally rapid at optimum pH and concentrations, showing Pb(II) removal of 93 mg g–1 within 5 min and maximum Pb(II) adsorption of 110 mg g–1 after only 20 min. Sorption isotherms agreed well with the Langmuir model suggesting a monolayer adsorption, whereas kinetics agreed with the pseudo-second-order model suggesting a chemisorption binding mechanism. Thermodynamics of adsorption were fitted with an endothermic and spontaneous process. The material, recyclable for at least five cycles, is therefore promising for the cleanup of water polluted by toxic metals, especially lead." @default.
- W2917304823 created "2019-03-02" @default.
- W2917304823 creator A5025624950 @default.
- W2917304823 creator A5032746200 @default.
- W2917304823 creator A5057689061 @default.
- W2917304823 creator A5078415011 @default.
- W2917304823 date "2019-02-21" @default.
- W2917304823 modified "2023-10-14" @default.
- W2917304823 title "Highly Selective Removal of Pb(II) by a Pyridylpyrazole-β-ketoenol Receptor Covalently Bonded onto the Silica Surface" @default.
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- W2917304823 doi "https://doi.org/10.1021/acsomega.8b03642" @default.
- W2917304823 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6647973" @default.