Pu, Xiaoying published the artcileSelective capture of mercury(II) in aqueous media using nanoporous diatomite modified by allyl thiourea, Category: catalysis-chemistry, the publication is Journal of Materials Science (2022), 57(20), 9246-9264, database is CAplus.
We herein aim to construct a novel sorbent (DT-S) possessing adsorption selectivity to mercury(II) in aqueous media. Silanized purified diatomite (DT-N) was first synthesized by grafting 3-aminopropyltrimethoxysilane (APS) onto purified diatomite (DT). Nanoporous DT-S was then constructed through successively grafting epichlorohydrin (ECH) and allyl thiourea (AT) onto DT-N. FTIR, elemental anal. (EA), Brunauer-Emmett-Teller (BET), XRD, SEM, and pH at the zero point of charge (pHzpc) results demonstrated that DT-S had ample -OH, -NH2, and C=S, sp. surface area of 5.52 m2/g, small pore diameter (16.10 nm), porous structures, and pHzpc of 5.80, favorable for Hg(II) capture. Optimal adsorption parameters were determined through batch tests. Capture behavior was interpreted preferably by pseudo-second-order kinetic and Liu isothermal equations. DT-S¡ä capture features, e.g., monolayer, spontaneity, chemisorption, and endothermic reaction, were evidenced by the data obtained. DT-S had 56.30 mg/g of maximum adsorption capacity for Hg(II), exceeded some sorbents available. Competitive adsorption tests displayed remarkably selective ability to capture Hg(II) (> 80.01%). FTIR and XRD analyses validated a possible capture mechanism, i.e., chelation reactions took place between mercury ions and nitrogen, oxygen, or sulfur atom in solid-liquid interface. Altogether, DT-S with high removal efficiency, capture selectivity, and excellent reusability is expected to be new sorbent applied to Hg(II)-contaminated water purification
Journal of Materials Science published new progress about 13822-56-5. 13822-56-5 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is 3-(Trimethoxysilyl)propan-1-amine, and the molecular formula is C6H17NO3Si, Category: catalysis-chemistry.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
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