Synthesis of phosphorylated hyper-cross-linked polymers and their efficient uranium adsorption in water.

Graphene oxide functionalized with nano hydroxyapatite for the efficient removal of U(VI) from aqueous solution

Efficient uranium adsorbent with antimicrobial function: Oxime functionalized ZIF-90

A nanoclay enhanced Amidoxime-Functionalized Double-Network hydrogel for fast and massive uranium recovery from seawater

https://hal.mines-ales.fr/hal-03123901/document

Effect of agitation mode (mechanical, ultrasound and microwave) on uranium sorption using amine- and dithizone-functionalized magnetic chitosan hybrid materials

A novel functional porous organic polymer for the removal of uranium from wastewater

A novel amidoxime functionalized porous resins for rapidly selective uranium uptake from solution

Synthesis of microporous aromatic framework with scholl-coupling reaction for efficient uranium (VI) capture

The invention discloses an amino-amidoximino bifunctional super-crosslinked microporous uranium adsorbent and a preparation method thereof, and relates to a uranium adsorption material and a preparation method thereof. The invention aims to solve the problems of complex synthesis conditions and potential safety hazards of the existing adsorption material with amidoximino groups for extracting uranium. The preparation method comprises the following steps: synthesizing an aminated microporous polymer by taking benzene and benzylamine as raw materials, and cyanating the microporous polymer; and carrying out amidoximation on the obtained product. Benzene and benzylamine are used as monomers and woven by an external cross-linking agent, and through deep cross-linking reaction, methylene is usedas a 'bridge bond' to deeply link benzene rings, so that the microporous adsorption material with rich pores is produced. The microporous adsorption material is rich in amino and amidoximino functional groups, and shows excellent adsorption capacity and ion selectivity to uranium; synthesis conditions are simple; and no potential safety hazard exists. The method is suitable for preparing the microporous uranium adsorbent.

Amino-amidoximino bifunctional super-crosslinked microporous uranium adsorbent and preparation method thereof

The invention discloses an amidoxime-based super-crosslinked microporous resin efficient uranium adsorbent and a preparation method thereof, relates to an amidoxime-based super-crosslinked microporousresin uranium adsorbent and a preparation method thereof, and aims to solve the problems of low adsorption rate, saturated adsorption capacity and adsorption rate of the existing adsorption resin with amidoxime groups for extracting uranium. The preparation method comprises the following steps: synthesizing a polystyrene-divinylbenzene copolymer by taking styrene and divinylbenzene as raw materials, taking the polystyrene-divinylbenzene copolymer as a resin matrix, and carrying out chloromethylation, cyanation, super-crosslinking and amidoximation on the resin matrix at one time to obtain theadsorbent. The adsorbent integrates the advantages of an organic porous micro-material and the excellent adsorption capacity of amidoxime functional groups to uranium and has relatively high adsorption rate, saturated adsorption capacity, adsorption rate and uranium ion selectivity. The method is suitable for preparing the uranium adsorbent.

Huijun Yan

Papers

A novel functional porous organic polymer for the removal of uranium from wastewater

A novel amidoxime functionalized porous resins for rapidly selective uranium uptake from solution

Synthesis of microporous aromatic framework with scholl-coupling reaction for efficient uranium (VI) capture

Amino-amidoximino bifunctional super-crosslinked microporous uranium adsorbent and preparation method thereof

Amidoxime-based super-crosslinked microporous resin efficient uranium adsorbent and preparation method thereof