Soochow University

Shuao Wang

Junchang Chen

Yaxing Wang

Mingxing Zhang

Yugang Zhang

Long Chen

Xuemiao Yin

Linwei He

Huangjie Lu

Lanhua Chen

The invention provides a two-dimensional chalcogenide, which is a crystalline material, and has a chemical formula of (NH)[SnS]·(CHN), cell parameters of a=b=13.2307(10) Å, c=19.335(2) Å, α=β=90°, and γ=120°, and space group of P6/mmc. The invention further provides a method for preparing the two-dimensional chalcogenide and use thereof in the adsorption of iodine vapor. The two-dimensional chalcogenide of the present invention is capable of removing iodine vapor of various concentrations (as low as 400 ppm) over a wide range of temperatures (25° C.-75° C.), without desorption of iodine after standing for a long time.

Two-dimensional chalcogenide, and preparation method and use thereof

The present invention provides use of an ionization radiation source in preparation of a porous crystalline material, and a method for preparing a MOFs material and a COFs material. In the present invention, the ionization radiation source is used for preparing the porous crystalline material; under the irradiation of the ionization radiation source, the porous crystalline material (MOFs, COFs) can be synthesized in an extremely short time, wherein the ionization radiation source is used for providing energy required in a reaction for preparing the porous crystalline material. The preparation process does not need heating, so that energy consumption is reduced and a high-pressure system is avoided. The aforementioned preparation method is simple, low in instrument and equipment cost, and thus is a environmentally friendly and extremely low-cost synthesis method.

Use of ionization radiation source in preparation of porous crystalline material

A method for preparing a zeolite molecular sieve includes the steps of: (1) mixing at least one of a silicon source, an aluminum source and a phosphorus source with an alkaline substance, a template agent and water uniformly to obtain a zeolite molecular sieve precursor solution; aging the zeolite molecular sieve precursor solution at 20-30&#xb0; C. for 10-15 h; and subjecting the aged solution to ionizing radiation, and then washing the obtained solid to neutrality and drying to obtain the zeolite molecular sieve. The method of the present invention is green, simple and extremely cost-effective. Under the irradiation of an ionizing radiation source, the synthesis period of zeolite molecular sieve is short and no heating is needed in the preparation process, so energy consumption is reduced and a high-pressure system is avoided.

High-efficiency, fast and green method for preparing zeolite molecular sieve

The invention discloses use of a uranium-containing compound as a scintillator. The uranium-containing compound is a uranium-containing organic-inorganic hybrid compound or a uranium-containing inorganic compound. The uranium-containing organic-inorganic hybrid compound is a uranium-containing organic carboxylate or a uranium-containing organophosphate. The uranium-containing inorganic compound is a uranium-containing non-metallate, a uranium-containing metal salt, or a uranium-containing halide. The invention discloses the uranium-containing organic-inorganic compound or the uranium-containing inorganic compound having intrinsic scintillating ability, and provides a new concept and method for the development of (organic-inorganic, inorganic) scintillators of various chemical compositions and configurations with the uranium element.

Use of uranium-containing compound as scintillator

The present invention relates to a method for removing radioactive element thorium in a rare earth mineral, comprising: mixing the rare earth mineral with selenium dioxide in water, reacting radioactive element thorium with selenium dioxide by hydrothermal method, cooling to form a crystal, and separating the crystal to remove the radioactive element thorium. In the invention, tetravalent element thorium is selectively bound to inorganic ligand selenium dioxide in a hydrothermal environment to form a crystal, thereby achieving removal of radioactive element thorium. The method has high crystallization rate and high decontamination efficiency, and removes thorium from trivalent lanthanide element by crystallization solidification under a uniform reaction condition. Compared to a conventional industrial method for thorium separation, the method has low energy consumption and high separation ratio, enables one-step solidification separation, and effectively avoids the disadvantages of redundant separation operations and a large amount of organic and radioactive liquid wastes.

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Suzhou, China

Shuao Wang