Preparation system and preparation method of nano alloy material

Abstract

The invention discloses a preparation system and preparation method of a nano alloy material, and relates to the technical field of nano material preparation. The preparation system comprises a nano alloy preparation device and a collection device, wherein the nano alloy preparation device consists of a power supply, an electrode, an ablation reaction container and an inert gas source; the collection device comprises a collection box; the inert gas source communicates with the ablation reaction container; the ablation reaction container communicates with the collection box; exhaust holes are formed in the bottom of the collection box; two electrode fixing seats for mounting and fixing electrodes are arranged in the ablation reaction container, the two electrode fixing seats are oppositelyarranged on the inner wall of the ablation reaction container, and the two electrode fixing seats are respectively electrically connected with two poles of the power supply; the electrode is one of apure metal electrode, an alloy electrode and a semiconductor electrode; and a receiving substrate used for receiving and collecting nano materials is arranged inside the collection box. The preparation system and the preparation method have general applicability and wide variety and range for preparing nano alloy materials.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a preparation system and method for nano-alloy materials. Background technique [0002] Nanomaterials play an important role in catalysis, environmental science, energy, military equipment, aerospace, and other fields, especially nanometal materials have excellent physical and chemical properties, but there are always some shortcomings in a single nanometer metal material. Studies have shown that the synthesis of alloys by two substances can not only form a specific size and shape, but also can significantly change its physical and chemical properties such as optical, electrical, magnetic, catalytic and mechanical properties. Different atoms in the alloy interact to form specific surface active centers or electronic structures. Due to the existence of synergistic effects, alloy nanomaterials often have properties superior to their single metal nanomaterials. At...

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Problems solved by technology

At present, the commonly used synthesis methods of nano-alloy materials are: co-reduction method, pyrolysis method, seed crystal induced growth method, electric displacement method, etc., which can prepare alloy materials with various structures and compositions, but there are still some deficiencies in each method. Among them, the co-reduction method is not easy to control the reaction rate, and the liquid after the reaction is easy to cause pollution to the environment; it is difficult to prepare bimetallic nano-alloys with a specific composition by the pyrolysis method; The preparation and timing of adding seed crystals must be strictly grasped, which increases the difficulty of operation; the hollow nano-alloy material is prepared by the electro-displacement method, and the surface of the prepared nano-alloy material is loose and porous, which increases the contact surface, which is not conducive to the preparation of easily oxidized nano-alloy materials. Alloy materials, and the prepared nano-alloy particles have a single shape, and only hollow-shaped nanoparticles can be prepared

Various synthesis processes are too complicated, controllable synthesis is difficult to repeat, and the catalytic mechanism is not clear, etc., which inspire researchers to continue to study metal alloy nanomaterials.

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