Micro-nanometer composite, preparing method and application thereof

Abstract

The invention discloses a micro-nanometer composite. The micro-nanometer composite is an urchin-like Ni-Co-P metallic composite, and the structure of the micro-nanometer composite is determined as Ni@Ni3P@CoP2@P through XRD (X-Ray Diffraction) representation. The invention discloses another micro-nanometer composite. An urchin-like Ni-Co-Pd-P metallic composite is formed through introducing nanometer palladium on the basis of the Ni-Co-P metallic composite. The invention further discloses a preparing method and application thereof for the two micro-nanometer materials. The Ni@Ni3P@CoP2@P is synthesized through a one-step hydrothermal method, palladium salt is absorbed on the basis of the Ni-Co-P composite, a reductant is added, and nanometer palladium is introduced. The synthesized Ni-Co-Pd-P has great catalytic and circulating effects on the reduction of para-nitrophenol.

Description

technical field [0001] The invention relates to the field of preparation and application of inorganic materials, in particular to a composite micro-nano material with simple synthesis, good magnetic properties and high catalytic performance. Background technique [0002] As an aromatic hydrocarbon, nitrophenol is highly toxic and can invade the body through the respiratory system, digestive system and skin. Nitrophenol mainly has adverse reactions to the blood, liver and central nervous system. Nitrophenol has the ability to convert hemoglobin into methemoglobin ability, the presence of nitrophenol in water can reduce its self-purification ability, in addition to being an important intermediate for several analgesics and antipyretics (such as acetaminophen, acetanilide and phenacetin), p-aminophenol is also It can be used as photo developing agent, corrosion inhibitor, anti-corrosion lubricant and hair dye, etc. [0003] p-nitrophenol is mainly produced from catalytic / elect...

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Problems solved by technology

[0003] p-nitrophenol is mainly produced from catalytic / electrochemical reduction of nitrobenzene, therefore, it is necessary to explore good catalysts for the catalytic reduction of p-nitrophenol to p-aminophenol, and some metal composite materials p-nitrophenol The catalytic hydrogenation of ions has been extensively studied, however, the heterogeneous noble metal catalysts traditionally applied in the hydrogenation of aromatics usually require extreme reaction conditions

Currently, catalytic research on the hydrogenation of arenes is still in its infancy, and developing highly efficient catalysts that can facilitate the reduction of arenes under mild conditions remains a significant challenge for researchers. Metallic micro / nanocatalysts have different architectures, such as polymers. ﹑dendritic, micellar and mesoporous materials, recently there has been increased interest in studying them in specific reaction spaces

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