Hollow mesoporous manganese dioxide nanoparticles

Product Name

Hollow mesoporous manganese dioxide nanoparticles

Product Overview

Hollow Mesoporous Manganese Dioxide Nanoparticles are composed of an internal cavity structure and a surface pore size of 2-5nm. This unique structure endows them with high specific surface area and good biocompatibility. It is prepared by the hard template method. First, the silica nanoparticles with a specific size are synthesized by the sol gel method, and a manganese dioxide shell with a certain thickness is generated on its surface. Finally, the hollow manganese dioxide nanoparticles are obtained by etching the internal silicon dioxide with alkaline solution.

Technical Parameter

Diameter:100-130nm Main ingredient:MnO2

Appearance:Black powder Zeta potential:-40mV

Product Features

1) Superior catalytic performance: MnO2 itself is an excellent catalyst. The mesoporous structure exposes more active sites, while the hollow structure facilitates reactant diffusion, demonstrating high activity in catalytic oxidation, electrocatalysis, and enzyme-like catalysis. 2) Superior electrochemical properties: As an electrode material, the hollow structure buffers volume expansion during charging/discharging, while mesoporous channels shorten ion diffusion paths, enhancing rate performance and cycling stability. 3) Controllable degradability: In acidic or reducing environments, MnO2 degrades into Mn²+ ions, functioning as a "degradable nanomaterial" that avoids long-term retention in biomedical applications. 4) Multimodal functional integration: Capable of simultaneously performing catalytic, drug delivery, photothermal, and imaging functions, enabling "diagnosis-treatment integration."

Application Fields

1) Energy Storage and Conversion: Utilizing hollow structures to buffer volume expansion, mesopores to promote ion diffusion, and MnO2's high theoretical capacity to enhance battery energy density. Simultaneously, its high specific surface area provides abundant double-layer capacitance, while MnO2's pseudocapacitance contributes additional capacity. Hollow structures improve rate performance. 2) Catalysis and Environmental Remediation: Mimics peroxidase and oxidase activities for biosensing, immunoassays, and tumor therapy. Catalyzes degradation of organic pollutants like dyes, phenols, and antibiotics, with mesoporous structures enhancing mass transfer efficiency. 3) Biomedical Applications: Hollow cavities load chemotherapy drugs, with mesoporous channels controlling release rates. In tumor microenvironments (slightly acidic or H2O2-rich), MnO2 degrades to release drugs, enabling responsive delivery.

Related Information

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