Nanoscale ammonium metatungstate (AMT, particle size <100 nm) possesses unique physicochemical properties, making it highly valuable in various high-tech fields:
? High Specific Surface Area: The high specific surface area of nanoscale AMT significantly enhances its surface reaction activity, making it excel in catalytic reactions.
? Excellent Optoelectronic Properties: Its photoresponse and electrochemical properties provide distinct advantages in photocatalytic pollutant degradation and battery materials.
? Tunable Morphology: By optimizing preparation processes, the crystal form, particle size, and dispersibility of AMT can be controlled to meet specific application requirements.

Main Applications:
? Catalysts: Nanoscale AMT serves as an efficient catalyst or catalyst precursor, widely used in petrochemical processes (e.g., hydrocracking), environmental management (e.g., selective catalytic reduction of nitrogen oxides), and photocatalytic degradation of organic pollutants.
? Battery Materials: In lithium-ion batteries, sodium-ion batteries, and fuel cells, nanoscale AMT acts as an electrode material additive or precursor, improving electrochemical performance, cycle stability, and energy storage efficiency.
? Photocatalysis: The wide bandgap properties of nanoscale AMT make it highly effective in photocatalytic water splitting, CO? reduction, and degradation of organic pollutants (e.g., dyes and pesticides).
? Other High-Value Applications: These include high-performance nanocomposites, ceramic-based materials, optical films, and electronic devices (e.g., sensors and electrochromic materials).