diatombased

Diatom-based refers to materials, systems, or technologies that draw on diatoms or utilize their silica-based cell walls. Diatoms are a diverse group of unicellular algae found in oceans and freshwater. They synthesize ornate silica shells, called frustules, with nanoscale porosity and hierarchical structures that are rigid yet light. These properties make diatom-derived materials attractive as templates, carriers, and functional components across science and industry.

Diatomaceous earth, the fossilized remains of diatoms, comprises microcrystalline silica fragments and is used in filtration, as an abrasive, and as a carrier for pesticides. It appears in water and beverage filtration, swimming pool filters, and food processing. In horticulture and pest control, diatomaceous earth serves as a physical, non-toxic insecticide when used properly. It also finds use as filler or polishing material in paints, coatings, and personal care products.

In nanotechnology and materials science, diatom biosilica serves as a natural, porous silica template. Researchers harvest frustules, modify their surfaces, or replicate their architectures to create sensors, photonic devices, drug-delivery scaffolds, catalysts, and filtration membranes. Diatom-based approaches enable the fabrication of highly regular porous structures with tunable pore sizes, often at relatively low energy costs.

Applications span filtration, environmental remediation, cosmetics, and academic research. Filter media and membranes based on diatom silica offer high porosity and mechanical stability. In addition, diatoms are studied for light management, microfluidics, and sustainable materials development.

Safety and sustainability: mining and processing diatomaceous earth can generate respirable silica dust, requiring appropriate controls. Cultivation and harvesting strategies for diatoms aim to minimize environmental impact and support circular-society approaches.