Donum Lucis — Perth, Western Australia
The world’s first fully natural bio-mineral photocatalytic coating. Applied like paint. Activated by any light. Generating clean energy from water vapour. Made from bamboo, sweet potato, turmeric, kelp and the minerals of Western Australia. Continuously. Forever.
The Donum Lucis coating is a photocatalytic nanocomposite that generates hydrogen (H•) and hydroxyl (OH•) radicals continuously from water vapour or atmospheric humidity when exposed to any light source.
The core mechanism begins with boron-doped titanium dioxide (TiO₂) supported on biogenic amorphous silica (SiO₂) derived from bamboo ash. When a photon strikes the surface, it generates an electron-hole pair in femtoseconds — one million times faster than any operational cycle demands.
The biological sensitiser compounds from sweet potato, turmeric, kelp and eucalyptus extend this activation across the complete UV-to-NIR spectrum from 265nm to 700nm — including standard indoor LED lighting. No UV lamps required.
The result is a surface that never depletes. It generates clean radicals from water and light, self-cleans, sterilises, purifies air and supplements combustion — simultaneously, from a single coating applied once.
Each photon generates an electron-hole pair in TiO₂. Holes oxidise water to OH•. Electrons reduce H⁺ to H•. Self-cleaning occurs simultaneously.
Femtoseconds → microsecondsHeat and UV together produce 4.7× the radical yield of either alone. Engine heat, solar thermal and warm surfaces all amplify each photon’s contribution.
4.7× multiplicative effectContact angle ~0°. Water vapour rehydroxylates the entire catalytic surface in milliseconds — always fully recharged before the next photon event.
Milliseconds — complete rechargeBorax doping, biogenic SiO₂ constraint and carbon residues maintain optimal TiO₂ crystal phase through millions of operational cycles.
Throughout service lifeFrom engine combustion chambers to building facades, submarine interiors to solar panels, cookware to upholstery — the Donum Lucis coating adapts its formulation to any substrate and any environment.
Zone-specific coating for Wankel and piston engines. H• and OH• radical supplementation reduces EGT 50–80°C and improves fuel economy 10–20%. Self-regenerates at every ignition event.
Antireflective coating increases panel efficiency 8–50%. Self-cleaning under diffuse daylight. Superhydrophilic surface spreads rain as a cleaning sheet — no brushing required.
Every external surface becomes an energy system. 400–600m² on a house — 10× a standard rooftop solar installation. Applied like paint. No structural modification required.
Continuously destroys formaldehyde, benzene and VOCs under standard LED room lighting. No UV required. The only photocatalytic wall coating that works under artificial lighting. 24-hour antimicrobial protection.
High humidity is an advantage. Continuous atmosphere purification, antifouling and corrosion protection. Zero service intervals. Water tank lining eliminates Legionella without chemicals.
Exterior panels generate hydrogen from humidity in daylight. Cabin surfaces destroy synthetic material VOCs. Trains, aircraft, buses — the larger the vehicle, the greater the energy surface area.
Food-safe self-cleaning surface. OH• radicals continuously oxidise food residues and bacteria. No PTFE. No PFAS. No synthetic chemicals. Just plants and minerals, cured at 300°C.
Spray-applied to upholstery, curtains and carpet. Eliminates pet odours, dust mite allergens and mould. Dark-period Ag• antimicrobial protection without any light source required.
Suppresses polysulfide shuttle in lithium-sulfur batteries. Accelerates Li• desolvation. Thermal dimensional stability preventing catastrophic short-circuit failure at elevated temperatures.
Every component is naturally occurring — bio-sourced plant material, mined minerals, or biological fluids. Zero synthetic chemical precursors. Zero precious metal catalysts. Zero hazardous solvents.
The titanium source is ilmenite sand from WA beaches. The boron dopant is borax — a supermarket mineral. The silver nanoparticles are synthesised from native silver dissolved in lemon juice. The nitrogen dopant is fresh urine. The eucalyptus kino is collected for free from river red gums along the Swan River.
Every primary material in the Donum Lucis coating system is sourced from Western Australia or grown locally in Perth’s climate. The titanium comes from the black sand on our beaches. The clay primer comes from our geological deposits. The eucalyptus sensitiser is collected free from river red gums along the Swan River.
This is not incidental. A coating technology born from local materials has lower cost, lower carbon footprint, and stronger supply chain security than any imported synthetic chemistry. Western Australia is one of the world’s largest mineral provinces. Everything we need is here.
Licensing enquiries • Research partnerships • Application-specific formulations
Available for commercial licensing across all application sectors worldwide