LumActiv is a patented ISO Certified, light-activated hydrophilic coating that has the incredible ability to decompose organic compounds (VOCs), odors, and most airborne noxious substances by creating hydroxyl radicals and superoxide ions during photocatalysis. This “smog eating” coating combines the air-cleaning properties of photocatalytic titanium dioxide (TiO2) with advances in nanotechnology. TiO2, in its nonreactive form, is commonly used as a food pigment and a UV absorber for sunblock. When this same eco-friendly material is heated to high temperatures it undergoes a change in structure giving the TiO2 its photocatalytic properties. LumActiv’s nano-scaled particles have an increased surface area when compared to conventional micro-sized particles.
The LumActiv coating not only reduces smog and other forms of air pollution, but also prevents contaminants from accumulating on hard surfaces. This self-cleaning effect is ideal for glass building surfaces looking to reduce cleaning cycles and save water while contributing positively to local air quality.
Although photocatalytic coatings have been available in some form or another for almost 50 years and studied in over 3,000 academic papers, LumActiv stands apart from the competition by its ability to improve air quality when exposed to the visible light spectrum as well as UV light. This innovation allows both indoor and outdoor air quality improvements when surfaces are coated with LumActiv. The future of “green” building coatings should not end with solar panels and green roofs. Through the widespread use of photocatalytic coatings like LumActiv in urban areas, global air quality challenges can be met.
- Non-Toxic / ISO Certified
- Breaks down VOCs, NOx and other airborne pollutants
- Improves air quality in dense urban environments
- Can be applied toward LEED credits for air quality
- Creates healthier work & home environment
- Interior/exterior application
- Reacts with visible and UV light
- Triggered by light energy, organic compounds decompose on a molecular level
- Creates a super hydrophilic surface allowing water to wash away contaminants
- Reduces need for building cleaning and maintenance
Air and Surface cleaning in:
- LumActiv Indoor
- Increased light-sensitivity for use in indoor environments
- Coverage: 475 sq ft / 32 oz
- LumActiv Multipurpose
- Intended for use on all surfaces other than glass
- Coverage: 570 sq ft / 32 oz
- LumActiv Glass
- Intended for use on glass surfaces
- Coverage: 475 sq ft / 32 oz
- LumActiv Primer
- Non-reactive base coat to protect organic surfaces
- Coverage: 570 sq ft / 32 oz
Lumactiv works by creating hydroxyl radicals and superoxide ions during photocatalysis – these ‘scrubbers’ break down harmful organic airborne pollutants such as VOCs, nitric oxides, carbon monoxide, and methane into harmless byproducts.
Additionally, thanks to advances in nanotechnology, LumActiv contains nano-scaled particles which allow for increased surface area of reactive material when compared to larger scale particles. As a result, LumActiv has a higher rate of photocatalytic activity and decomposes organic pollutants much more quickly than our competitors, as evidenced by the ISO testing results of the International Photocatalyst Standards Testing Centre.
Whether our customers are environmentally conscious and intent on decreasing the air pollution in urban environments, looking to create healthier indoor environments or simply interested in keeping their assets clean and decreasing building maintenance costs, DryWired’s LumActiv photocatalytic coatings offer an innovative eco-friendly solution.
How does the LumActiv Technology work?
LumActiv uses photocatalytic titanium dioxide (TiO2) nanoparticles to absorb ultraviolet (UV) and visible light to drive the decomposition of water to hydroxyl radicals or organic and inorganic compounds to their oxidized forms (such as nitrous oxide (Nox) to nitrate salts). The hydroxyls produced can undergo further reactions with odors, organic and inorganic compounds, and pollution to eliminate harmful species in the air and produce water in a catalytic cycle.
What is a photocatalyst?
Photo- meaning light and catalyst- being a component that speeds up a reaction without being consumed; therefore, a “photocatalyst” is a material that, in the presence of light, speeds up a chemical reaction without being consumed.
The reaction that is being sped up with LumActiv is the production of hydroxyl radicals from UV light. This is a naturally occurring process that occurs in the atmosphere to help clean the planet. Hydroxyl radicals are known as the “atmosphere’s detergent” for their impressive cleaning power. Water is a co-catalyst in the reaction to clean the air.
What version of LumActiv is used where?
LumActiv Glass: Glass surfaces such as windows, solar panels, automotive glass, architectural glass
LumActiv Indoor: Indoor surfaces exposed to mostly indoor light
LumActiv Multipurpose: Surfaces exposed to large amounts of UV light, outdoor applications
LumActiv Primer: Organic surfaces that LumActiv will be applied to, acting as an inorganic barrier. Plastic or other hard hydrophobic surfaces to increase adhesion.
Table 1. LumActiv products evaluated for their performance on various metrics on a 1-5 scale.
|Coating Applicability||Durability||Safety||Soil Proof||Photocatalytic Oxidation||Super-Hydrophilicity||Visible Light Responsive||VOC Reduction||Air Purification|
What type of equipment is needed to apply LumActiv:
An HVLP (high-volume, low-pressure) sprayer can be used to apply LumActiv. Recommended spray nozzle size for LumActiv Glass is 0.8mm. Any nozzle size between 1.0-1.3mm is applicable for LumActiv Primer, LumActiv Multipurpose, and LumActiv Indoor. A pressure of 30 psi should be used when applying the LumActiv.
How is LumActiv applied?
The HVLP sprayer should be held straight up and down, with the nozzle tip 20-30 centimeters (8-12 inches) away from the substrate so that a fine mist can be formed before reaching the surface. Rotate the nozzle tip when spraying. When moving the spray gun horizontally the tip should be vertical. When moving the spray gun vertically the tip should be horizontal. Spray pattern should be followed as shown below. 10 minutes should be allowed between coats in order to achieve optimal adhesion. Dry time can be accelerated with heat.
What is the coverage rate of LumActiv?
|Lumactiv Primer||Lumactiv Multipurpose||Lumactiv Glass||Lumactiv Indoor|
|Thickness (μm)||Coverage (ft²)||Thickness (μm)||Coverage (ft²)||Thickness (μm)||Coverage (ft²)||Thickness (μm)||Coverage (ft²)|
|Coverage 32 oz Porous Surfaces||.10||570||.17||330||–||–||.17||330|
|Coverage 32 oz Hard Surfaces||.10||570||.12||475||.10||570||.12||475|
What is the surface preparation required before applying LumActiv?
Ensure a clean, dry surface before application. For glass and other hard surfaces a surface degreaser, such as DryWired Glass Cleaner, can be used. If glass is heavily soiled, a glass scraper may be necessary. If the surface is organic in nature and will be exposed to large amounts of UV exposure, LumActiv Primer should be applied prior to the final LumActiv product.
When is LumActiv Primer used?
LumActiv Primer is used under two conditions, the first being on an organic surface to act as an inorganic barrier between the active LumActiv coating (Multipurpose or Indoor) and the substrate the coating is being applied to, such as an organic paint. The LumActiv Primer can also be used to increase adhesion and act as a binding agent between the surface and the coating.
What can be done if the LumActiv does not adhere to the substrate?
For plastic and other hard hydrophobic surfaces, TiO2 particles have difficulty adhering. It is recommended to add acrylic or urethane resin in LumActiv Primer and LumActiv Multipurpose or Indoor to obtain strong adhesion. Normally 0.1% – 0.3% by weight. In the case of a glass surface, DryWired Glass Cleaner should be used in combination with a glass scraper, followed by isopropyl alcohol to prepare the surface.
What is the dry time of LumActiv?
3 to 12 hours are required for the film to fully dry. The dry time can be accelerated with heat so long as the temperature does not exceed 600C. Once the coating has fully dried, the coating will not dissolve in water.
What is the cure time of LumActiv?
The coating will fully cure in about 2 months. At this point, the coating will have achieved maximum hardness (2H-5H depending on the coating/substrate).
How is LumActiv removed?
If there is an area of the coating that needs to be reworked, the coating should be removed immediately. Coating can be removed by wiping with water and a cloth.
How should LumActiv equipment be cleaned?
All tools can be rinsed with water to remove any remaining coating solution.
What is the shelf life of LumActiv?
LumActiv Glass: 2 years, unopened, from the date of manufacture if stored under recommended conditions.
LumActiv Primer: 5 years, unopened, from the date of manufacture if stored under recommended conditions.
LumActiv Indoor: 5 years, unopened, from the date of manufacture if stored under recommended conditions.
LumActiv Multipurpose: 5 years, unopened, from the date of manufacture if stored under recommended conditions.
Is LumActiv certified?
-ISO 22197: Photocatalytic material – Certified
ISO 22197-1:2007 (Removal of NOx)
ISO 22197-2:2011 (removal of acetaldehyde)
ISO 22197-3:2011 (removal of toluene)
ISO 22197-4:2013 (removal of formaldehyde)
-ASTM G 154: Artificial Weathering – No Changes
-ASTM D 4585: Humidity – No Changes
-ASTM D 1308: Chemical Resistance – No Changes
What is TiO2?
TiO2 is titanium dioxide. It is one of the oldest known and well-studied chemical compounds. It is widely used in paints and food products as a white pigment. It is also a semiconductor material that can efficiently absorb UV light. Another widely used semiconductor material is silicon; it is used to absorb visible light and produce electricity in solar panels. The energy of UV light and TiO2’s semiconductor bandgap (energy difference in filled and unfilled electronic states) overlap making TiO2 an efficient UV absorber.
What is UV?
Ultraviolet (UV) is invisible, high-energy light making up 6.6% of the incident solar energy that hits the planet from the Sun. Harmful UV corresponds to light that is shorter than 400 nm in the electromagnetic spectrum. Visible light is from 400-750 nm. The longer the wavelength of light, the less energy the light has.
What is a nanoparticle?
A nanoparticle is any particle whose diameter is between 1-100 nanometers (nm) in size. A nanometer is 1,000,000,000 or 1 billion times smaller than a meter. The average human hair is 17,000 – 181,000 nm thick. These small particles have incredibly high surface areas and interesting chemical and optical properties. The high surface area increases the particle’s effectiveness in performing chemical reactions. The advent of nanotechnology, the science of materials 10,000 times thinner than a human hair, allows LumActiv to do more with less. The average nanoparticle in LumActiv is 10 nm.