Photocatalysis Technology - Air Sterilizer & Deodorizer

Air sterilization effect derived from
natural phenomena!

NIDS PCO Technology is Powerful but Gentle

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NIDS Sterilization Technology Is
forcible and attractive

We provide solutions applicable to
various industries for improving air quality.

For industrial facilities

Pre-treatment system removesvarious odors, toxic gases, ultra fine dust, and smog in the air in indoor multi-use facilities.
Effective for removing odor and harmful substances that could not be eliminated when combined with ECP, Scrubber, RTO, Bio-Filter, and others.
Effective for increasing cooperation efficiency when used in existing deodorization facilities, including dehydration treatment plants.
Especially effective for deodorization, and odor and air purification to improve working environments inside manufacturing lines.

Superstores(installed on AHU air supply ducts)

Dehydration treatment plants(dealing with civil complaints about odor and emissions and creating a green workshop environment)

Production facilities and manufacturing lines(removal of internally generated odor)
For office work/schools

Excellent for creating a pleasant building environment by purifying indoor air circulating through
air handling units (AHU) and air pollutants from outside when many people live in the same space.
We provide an effective solution for removing stench and ammonia generated from the inside of toilets and preventing them from spreading.

Potable toilets (indoor sterilization and deodorization)

Inside of school classrooms (air sterilization and deodorization)

Animal hospitals (odor removal)

Day care centers (deodorization and sterilization)
For family/business use

Immunization is conducted by making an indoor environment safe and pleasant by removing floating bacteria and viruses indoors and improving hygienic conditions at home and in hospitals.
Applicable to various air conditioning system equipment, including air handling units (AHU) or AIO and suitable for removing floating viruses or bacteria in the air.
We provide a solution effective for removing odor as well as cigarette smoke generated from smoking areas, and that can resolve civil complaints by preventing damage from second-hand smoke

Home air conditioners (for food and cigarettesmells)

Hospitals and medical centers (for indoor air purification)
제품내장용

Various ceramic modules and AIO that we employ have an excellent effect on purifying water and air.
Removes inflowing odors and other VOCs, enabling maintenance of pleasant conditions following improvement of an indoor environment.
Protects the health of drivers and fellow passengers from car air handling units.
Used as a sterilization and deodorization module inside water purifiers, effective for maintaining clean conditions by containing the propagation of bacteria and molds. Additionally, under the sink, application is possible and effective for removing various viruses, bacteria and odors.
Extends fruit preservation periods by removing ethylene as a powerful foul odor remover in storage facilities, used for storing fruits and keeping them fresh.

Bidet(odor removal, sterilization)

Water purifier (Water + air purification)

Car air handling unit (odor removal + sterilization)

Elevator(odor removal + sterilization)

Ventilation system (indoor air quality improvement)

Fruit storehouse(extension of fruit preservation periods by removing ethylene, bacteria propagation prevention, preservation of freshness)

Air curtain(sterilization and deodorization)

Photocatalysis

Photocatalyst, a combined word of light + catalyst,
refers to semiconductor material that decomposes bacteria and other contaminants.

Useful for decomposing and eliminating various volatile organic compounds and formaldehyde causing sick house syndrome,
as a material that accelerates catalytic reaction using light as an energy source.

Catalysis

Catalyst is a material that facilitates and quickens reactions without
being consumed in the process of the chemical reaction. NIDS catalysts are chemically harmless to the human body.

Purifying material : Hydroxyl radical (OH)

Purifying substance “hydroxyl radicals” generated through NIDS visible
ight photocatalytic reaction have powerful oxidative and decomposing abilities.
In particular, they can chemically react bacteria, molds, viruses and
odor to water and carbon gas that are harmless to the human body. NIDS PCO technology does not filter harmful substances but
completely destroys them. They safely destroy and eliminate harmful
substances regardless of size in an optical way.

Principle of PCO Sterilization

Hydroxyl radicals generated through photocatalytic reaction have an outstanding ability to conduct the oxidative decomposition of
powerful organic substances they are an excellent decomposer of odor, viruses, bacteria and germs.

Step 01

Oxygen, moisture and floating viruses (harmful chemical substances) roam in the air.

Step 02

When they receive sunlight, electrons(e-) and positive holes (+) are created on the surface.

Step 03

Electrons change to uperoxide anions(O2-) through
the reaction with oxygen on the surface of photocatalysts.

Positive holes react with water molecules existing in the air and
change to hydroxyl radicals(neutral OH).

Step 04

Harmful chemical substances transform to water and
carbon dioxide through oxidation reaction of radicals.

Carcinogens vs Safe substances for the human body

The European Commission classified Titanium Dioxide (TiO2) as carcinogenic inhalation category 2
on Oct. 1, 2021, based on the scientific view of the European Food Safety Authority and many controversial regulatory measures to date.

Do you know Titanium Dioxide (TiO2), easily available on the market, has been classified as a carcinogen?

There were no biological reactions even after past contract with TiO2, and it is known to be harmless to the environment and the human body.
However, many academic journals warn of the harmfulness of the photocatalyst TiO2.

Differentiation of technology

Differentiation of NIDS Visible Photocatalysis

01
NIDS photocatalysis technology with nontoxicity, high thermal stability,
narrow band gaps and high visible light absorption rates have gained public
attention as a new type of semiconductor photocatalysis, and its sterilization
and deodorization effects with safety have been proven.
02
Superoxide anion radicals generated from photocatalysis
nano particles show excellent ability to increase their effects in addition
to sterilization and deodorization effects.
03
With the application of outstanding crystalline structured media with a small
quantity of combinations, customization in the required size is possible.

Safe visible photocatalysis developed to remove
UV’s harmfulness to the human body

	Existing PCO technology	NIDS’s special nano photocatalysis technology
Used light	Ultraviolet(UV) rays	Visible ray (Blue light)
Feature	Invisible light	Visible light
Stability	Damage to the human body is caused when directly exposed to skin and eyeballs	Safe light is naturally used in daily life
Ozone excessiveness	As high energy, through oxygen reaction in the air Excessively releases ozone above the permissible range	Safe for both sterilization and deodorization within the permissible ozone range

We have conducted special nano process development and catalysis research to completely get rid of side effects and risks from UV rays,
the existing method of POC technology and prevent health risks for my family and acquaintances.

Visible ray: safe light with 400~700nm wavelength that can be seen with the human eyes

Reasons why
you should choose
NIDS sterilization modules

Global technology company and key sensor supplier for Dyson

Sensor, visible photocatalysis/plasma sterilization
research center ownership BL2

Technology innovation-driven small giant and global exporter of
eco-friendly products

Expertise supporting technical cooperation for our customer,
the largest air purifier company in Korea

Outstanding performance ensured with the application of
high-tech bio plasma [OH] radicals, safe visible photocatalysis
and antibacterial HEPA filter

Removal of the survival risk of COVID-19 viruses in filters that survive
for a month in HEPA filters of general air purifiers

WHO’s international ozone safety certification

Ownership of the largest number of sterilization-related
test reports in Korea – FDA Class 2 Medical Device

NIDS sterilization module
technology comparison table

Very effective Effective Performance remedy required Not effective

Features of the sterilization method	Plasma Radical	Photocatalysis	HEPA	UV rays	Ozone	Anion
Harmfulness to the human body	Harmless	Harmful (TiO2 photocatalysis) Harmless (visible photocatalysis)	Harmless	Harmful when exposed	Harmful	Harmless
Virus reduction rate
Object surface sterilization effect
Sterilizing rate	~ 0.01sec	Above 1 sec	-	Above 1 sec	Above 10 sec	-
Air sterilization effect						-
Ozone stability(<50ppb)	<10 ppb	<10 ppb	10 ppb	<10 ppb	>1000 ppm	<10 ppb
Decomposition of harmful gases
Dust removal effect