What is the ARCHITECTURE & BUILDING MATERIALS EXPO 2025?

One of Japan’s leading exhibitions, showcasing a wide range of building materials, equipment, software, construction methods, and related services for residential, commercial, and office spaces.

Highlights of the Photocatalysis Industry Association Japan Booth

At our booth, you can witness the decomposition activity of photocatalysis through live demonstrations and informative videos explaining its effects. Additionally, eight member companies of the Photocatalysis Industry Association will showcase the principles, benefits, and applications of their photocatalytic products.

Exhibition Details

Date & Time:
March 4 (Tue) – March 7 (Fri), 2025
10:00 AM – 5:00 PM (JST, UTC+9) (until 4:30 PM on the last day)

Venue:
Tokyo Big Sight, East Hall 6

About the Photocatalysis Seminar

The seminar will cover case studies on photocatalytic product analysis and its applications for third-hand smoke reduction.

Photocatalysis Seminar (Supported by PIAJ) at ARCHITECTURE & BUILDING MATERIALS EXPO 2025
"Creating Comfortable Spaces with Photocatalysis – Comprehensive Solutions for Product Development"
March 6 (Thu), 11:00 AM – 11:45 AM (JST, UTC+9)
Speaker: Senior Researcher Ochiai, KISTEC

Free admission (pre-registration required).
For more details and registration, please check the link below.

Register for the Photocatalysis Seminar here!

The post Experience the Power of Photocatalysis! Exhibiting at ARCHITECTURE & BUILDING MATERIALS EXPO 2025, Tokyo Big Sight first appeared on PALCCOAT.

Today, we would like to share a new and notable research breakthrough in the field of environmental science. The news highlights a technology developed by researchers at Rikkyo University and others that uses photocatalysis to easily break down PFAS (per- and polyfluoroalkyl substances) *1, commonly known as 'forever chemicals.'

What is PFAS?  *1

PFAS, known for their exceptional durability, are widely used in everyday items*2 such as cookware, food packaging, and clothing due to their resistance to water, oil, and heat.

(*2 Coatings for frying pans and pots, lithium-ion batteries, guitar strings, fishing lines, fuel hoses, semiconductor manufacturing, solar panels, tires for snow vehicles, waterproof sprays, and more.)

However, these compounds are extremely difficult to break down and persist in the environment, earning the title of "forever chemicals." As a result, PFAS treatment and recycling have become significant environmental challenges.

(Fluoropolymers and more than 10,000 variations, including PFOS, PFOA, and PFHxS, are regulated under the Stockholm Convention.)

Cleavage of C-F Bonds and the Role of Photocatalysts

The Toughness of C-F Bonds

The carbon-fluorine (C-F) bonds in PFAS are among the strongest chemical bonds (about 485 kJ/mol), making it extremely difficult to decompose using traditional oxidation processes. To overcome this, photocatalysts are used to generate high-energy reactive species (e.g., radicals or electrons), which can break the C-F bonds.

Titanium Dioxide (TiO₂)
Titanium dioxide (TiO₂) is widely used to decompose pollutants due to its ability to absorb UV light and trigger strong oxidation reactions. However, breaking C-F bonds requires significant energy, and TiO₂ alone may have limited efficiency for this task.

Cadmium Sulfide (CdS)
Cadmium sulfide (CdS) can utilize visible light, and the reactive species it generates may be more effective at targeting C-F bonds. Specifically, certain radicals and electron states produced by CdS are believed to accelerate the decomposition of C-F bonds.

Comparison of Properties between TiO₂ and CdS

The Recent Research Achievement

A research team from Ritsumeikan University has developed a technique for decomposing PFAS using photocatalysts. This technique has the following key features:

• No Heat Required for Decomposition: Traditionally, high temperatures or strong chemicals were necessary, but this method overcomes that challenge.
• Environmentally Friendly: The use of photocatalysts significantly reduces energy consumption.
• Efficiently Breaks C-F Bonds: This technique can transform waste into a more recyclable form.

PFAS is believed to consist of over 10,000 different compounds, some of which are regulated due to manufacturing and usage restrictions. The ability to decompose these substances can significantly reduce the environmental impact during product disposal.

The decomposition of PFAS is one of the major environmental challenges we face today. With breakthroughs like this research, the advancement of science and technology worldwide will become a key element in safeguarding the future of our planet.

Our company is also committed to developing and promoting environmentally friendly products and technologies.

The post Development of a Photocatalytic Technology to Decompose 'Forever Chemicals' PFAS first appeared on PALCCOAT.

For more details, you can refer to the original study published in Journal of the American Chemical Society here

Source: Tokyo University of Science, "Development of a Technology to Selectively Load Ultrafine Cocatalysts on Hydrogen Evolution Facets of Photocatalysts – Anticipated Practical Application of Hydrogen Production Technology Using Sunlight and Water" (October 7, 2024).

The post Accelerating Next-Generation Hydrogen Production with Photocatalysts first appeared on PALCCOAT.

Nobel Prize

The post Professor Isao Domen of Shinshu University Wins Prestigious Clarivate Citation Laureate Award for Breakthrough Solar Hydrogen Technology first appeared on PALCCOAT.

Basic Concepts of Photocatalysis

Photocatalysis refers to a process in which a material exhibits catalytic activity (the ability to accelerate chemical reactions) when exposed to light. Various materials can demonstrate photocatalytic activity, but titanium dioxide is especially well-known for its superior performance. This technology, discovered in Japan, utilizes sunlight (particularly ultraviolet light) as an energy source to chemically transform surrounding contaminants and harmful substances into harmless materials (water and carbon dioxide) through a process known as "oxidative decomposition."
Additionally, it possesses a characteristic known as "superhydrophilicity," which means it has a high affinity for water, allowing water to spread uniformly across its surface when exposed to light. By leveraging these two properties—oxidative decomposition and superhydrophilicity—self-cleaning effects can be achieved, making it easier to wash away dirt.
This picture book presents how photocatalysts interact with sunlight to improve the environment in an engaging narrative.
Related Page: “What is Photocatalysis? - Two Features of Photocatalyst and Usage”

The Role of the Sun

The sunlight plays a crucial role as an energy source for photocatalysts, and the book illustrates how light triggers chemical reactions in photocatalysts to neutralize dirt and harmful substances. It emphasizes the sun's role in supporting our daily lives through the power of nature.

Real-World Applications

Photocatalysis is widely applied in various aspects of our daily lives, including building facades, window glass, and air purifiers. The book highlights examples of these applications, making it relatable for children by showing them how they can encounter this technology in their everyday surroundings.

Storytelling Format

This book progresses in a storytelling format, where the characters of the Sun and the photocatalyst engage in dialogue, allowing readers to learn about their functions in a fun and enjoyable way. This structure makes complex scientific concepts easier for children to understand. It is filled with educational content that allows readers to learn about scientific principles while also addressing environmental issues and technological innovations.

"A Story of the Sun and Photocatalysts"

We also recommend three additional books exploring the charm and potential of photocatalysis.
"All About Photocatalysis by the Leading Expert - A Complete Illustrated Guide from Basics to Latest Cases" is a comprehensive guide to photocatalytic technology. The author is a leading figure in the field of photocatalysis, providing detailed explanations of the fundamental concepts, practical applications, and latest research findings.
This book clarifies the principles and effects of photocatalysis, presenting specific products and project examples that illustrate its effectiveness. It also delves into the environmental purification and self-cleaning properties of photocatalytic technology, discussing practical applications and future perspectives.
Incorporating numerous illustrations, this content is visually accessible, making it a valuable resource for those interested in photocatalysis, including researchers and technical personnel from various industries.
"Science and Technology for a Long Life" explores scientific advancements aimed at achieving health and longevity. It explains how modern medicine, biotechnology, and environmental technologies support people's health and extend life expectancy. The poignant "memorable quotes" interspersed throughout the text leave a lasting impression.
Dr. Fujishima, by intertwining the latest research outcomes and real-world examples, highlights the impact of science and technology on our lives and the possibilities for the future. It also discusses health maintenance strategies applicable to everyday life and initiatives toward a sustainable society. This book provides insights for pursuing longevity from the perspectives of science and technology.
"All About Photocatalysis by the Leading Expert"

"Science and Technology for a Long Life - Using Photocatalysis as an Example"

"Latest Information Simplified: Photocatalytic Experimental Methods" is authored by Dr. Akira Fujishima and others, providing an easy-to-understand explanation of photocatalytic experimental methods and their applications. This book covers fundamental knowledge of photocatalytic technology along with the latest research findings, making it particularly suitable for those who wish to deepen their understanding through experimentation.
Photocatalytic technology holds immense potential for benefiting our lives and the environment. It encompasses a comprehensive range of information, from basic knowledge to the latest research outcomes, making it an ideal resource for those seeking to enhance their understanding through practical experiments. It offers valuable insights for a diverse audience, from experts to general readers.

"Latest Information Simplified: Photocatalytic Experimental Methods"

The post 2024 Nobel Prize Nominee - What Are the Hidden Characteristics of 'Photocatalysts' Used in Our Daily Lives? first appeared on PALCCOAT.

The Tokyo Metropolitan Industrial Technology Research Institute has announced a new photocatalytic hydrogen production technology utilizing titanium dioxide, which harnesses sunlight and seawater to unlock new possibilities for clean energy. The technique shows significant efficiency improvements through the stable fixation of Ti3+ and ethanol addition, surpassing conventional technologies. Future advancements and practical applications are anticipated, with attention focused on contributions to the sustainable energy sector.

Image of the Wet Bead Mill Grinding Process. Source: Tokyo Metropolitan Industrial Technology Research Institute

Scanning Electron Microscope Image of Ti3+-Doped Titanium Dioxide. Source: Tokyo Metropolitan Industrial Technology Research Institute

Comparison of Hydrogen Production Rates Before and After Treatment and Under Different Light Irradiation Types. Source: Tokyo Metropolitan Industrial Technology Research Institute

Effects of Ethanol in Artificial Seawater Addition. Source: Tokyo Metropolitan Industrial Technology Research Institute

(Cited from: Tokyo Metropolitan Industrial Technology Research Institute)

Research Points

• ・Stabilization of Ti3+: By crushing and agglomerating titanium oxide using an ethanol solvent, Ti3+ with oxygen deficiencies is stably fixed within the lattice. This significantly improved the reaction efficiency during light irradiation.
• ・Significant improvement in hydrogen generation by light irradiation: By simultaneous irradiation with ultraviolet light and visible light, the hydrogen generation rate stabilized 30 minutes after the start, achieving a generation rate 16 times faster than that of the original titanium oxide.
• ・Effect of adding ethanol: By adding a very small amount of ethanol (0.005 vol%) to artificial seawater, hydrogen generation during irradiation with ultraviolet and visible light became five times more stable. Ethanol is said to function as a sacrificial reagent for chloride ions and to play a role in aiding the reaction.

By enabling efficient hydrogen production not only through ultraviolet light but also through visible light, this technology greatly expands the potential for hydrogen as a sustainable energy source. Ongoing research aims to further enhance photocatalytic activity and expand the reaction environment, paving the way for the establishment of practical hydrogen production systems utilizing solar energy.

This technology's continued development is expected to lead to greater energy efficiency, expanded applications, and a low-cost, efficient hydrogen supply, contributing significantly to a decarbonized society.

The post Development of a Titanium Dioxide Photocatalyst for Hydrogen Production from Solar Energy and Seawater first appeared on PALCCOAT.

On October 21, 2024, the Photocatalytic Materials Research Association will host a seminar on "Foundations and Cutting-Edge Applications of Data Science Research." This event will gather experts from around the world to discuss the latest trends in material development using data science and materials informatics.

The Fusion of Data Science and Materials Informatics
Data science has transformed material research, bringing unprecedented efficiency to the field. Professor Keisuke Takahashi from Hokkaido University will present "Fundamentals of Materials Informatics," covering data construction, preprocessing, visualization, and machine learning. These advancements are revolutionizing traditional material discovery.

Broadening the Scope of Application
Associate Professor Miho Hatanaka from Keio University will introduce state-of-the-art developments in functional material design through machine learning. Using small datasets to create highly accurate predictive models, her research focuses on copolymers and catalysts, highlighting the growing trend towards open databases.

Additionally, Shoichi Matsuda from NIMS will showcase "High-throughput Electrolyte Screening Systems," demonstrating how autonomous experiments are accelerating the discovery of new electrolyte materials for batteries.

Industrial Impact
Industries are also embracing these advancements. Kenzaburo Okubo from POLA Chemical Industries will discuss how machine learning is revolutionizing the tactile design of cosmetics, shifting from experience-based processes to predictive models.

Data science and materials informatics are unlocking new possibilities in material development and industry. This seminar is an excellent opportunity to learn about these cutting-edge technologies. For those interested, please visit the Photocatalytic Materials Research Association website to register and get a new perspective on the latest technology trends.

>Photo-Functional Materials Research Society

Photo-Functional Materials Research Society 99th

The post Data Science and Materials Informatics: Expanding the Frontiers of Future Technology first appeared on PALCCOAT.

【Coating for Gravestone】

・Sample：　Gray 1piece、Black 1piece

・Photocatalyst：　PALCCOAT CLEAR-P (undercoat) + CLEAR-G (topcoat)

After half covered, the surface is cleaned and degreased with alcohol.

Normally, an undercoat is not required for inorganic materials such as stone, but we applied CLEAR-P (undercoat) in order to improve the adhesion of the photocatalytic topcoat. Apply 3 layers while drying.

After drying, photocatalytic topcoat CLEAR-G (topcoat) is applied. This time, we adopted it the most transparent solution, it's normally for glass coating. This is also applied in three layers while drying.

Dry. The film is further hardened under sunlight (ultraviolet rays) to make it more robust.

As expected, when divided in half, the white dullness stands out on the dark color base material.

On the whitish color base material, it is not very noticeable, although it depends on the seeing angle.

[Checking hydrophilicity 1st time]

Spray water on the surface to check the hydrophilicity.

Let the first wash air dry once in the sunlight.

[Checking hydrophilicity 2nd time]

Dry in sunlight once, then spray with water again to check the hydrophilicity.

The post Photocatalytic Coating for Gravestone Sample (PALCCOAT CLEAR-P + CLEAR-G) first appeared on PALCCOAT.

The post An outline panel of PALCCOAT, a 3d map of Japan and world were displayed in the 8th floor corridor of Kinshicho Marui (Sumida Industrial Hall) first appeared on PALCCOAT.

The post The Photocatalyst Museum PALCCOAT Booth Renewal first appeared on PALCCOAT.