National University of Kaohsiung /  Prof. Ruey-Chi Wang

 Pain Points Solved 

Conventional polymer materials are difficult to degrade, and environmental purification technologies are often constrained by energy consumption or reliance on specific light sources.

In the transition toward AI-driven net-zero emissions, industries urgently require innovative material solutions that can actively purify the environment while also possessing circular and sustainable characteristics.

 Technology Introduction 

This invention provides a low-cost, high-efficiency photocatalytic material applicable to water treatment, along with its preparation method.

The preparation method involves sintering carbon–nitrogen precursors to obtain g-C₃N₄ powder, which is then uniformly mixed with an aqueous aluminum nitrate solution. The resulting mixture is subjected to low-temperature calcination to produce a g-C₃N₄/AlOOH composite powder. After grinding and washing, the material can be directly used as a photocatalyst for water treatment applications.

The photocatalytic material developed in this invention is capable of absorbing visible light, effectively degrading organic pollutants, and inactivating algae. It is suitable for mass production and can be widely applied in water treatment technologies.

Figure 1. Plant-Based Leather

Figure 2. Agricultural Mulch Film              Figure 3. Recycled Film

 Application Examples 

Patented Visible-Light Responsive Technology Utilizing visible-light-absorbing photocatalytic materials (Patent No. I866650), this technology actively decomposes pollutants, provides antibacterial effects, and eliminates odors under natural light conditions.

Integration with Biodegradable Substrates By combining the patented materials with eco-friendly polymers, we have developed masterbatches and films with biodegradable properties, significantly reducing environmental impact.

Industry–Academia Collaboration Excellence This initiative brings together strong R&D capabilities with Oswald Color Technology’s expertise in green chemistry, color engineering, and customized manufacturing.

Proprietary Brand: “Earth Awaken” We have successfully developed a diverse portfolio of ESG-oriented applications, including photocatalytic membranes, water purification solutions, and plant-based leather.

Application Value and Impact This technology provides highly scalable green solutions for smart buildings, aquaculture, sustainable packaging, and self-cleaning antibacterial equipment—effectively supporting enterprises in achieving ESG sustainability goals and advancing toward AI-driven net-zero transformation.

 Related Links 

None

 Patent Name and Number 

I866650,Taiwan patent，Visible light-absorbing photocatalytic material, its preparation method and its use possesses good photostability and low toxicity, and can be effectively applied to water treatment technologies such as degradation of organic pollutants and algae inactivation，    WANG RUEY CHI; CHENG HSIU CHENG; LIN TING YU; PENG HSIN CHENG， 2024/12/11-2043/11/26

 Industry-Academia / Tech Transfer Partner 

Industry-Academia Cooperation: Ostwald Color Technology Co., Ltd

 Honors and Awards  

None

 Technical Contact  

Vivian Lee, Administrative Assistant 

National University of Kaohsiung
Tel: +886 7-5916639
Email: vivianlee@nuk.edu.tw