Centre Technology Transfer CITTRU

Visible light photoactive materials based on modified nanocrystalline titanium dioxide for disinfection and sterilization

Posted by Centre Technology Transfer CITTRUResponsive · Innovative Products and Technologies · Poland

Summary of the technology

Titanium dioxide based materials are commonly known as photocatalysts of environmental and biomedical relevance. Photoactive TiO2 irradiated with ultraviolet light shows antiseptic, fungicidal, disinfecting and odour-neutralizing properties. It can be used for production of self-cleaning surfaces as well as disinfection, sterilization or odour-neutralizing agents. Currently used TiO2 material are active only with UV light. Modification of the material done by research team of the Jagiellonian University allows to activate TiO2 with use of visible light.

Description of the technology

The subject of the offer covers materials based on modified nanocrystalline titanium dioxide that can be applied for an efficient photocatalytic microorganisms inactivation or organic pollutants degradation under visible light irradiation. The main advantages of the technology include visible light induced strong effect of phototoxicity towards microorganisms allowing elimination of expensive and harmful ultraviolet light sources, formation of transparent colloidal solutions that can be easily applied for various surfaces impregnation and coating, stability in a wide range of pH, lack of the dark-toxicity of both the modified material and its components, lack of any negative influence either on natural environment or human body, variety of possible applications and low production cost.

Specifications

The subject of this offer includes photocatalytic materials produced by a smart modification of nanocrystalline titanium dioxide. The new materials absorb visible light that initiates the photocatalytic processes. Under these conditions photodegradation of organic compounds and bacteria inactivation proceed very efficiently. Experimental tests of the bovine serum albumin photodegradation and Escherichia coli photoinactivation confirmed a high photocatalytic activity of the modified nanocrystalline titanium dioxide under visible light irradiation conditions.

Main advantages of its use

  • formation of transparent colloidal solutions that can be easily applied for various surfaces impregnation and coating thus forming thin photocatalytic layers;
  • lack of any negative influence either on natural environment or human body;
  • lack of the dark-toxicity of both the modified material and its components;
  • low production costs.
  • stability in a wide range of pH, especially in the neutral conditions (pH=7), contrary to unmodified TiO2 stable in the form of transparent colloids only in acidic media;
  • visible light induced strong effect of phototoxicity towards microorganisms allowing elimination of expensive and harmful ultraviolet light sources;

Applications

  • agents for microorganisms photoinactivation;
  • cleaning solutions for contact lenses.
  • disinfection and sterilization agents, particularly suitable for surgical instruments and other glass or plastic components used in medical applications;
  • self-cleaning layers, particularly suitable for transparent surfaces;

Additional information (attached documents)

Additional information (attached documents)

Related keywords

  • Agrofood Industry
  • Industrial Technologies
  • Physical Sciences and Exact Sciences
  • Biological Sciences
  • Protecting Man and Environment
  • Laboratory equipment
  • ultraviolet light
  • sterilization
  • disinfection
  • photoactive
  • photoactive materials
  • phototoxicity
  • photoinactivation
  • surgical instruments
  • surgery
  • hospitals
  • medical applications
  • biomedical
  • contact lenses
  • ophthalmology

About Centre Technology Transfer CITTRU

Technology Transfer Office from Poland

Centre for Innovation, Technology Transfer and University Development (CITTRU) is a part of Jagiellonian University, whose role is to promote university research, to support innovation and to create cooperation with the business. CITTRU main task is to offer the scientific achievements of the Jagiellonian University in the market by providing legal protection, licensing, sale of intellectual property rights, creation of academic business, coordination of company-ordered research projects, etc. Currently promoted technologies are mainly focused on new materials science, pharmacology and medical technology. Inventions offered by Jagiellonian University are promoted and awarded during numerous exhibitions, e.g. 58th International Exhibition of Innovation, Research and New Technologies INNOVA (BRUSSELS 2009), 38th International Exhibition of Invention New Techniques & Products (Geneva 2010) or 24th International exhibition of environmental equipment, technologies and services POLLUTEC (Paris 2009).

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