A Patent Success from IU Faculty of Engineering

The patent of the Faculty of Engineering’s Chemistry and Chemical Engineering Departments, which is supported by the Istanbul University Scientific Research Project Coordination Unit and is an examined patent with 20 years of protection, has been registered.

The two inventions that have been brought to life by the efforts of the faculty members of the Department of Chemistry and the Department of Chemical Engineering of the Faculty of Engineering will provide important services for humanity.

The patent, entitled “Antibacterial acacia Senegal / Fe-silica nanobiocomposite”, has been brought to life by the academic members of IU Faculty of Engineering Chemistry Department’s Department of Physical Chemistry, Prof. Dr. Ayben Kilislioğlu, Assoc. Prof. Dr. Tuba Şişmanoğlu and Dr. Ayşen Kolan.

“It Will Be Used in Many Areas Including Especially Hospitals”

Prof. Dr. Ayben Kilislioğlu, who is a part of the invention team, stated that they were happy to achieve such a success as the academic members of Istanbul University, and said, “We have come to the stage where this invention will be beneficial to humanity. We started our research with the thesis study of one of our students, Ayşen Kolan, in 2012 and we have worked with Asst. Prof. Selcan Karakuş and Assoc. Prof. Tuba Şişmanoğlu. Later we went on to prepare an effective antibacterial material on harmful microorganisms. Our goal here is to produce biogenic anti-bacterial powder material that is not toxic to human health but is toxic to harmful microorganisms. For this reason, we have prepared a main structure using substances that are not very toxic and do not accumulate in human body metabolism. The structure we have prepared displayed extremely effective antibacterial characteristics.”

Indicating that this invention is intended for use in building materials, Prof. Dr. Kilislioğlu said, “This material was a material that could withstand quite high temperatures. The material we have prepared shows antibacterial characteristics when used in building materials. The invention has become a material that will benefit people in public places, especially in hospitals, and we are currently on the last step of turning it into a product.”

Underlining the high cost of using high technology, Prof. Dr. Kilislioğlu added, “When you use advanced technology, the cost is very high. This seems to be an advantage to some extent. But in fact, using advanced technology has a huge disadvantage; it increases the cost significantly. In our work, we prepared these materials using traditional chemical methods with the facilities provided by our university. But for the product we have created on the nano scale, we have used advanced technology measurement techniques and proved the structure by characterizing the material”.

Referring to the benefits of the material being very low cost, Prof. Dr. Kilislioğlu said, “It is estimated that the antibacterial bio-nano material that is formulated will be obtained at a low cost. You also know it is very efficient. This actually was not really important for us, but then we realized how important it is in terms of commercialization”.

Prof. Dr. Kilislioğlu also stated that the prepared material prevented the formation of another bacteria in the “Escherichia coli” or caused the existing bacteria to die, and added, “We come across escherichia coli everywhere from school dining halls to hospitals. It is a very satisfying result that the material is also effective on this bacterium. As a result, it prevents the formation of bacteria or causes the existing bacteria to die.”

“High temperature resistant material” 


Assoc. Dr. Tuba Şişmanoğlu, who has emphasized Eczacıbaşı is continuing its works at the point where the invention turns into a product, said: “During the glazing, it is increased to 1200-1250 degrees. The material we produce is rather durable.”

Referring to the benefits of the invention, Assoc. Dr. Şişmanoğlu said: “All the chemicals used during the production of nanocomposite materials are very cheap and ample in the market. We have also found that they are less risky in occupational safety, occupational health and risk assessment works. Potential uses of this invention are ceramic, paint, wood industry, kitchen, bathroom materials, hospital and intensive care materials. Our material is quite durable. So, it is a very valuable work for us. It is also a great success for our university.”

The invention called “Benzaldehyde Production with High Selectivity by Photocatalytic Method” has been implemented by Prof. Dr. Gülin Selda Pozan Soylu, who is an academic member of IU Engineering Faculty/Chemical Engineering Department of Process and Reactor Design.


“It will be used in many fields from medicine to food” 


Prof. Dr. Dr. Gülin Selda Pozan Soylu, by stating that the study she had conducted together with graduate student Eda Sınırtaş between 2013-2014 resulted in a patent, said: “Our work is about the production of benzaldehyde which is important as commercially. Benzaldehyde has an important range of application in cosmetics, perfumery, medicine and paint industry. Our aim, unlike other classical methods, is to produce benzaldehyde with higher selectivity and efficiency in a shorter time. Its reaction in high selectivity and 100% efficiency has completed in 15 minutes with the nano-sized catalysts that we have prepared within a period of more than a year.”

Prof. Dr. Soylu, who has added the two important dimensions of work in her speech, said, “Our two key points in our work have been to synthesize catalysts with cheap starting materials and simple methods and also to obtain benzaldehyde with high selectivity in the appropriate reaction medium. We have succeeded in both of them. We have synthesized the catalyst by simple methods and prepared a binary mixture of zirconium dioxide and titanium dioxide. Unlike the conventional methods, we have successfully achieved our reaction with a method like photooxidation which is about green chemistry. In this context, our patent has been registered as a patent for examination, and especially the short-term completion of the reaction has highlighted other studies in the literature. It has been an alternative to the reactions that have taken place in longer reaction duration. We are continuing our works so that this invention can find application commercially within Istanbul University. ”

Translated by Eda AYDEMİR and İrem YAŞAR 

IU Department of Press and Public Relations 


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