International Journal "Applied Ceramic Technology" published paper, based on the studies involving MRC, about TiO2 and WO3 films photo-catalytic properties on brass and practical application of the given coatings for brass products

 TiO2 Films on Brass
Structure, mechanical and photo-catalytic properties of titanium dioxide (TiO2) and tungsten oxide (WO3) films on a brass substrate.
Rus На русском Eng In English

Based on the studies involving MRC, international edition Applied Ceramic Technology has published the paper about photo-catalytic properties of tungsten oxide and titanium dioxide on brass substrate as well as practical application of the given coatings for brass products

Photocatalytic WO3 and TiO2 Films on Brass

Olha Mashtalir1,2, Murat Kurtoglu2,3,†, Sergey Pogulay1, Alexey Gogotsi1, Michael Naguib2, Yury Gogotsi2

1 Materials Research Centre, Kiev, 03680, Ukraine

2 Department of Materials Science and Engineering, A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, Pennsylvania

3 Gurallar ArtCraft Inc., Kutahya, Turkey

†Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA

Cite: Mashtalir, O., Kurtoglu, M., Pogulay, S., Gogotsi, A., Naguib, M. and Gogotsi, Y. (2012), Photocatalytic WO3 and TiO2 Films on Brass. International Journal of Applied Ceramic Technology. doi: 10.1111/j.1744-7402.2012.02843.x

 On the SEM picture: brass with titanium dioxide coating (а, b) and brass surface covered with tungsten oxide (с, d)

 

This paper reports on the structure, mechanical, and photocatalytic properties of titanium dioxide (TiO2) and tungsten oxide (WO3) films on a brass substrate. TiO2 and WO3 films have been successfully deposited on brass by a simple sol-gel dip-coating method and it has been shown that, while both films possess photocatalytic properties, WO3 films were superior to TiO2. Higher surface area and rod-like morphology of WO3 films might have contributed to their higher photocatalytic activity. Nanoindentation results have shown that both films attach well to the substrate and possess good mechanical properties.

On the SEM picture: brass with titanium dioxide coating (а, b) and brass surface covered with tungsten oxide (с, d)

Over the last few decades, interest in heterogeneous photocatalysis has been growing because of its promising applications in self-cleaning and antibacterial coatings, water and air purification systems, solar cells, and hydrogen production by water dissociation.

TiO2 has been one of the most studied materials among transition metal oxides because of its unique photoinduced catalytic activity, superhydrophilicity, nontoxicity, physical stability, and chemical inertness. Although TiO2 is still the gold standard, many other semiconductors, such as WO3, CdS, SnO2, SiO2, ZrO2, ZnO, Nb2O3,Fe2O3, SrTiO3, etc., have also been identified as potential photocatalysts. In particular, tungsten oxide (WO3) is a widely studied material because of its high photoactivity.

Therefore, film-substrate compatibility is an additional consideration required when selecting photocatalysts for film applications. While glass and ceramic materials are still the most popular of all substrates for photocatalytic films, metals have also attracted some attention, with the majority of research performed on stainless steel.

Brass is a very common decorative material because of its bright gold-like appearance and is widely used on railings, door handles, and other components that are touched by hands and would benefit from anti-bacterial coatings. Decorative panels on constructions would benefit from self-cleaning and protective coatings that would help to maintain the gold-like appearance of polished surfaces for a longer time.

That is why titanium dioxide and tungsten oxide films on a brass substrate were chosen as the subject of the study. Firstly one evaluated photocatalytic and mechanical properties of both films and then the results were compared with each other to study out what semiconductor is more promising as a photocatalitically active film on brass for practical applications.

Related items:

Materials Research Centre (MRC, Kiev, Ukraine) in cooperation with Drexel University (Drexel University, Philadelphia, USA) designed and produced the first in Ukraine active sample of dye-sensitized solar cell on ТіО2.

 

 

 

News from MRC.ORG.UA

MXene Coating Could Prevent Electromagnetic Interference in Wearable Devices

mxene-emi-fabricResearchers at Drexel University’s College of Engineering have reported that MXene coated fabric is highly effective for blocking electromagnetic waves and potentially harmful radiation. The discovery is a key development for efforts to weave technological capabilities into clothing and accessories. 

 
MRC and Drexel collaborative article on Scalable MXene synthesis is listed among the most accessed in Advanced Engineering Materials journal for the whole year

bulk MXene

This article is also Highly Cited in Web of Science (top 1% of all papers in the field).

 
H2020 MSCA RISE CanBioSe project activities - EsR/ER training and scientific seminar held in MRC, Kyiv, Ukraine, July 30-August 01, 2020

Canbiose project training and seminar

Training of early-staged researchers involved in CanBioSe research works on nanomaterials processing and scientific seminar on Advances in nanomaterials research for biomedical applications, were held with invited experts.

 
Scalable Production System for the Promising, 2D Nanomaterials MXenes

altFor one of the most promising new types of 2D nanomaterials, MXenes, that’s no longer a problem. Researchers at Drexel University and the Materials Research Center in Ukraine have designed a system that can be used to make large quantities of the material while preserving its unique properties

 
CANBIOSE project participant from MRC completed secondment visit to partner organization Vilnius University, Lithuania, on February-March 2020 due to CANBIOSE project

altCANBIOSE project participant from MRC performed secondment visit to project partner organization Vilnius University, Lithuania, on February 24 - March 14 2020.

 
H2020 MSCA RISE SALSETH project participant from MRC V. Balitskiy started secondment at University of Novi Sad, Serbia

altSALSETH project participant from MRC Vitalii Balitskiy was hosted by partners from University of Novi Sad (UNS), Serbia, during his secondment visit according to the project plan.

 
SALSETH Project Kick-off meeting was held in University of Novi Sad, Serbia, on february 28, 2020

altResearch team from Materials Research Centre (MRC), Kyiv, Ukraine, was represented by Vitalii Balitskiy, who made a presentation to project partners about the MRC company, its capabilities, current research projects and main activities.

 
The science of the future and the use of intelligent nanomaterials in advanced technologies. Lecture by Professor Yury Gogotsi for students, schoolchildren of Junior Academy of Sciences of Ukraine in Igor Sikorsky Kyiv Polytechnic Institute,Feb 24, 2020

alt

The science of the future and the use of smart nanomaterials in new technologies. Lecture by Professor Yury Gogotsi for students, and schoolchildren of the Junior Academy of Sciences of Ukraine in Sikorsky Kyiv Polytechnic Institute, February 27, 2020

 
Horizon 2020 NANO2DAY project participant A.Stepura from Polymer Institute of Slovak Academy of Science (Bratislava, Slovakia) was hosted by Materials Research Center (MRC), Kiev, Ukraine, on December 2019-February 2020

pisas--secondment-to-mrc-jan-2020_13.jpg - 86.27 KbAnastasiia Stepura from Polymer Institute Slovak Academy of Science (Bratislava, Slovakia) was hosted by Materials Research Centre  on December 2019- February 2020 during her secondment performing research works due to H2020 NANO2DAY project.

 
H2020 NANO2DAY project participants from MRC Veronika Zahorodna and Oleksiy Gogotsi visited partner organization Polymer Instityte SAS, Bratislava, Slovakia on January 2020

altResearchers from the Materials Research Center (MRC), Kiev, Ukraine,  Oleksiy Gogotsi and Veronika Zahorodna visited Horizon 2020 NANO2DAY project partner organization Polymer Institute of Slovak Academy of Science, Bratislava, Slovakia on January 2020. In cooperation with PISAS colleagues they were working on MXene doped polymer nanocomposites.

 
H2020 NANO2DAY project participant from MRC Ivan Hryshko was visiting project partner organization University of Latvia, Riga, on November-December 2019

altResearch engineer from MRC Ivan Hryshko is being visiting the University of Latvia, where he held a seminar on MXenes

 
Secondment of project participants from MRC O. Gogotsi and V. Zahorodna to project partners from LNEC under Horizon 2020 MSCA RISE Project №690968 NANOGUARD2AR, 12/11-11/12/2019, Lisboan, Portugal

altMRC Director O. Gogotsi and EsR Veronika Zahorodna in a secondment to LNEC, Lisboan, Portugal participated in a work meeting discussing project results and performing engineering research works due to H2020 MSCA RISE project No 690968 NANOGUARD2AR.

 
Horizon 2020 CANBIOSE project participants from Materials Research Center (MRC), Kiev, Ukraine visited partner organization Adam Mickiewicz University in Poznań, Poland, on October 27-November 27, 2019

altIn cooperation with AMU colleagues they were working on nanomaterials testing and characterization.

 
MXENE AT THE FRONTIER OF THE 2D MATERIALS WORLD BEILSTEIN NANOTECHNOLOGY SYMPOSIUM 2019, October 15–17, 2019, Favorite Parkhotel, Mainz, Germany

altThe symposium brought together leading international experts and those researchers who are just entering the exciting world of 2D carbides and nitrides to explore new synthesis methods, better understand properties and find new applications of MXenes.

 
Horizon 2020 NANO2DAY project participants from the Materials Research Center (MRC), Kiev, Ukraine, Zozulia Iuliia and Vitalii Balitskiy visited the partner organization Kaunas University of Technology, Kaunas, Lithuania on August 2019 - October 2019

altIn cooperation with KTU colleagues they were working on engineering simulations of mechanical  properties of nanomaterials and nanocomposites.