Paramagnetic anatase titania/carbon nanocomposites

Ivan Zakharchuk; Anton A. Komlev; Ekaterina Soboleva; Tatiana L. Makarova; Dmitry A. Zherebtsov; Damir M. Galimov; Erkki Lähderanta

doi:10.1117/1.JNP.11.032505

6 February 2017 Paramagnetic anatase titania/carbon nanocomposites

Ivan Zakharchuk, Anton A. Komlev, Ekaterina Soboleva, Tatiana L. Makarova, Dmitry A. Zherebtsov, Damir M. Galimov, Erkki Lähderanta

Author Affiliations +

Journal of Nanophotonics, Vol. 11, Issue 3, 032505 (February 2017). https://doi.org/10.1117/1.JNP.11.032505

Abstract

The nanocomposites comprising of anatase titania nanoparticles uniformly distributed inside the porous carbon matrix were synthesized using furfuryl alcohol, tetrabutyltitanate, and nonionic surfactant. The characterization of the nanocomposite by scanning electron microscopy, transmission electron microscopy, energy dispersive x-ray analysis, x-ray diffractometry, and Raman spectroscopy revealed the formation of anatase titania nanoparticles of average sizes 10 to 20 nm. The observed broadening and blueshift of the main Raman peak of titanium dioxide nanoparticles were explained using the phonon confinement effect. The nanocomposite exhibited strong paramagnetism at low temperatures and was diamagnetic at higher temperatures, as well as a small contamination by magnetic impurities was detected. The paramagnetism originated from the amorphous defect-rich carbon and oxygen vacancies in titania.

Citation Download Citation

Ivan Zakharchuk, Anton A. Komlev, Ekaterina Soboleva, Tatiana L. Makarova, Dmitry A. Zherebtsov, Damir M. Galimov, and Erkki Lähderanta "Paramagnetic anatase titania/carbon nanocomposites," Journal of Nanophotonics 11(3), 032505 (6 February 2017). https://doi.org/10.1117/1.JNP.11.032505

Received: 1 November 2016; Accepted: 20 January 2017; Published: 6 February 2017

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available