Titania Synthesized through Regulated Mineralization of Cellulose and Its Photocatalytic Activity | Sciact - CRIS-system of Boreskov Institute of Catalysis

Titania Synthesized through Regulated Mineralization of Cellulose and Its Photocatalytic Activity Full article

Journal

RSC Advances
ISSN: 2046-2069

Output data

Year: 2015, Number: 5, Pages: 8544-8551 Pages count : 8 DOI: 10.1039/C4RA15862H

Tags

Ambient conditionsHydrolysis and condensationInert atmospheresInsoluble fibrilsModerate temperaturePhotocatalytic activitiesPhotocatalytic propertySunlight irradiation

Authors

Postnova Irina ^1,2 , Kozlova Ekaterina ^3,4 , Cherepanova Svetlana ^3,4 , Tsybulya Sergei ^3,4 , Rempel Andrey ⁵ , Shchipunov Yury ¹

Affiliations

1	Institute of Chemistry, Far East Department, Russian Academy of Sciences, 690022 Vladivostok, Russia
2	Chemical Department, Far-East Federal University, Vladivostok 690950, Russia
3	Institute of Catalysis, Siberian Department, Russian Academy of Sciences, Novosibirsk, 630090, Russia
4	Research and Educational Center for Energy Efficient Catalysis, Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia
5	Institute of Solid State Chemistry, Ural Department, Russian Academy of Sciences, Ekaterinburg, 620990, Russia

Funding (4)

1	Russian Foundation for Basic Research	12-03-00726 (01201265357)
2	Siberian Branch of the Russian Academy of Sciences	35
3	Ural Branch of the Russian Academy of Sciences	12-C-3-1002
4	Far East Branch of Russian Academy of Sciences	15-I-3-006

Cellulose used for thousands of years has been rediscovered recently as novel smart material for various nanotechnological applications. Its insoluble fibrils are functionalized by using mineralization methods developed in nanochemistry. Here they are coated by titania synthesized in one stage by a new green approach. It consists in controlling the localization of very fast hydrolysis and condensation reactions. Cellulose fibrils are placed in ethylene glycol with such amount of water that is absorbed entirely by the hygroscopic polysaccharide. This hydrating water works as a reaction centre when the precursor reaches it. Instant hydrolysis and following condensation reactions proceeding mainly on the fibrils provide their mineralization. Titania prepared at ambient conditions is in amorphous state. It is transferred in crystalline forms under a variety of conditions including moderate temperature (80oС), calcination in air and cellulose carbonization in an inert atmosphere. These treatments result in photocatalytic activity. Even cellulose treated at the moderate conditions demonstrates significant sel f-cleaning ability consisting in fast degradation of methylene blue under the outdoor sunlight irradiation. Photocatalytic activity of carbon-titania hybrids includes a side reaction of the oxidation of the carbonized fibrils. Photocatalytic properties of some of calcinated samples, not containing organics were comparable with a commercial photocatalyst.

Postnova I. , Kozlova E. , Cherepanova S. , Tsybulya S. , Rempel A. , Shchipunov Y.
Titania Synthesized through Regulated Mineralization of Cellulose and Its Photocatalytic Activity
RSC Advances. 2015. N5. P.8544-8551. DOI: 10.1039/C4RA15862H WOS Scopus РИНЦ AN OpenAlex

Submitted:	Dec 5, 2014
Accepted:	Dec 23, 2014
Published online:	Dec 24, 2014

Web of science:	WOS:000347721300002
Scopus:	2-s2.0-84921296012
Elibrary:	23966364
Chemical Abstracts:	2014:2178507
OpenAlex:	W2095561375

DB	Citing
Web of science	20
Scopus	22
Elibrary	24
OpenAlex	20