Titania Synthesized through Regulated Mineralization of Cellulose and Its Photocatalytic Activity | Sciact - CRIS-система Института катализа

Titania Synthesized through Regulated Mineralization of Cellulose and Its Photocatalytic Activity Научная публикация

Журнал

RSC Advances
ISSN: 2046-2069

Вых. Данные

Год: 2015, Номер: 5, Страницы: 8544-8551 Страниц : 8 DOI: 10.1039/C4RA15862H

Ключевые слова

Ambient conditionsHydrolysis and condensationInert atmospheresInsoluble fibrilsModerate temperaturePhotocatalytic activitiesPhotocatalytic propertySunlight irradiation

Авторы

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

Организации

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

Информация о финансировании (4)

1	Российский фонд фундаментальных исследований	12-03-00726 (01201265357)
2	Сибирское отделение Российской академии наук	35
3	Уральское отделение Российской академии наук	12-C-3-1002
4	Дальневосточное отделение Российской академии наук	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 CAPlus OpenAlex

Поступила в редакцию:	5 дек. 2014 г.
Принята к публикации:	23 дек. 2014 г.
Опубликована online:	24 дек. 2014 г.

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

БД	Цитирований
Web of science	20
Scopus	22
РИНЦ	24
OpenAlex	20