Synthesis of TiC@C-anatase/rutile@polyvinyl alcohol/xylan: a powerful photocatalyst for degradation of organic pollutant under visible light

Author:

Absalan Yahya12ORCID,Gholizadeh Mostafa1,Razavi Mohammad Reza1,Dastani Zeynab1,Vu Anh Thi Ngoc3ORCID,Kovalchukova Olga45ORCID

Affiliation:

1. Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, IR Iran

2. Department of chemistry, Georgia University, Athens, GA 30602, USA

3. Environmental Analysis Laboratory, Southern Branch of Vietnam-Russia Tropical Center, 3/2 Street District 10, Ho Chi Minh City, Vietnam

4. Department of Inorganic and Analytical Chemistry, Kosygin Russian State University (Technology, Design, Art), 33 Sadovnicheskaya Street, Moscow 117997, Russia

5. General Chemistry Department, RUDN University, 6 Miklukho-Maklaya Street, Moscow 117198, Russia

Abstract

In this study, a composite bearing titanium carbide (TiC), titanium dioxide (TiO 2 ), polyvinyl alcohol and xylan (TiC@C-anatase/rutile@polyvinyl alcohol/xylan) was synthesized and applied as a photocatalyst for the degradation of bromophenol blue (BPB) solution through several steps. Nanostructure of TiC and TiO 2 in the anatase and rutile phases was obtained through heat treatment of TiC at different times and temperatures (TiC@AR) which led to a reduction in energy bandgap from UV to visible light, in addition to the enhancement of the surface activity. After TiC@AR polymerization by xylan and polyvinyl alcohol and obtaining TiC@AR/PX, the energy bandgap reduced to IR range (52% of the sunlight) while showing an enhancement in the surface activity. The photocatalytic activity of the compounds was tested by studying the decomposition of BPB solution under visible light. The result illustrated the ability of TiC and TiC@AR to decrease the concentration of BPB after 150 min by 35% and 37%, respectively, while this reduction was 72% for TiC@AR/PX. Considering the effective parameters, the energy bandgap and the surface layer played key roles in photocatalytic degradation.

Funder

This paper has been supported by the RUDN University Strategic Academic Leadership Program and the Research Council of Ferdowsi University of Mashhad

Publisher

The Royal Society

Subject

Multidisciplinary

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