Physicochemical Characteristics and Catalytic Activity of Composite Materials Based on Mixed Oxides MTiO3/TiO2 (М = Co, Ni) in 1,2-Dihydroxybenzene Photodegradation Reactions in Aqueous Solutions

Absalan, Yahya; Isaeva, N. Yu.; Bratchikova, I. G.; Kovalchukova, O. V.; Cherednichenko, A. G.

doi:10.1134/s0965544120050011

Cited by 1 publication

(1 citation statement)

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“…This system is only activated by UV light, which has limited its application. This limitation can be resolved by modifying a TiO 2 nano-photocatalyst for instance through doping [14,15], grafting [16], solid solution, semiconductor coupling, floatability amelioration, immobilization and magnetic separation [17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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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.

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