A Comparison of Different A-, A-B-, and B-Site Incorporated in (Ba0.5Sr0.5)TiO3 on Photocatalytic Application | Zendy

Tassanee Tubchareon | Zendy; Rachan Klaysri | Zendy; Piyasan Praserthdam | Zendy

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A Comparison of Different A-, A-B-, and B-Site Incorporated in (Ba_0.5Sr_0.5)TiO₃ on Photocatalytic Application

Author(s) -

Tassanee Tubchareon,

Rachan Klaysri,

Piyasan Praserthdam

Publication year - 2015

Publication title -

advances in optical technologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.124

H-Index - 25

eISSN - 1687-6407

pISSN - 1687-6393

DOI - 10.1155/2015/837183

Subject(s) - catalysis , methylene blue , photocatalysis , oxygen , materials science , nuclear chemistry , inorganic chemistry , chemical engineering , chemistry , organic chemistry , engineering

The structural modification of Ba0.5Sr0.5TiO3 (BST) nanocatalyst was successfully synthesized via sol-gel process. The BST catalyst was modified by A-site (A-BST), A-B-site (A-B-BST), and B-site (B-BST) in order to investigate the effect of structurally modified BST catalyst for photocatalytic decolorization of methylene blue. The structurally modified BST catalysts can increase the nonradiation energy such as phonon energy compared to that of BST one. The partial incorporation of the A-BST catalyst was evidenced by the higher-ordered structure by increasing number of Ti4+ ions and the lattice oxygen. The A-B-BST and A-BST catalysts were given more electron-transfer in the TiO6 than that of BST and B-BST catalysts, respectively. The A-B-BST catalyst promoted the oxidation of the lattice oxygen by holes capturing to form the chemisorbed oxygen, presenting the highest photobleaching activity of methylene blue. On the other hand, more oxygen vacancies recombination of BST catalyst compared to that of structurally modified BST catalysts presented the reduction of photocatalytic activity

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