Preparation and Photocatalytic Activity of ABi 2 O 6 /BiOCl (A = Mg, Sr, Ca) Heterojunction | Zendy

Huang Zhenyu | Zendy; Wang Yan | Zendy; Jung Dongwoon | Zendy

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Preparation and Photocatalytic Activity of ABi 2 O 6 /BiOCl (A = Mg, Sr, Ca) Heterojunction

Author(s) -

Huang Zhenyu,

Wang Yan,

Jung Dongwoon

Publication year - 2018

Publication title -

bulletin of the korean chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.237

H-Index - 59

ISSN - 1229-5949

DOI - 10.1002/bkcs.11542

Subject(s) - photocatalysis , heterojunction , visible spectrum , materials science , catalysis , nuclear chemistry , chemistry , optoelectronics , organic chemistry

MgBi 2 O 6 , CaBi 2 O 6 , and SrBi 2 O 6 were successfully synthesized by a substitution reaction of NaBiO 3 with MgCl 2 , CaCl 2 , and Sr(NO 3 ) 2 , respectively. Then, ABi 2 O 6 /BiOCl (A = Mg, Ca, Sr) heterojunction compounds with different ABi 2 O 6 :BiOCl ratios were prepared by treating ABi 2 O 6 with an appropriate amount of HCl. The color of the ABi 2 O 6 /BiOCl heterojunction was changed from dark to bright as the amount of BiOCl was increased. The absorbances of the ABi 2 O 6 /BiOCl heterojunctions in the visible range were decreased as the ratio of BiOCl became higher. The photocatalytic activities of the heterojunction samples were higher than that of sole ABi 2 O 6 or BiOCl. The highest photocatalytic efficiency was achieved when the ABi 2 O 6 :BiOCl ratio was 15:85. The organic pollutant was decomposed completely within 1 h under visible light when the 15:85 catalyst was used. The reactive species in the photocatalytic reaction with the ABi 2 O 6 /BiOCl photocatalysts were ·O 2 ‐ and h + H + .

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