A visible-light-active BiFeO3/ZnS nanocomposite for photocatalytic conversion of greenhouse gases

다국어 초록 (Multilingual Abstract)

Given the changes in environmental conditions in the world, photocatalytic conversion of greenhouse gases is of great interest today. Our aim was to increase the photocatalytic efficiency of BiFeO3/ZnS (p-n heterojunction photocatalyst) by varying the molar ratio of ZnS to perovskite structure of BiFeO3 using hydrothermal synthesis. The results of X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), FT-IR spectroscopy showed the small crystal size and suitable distribution of ZnS particles on the BiFeO3 structure. The results of UV-visible, and photoluminescence (PL) spectroscopy analyses showed the good behavior of p-n heterostructure in absorption of visible light and lowering electron-hole recombination. The best visible light photocatalytic efficiency of CO2 reduction, 24.8%, was obtained by an equimolar ratio of BiFeO3/ZnS.

참고문헌 (Reference)

1 X. Chang, 41 (41): 739-, 2015

2 E. Karamian, 16 : 194-, 2016

3 H. Rodhe, 248 : 1217-, 1990

4 M. Torabi Merajin, 44 : 239-, 2013

5 W. Subramonian, 187 : 298-, 2017

6 C. Y. Teh, 317 : 586-, 2017

7 Z. Qin, 6 : 52665-, 2016

8 N. Nuraje, 5 : 8752-, 2013

9 J.K. Kim, 59 : 4006-, 2005

10 T. Gao, 59 : 6-, 2014

11 T. Baran, 178 : 170-, 2015

12 Y. Zhang, 21 : 4168-, 2011

13 W. Ramadan, 15 : 1848-, 2013

14 S. Kaur, 98 : 86-, 2016

15 L. Kashinath, 695 : 799-, 2017

16 W. Ramadan, 15 : 1848-, 2013

17 P. Iranmanesh, 24 (24): 046104-, 2015

18 B. Matovic, 42 : 615-, 2016

19 Y. Zhang, 14 : 8432-, 2012

20 K.K. Som, 45 : 4-, 1992

21 G. S. Lotey, 21 : 206-, 2014

22 M. Cebela, 43 : 1256-, 2017

23 R. Yousefi, 255 : 6985-, 2009

24 L. Li, 6 : 24-, 2014

25 N. Yazdanpour, 118 : 1-, 2013

26 G. Mahmodi, 97 : 186-, 2013

27 T. Soga, "Nanostructured materials for solar energy conversion, 1st Ed." Elsevier 2006

28 임영환, "Effective photoconversion of CO2 into CH4 over Ti30Si70MCM-41 nanoporous catalyst photosensitized by a ruthenium dye" 한국화학공학회 34 (34): 1669-1677, 2017