Substrate-dependent photoreactivities of BiOBr nanoplates prepared at different pH values

doi:10.1016/S1872-2067(15)60986-X

Abstract

Abstract:

In this study, we showed that BiOBr nanoplates prepared at different pH values have substrate-dependent photocatalytic activities under visible-light irradiation. The BiOBr nanoplates synthesized at pH 1 (BOB-1) degraded salicylic acid more effectively than did those obtained at pH 3 (BOB-3), but the order of their photocatalytic activities in rhodamine B (RhB) degradation were reversed. Electrochemical Mott-Schottky and zetα-potential measurements showed that BOB-1 had a more positive valence band and lower surface charge, leading to superior photocatalytic activity in salicylic acid degradation under visible light. However, BOB-3 was more powerful in RhB degradation because larger numbers of superoxide radicals were generated via electron injection from the excited RhB to its more negative conduction band under visible-light irradiation; this was confirmed using active oxygen species measurements and electron spin resonance analysis. This study deepens our understanding of the origins of organic-pollutant-dependent photoreactivities of semiconductors, and will help in designing highly active photocatalysts for environmental remediation.

Key words: Degradation, Visible light, Substrate dependent photoreactivity, Bismuth oxybromide nanoplate, Rhodamine B, Salicylic acid

Zhihui Ai, Jilin Wang, Lizhi Zhang. Substrate-dependent photoreactivities of BiOBr nanoplates prepared at different pH values[J]. Chinese Journal of Catalysis, 2015, 36(12): 2145-2154.

×
share this article

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(15)60986-X

https://www.cjcatal.com/EN/Y2015/V36/I12/2145

References

[1] Yu C L, Wang Q Z, Yu J C, Liu H, Wei L F. Chin J Catal (余长林, 周晚琴, 余济美, 刘鸿, 魏龙福. 催化学报), 2014, 35: 1609
[2] Li J D, Yu C L, Fang W, Zhu L H, Zhou W Q, Fan Q Z. Chin J Catal (李家德, 余长林, 方稳, 朱丽华, 周晚琴, 樊启哲. 催化学报), 2015, 36: 987
[3] Wang X T, Li Y M, Liu X, Gao S M, Huang B B, Dai Y. Chin J Catal (王潇彤, 李延敏, 刘新, 高善民, 黄伯杨, 戴瑛. 催化学报), 2015, 36: 389
[4] Wang J L, Yu Y, Zhang L Z. Appl Catal B, 2013, 136-137: 112
[5] Zhang X, Ai Z H, Zhang L Z. J Phys Chem C, 2008, 112: 747
[6] Deng Z T, Chen D, Peng B, Tang F Q. Cryst Growth Des, 2008, 8: 2995
[7] Huang W L, Zhu Q S. J Comput Chem, 2008, 30: 183
[8] Li R, Gao X Y, Fan C M, Zhang X C, Wang Y W, Wang Y F. Appl Surf Sci, 2015, 355: 1075
[9] Liu C B, Zhao W W, Huang Y, Wang H M, Zhang B. Tetrahedron, 2015, 71: 4344
[10] Ye L Q, Su Y R, Jin X L, Xie H Q, Cao F P, Guo Z. Appl Surf Sci, 2014, 311: 858
[11] Cheng H F, Huang B B, Dai Y. Nanoscale, 2014, 6: 2009
[12] Zhang J, Fu W, Xi J H, He H, Zhao S C, Liu H W, Ji Z G. J Alloys Comp, 2013, 575: 40
[13] Lee J S, Choi W Y. J Phys Chem B, 2005, 109: 7399
[14] Ryu J G, Choi W Y. Environ Sci Technol, 2008, 42: 294
[15] Venema D P, Hollman P C H, Janssen K P L T M, Katan M B. J Agric Food Chem, 1996, 44: 1962
[16] Paterson J R, Srivastava R, Baxter G J, Graham A B, Lawrence J R. J Agric Food Chem, 2006, 54: 2891
[17] Matsuda H, Kaburagi K, Matsumoto S, Kurihara K, Tochigi K, Tomono K. J Chem Eng Data, 2009, 54: 480
[18] Sun M, Li D Z, Chen Y B, Chen W, Li W J, He Y H, Fu X Z. J Phys Chem C, 2009, 113: 13825
[19] Sun M, Li D Z, Zheng Y, Zhang W J, Shao Y, Chen Y B, Li W J, Fu X Z. Environ Sci Technol, 2009, 43: 7877
[20] Ishikawa A, Takata T, Kondo J N, Hara M, Kobayashi H, Domen K. J Am Chem Soc, 2002, 124: 13547
[21] Zhang J S, Chen X F, Takanabe K, Maeda K, Domen K, Epping J D, Fu X Z, Antonietti M, Wang X C. Angew Chem Int Edt, 2010, 49: 441
[22] Bruda C, Chen X B, Narayanan R, El-Sayed M A. Chem Rev, 2005, 105: 1025
[23] Suttiponparnit K, Jiang J K, Sahu M, Suvachittamont S, Charinpanitkul T, Biswas P. Nanoscale Res Lett, 2011, 6: 1
[24] Chen S Y, Wang L W. Chem Mater, 2012, 24: 3659
[25] Ge S X, Zhang L Z. Environ Sci Technol, 2011, 45: 3027
[26] Yin M C, Li Z S, Kou J H, Zou Z G. Environ Sci Technol, 2009, 43: 8361
[27] Linsebigler A L, Lu G Q, Yates J T. Chem Rev, 1995, 95: 735