Abstract
A magnetic Bi2Fe4O9/Bi2MoO6 heterojunction was synthesized by a facile one-pot solvothermal method, and the photodegradation performance was evaluated by degrading methylene blue (MB) and tetracycline hydrochloride (TC). Compared with pure Bi2MoO6 composite, the Bi2Fe4O9/Bi2MoO6 heterojunction with 10% Bi2Fe4O9 had much higher catalytic performance, which can degrade MB and TC completely within 150 and 180 min. The characterization results show that a p–n heterojunction formed between Bi2Fe4O9 and Bi2MoO6. Combining with trapping experiments, a direct Z-scheme mechanism was proposed to effectively separate photodegradable electron–hole pairs at the Bi2Fe4O9/Bi2MoO6 heterojunction interface. Moreover, the obtained catalysts can be recovered easily from liquid system via the external magnet field due to the sufficient magnetism. After five recycles, no significant decrease on the degradation efficiency of MB and TC can be found show that BiFeMo-2 has excellent chemical stability in the application of organic pollutants degradation under visible-light irradiation. Thus, the prepared Bi2Fe4O9/Bi2MoO6 catalyst has the advantages of high visible light catalytic activity, excellent chemical stability and magnetic separation, and has broad application prospects in environmental purification.
Graphic Abstract
A novel magnetic recoverable Bi2Fe4O9/Bi2MoO6 catalyst was facilely prepared. BiFeMo-2 sample showed a higher activities for MB and TC photodegradation under visible-light irradiation due to formation of a p–n heterojunction with high quality interface between Bi2Fe4O9 (220) and Bi2MoO6 (131), which can improve charge transfer effectively follow the Z-scheme mechanism.
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Long J, Wang S, Chang H, Zhao B, Liu B, Zhou Y, Wei W, Wang X, Huang L, Huang W (2014) Bi2MoO6 nanobelts for crystal facet-enhanced photocatalysis. Small 10:2791–2795
Zhang L, Xu T, Zhao X, Zhu Y (2010) Controllable Synthesis of Bi2MoO6 and effect of morphology and variation in local structure on photocatalytic activities. Appl Catal B Environ 98:138–146
Shimodaira Y, Kato H, Kobayashi H, Kudo A (2006) Photophysical properties and photocatalytic activities of Bismuth Molybdates under visible light irradiation. J Phys Chem B 110:17790–17797
Zhang L, Xu T, Zhao X, Zhu Y (2010) Controllable synthesis of Bi2MoO6 and effect of morphology and variation in local structure on photocatalytic activities. Appl Catal B Environ 98:138–146
Shang M, Wang W, Ren J, Sun S, Zhang L (2011) Nanoscale kirkendall effect for the synthesis of Bi2MoO6 boxes via a facile solution-phase method. Nanoscale 3:1474–1476
Zhang Y, Li L, Han Q, Tang L, Chen X, Hu J, Li Z, Zhou Y, Liu J, Zou Z (2017) Bi2MoO6 nanostrip networks for enhanced visible-light photocatalytic reduction of CO2 to CH4. Chem Phys Chem 18:3240–3244
Zhao J, Lu Q, Wang C, Liu S (2015) One-dimensional Bi2MoO6 nanotubes: controllable synthesis by electrospinning and enhanced simulated sunlight photocatalytic degradation performances. J Nanopart Res 17:1–11
Liang J, Liu F, Deng J, Li M, Tong M (2017) Efficient bacterial inactivation with Z-scheme AgI/Bi2MoO6 under visible light irradiation. Water Res 123:632–641
He Q, Ni Y, Ye S (2017) Heterostructured Bi2O3/Bi2MoO6 nanocomposites: simple construction and enhanced visible-light photocatalytic performance. RSC Adv 7:27089–27099
Wang M, You MY, Zhang K, Zhang Y, Han J, Fu R, Liu SY, Zhu T (2018) Bi3.64Mo0.36O6.55/Bi2MoO6 heterostructure composite with enhanced photocatalytic activity for organic pollutants degradation. J Alloy Compd 766:1037–1045
Guo JH, Shi L, Zhao JY, Wang Y, Tang KB, Zhang WQ, Xie CZ, Yuan XY (2018) Enhanced visible-light photocatalytic activity of Bi2MoO6 nanoplates with heterogeneous Bi2MoO6−x@Bi2MoO6 core-shell structure. Appl Catal B Environ 224:692–704
Pang YJ, Li YW, Xu GQ, Hu YT, Kou ZK, Feng Q, Lv J, Zhang Y, Wang J, Wu YC (2019) Z-scheme carbon-bridged Bi2O3/TiO2 nanotube arrays to boost photoelectrochemical detection performance. Appl Catal B Environ 248:255–263
Pang YJ, Xu GQ, Feng Q, Liu JQ, Lv J, Zhang Y, Wu YCh (2017) Synthesis of α-Bi2Mo3O12/TiO2 nanotube arrays for photoelectrochemical COD detection application. Langmuir 33:8933–8942
Dai Z, Qin F, Zhao HP, Ding J, Liu YL, Chen R (2016) Crystal defect engineering of aurivillius Bi2MoO6 by Ce doping for increased reactive species production in photocatalysis. ACS Catal 6:3180–3192
Ch MX, Zhang ZSh (2017) Pd-doped Bi2MoO6 plasmonic photocatalysts with enhanced visible light photocatalytic performance. Appl Surf Sci 392:169–180
Alemi AA, Kashfi R, Shabani B (2014) Preparation and characterization of novel Ln (Gd3+, Ho3+ and Yb3+)-doped Bi2MoO6 with Aurivillius layered structures and photocatalytic activities under visible light irradiation. J Mol Catal A Chem 392:290–298
Hou XM, Tian YL, Zhang X, Dou SL, Pan L, Wang WJ, Li Y, Zhao JP (2015) Preparation and characterization of Fe3O4/SiO2/Bi2MoO6 composite as magnetically separable photocatalyst. J Alloys Compd 638:214–220
Tao R, Shao CL, Li XH, Li XW, Liu S, Yang S, Zhao CC, Liu YH (2018) Bi2MoO6/BiFeO3 heterojunction nanofibers: enhanced photocatalytic activity, charge separation mechanism and magnetic separability. J Colloid Interf Sci 529:404–414
Xiu ZY, Cao Y, Xing ZP, Zhao TY, Li ZZ, Zhou W (2019) Wide spectral response photothermal catalysis-fenton coupling systems with 3D hierarchical Fe3O4/Ag/Bi2MoO6 ternary hetero-superstructural magnetic microspheres for efficient high-toxic organic pollutants. J Colloid Interf Sci 533:24–33
Wang DJ, Zhang J, Guo L, Fu F, Yue LL (2014) Synthesis of Fe3+ doped Bi2MoO6 nanoplate and its performance on photocatalytic degradation of salicylic acid. Adv Mater Res 864–867:382–385
Zhang H, Tong T, Chen J, Cheng J (2015) Synthesis and visible light photocatalytic properties of Bi2Fe4O9 particles via EDTA-assisted sol-gel route. J Sol-Gel Sci Technol 78:135–143
Zhang T, Shen Y, Qiu Y, Liu Y, Xiong R, Shi J, Wei J (4636s) Facial synthesis and photoreaction mechanism of BiFeO3/Bi2Fe4O9 heterojunction nanofibers. ACS Sustain Chem Eng 5:4630s–4636s
Cai L, Yao JW, Li JB, Zhang YF, Wei Y (2019) Sonochemical synthesis of BiOI-TiO2 heterojunction with enhanced visible-light-driven photocatalytic activity. J Alloys Compd 783:300–309
Wang F, Zhang J, Jia DM, Ma YQ, Ma L, Lu GX (2019) Flower-like structured Fe3O4−MQDs/Bi2WO6/GNs heterojunction with high-efficiently charge transfer for organic contaminants degradation. J Taiwan Ins Chem Eng 99:276–283
Lee MS, Park SS, Lee GD, Ju CS, Hong SS (2005) Synthesis of TiO2 particles by reverse microemulsion method using nonionic surfactants with different hydrophilic and hydrophobic group and their photocatalytic activity. Catal Today 101:283–290
Li BS, Lai C, Zeng GG, Qin L, Yi H, Huang DL, Zhou CY, Liu XG, Cheng M, Xu P, Zhang C, Huang FL, Liu SY (2018) Facile hydrothermal synthesis of Z-Scheme Bi2Fe4O9/Bi2WO6 heterojunction photocatalyst with enhanced visible light photocatalytic activity. ACS Appl Mater Interfaces 10:18824–18836
Jia X, Cao J, Lin H, Zhang M, Guo X, Chen S (2017) Transforming type-I to type-II heterostructure photocatalyst via energy band engineering: a case study of I-BiOCl/I-BiOBr. Appl Catal B Environ 204:505–514
Weng S, Chen B, Xie L, Zheng Z, Liu P (2013) Facile in situ synthesis of a Bi/BiOCl nanocomposite with high photocatalytic activity. J Mater Chem A 1:3068–3075
Pang YJ, Qiang F, Kou ZK, Xu GQ, Gao F, Wang B, Pan ZH, Lv J, Zhang Y, Wu YC (2020) Surface precleaning strategy intensifies interface coupling of Bi2O3/TiO2 heterostructure for enhanced photoelectrochemical detection properties. Mater Chem Front. https://doi.org/10.1039/c9qm00701f
Acknowledgments
The work was supported by National Natural Science Foundation of China (51808040), Shandong Natural Science Foundation of China (ZR2018QB007), Shandong Province Higher Educational Science and Technology Program (J14LC54), Binzhou City science and technology development Project (2014ZC0212) and Binzhou University (BZXYHZ20161010 and BZXYL1801 and BZXYLG1922) research Funds.
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Zhang, H., Bian, H., Zhang, H. et al. Magnetic Separable Bi2Fe4O9/Bi2MoO6 Heterojunctions in Z-Scheme with Enhanced Visible-Light Photocatalytic Activity for Organic Pollutant Degradation. Catal Lett 150, 2464–2473 (2020). https://doi.org/10.1007/s10562-020-03157-4
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DOI: https://doi.org/10.1007/s10562-020-03157-4