Facile solvo-hydrothermal synthesis of Bi2MoO6 for the photocatalytic reduction of CO2 into ethanol in water under visible light

  • Camila Silva RibeiroEmail author
  • Marla Azário Lansarin


Bi2MoO6 photocatalysts were synthesized by the hydro- and solvothermal methods. Using different solvents, pH values of the precursor suspensions and temperature during synthesis were tested, by and experimental design, to investigate the effect of these variables on the catalysts’ photocatalytic activity. To evaluate and compare the physical properties of the samples, X-ray diffraction analysis, SEM, BET measurements, UV–vis spectroscopy and zeta potential were applied. The results revealed that the pH is the statistically significant variable more important for both solvents and differences in catalysts characterizations, like morphology and crystallinity, were found with the solvents change. The as-synthesized samples exhibited good performance for the photoreduction of CO2 into ethanol in liquid phase. The yields of ethanol obtained over Bi2MoO6–H2O and Bi2MoO6–EG/Et catalysts, under the optimal conditions, were 34.44 and 24.43 µmol g−1 h−1, respectively.


Bi2MoO6 CO2 reduction Photocatalysis Visible light 



The authors gratefully acknowledge the financial support of CAPES and CNPq.

Supplementary material

11144_2019_1591_MOESM1_ESM.docx (2.1 mb)
Supplementary material 1 (DOCX 2195 kb)


  1. 1.
    Tahir M, Amin NS (2013) Recycling of carbon dioxide to renewable fuels by photocatalysis: prospects and challenges. Renew Sustain Energy Rev 25:560–579. CrossRefGoogle Scholar
  2. 2.
    Sun Z, Talreja N, Tao H, Texter J, Muhler M, Strunk J, Chen J (2017) Catalysis of carbon dioxide photoreduction on nanosheets: fundamentals and challenges. Angew Chem Int Ed 57(26):7610–7627. CrossRefGoogle Scholar
  3. 3.
    Akple MS, Low J, Liu S, Cheng B, Yu J, Ho W (2016) Fabrication and enhanced CO2 reduction performance of N-self-doped TiO2 microsheet photocatalyst by bi-cocatalyst modification. J CO2 Util 16:442–449. CrossRefGoogle Scholar
  4. 4.
    Li K, Peng B, Peng T (2016) Recent advances in heterogeneous photocatalytic CO2 conversion to solar fuels. ACS Catal 6(11):7485–7527. CrossRefGoogle Scholar
  5. 5.
    Peng Y, Zhang Y, Tian F, Zhang J, Yu J (2017) Structure tuning of Bi2MoO6 and their enhanced visible light photocatalytic performances. Crit Rev Solid State Mater Sci 42(5):347–372. CrossRefGoogle Scholar
  6. 6.
    Sun S, Wang W (2014) Advanced chemical compositions and nanoarchitectures of bismuth based complex oxides for solar photocatalytic application. RSC Adv 4(88):47136–47152. CrossRefGoogle Scholar
  7. 7.
    Dumrongrojthanath P, Thongtem T, Phuruangrat A, Thongtem S (2015) Glycolthermal synthesis of Bi2MoO6 nanoplates and their photocatalytic performance. Mater Lett 154(Supplement C):180–183. CrossRefGoogle Scholar
  8. 8.
    Yang Z, Shen M, Dai K, Zhang X, Chen H (2018) Controllable synthesis of Bi2MoO6 nanosheets and their facet-dependent visible-light-driven photocatalytic activity. Appl Surf Sci 430:505–514. CrossRefGoogle Scholar
  9. 9.
    Yu C, Wu Z, Liu R, Dionysiou DD, Yang K, Wang C, Liu H (2017) Novel fluorinated Bi2MoO6 nanocrystals for efficient photocatalytic removal of water organic pollutants under different light source illumination. Appl Catal B 209(Supplement C):1–11. CrossRefGoogle Scholar
  10. 10.
    Mu JJ, Zheng GH, Dai ZX, Zhang LY, Yao ZF, Ma YQ (2017) A superior visible light-driven photocatalyst: rare earth-loaded Bi2MoO6 catalysts. J Mater Sci 28(19):14747–14757. Google Scholar
  11. 11.
    Guo C, Xu J, Wang S, Zhang Y, He Y, Li X (2013) Photodegradation of sulfamethazine in an aqueous solution by a bismuth molybdate photocatalyst. Catal Sci Technol 3(6):1603–1611. CrossRefGoogle Scholar
  12. 12.
    Liang J, Deng J, Liu F, Li M, Tong M (2018) Enhanced bacterial disinfection by Bi2MoO6-AgBr under visible light irradiation. Colloids Surf B 161:528–536. CrossRefGoogle Scholar
  13. 13.
    Dai W, Yu J, Xu H, Hu X, Luo X, Yang L, Tu X (2016) Synthesis of hierarchical flower-like Bi2MoO6 microspheres as efficient photocatalyst for photoreduction of CO2 into solar fuels under visible light. CrystEngComm 18(19):3472–3480. CrossRefGoogle Scholar
  14. 14.
    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. ChemPhysChem 18(22):3240–3244. CrossRefGoogle Scholar
  15. 15.
    Bi J, Che J, Wu L, Liu M (2013) Effects of the solvent on the structure, morphology and photocatalytic properties of Bi2MoO6 in the solvothermal process. Mater Res Bull 48(6):2071–2075. CrossRefGoogle Scholar
  16. 16.
    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 98(3–4):138–146. CrossRefGoogle Scholar
  17. 17.
    Phuruangrat A, Jitrou P, Dumrongrojthanath P, Ekthammathat N, Kuntalue B, Thongtem S, Thongtem T (2013) Hydrothermal synthesis and characterization of Bi2MoO6 nanoplates and their photocatalytic activities. J Nanomater 2013:8. Google Scholar
  18. 18.
    Hu J, Weng S, Zheng Z, Pei Z, Huang M, Liu P (2014) Solvents mediated-synthesis of BiOI photocatalysts with tunable morphologies and their visible-light driven photocatalytic performances in removing of arsenic from water. J Hazard Mater 264:293–302. CrossRefGoogle Scholar
  19. 19.
    Zhu YN, Mu JJ, Zheng GH, Dai ZX, Zhang LY, Ma YQ, Zhang DW (2016) Morphology, photocatalytic and photoelectric properties of Bi2MoO6 tuned by preparation method, solvent, and surfactant. Ceram Int 42(15):17347–17356. CrossRefGoogle Scholar
  20. 20.
    Zhang B, Li J, Gao Y, Chong R, Wang Z, Guo L, Zhang X, Li C (2017) To boost photocatalytic activity in selective oxidation of alcohols on ultrathin Bi2MoO6 nanoplates with Pt nanoparticles as cocatalyst. J Catal 345(Supplement C):96–103. CrossRefGoogle Scholar
  21. 21.
    Patnam H, Bharat LK, Hussain SK, Yu JS (2018) Effect of solvents on the morphology and optical properties of rare-earth ions doped BiOBr 3D flower-like microparticles via solvothermal method. J Alloy Compd 763:478–485. CrossRefGoogle Scholar
  22. 22.
    Zhu L, Zhang W-D, Chen C-H, Xu B, Hou M-F (2011) Solvothermal synthesis of bismuth molybdate hollow microspheres with high photocatalytic activity. J Nanosci Nanotechnol 11(6):4948–4956. CrossRefGoogle Scholar
  23. 23.
    Li J, Liu X, Sun Z, Pan L (2015) Mesoporous yolk-shell structure Bi2MoO6 microspheres with enhanced visible light photocatalytic activity. Ceram Int 41(7):8592–8598. CrossRefGoogle Scholar
  24. 24.
    Meng X, Zhang Z (2016) Bismuth-based photocatalytic semiconductors: introduction, challenges and possible approaches. J Mol Catal A 423(Supplement C):533–549. CrossRefGoogle Scholar
  25. 25.
    Ye L, Jin X, Liu C, Ding C, Xie H, Chu KH, Wong PK (2016) Thickness-ultrathin and bismuth-rich strategies for BiOBr to enhance photoreduction of CO2 into solar fuels. Appl Catal B 187:281–290. CrossRefGoogle Scholar
  26. 26.
    Ola O, Maroto-Valer MM (2015) Review of material design and reactor engineering on TiO2 photocatalysis for CO2 reduction. J Photochem Photobiol C 24:16–42. CrossRefGoogle Scholar
  27. 27.
    Hurtado L, Natividad R, García H (2016) Photocatalytic activity of Cu2O supported on multi layers graphene for CO2 reduction by water under batch and continuous flow. Catal Commun 84:30–35. CrossRefGoogle Scholar
  28. 28.
    Mao J, Peng T, Zhang X, Li K, Ye L, Zan L (2013) Effect of graphitic carbon nitride microstructures on the activity and selectivity of photocatalytic CO2 reduction under visible light. Catal Sci Technol 3(5):1253–1260. CrossRefGoogle Scholar
  29. 29.
    Dai W, Xu H, Yu J, Hu X, Luo X, Tu X, Yang L (2015) Photocatalytic reduction of CO2 into methanol and ethanol over conducting polymers modified Bi2WO6 microspheres under visible light. Appl Surf Sci 356:173–180. CrossRefGoogle Scholar
  30. 30.
    Liu Y, Huang B, Dai Y, Zhang X, Qin X, Jiang M, Whangbo M-H (2009) Selective ethanol formation from photocatalytic reduction of carbon dioxide in water with BiVO4 photocatalyst. Catal Commun 11(3):210–213. CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Departament of Chemical EngineeringFederal University of Rio Grande do SulPorto AlegreBrazil

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