Preparation and Photocatalytic Properties of Graphene/SrTiO₃ Thin Film Catalyst

Abstract:

A novel graphene-bridged SrTiO₃ (STO) thin film loaded on the glass was fabricated using a facile sol-gel method followed by the dip-coating and spin-coating method. As-prepared STO film and GO/STO film were tested by XRD, SEM to identify the composition and surface morphology. The as-prepared thin film catalyst was employed to degrade methylene blue (MB) in water under near ultraviolet ray irradiation. Compared to pure STO, GO/STO prepared by dip-coating method displayed good photocatalytic degradation efficiency with 58% removal of MB (60 mL, 5mg/L) in 6.0 h, the GO/STO prepared by spin-coating method displayed more superior degradation efficiency with 94% removal of MB (60 mL,5mg/L) in 6.0 h. The influences of MB volume and the different methods were also investigated in details. The enhanced photocatalytic activities could be attributed to the suppression of charge recombination, high specific surface area and great adsorption capability of GO/STO. This work provides a promising approach to construct novel film GO/STO with high stability and photodegradation efficiency that can be applied in efficient treatment pollutants in wastewater.

• Periodical: Materials Science Forum (Volume 972)
• Pages: 191-199
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.972.191
• Online since: October 2019
• Authors: Jian Liu*, Yan Li, Na Zhang, Dong Ping Duan
• Keywords: Film Photocatalyst, Graphene, Photocatalysis, Strontium Titanate

References

[1] L. E. de-Bashan and Y. Bashan: Water Res Vol.38 (2004), pp.4222-46.

[2] S. A. Ansari, M. M. Khan, M. O. Ansari and M. H. Cho: New Journal of Chemistry Vol.40 (2016), pp.3000-3009.

[3] M. U. D. Sheikh, G. A. Naikoo, M. Thomas, M. Bano and F. Khan: New Journal of Chemistry Vol.40 (2016), pp.5483-5494.

[4] M. Nasr, R. Viter, C. Eid, R. Habchi, P. Miele and M. Bechelany: New Journal of Chemistry Vol.41 (2017), pp.81-89.

DOI: 10.1039/c6nj03088b

[5] R. Saravanan, M. M. Khan, V. K. Gupta, E. Mosquera, F. Gracia, V. Narayanan and A. Stephen: Journal of colloid and interface science Vol.452 (2015), pp.126-133.

DOI: 10.1016/j.jcis.2015.04.035

[6] S. Rajendran, M. M. Khan, F. Gracia, J. Qin, V. K. Gupta and S. Arumainathan: Scientific Reports Vol.6 (2016), p.31641.

[7] R. Saravanan, N. Karthikeyan, V. Gupta, E. Thirumal, P. Thangadurai, V. Narayanan and A. Stephen: Materials Science and Engineering: C Vol.33 (2013), pp.2235-2244.

DOI: 10.1016/j.msec.2013.01.046

[8] H. C. Chen, C. W. Huang, J. C. S. Wu and S. T. Lin: Journal of Physical Chemistry C Vol.116 (2012), pp.7897-7903.

[9] B. Paik, M. Tsubota, T. Ichikawa and Y. Kojima: Chemical Communications Vol.46 (2010), pp.3982-3984.

[10] A. Bhattacharyya, S. Kawi and M. B. Ray: Catalysis Today Vol.98 (2004), pp.431-439.

[11] B. F. Gao, P. S. Yap, T. M. Lim and T. T. Lim: Chemical Engineering Journal Vol.171 (2011), pp.1098-1107.

[12] J. Cui, T. He and X. Zhang: Catalysis Communications Vol.40 (2013), pp.66-70.

[13] Y. Wu, W. Chen, G. Chen, L. Liu, Z. He and R. Liu: Nanomaterials (Basel) Vol.8 (2018).

[14] A. Antonello, G. Soliveri, D. Meroni, G. Cappelletti and S. Ardizzone: Catalysis Today Vol.230 (2014), pp.35-40.

DOI: 10.1016/j.cattod.2013.12.033

[15] J. Zhu, Y. Cao and J. He: J Colloid Interface Sci Vol.420 (2014), pp.119-26.

[16] R. S. Varma, N. Thorat, R. Fernandes, D. C. Kothari, N. Patel and A. Miotello: Catalysis Science & Technology Vol.6 (2016), pp.8428-8440.

[17] N. Zhang, Y. Zhang and Y. J. Xu: Nanoscale Vol.4 (2012), pp.5792-813.

[18] R. S. Sonawane, B. B. Kale and M. K. Dongare: Materials Chemistry and Physics Vol.85 (2004), pp.52-57.

[19] D. Heger, J. Jirkovsky and P. Klan: J Phys Chem A Vol.109 (2005), pp.6702-9.