10.1186/2228-5326-3-37

Synthesis of visible light active graphene-modified BaCrO4 nanocomposite photocatalyst

PDF HTML
  • Sandeep B Gawande1,
  • Sanjay R Thakare*2,
  1. Department of Chemistry, Government Institute of Science, Nagpur, 440001, IN
  2. Department of Chemistry, Government Institute of Science, Nagpur, 440001, IN Nanotech Laboratory, Department of Chemistry, Science College, Nagpur, 440012, IN
Cover Image

Published in Issue 2013-05-23

How to Cite

Gawande, S. B., & Thakare, S. R. (2013). Synthesis of visible light active graphene-modified BaCrO4 nanocomposite photocatalyst. International Nano Letters, 3(1 (December 2013). https://doi.org/10.1186/2228-5326-3-37
Crossref
Scopus
Google Scholar
Europe PMC

PDF views: 115

HTML views: 79

Abstract

Abstract In situ chemical deposition sol-gel method has been used to prepare graphene oxide-BaCrO 4 (GO-BaCrO 4 ), which was then reduced to graphene-BaCrO 4 (RGO-BaCrO 4 ) under visible-light irradiation. X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy were used to study the morphological characteristics of the prepared composite material. This synthesis method offers effortless incorporation of a visible light active photocatalyst in a composite; the reduction of GO to RGO was carried out under visible light as well. Graphene sheets with high specific surface area and unique electronic properties can be used as a good support for BaCrO 4 and enhance the photocatalytic activity for the degradation of methylene blue dye compared to pure BaCrO 4 . The poor photocatalytic activity of pure BaCrO 4 is due to its fast charge recombination. Enhanced photocatalytic degradation activity is attributed predominantly to the presence of graphene, which serves as an electron collector and transporter to lengthen efficiently the lifetime of the photogenerated charge carriers from BaCrO 4 nanoparticles. The modified surface of BaCrO 4 acts as a good photocatalyst compared to unmodified BaCrO 4 . The optimum reaction time for synthesis and GO concentration in the composite to enhance photocatalytic activity are presented in this article.

Keywords

  • Nanostructures,
  • Semiconductors,
  • Composite materials,
  • Sol-gel growth,
  • Crystal growth
PDF HTML

References

  1. Hernandez-Alonso et al. (2009) Development of alternative photocatalysts to TiO2: challenges and opportunities (pp. 1231-1257) https://doi.org/10.1039/b907933e
  2. Chun et al. (2011) Synthesis of graphene-CdSe composite by a simple hydrothermal method and its photocatalytic degradation of organic dyes (pp. 1577-1583) https://doi.org/10.1016/S1872-2067(10)60264-1
  3. Rehman et al. (2009) Strategies of making TiO2 and ZnO visible light active (pp. 560-569) https://doi.org/10.1016/j.jhazmat.2009.05.064
  4. Yang et al. (2004) Photocatalysis using ZnO thin films and nano needles grown by metal–organic chemical vapor deposition (pp. 1661-1664) https://doi.org/10.1002/adma.200306673
  5. Liu et al. (2011) Microwave-assisted synthesis of CdS-reduced graphene oxide composites for photocatalytic reduction of Cr(VI) (pp. 11984-11986) https://doi.org/10.1039/c1cc14875c
  6. Thakare et al. (2010) Undoped, single phase barite BaCrO4 photocatalyst for the degradation of methylene blue under visible light (pp. 54-58)
  7. Pare et al. (2011) BaCrO4 assisted visible light induced advanced oxidation process for the mineralization of azur B (pp. 1061-1065)
  8. Huang et al. (2012) Graphene-based composites (pp. 666-686) https://doi.org/10.1039/C1CS15078B
  9. Rao et al. (2009) Graphene: the new two-dimensional nanomaterial (pp. 7752-7777) https://doi.org/10.1002/anie.200901678
  10. Manga et al. (2009) Multilayer hybrid films consisting of alternating graphene and titania nanosheets with ultrafast electron transfer and photoconversion properties (pp. 3638-3643) https://doi.org/10.1002/adfm.200900891
  11. Guo et al. (2010) Layered graphene/quantum dots for photovoltaic devices (pp. 3014-3017) https://doi.org/10.1002/anie.200906291
  12. Nethravathi and Rajamathi (2008) Chemically modified graphene sheets produced by the solvothermal reduction of colloidal dispersions of graphite oxide (pp. 1994-1998) https://doi.org/10.1016/j.carbon.2008.08.013
  13. Xiang et al. (2012) Graphene-based semiconductor photocatalysts (pp. 782-796) https://doi.org/10.1039/C1CS15172J
  14. Ng et al. (2010) Reducing graphene oxide on a visible-light BiVO4 photocatalyst for an enhanced photoelectrochemical water splitting (pp. 2607-2612) https://doi.org/10.1021/jz100978u
  15. Gawande and Thakare (2012) Ternary polymer composite of graphene, carbon nitride, and poly(3-hexylthiophene): an efficient photocatalyst (pp. 1759-1763) https://doi.org/10.1002/cctc.201200277
  16. Gawande and Thakare (2012) Graphene wrapped BiVO4 photocatalyst and its enhanced performance under visible light irradiation (pp. 11-18) https://doi.org/10.1186/2228-5326-2-11
  17. Hummers and Offeman (1958) Preparation of graphitic oxide (pp. 1339-1339) https://doi.org/10.1021/ja01539a017
  18. Kovtyukhova et al. (1999) Layer-by-layer assembly of ultrathin composite films from micron-sized graphite oxide sheets and polycations (pp. 771-778) https://doi.org/10.1021/cm981085u
  19. Fujimoto (2003) Theoretical X-ray scattering intensity of carbon with turbostratic stacking and AB stacking structure (pp. 1585-1592) https://doi.org/10.1016/S0008-6223(03)00116-7
  20. Li et al. (2007) X-ray diffraction patterns of graphite and turbostratic carbon (pp. 1686-1695) https://doi.org/10.1016/j.carbon.2007.03.038
  21. Stankovich et al. (2007) Synthesis of graphene based nanosheets via chemical reduction of exfoliated graphite (pp. 1558-1565) https://doi.org/10.1016/j.carbon.2007.02.034
  22. Seger and Kamat (2009) Electrocatalytically active graphene-platinum nanocomposites. Role of 2-D carbon support in PEM fuel cells (pp. 7990-7995) https://doi.org/10.1021/jp900360k
  23. Yang and Liu (2011) Fabrication and characterization of graphene oxide/zinc oxide nanorods hybrid (pp. 8950-8954) https://doi.org/10.1016/j.apsusc.2011.05.070
  24. Akhavan (2011) Photocatalytic reduction of graphene oxides hybridized by ZnO nanoparticles in ethanol (pp. 11-18) https://doi.org/10.1016/j.carbon.2010.08.030
  25. Xiong et al. (2010) Photocatalytic degradation of dyes over graphene-gold nanocomposites under visible light irradiation (pp. 6099-6101) https://doi.org/10.1039/c0cc01259a