SEMICONDUCTOR MATERIALS

Photocatalytic degradation of RhB and TNT and photocatalytic water splitting with CZTS microparticles

S. S. Shinde

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 Corresponding author: E-amil: physics.sambhaji2006@gmail.com

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Abstract: Cu2ZnSnS4 (CZTS) is a main candidate material for solar energy conversion through both photovoltaics and photocatalysis based on environmentally friendly elements and with a direct band gap of 1.5 eV. We report the synthesis of quasi Cu2ZnSnS4 microparticles with unprecedented narrow size distributions. The structural, morphological and core level analysis has been carried out by XRD, SEM and XPS techniques. These microparticles have shown excellent photocatalytic activity toward degradation of Rhodamine B dye (RhB) and TNT under visible light. The extent of mineralization has been analyzed by COD and TOC values. Photocatalytic water splitting for H2 generation has also been reported.

Key words: Rhodamine BTNTCZTSphotocatalysisH2 production



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Fig. 1.  X-ray diffraction patterns of as-grown and annealed CZTS particles.

Fig. 2.  Typical FESEM images of chemically prepared as-grown and annealed (at 200 C) CZTS particles.

Fig. 3.  Typical XPS core level peaks of chemically prepared as-grown and annealed (at 200 C) CZTS particles.

Fig. 4.  Plot of (a) extinction spectra and (b) degradation kinetics versus reaction time for RhB.

Fig. 5.  Plot of (a) extinction spectra and (b) degradation kinetics versus reaction time for TNT.

Fig. 6.  Extent of mineralization by COD and TOC versus reaction time for RhB and TNT.

Fig. 7.  Hydrogen evolution rate of CZTS particles with reaction time with recycle runs for five times.

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    Received: 21 November 2014 Revised: Online: Published: 01 July 2015

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      S. S. Shinde. Photocatalytic degradation of RhB and TNT and photocatalytic water splitting with CZTS microparticles[J]. Journal of Semiconductors, 2015, 36(7): 073003. doi: 10.1088/1674-4926/36/7/073003 S. S. Shinde. Photocatalytic degradation of RhB and TNT and photocatalytic water splitting with CZTS microparticles[J]. J. Semicond., 2015, 36(7): 073003. doi: 10.1088/1674-4926/36/7/073003.Export: BibTex EndNote
      Citation:
      S. S. Shinde. Photocatalytic degradation of RhB and TNT and photocatalytic water splitting with CZTS microparticles[J]. Journal of Semiconductors, 2015, 36(7): 073003. doi: 10.1088/1674-4926/36/7/073003

      S. S. Shinde. Photocatalytic degradation of RhB and TNT and photocatalytic water splitting with CZTS microparticles[J]. J. Semicond., 2015, 36(7): 073003. doi: 10.1088/1674-4926/36/7/073003.
      Export: BibTex EndNote

      Photocatalytic degradation of RhB and TNT and photocatalytic water splitting with CZTS microparticles

      doi: 10.1088/1674-4926/36/7/073003
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      • Corresponding author: E-amil: physics.sambhaji2006@gmail.com
      • Received Date: 2014-11-21
      • Accepted Date: 2015-01-28
      • Published Date: 2015-01-25

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