화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.25, No.9, 455-461, September, 2015
DOI10.3740/MRSK.2015.25.9.455  Export Citation
Synthesis of Nanosized SnS-TiO2 Photocatalysts with Excellent Degradation Effect of TBA under Visible Light Irradiation
Ze-Da Meng1, 2, Lei Zhu2, Kefayat Ullah2, Shu Ye2, and Won-Chun Oh2, †
  • 1Jiangsu Key Laboratory of Environmental Functional Materials, College of Chemistry and Bioengineering, Suzhou University of Science and Technology, Suzhou 215009, China
  • 2Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam-do 356-706, Korea
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SnS-TiO2 nanocomposites are synthesized using simple, cheap, and less toxic SnCl2 as the tin (II) precursor. The prepared nanoparticles are characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV-Vis diffuse reflectance spectra (DRS). The XRD and TEM results indicate that the prepared product has SnS nanoparticles and a grain diameter of 30 nm. The DRS demonstrate that SnS-TiO2 possesses the absorption profile across the entire visible light region. The generation of reactive oxygen species is detected through the oxidation reaction from 1,5-diphenyl carbazide (DPCI) to 1,5-diphenyl carbazone (DPCO). It is found that the photocurrent density and photocatalytic effect increase with the modified SnS. Excellent catalytic degradation of Texbrite BA-L (TBA) solution is observed using the SnS-TiO2 composites under visible light irradiation. It is proposed that both the strong visible light absorption and the multiple exciton excitations contribute to the high visible light photocatalytic activity.
Keywords:SnS;Texbrite BA-L (TBA);visible light;photosensitized;TEM
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