Ag2S/WO3 Composites with Full Spectrum Photocatalytic Activity

  • Biao Zhang School of Science, Tianjin Polytechnic University, Tianjin 300387, People’s Republic of China
  • HaiMing Zhang School of Science, Tianjin Polytechnic University, Tianjin 300387, People’s Republic of China
  • LiJuan Wei
Keywords: Ag2S/WO3, Z-band, full spectrum.

Abstract

The Ag2S/WO3 composites were successfully prepared by two-step method. The composition, morphology and optical properties of the materials were characterized by XRD, EDS and SEM. The results show that the degradation rate of methylene blue (MB) in Ag2S/WO3 composites is about 1.2 times higher than that in WO3 under photocatalytic degradation under the same conditions. The reason is that this study has potential application value in the fields of solar cells and photochemical reactions due to the use of full spectrum to enhance photocatalytic efficiency.

References

. Gar A M, Ookawara S, Fukushi D, et al. Improved WO3 photocatalytic efficiency using ZrO2 and Ru for the degradation of carbofuran and ampicillin.[J]. Journal of Hazardous Materials, 2016, 302:225-231.

. Nashed R, Alamgir F M, Soon Jang S, et al. Bandgap bowing in Ta-W-O system for efficient solar energy conversion: Insights from density functional theory and X-ray diffraction[J]. Applied Physics Letters, 2013, 103(13):6446.

. Dozzi M V, Marzorati S, Longhi M, et al. Photocatalytic activity of TiO 2 -WO 3 mixed oxides in relation to electron transfer efficiency[J]. Applied Catalysis B Environmental, 2016, 186:157-165.

. Kong E, Chang Y, Park H, et al. Quantum Dots: Bandgap Tuning by Using a Lattice Distortion Induced by Two Symmetries That Coexist in a Quantum Dot (Small 7/2014)[J]. Small, 2014, 10(7):1300-1307.

. Li P, Li H J, Tu W G, et al. Photocatalytic application of Z-type system[J]. Acta Physica Sinica, 2015, 64(9):448.

. Yanrui Li, Leilei Li, Yunqi Gong. Towards full-spectrum photocatalysis: Achieving a Z-scheme between Ag2S and TiO2 by engineering energy band alignment with interfacial Ag[J]. 2015, 8(11):3621-3629.

. L W.Z型Ag3PO4/Ag2MoO4异质结光催化剂构建和光催化降解有机污染物[J]. 催化学报, 2017, 38(2):337-347.

. Ho W. 二氧化钛基Z型光催化剂综述(英文)[J]. 催化学报, 2017, 38(12):1936-1955.

Published
2019-06-19
Section
Articles