Effects of Calcination Temperature and Photocatalytic Activity of 30%SrTiO3/HZSM-5 Synthesized by Sol-gel Route

Title:Effects of Calcination Temperature and Photocatalytic Activity of 30%SrTiO3/HZSM-5 Synthesized by Sol-gel Route

Volume: 6 Issue: 2

Author(s): Wenjie Zhang, Chuanguo Li, Feifei Bi, Xijuan Chen and Hongbo He

Affiliation:

Keywords: HZSM-5, photocatalyst, sol-gel, strontium titanate.

Abstract: A 30%SrTiO₃/HZSM-5 photocatalyst was synthesized by solgel method using HZSM-5 as the support for strontium titanate. The materials are mainly composed of perovskite SrTiO₃ that is favored at high calcination temperature. The diffraction intensities of SrTiO₃ increase with raising calcination temperature while the diffraction intensity of SrCO₃ decreases at the same time. Crystal growing of the supported SrTiO₃ occurs along with the increase of calcination temperature. SrTiO₃ disperses on the surface of HZSM-5 after loading. Surface area of 30%SrTiO₃/HZSM-5 is much larger than that of unsupported SrTiO₃. The maximum photocatalytic degradation efficiency is found in the composite calcinated at 700 °C. After 90 min of irradiation, 93.8% of the initial RBR-X3B is degraded on 30%SrTiO₃/0.3HZSM-5. Nearly 80% of the initial activity of the supported SrTiO₃ is maintained after 4 photocatalytic recycles.

Cite this article as:

Zhang Wenjie, Li Chuanguo, Bi Feifei, Chen Xijuan and He Hongbo, Effects of Calcination Temperature and Photocatalytic Activity of 30%SrTiO3/HZSM-5 Synthesized by Sol-gel Route, Nanoscience & Nanotechnology-Asia 2016; 6 (2) . https://dx.doi.org/10.2174/2210681206666160402003437