标题：Synthesis of a WO3 photocatalyst with high photocatalytic activity and stability using synergetic internal Fe3+ doping and superficial Pt loading for ethylene degradation under visible-light irradiation
作者：Liu, Xiaolei; Zhai, Huishan; Wang, Peng; Zhang, Qianqian; Wang, Zeyan; Liu, Yuanyuan; Dai, Ying; Huang, Baibiao; Qin, Xiaoyan; Zhang 更多 作者机构：[Liu, Xiaolei; Zhai, Huishan; Wang, Peng; Zhang, Qianqian; Wang, Zeyan; Liu, Yuanyuan; Huang, Baibiao; Qin, Xiaoyan; Zhang, Xiaoyang] Shandong Univ, S 更多
通讯作者：Zhang, Qianqian;Zhang, QQ;Huang, BB
通讯作者地址：[Zhang, QQ; Huang, BB]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
来源：CATALYSIS SCIENCE & TECHNOLOGY
摘要：Ethylene (C2H4) is harmful for storage and fresh-keeping of fruits and vegetables. Photocatalytic technology is an effective and environmentally friendly approach for degrading ethylene. Herein, we first report the synthesis of a WO3 photocatalyst with high photocatalytic activity and stability using synergetic internal Fe3+ doping and superficial Pt loading for ethylene degradation under visible-light irradiation. Internal Fe3+ doping not only enhances the visible-light absorption but also improves the stability to some degree due to more positive reduction potential of Fe3+/Fe2+ than that of W6+/W5+ and separation efficiency of the photo-generated carriers. Furthermore, the loading of Pt as a co-catalyst through the photo-reduction of H2PtCl6 on the surface of Fe-doped WO3 promotes the effective transfer of photo-generated electrons and reduces the photo-corrosion of WO3. Due to the synergistic effect, extremely high degradation speed can be achieved by doping 0.25 mol% Fe and loading 0.75 wt% Pt for WO3, which exceeds that of pristine WO3 by about 3.3 times under visible-light irradiation. In addition, due to the excellent stability of Pt@Fe-doped WO3, it has good industrial application prospects in the field of photocatalysis.