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首页> 外文期刊>Catalysis science & technology >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
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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

机译：合成WO3的光催化剂具有高光催化活性和稳定性协同作用的内部Fe3 +掺杂和表面Pt加载下的乙烯降解可见光照射

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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.
机译：对存储和乙烯(C2H4)是有害的水果和蔬菜的保鲜。光催化技术是一种有效的和环保的降解方法乙烯。WO3的光催化剂光催化高使用协同作用的内部活动和稳定Fe3 +掺杂和表面的Pt加载乙烯降解在可见光下辐照。提高了可见光吸收也提高了稳定性在一定程度上由于更多积极的还原电位Fe3 + /价比将+ / W5 +和分离效率photo-generated运营商。加载Pt co-catalyst通过photo-reduction H2PtCl6的表面Fe-doped WO3促进的有效转移photo-generated电子和减少了photo-corrosion WO3。效果,极高的降解速度通过掺杂0.25 mol % Fe和加载0.75对WO3 wt % Pt,超过原始WO3可见光下约3.3倍辐照。稳定Pt@Fe-doped WO3,好工业领域的应用前景光催化作用。

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