金属-有机骨架衍生材料由于其在光催化反应中的显著益处而受到很多关注。在这项工作中,首先通过使用CAU-17作为模板的一锅法开发了Z方案ZnIn2S4/Bi2S3分层异质结。特定的制备方法使这两种单体之间具有紧密的界面接触,和CAU-17衍生的Bi2S3具有高表面积和孔隙率,导致有效的电荷分离和O2捕获。因此,用于从O2还原反应中产生光催化H2O2,ZnIn2S4/Bi2S3异质结可以在可见光下在纯水和环境空气中实现995μmolL-1的H2O2产量,分别是ZnIn2S4和Bi2S3的4.5倍和4倍。此外,在四环素溶液中,ZnIn2S4/Bi2S3光催化降解四环素,降解率可达95%,同时,最终H2O2产量达到1223μmolL-1。同样,从含有邻硝基苯酚的废水中也可以获得高产率的H2O2,酸性金黄色,或者酸性红,这些污染物被有效地降解。这项工作揭示了金属有机框架衍生材料在光催化中的潜力,以及提供对H2O2绿色合成和废水处理的见解。
Metal-organic framework derived materials received a lot of attention due to their significant benefits in photocatalytic reactions. In this work, a Z-scheme ZnIn2S4/Bi2S3 hierarchical heterojunction is first developed by a one-pot method using CAU-17 as a template. The specific preparation method endows an intimate interface contact between these two monomers, and CAU-17-derived Bi2S3 possesses a high surface area and porosity, resulting in an efficient charge separation and O2 capture. Thus, for photocatalytic H2O2 production from the O2 reduction reaction, the ZnIn2S4/Bi2S3 heterojunction can achieve an H2O2 yield of 995 µmol L-1 in pure water and ambient air under visible light, 4.5 and 4 times that of ZnIn2S4 and Bi2S3, respectively. In addition, in tetracycline solution, ZnIn2S4/Bi2S3 can degrade tetracycline with a degradation rate of 95% by photocatalysis, and at the same time, a final H2O2 production yield of 1223 µmol L-1 is reached. Similarly, high yields of H2O2 are also obtained from wastewater containing o-nitrophenol, acid golden yellow, or acid red, and these pollutants are effectively degraded. This work reveals the potential of metal-organic framework-derived materials in photocatalysis, as well as provides insights into H2O2 green synthesis and wastewater treatment.