一种由TiO和Ru(ii)共敏化的B基催化剂对脱氯的光催化活性增强。
Enhanced photocatalytic activity of a B-based catalyst co-photosensitized by TiO and Ru(ii) towards dechlorination.
作者信息
Sun Ying, Zhang Wei, Ma Tian-Yi, Zhang Yu, Shimakoshi Hisashi, Hisaeda Yoshio, Song Xi-Ming
机构信息
Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University Shenyang 110036 P. R. China
School of Chemical Engineering, University of Adelaide Adelaide SA 5005 Australia.
出版信息
RSC Adv. 2018 Jan 2;8(2):662-670. doi: 10.1039/c7ra13037f.
A novel hybrid photocatalyst denoted as B-TiO-Ru(ii) was prepared by co-immobilizing a B derivative and trisbipyridine ruthenium (Ru(bpy) ) on the surface of a mesoporous anatase TiO microspheres and was characterized by DRS, XRD, SEM and BET By using the hybrid photocatalyst, DDT was completely didechlorinated and a small part of tridechlorinated product was also detected in the presence of TEOA only after 30 min of visible light irradiation. Under simulated sunlight, the hybrid exhibited a significantly enhanced photocatalytic activity for dechlorination compared with B-TiO under the same condition or itself under visible light irradiation due to the additivity in the contribution of UV and visible part of the sunlight to the electron transfer. In addition, this hybrid catalyst can be easily reused without loss of catalytic efficiency. This is the first report on a B-based photocatalyst co-sensitized by two photosensitizers with wide spectral response.
一种新型的杂化光催化剂，记为B-TiO-Ru(ii)，通过将硼衍生物和三联吡啶钌（Ru(bpy)）共固定在介孔锐钛矿TiO微球表面制备而成，并通过漫反射光谱（DRS）、X射线衍射（XRD）、扫描电子显微镜（SEM）和比表面积分析（BET）进行了表征。使用该杂化光催化剂，仅在可见光照射30分钟后，在三乙醇胺（TEOA）存在的情况下，滴滴涕（DDT）就被完全脱氯，并且还检测到了一小部分三脱氯产物。在模拟太阳光下，由于太阳光的紫外光和可见光部分对电子转移的贡献具有加和性，与相同条件下的B-TiO或其自身在可见光照射下相比，该杂化光催化剂表现出显著增强的光催化脱氯活性。此外，这种杂化催化剂可以很容易地重复使用而不会损失催化效率。这是关于由两种具有宽光谱响应的光敏剂共敏化的硼基光催化剂的首次报道。
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