Stabilizing ultrasmall Au clusters for enhanced photoredox catalysis.
Stabilizing ultrasmall Au clusters for enhanced photoredox catalysis.
复制标题
稳定超小金簇以增强光氧化还原催化作用
DOI:
10.1038/s41467-018-04020-2
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发表时间:
2018-04-18
影响因子:
16.6
通讯作者:
Xu YJ
中科院分区:
文献类型:
--
作者:
Weng B;Lu KQ;Tang Z;Chen HM;Xu YJ
Recently, loading ligand-protected gold (Au) clusters as visible light photosensitizers onto various supports for photoredox catalysis has attracted considerable attention. However, the efficient control of long-term photostability of Au clusters on the metal-support interface remains challenging. Herein, we report a simple and efficient method for enhancing the photostability of glutathione-protected Au clusters (Au GSH clusters) loaded on the surface of SiO2sphere by utilizing multifunctional branched poly-ethylenimine (BPEI) as a surface charge modifying, reducing and stabilizing agent. The sequential coating of thickness controlled TiO2shells can further significantly improve the photocatalytic efficiency, while such structurally designed core-shell SiO2-Au GSH clusters-BPEI@TiO2composites maintain high photostability during longtime light illumination conditions. This joint strategy via interfacial modification and composition engineering provides a facile guideline for stabilizing ultrasmall Au clusters and rational design of Au clusters-based composites with improved activity toward targeting applications in photoredox catalysis.
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