Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science; Utrecht University; Universiteitweg 99 3584 Utrecht The Netherlands
覆盖特征表明，使用NaBH 4可以选择性地从负载在二氧化钛上的金纳米颗粒中除去聚乙烯吡咯烷酮（PVP）稳定剂。B. Donoeva和P. E. de Jongh在其论文全文中证明，在由PVP稳定的Au胶体制备的催化剂中，PVP既吸附在金属纳米颗粒上，又吸附在TiO 2载体上。通过用NaBH 4处理，可以从负载的纳米颗粒上完全去除PVP，而在处理后，一些吸附在TiO 2上的PVP仍保留在氧化物表面上。残留在TiO 2上的PVP载体对金纳米颗粒的光学性能和催化性能没有影响。作者感谢Daniil Ovoshchnikov博士对封面图片的设计。
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Cover Feature: Colloidal Au Catalyst Preparation: Selective Removal of Polyvinylpyrrolidone from Active Au Sites (ChemCatChem 5/2018)
The Cover Feature shows that polyvinylpyrrolidone (PVP) stabilizer is selectively removed from gold nanoparticles supported on titania by using NaBH4. In their Full Paper, B. Donoeva and P. E. de Jongh demonstrate that PVP is adsorbed both on the metal nanoparticles and the TiO2 support in a catalyst prepared from PVP‐stabilized Au colloid. PVP can be completely removed from the supported nanoparticles by treating with NaBH4, whereas some PVP adsorbed on TiO2 remains on the oxide surface after treatment. The PVP remaining on the TiO2 support has no effect on the optical properties and catalytic performance of gold nanoparticles. The authors thank Dr. Daniil Ovoshchnikov for the design of the cover picture.
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