Urea photosynthesis inside polyelectrolyte capsules:: Effect of confined media

被引：30

作者：

Shchukin, DG ^{[1
]}

Möhwald, H ^{[1
]}

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

来源：

LANGMUIR | 2005年 / 21卷 / 12期

关键词：

D O I：

10.1021/la050429+

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The influence of the restricted volume of poly(styrene sulfonate)/poly(allylamine hydrochloride) capsules of different size (2.2, 4.2, and 8.1 mu m) on the TiO2-assisted photosynthesis of urea from inorganic precursors (CO2 and NO3-) in aqueous solution was demonstrated. Poly(vinyl alcohol) was employed as electron donor to facilitate the photosynthetic process. Decreasing the size of the confined microvolume of polyelectrolyte capsules accelerates the NO3- photoreduction, which is a limiting stage of the urea photosynthesis and, correspondingly, increases the efficiency of urea production. The highest yield of urea photosynthesis (37 %) was achieved for Cu-modified TiO2 nanoparticles encapsulated inside 2.2 mu m poly(styrene sulfonate)/ poly(allylamine hydrochloride) capsules.

引用

页码：5582 / 5587

页数：6

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