Polyol Synthesis of Size-Controlled Rh Nanoparticles and Their Application to Photocatalytic Overall Water Splitting under Visible Light
Polyol Synthesis of Size-Controlled Rh Nanoparticles and Their Application to Photocatalytic Overall Water Splitting under Visible Light
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DOI：
10.1021/jp305968u
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发表时间：
2013-02-14
影响因子：
3.7
通讯作者：
Teranishi, Toshiharu
中科院分区：
文献类型：
--
作者：
Ikeda, Takahiro;Xiong, Anke;Teranishi, Toshiharu
通过调节乙二醇（EG）溶液的pH值和反应温度，成功地将聚（n -乙烯基-2-吡咯烷酮）保护的Rh纳米颗粒（PVP-Rh NPs）的尺寸控制在1.7 ~ 7.7 nm范围内；在较高的pH和温度下形成较小的NPs。这种趋势可以通过调整溶液的pH值和/或温度引起的成核速率的变化来解释。将调整尺寸的PVP-Rh NPs用作光催化剂（GaN和ZnO固溶体（Ga1-xZnx）（N1-xOx））的助催化剂，在可见光下进行整体水分解，结果表明，较小的Rh核比较大的Rh核具有更高的活性。
A gradual size control of poly(N-vinyl-2-pyrrolidone)-protected Rh nanoparticles (PVP-Rh NPs) was successfully achieved in the range of 1.7-7.7 nm by tuning the pH value and the reaction temperature of the ethylene glycol (EG) solution; smaller NPs were formed at higher pH and at higher temperature. This trend can be interpreted by the change in the nucleation rate caused by tuning the pH value and/or the temperature of the solution. When the size tuned PVP-Rh NPs were applied for use as cocatalysts in a photocatalyst (solid solution of GaN and ZnO (Ga1-xZnx)(N1-xOx)) for overall water splitting under visible light, it was demonstrated that smaller Rh cores gave higher activity than the larger ones.