Shape-Controlled Synthesis of Pt Nanopeanuts.
Shape-Controlled Synthesis of Pt Nanopeanuts.
复制标题
Pt 纳米花生的形状控制合成
DOI：
10.1038/srep31404
复制
发表时间：
2016-08-16
影响因子：
4.6
通讯作者：
Wen W
中科院分区：
文献类型：
--
作者：
Zhang X;Xia Z;Huang Y;Jia Y;Sun X;Li Y;Li X;Wu R;Liu A;Qi X;Wang S;Wen W
探索新颖的Pt纳米粒子形状是提高燃料电池中Pt电催化性能的重要途径之一。在这项工作中，Pt纳米球组成的两个纳米球一起生长已经通过两步多元醇方法制造。高分辨率扫描电子显微镜（SEM）图像和能量色散X射线（EDX）光谱在相邻部分收集指出，铂纳米球是明显不同于两个物理附着的纳米球。为了了解这种纳米花生的生长机理，研究了不同合成条件下的最终产物。结果表明，Pt纳米粒子的有趣形态主要得益于化学试剂（FeCl3），而尺寸和均匀性受温度的影响很大。此外，Pt纳米粒的电催化活性也在这里得到了证实。我们的两步合成Pt纳米颗粒不仅扩大了Pt纳米颗粒的种类，而且为新型金属纳米颗粒的合成提供了有益的策略。
Exploring the novel shape of Pt nanoparticles is one of the most useful ways to improve the electrocatalytic performance of Pt in fuel cells. In this work, the Pt nanopeanuts consisting of two nanospheres grown together have been fabricated through a two-step polyol method. The high resolution scanning electron microscope (SEM) images and energy dispersive x-ray (EDX) spectrum collected at adjacent part point out the Pt nanopeanut is apparently different from the two physical attached nanospheres. To understand the growth mechanism of this nanopeanut, the final products in different synthesis situations are studied. The results indicate the interesting morphology of Pt nanopeanuts mainly benefit from the chemical reagent (FeCl3) while the size and homogeneity are greatly affected by the temperature. Furthermore, the electrocatalytic activity of the Pt nanopeanuts has also been demonstrated here. Our two-step synthesis of Pt nanopeanuts not only enlarges the group of Pt nanoparticles, but also provides a beneficial strategy for the synthesis of novel metal nanoparticles.