Incorporation of Metal Phosphide Domains into Colloidal Hybrid Nanoparticles
Incorporation of Metal Phosphide Domains into Colloidal Hybrid Nanoparticles
复制标题
将金属磷化物域掺入胶体杂化纳米颗粒中
DOI：
10.1021/acs.inorgchem.0c03826
复制
发表时间：
2021
影响因子：
4.6
通讯作者：
Schaak, Raymond E.
中科院分区：
文献类型：
--
作者：
Hernández-Pagán, Emil A.;Lord, Robert W.;Veglak, Joseph M.;Schaak, Raymond E.
胶体杂化纳米颗粒在无机纳米材料界引起了广泛的关注。不同材料在单个纳米颗粒内的组合可以产生协同特性，从而实现新特性、新应用和新现象的发现。因此，合成金属-金属、金属硫族化物、金属氧化物和氧化物-硫族化物结构域的杂化纳米粒子的方法在文献中得到了广泛的报道。然而，含有金属磷化结构域的胶体杂化纳米颗粒是罕见的，尽管它们具有潜在独特的催化、光催化和光电子特性。在这篇论坛文章中，我们报道了一种利用非均相种子生长反应将金属磷化物Ni2P和coxpy与Au、Ag、PbS和CdS偶联的胶体杂化纳米颗粒的合成研究。我们还研究了Au-Ni异二聚体向Au-Ni2P的转化，其中预成型金属-金属杂化纳米颗粒的磷化为金属磷化体系提供了另一种途径。我们还研究了针对特定金属磷化物的顺序阳离子交换反应，即Ni2P-PbS转化为Ni2P-Ag2S，然后转化为Ni2P-CdS。在所有这些途径中，随附的讨论强调了合成的基本原理，以及合成和表征这些系统所特有的挑战。特别是，围绕磷化结构域的氧化壳的观察对这些杂化纳米颗粒的潜在光催化应用具有重要意义。
Colloidal hybrid nanoparticles have generated considerable attention in the inorganic nanomaterials community. The combination of different materials within a single nanoparticle can lead to synergistic properties that can enable new properties, new applications, and the discovery of new phenomena. As such, methodologies for the synthesis of hybrid nanoparticles that integrate metal–metal, metal chalcogenide, metal oxide, and oxide–chalcogenide domains have been extensively reported in the literature. However, colloidal hybrid nanoparticles containing metal phosphide domains are rare, despite being attractive systems for their potentially unique catalytic, photocatalytic, and optoelectronic properties. In this Forum Article, we report a study of the synthesis of colloidal hybrid nanoparticles that couple the metal phosphides Ni2P and CoxPywith Au, Ag, PbS, and CdS using heterogeneous seeded-growth reactions. We also investigate the transformation of Au–Ni heterodimers to Au–Ni2P, where phosphidation of preformed metal–metal hybrid nanoparticles offers an alternative route to metal phosphide systems. We also study sequential cation-exchange reactions to target specific metal phosphide hybrids, i.e., the transformation of Ni2P–PbS into Ni2P–Ag2S and then Ni2P–CdS. Throughout all of these pathways, the accompanying discussion emphasizes the synthetic rationale, as well as the challenges in synthesis and characterization that are unique to these systems. In particular, the observation of oxide shells that surround the phosphide domains has implications for the potential photocatalytic applications of these hybrid nanoparticles.