Varandili Seyedeh Behnaz, Stoian Dragos, Vavra Jan, Pankhurst James, Buonsanti Raffaella
Laboratory of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne CH-1950 Sion Switzerland
Chem Sci. 2020 Oct 27;11(48):13094-13101. doi: 10.1039/d0sc04739b.
Combining domains of different chemical nature within the same hybrid material through the formation of heterojunctions provides the opportunity to exploit the properties of each individual component within the same nano-object; furthermore, new synergistic properties will often arise as a result of unique interface interactions. However, synthetic strategies enabling precise control over the final architecture of multicomponent objects still remain scarce for certain classes of materials. Herein, we report on the formation of Cu/MO (M = Ce, Zn and Zr) hybrid nanocrystals with a tunable number of interfaces between the two domains. We demonstrate that the organic ligands employed during the synthesis play a key role in regulating the final configuration. Finally, we show that the synthesized nanocrystals serve as materials platforms to investigate the impact of the Cu/metal oxide interfaces in applications by focusing on the electrochemical CO reduction reaction as one representative example.
通过形成异质结在同一杂化材料中结合不同化学性质的域，为在同一纳米物体中利用每个单独组分的性质提供了机会；此外，由于独特的界面相互作用，常常会产生新的协同性质。然而，对于某些类别的材料，能够精确控制多组分物体最终结构的合成策略仍然很少。在此，我们报道了具有两个域之间可调数量界面的Cu/MO（M = Ce、Zn和Zr）杂化纳米晶体的形成。我们证明了合成过程中使用的有机配体在调节最终构型方面起着关键作用。最后，我们表明，通过将电化学CO还原反应作为一个代表性例子，合成的纳米晶体可作为材料平台来研究Cu/金属氧化物界面在应用中的影响。
