Amorphous/crystalline heterophase electrocatalysts: synthesis, applications and perspectives

Abstract

Phase engineering is arising as an effective strategy to regulate the properties, functions and applications of nanomaterials. In particular, amorphous/crystalline (a/c) heterophase nanostructures with enriched active sites, unsaturated coordination structures...

An ultra-thin 2D-CeO2 non-carbon support for significantly improving the methanol oxidation and oxygen reduction reactions

“…On the other hand, the amorphous phase suffers from the sluggish kinetics of electron transfer, which undermines the enhancement. 40–42 Therefore, 2D-CeO 2 with the amorphous and crystalline phases can be expected to combine their advantages and achieve high activity.…”

The synthesis and application of crystalline–amorphous hybrid materials

“…Apart from the aforementioned synthetic methods, some novel strategies have recently emerged, providing more options for CA-HM synthesis. For instance, magnetic-field-assisted method, 68 CO 2 -assisted method, 69 and ultrafast heating method (microwave thermal shock, laser ablation) 70 have demonstrated promising prospects for fabricating CA-HM with elaborate design.…”

Advancing Catalysts by Stacking Fault Defects for Enhanced Hydrogen Production: A Review

“…Defect sites can be effectively created during solidification or phase transformation under various atmosphere conditions using calcination and annealing techniques effectively generates. [34] For example, the controlled adjustment of SF density in Li 2 MnO 3 perovskite was achieved through the calcination of MnO and an excess of 5% Li 2 CO 3 at 900 °C for 15 h in an oxygen-nitrogen mixture at different oxygen contents (20%, 40%, 60%, 80%, and 100%). [24b] This process resulted in the creation of distinct types of SFs, as illustrated in Figure 5a-c.…”