Facet-dependent and interfacial plane-related photocatalytic behaviors of semiconductor nanocrystals and heterostructures

Well-defined Cu2O photocatalysts for solar fuels and chemicals

“…Morphology-controlled nanocrystals can be synthesised by different wet chemical synthetic procedures. 19 These chemical reactions oen appear to be fairly simple, but the exact growth mechanisms inside the glass bottles are extremely complicated. The morphology of the nal nanocrystals highly depends on the precise control of temperature, capping agents, different reagent concentrations and also on the sequence of the addition of reagents.…”

“…[15][16][17][18] The opportunity to control the morphology and size of nanocrystals will benet the light absorbing properties and charge carrier management, thus enhancing the photocatalytic activity and product selectivity in the end. 19 Moreover, different crystal facets possess different atomic arrangements, which may directly control their physical and Alberto Naldoni is deputy head of the photoelectrochemistry group at the Regional Centre of Advanced Technologies and Materials of Palacký University Olomouc. He obtained his PhD (2010) in chemical sciences from the University of Milan before moving to the Italian National Research Council to study photocatalysis and photoelectrochemical water splitting.…”

Hollow Au Nanosphere-Cu2O Core–Shell Nanostructures with Controllable Core Surface Morphology

“…TEM and SEM images for the Au particles are shown in Figure 1 have been shown to be highly dependent upon geometry and facet expression. 15 Since the core-shell interfacial area is greatly increased in the case of bHGN- . 16 The absorption feature ranging from 300-700 nm is attributed to the bandgap of the Cu 2 O shell, 17 which corresponds well with the absorption feature of pure Cu 2 O.…”

First principle investigation of the exposed surfaces and morphology of β-ZnMoO4

“…[1][2][3][4][5][6] Investigating facets is an interdisciplinary research field in which significant efforts have been devoted in recent years to understand the growth and processing of advanced crystalline materials to successfully realize their functional applications. [7][8][9][10][11][12][13][14] Studying surface properties and morphologydependent properties can help to better control and achieve the functionality of specific material surfaces. To this end, it is mandatory to study their exposed surfaces and to know how the atoms located on the exposed surfaces of a crystal are coordinated to their nearest neighbors and, thus, the landscape of the surface electronic structure.…”

“…8,15,16 In general, the properties and functions of any crystal are highly dependent on its surface composition, geometry, morphology and electronic structures, and the morphology results from the relative stability of the exposed surfaces. The equilibrium morphology of a crystal and its evolution can be predicted by the classical Wulff construction, and its generalizations have been well-recognized procedures for a long time [17][18][19][20][21][22] to obtain the morphology of materials [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] and require surface energies to be known. 23,24 It is important to remark that, despite its importance, experimentally measuring or calculating surface energies of a crystal is generally a difficult task even for simple cases, because the exposed surfaces are in very diverse environments, and different parameters such as temperature, pH, surfactants, or other adsorbates on the crystal surface can modify the surface energy.…”