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Materials Data on Cu(HgN)2 by Materials Project

Cu(HgN)2 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Cu2+ is bonded in a square co-planar geometry to four N3- atoms. There are two shorter (2.09 Å) and two longer (2.10 Å) Cu–N bond lengths. Hg2+ is bonded in a linear geometry to two N3- atoms. There are one shorter (2.23 Å) and one longer (2.24 Å) Hg–N bond lengths. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a square co-planar geometry to two equivalent Cu2+ and two equivalent Hg2+ atoms. In the second N3- site, N3- is bonded in a square co-planar geometry to two equivalent Cu2+ and two equivalent Hg2+ atoms.

36 MATERIALS SCIENCE↗

Hollow Au Nanosphere-Cu 2 O Core–Shell Nanostructures with Controllable Core Surface Morphology

Design of metal-semiconductor interfaces and heterostructures is of strong interest for various catalytic applications including photocatalysis. Here, a series of hollow Au nanosphere (HGN)-Cu 2 O core-shell nanostructures with varying core surface rugosities are synthesized and investigated for possible photocatalytic applications. HGN surface rugosity is tuned by pH modification during galvanic exchange, and carboxyl groups are utilized as coordination sites to deposit uniform Cu 2 O shells onto the gold surfaces. Final core-shell structures are verified by transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), and X-ray diffraction (XRD). Information regarding chemical state and electronic band structure is acquired by X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS). Ultrafast transient absorption (TA) reveals that charge separation in bumpy HGN (bHGN)-Cu 2 O may effectively provide longer-lived photoexcited carriers, offering great potential for utilization in advanced photocatalytic processes.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗