Room-temperature synthesis of (Ag,Cu)<inf>2</inf>S hollow spheres by cation exchange and their optical properties

Release time:2021-03-15 Hits:

Key Words:Sulfur compounds;Copper compounds - Crystal growth - High resolution transmission electron microscopy - Microspheres - Nanoparticles - Nanostructures - Optical properties - Scanning electron microscopy - Silver compounds - Spheres - Synthesis (chemical) - Transmission electron microscopy - X ray diffraction - X ray photoelectron spectroscopy;Cation exchanges - Hollow microsphere - Hollow sphere - Infrared regions - Room temperature synthesis - Selective absorption - Spherical aggregates - Transmission electron

Abstract:Hollow (Ag,Cu)<inf>2</inf>S microspheres were prepared with spherical aggregates of CuS nanoparticles as templates at room temperature. The products were characterized using transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The result showed that when the molar ratio of CuS to Ag⁺was 2:1, the obtained product was hollow microspheres with diameter of 700 nm to 1 &mu;m. The shell of the hollow spheres was composed of (Ag,Cu)<inf>2</inf>S nanoparticles. The absorption of hollow (Ag,Cu)<inf>2</inf>S spheres was strong in ultraviolet and infrared region but weak in visible region. It will be valuable optical materials for selective absorption or transmission. &copy; 2011 Elsevier B.V. All rights reserved.<br/>

Volume:127

Issue:1-2

Translation or Not:no