Preparation and characterization of CuS hollow spheres

Synthesis and Biomedical Applications of Copper Sulfide Nanoparticles: From Sensors to Theranostics

“…Hard‐template assisted technique has also been used to synthesize CuS with a large hollow cavity (Figure b) . For this method, several different types of core supports have been used, including surfactant micelle microemulsions, Cu 2 O nanoparticles, and poly‐(styrene‐acrylic) latex particles . Cubic‐ and star‐shaped, as well as octahedral nanoparticles, have been used as sacrificial templates to produce hollow CuS structures by solid‐liquid reactions, with sizes ranging from 500 nm to several microns .…”

“…For example, the diameters range from 30 to 80 nm for CuS nanowires and 30 to 120 nm for CuS nanotubes, depending on the method of synthesis, conditions of growth, and the precursors used. Most of the procedures include hydrothermal processes and their variations, which can provide an easy and efficient way to produce good quality, uniform nanostructures with high aspect ratios (Figure d) . Meanwhile, thermolytic degradation of copper thiolate precursor without solvent, the use of a paired cell at room temperature, and amylose‐directed synthesis, have also been investigated for the preparation of these CuS nanostructures.…”

“…Their increasing importance in the detection and treatment of cancer and other diseases, drug delivery, and in vitro biosensing applications can be partly attributed to their favorable and easily tunable physical, chemical, magnetic, and/or optical properties . Copper sulfide (CuS), a p type semiconductor with excellent optical and electrical properties, has been extensively studied for various applications . However, reports on its biological applications had remained largely elusive until the last several years.…”

Synthesis of millimeter-scale Al2O3 ceramic hollow spheres by an improved emulsion microencapsulation method

“…Xu et al [10] have successfully fabricated hollow glass-ceramics microspheres (HGCM) with the diameter from 10 μm to 60 μm and the shell thickness less than 2 μm by using polyacrylamide microspheres (PAM) as template. Huang et al [11] prepared CuS hollow spheres with 20 nm in wall thickness, and 150 nm in diameter using styrene-acrylic acid copolymer (PSA) latex particles as template. Yang et al [12] have fabricated ZnO hollow spheres with 1-3 μm in diameter and 70-140 nm in wall thickness by templates of surfactant spheres in mercury-media.…”

“…Thus, it is top priority to prepare ICF applied millimeterscale ceramic hollow sphere. So far, methods to prepare hollow spheres include spray drying method [8], sol-gel process [9], template method [10][11][12], hydrothermal method [13], solvothermal method [14] and so on. Sun et al [8] have synthesized hydroxyapatite hollow spheres with an average diameter about 5 μm by spray drying method.…”