Facile Synthesis of Rambutan‐Like ZnO Hierarchical Hollow Microspheres with Highly Photocatalytic Activity

Abstract

Rambutan-like ZnO hierarchical hollow microspheres (ZnO HHMs) were constructed under hydrothermal conditions, using carboxyl methyl starch (CMS) as a soft template. The resulting products were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The experimental parameters and growth mechanism of rambutan-like ZnO HHMs were discussed in some detail. The as-prepared samples displayed improved photocatalytic activity for the degradation of rhodamine B under ultraviolet (UV) irradiation.

Phosphate enhance recovery from wastewater by mechanism analysis and optimization of struvite settleability in fluidized bed reactor

“…This might have occurred because at higher temperatures the clusters adsorbed onto the crystal surface were more active, causing a higher surface-integration rate, which was significantly stronger than the solid-liquid mass transfer effect so that crystals had a tendency to increase. The Ostwald ripening mechanism also pointed out that a higher temperature could dissolve micro crystals, promote secondary nucleation of larger crystal nuclei, and as a result, increase the particle size of crystals 35 . In short, variations in reaction temperature had a bidirectional effect on the growth of struvite crystals, with a negative effect caused by the decrease of SI, and a positive effect caused by the increase of surface activity of crystals.…”

Progress in the application of sustained-release drug microspheres in tissue engineering

“…Ju et al. prepared rambutan-like zinc oxide layered hollow microspheres using hydroxymethyl starch as a soft template [ 59 ]. The hard template method, also known as nano-casting [ 60 , 61 ], takes inorganic materials as templates, and the materials used for the template are mainly silicon dioxide, metal oxide, or a metal oxide skeleton.…”