Supercritical CO2 drying of alginate/zinc hydrogels: a green and facile route to prepare ZnO foam structures and ZnO nanoparticles

被引：12

作者：

Abou Oualid, Hicham ^{[1
,2
]}

Amadine, Othmane ^{[2
]}

Essamlali, Younes ^{[2
]}

Danoun, Karim ^{[2
]}

Zahouily, Mohamed ^{[1
,2
]}

机构：

[1] Univ Hassan 2, Fac Sci & Tech, Lab Mat Catalyse & Valorisat Ressources Nat, URAC 24, Casablanca BP 146, Casablanca 20650, Morocco

[2] MAScIR Fdn, Rabat Design, VARENA Ctr, Rue Mohamed El Jazouli, Rabat 10100, Morocco

来源：

RSC ADVANCES | 2018年 / 8卷 / 37期

关键词：

CHEMICAL-VAPOR-DEPOSITION; QUANTUM DOTS; ULTRAVIOLET PHOTODETECTORS; MULTIFUNCTIONAL PROPERTIES; ANTIBACTERIAL ACTIVITY; THERMAL-DECOMPOSITION; CARBONACEOUS SPHERES; DOPED ZNO; TEMPERATURE; FILMS;

D O I：

10.1039/c8ra02129e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present study, we investigate a simple and effective synthetic protocol to produce zinc oxide foams by a facile solution-based method using alginate gelation. The influences of the zinc concentration and the drying process on the structural, textural and morphological properties of the synthesized ZnO nanomaterial were studied and discussed. The components of these nanomaterials were characterized by several techniques to demonstrate the effectiveness of the adopted synthetic route in controlling the growth of the ZnO nanoparticles. XRD analysis revealed that the as-prepared ZnO nanomaterial crystallizes in the hexagonal wurtzite structure. The room temperature photoluminescence (PL) spectra of ZnO show ultra-violet (UV) and visible emissions. SEM analysis revealed the porous texture of the prepared zinc oxide. TEM analysis confirmed the nano dimensions of the synthesized zinc oxide nanoparticles. A comparative study of conventional air drying versus supercritical drying was conducted to determine the influence of each mode of drying on the structural, textural and morphological as well as optical properties of the synthesized ZnO nanoparticles.

引用

页码：20737 / 20747

页数：11

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