Biopolymer starch mediated synthetic route of multi-spheres and donut ZnO structures

被引：44

作者：

Carp, Oana ^{[1
]}

Tirsoaga, Alina ^{[2
]}

Jurca, Bogdan ^{[2
]}

Ene, Ramona ^{[1
]}

Somacescu, Simona ^{[1
]}

Ianculescu, Adelina ^{[3
]}

机构：

[1] Romanian Acad, Ilie Murgulescu Inst Phys Chem, Bucharest 060021, Romania

[2] Univ Bucharest, Dept Phys Chem, Bucharest 030018, Romania

[3] Univ Politehn Bucuresti, Bucharest 011061, Romania

来源：

CARBOHYDRATE POLYMERS | 2015年 / 115卷

关键词：

Starch; ZnO; Multi spheres and donut structure; Optical properties; Visible-photocatalyst; GREEN CHEMICAL APPROACH; OPTICAL-PROPERTIES; PHOTOCATALYTIC DEGRADATION; ASSISTED SYNTHESIS; GROWTH; NANOSTRUCTURES; NANOPARTICLES; POLYSACCHARIDES; LUMINESCENCE; FABRICATION;

D O I：

10.1016/j.carbpol.2014.08.061

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A starch-assisted synthetic methodology of multispheres ZnO-starch biocomposites was developed. An additional thermal processing of the ZnO-starch composites induces the formation of ZnO with donutlike morphology. The synthesis of single-phase zinc oxide with a spherical morphology is conditioned by the presence of starch, which acts as template, stabilizing/capping agent. The synthesized structures present significant photocatalytic activities; a total phenol mineralization is attained with the donut-like ZnO photocatalyst under visible light irradiation, due to a cumulative effect of the its relatively large specific surface area, high crystallinity and favorable combination of defects for band narrowing, which together permit an enhanced utilization rate of the light. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：285 / 293

页数：9

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