Tunable Photocatalytic Activity of PEO-Stabilized ZnO-Polyoxometalate Nanostructures in Aqueous Solution

被引：13

作者：

Bernhardt, Sarah ^{[1
,2
,3
]}

Duering, Jasmin ^{[1
,2
,3
]}

Haschke, Sandra ^{[4
]}

Barr, Maissa K. S. ^{[4
]}

Stiegler, Lisa ^{[5
]}

Schuehle, Patrick ^{[6
]}

Bachmann, Julien ^{[4
,7
]}

Hirsch, Andreas ^{[5
]}

Groehn, Franziska ^{[1
,2
,3
]}

机构：

[1] Friedrich Alexander Univ Erlangen Nurnberg, Dept Chem & Pharm, Egerlandstr 3, D-91058 Erlangen, Germany

[2] Friedrich Alexander Univ Erlangen Nurnberg, Interdisciplinary Ctr Mol Mat, Egerlandstr 3, D-91058 Erlangen, Germany

[3] Friedrich Alexander Univ Erlangen Nurnberg, Bavarian Polymer Inst BPI, Egerlandstr 3, D-91058 Erlangen, Germany

[4] Friedrich Alexander Univ Erlangen Nurnberg, Chem Thin Film Mat, IZNF, Cauerstr 3, D-91058 Erlangen, Germany

[5] Friedrich Alexander Univ Erlangen Nurnberg, Organ Chem, Nikolaus Fiebiger Str 10, D-91058 Erlangen, Germany

[6] Friedrich Alexander Univ Erlangen Nurnberg, Inst Chem React Engn, Egerlandstr 3, D-91058 Erlangen, Germany

[7] St Petersburg State Univ, Inst Chem, Univ Skii Pr 26, St Petersburg 198504, Russia

来源：

ADVANCED MATERIALS INTERFACES | 2021年 / 8卷 / 14期

关键词：

organic-inorganic hybrid materials; photocatalysis; polyoxometalate; solar energy conversion; zinc oxide nanoparticles; ZINC-OXIDE; METHYL-ORANGE; METAL NANOPARTICLES; FACILE SYNTHESIS; ONE-STEP; DEGRADATION; SURFACE; FABRICATION; NANOCRYSTALS; H4SIW12O40;

D O I：

10.1002/admi.202002130

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photocatalytic activity and selectivity of novel binary and ternary composite nanostructures from polyethylene oxide-stabilized zinc oxide (PEO-ZnO) with and without polyoxometalate (H4Si(W3O10)(4)], POM) are determined in aqueous solution under UV-light. Mono- and di-COOH-end-functionalized PEO polymers are used as surface modifiers, influencing the morphology and stability of the ZnO nanoparticles being synthesized in water. POM acts as an additional versatile photocatalytically active building block resulting in a ternary hybrid structure with tunable photocatalytic activity. Catalytic selectivity is demonstrated by studying photocatalytic dye degradations as model reactions, where the chemical backbone of the dyes and their charge turn out to be the basis for the selectivity. All samples are characterized with dynamic light scattering, transmission electron microscopy, scanning electron microscopy, light microscopy, and zeta-potential measurements. With the functionalized PEOs, large ZnO clusters consisting of leaves are formed while 2-[2-(2-methoxyethoxy) ethoxy] acetic acid (TODA) yields ZnO flower-like structures.

引用

页数：15

共 71 条

[1] XPS and optical studies of different morphologies of ZnO nanostructures prepared by microwave methods [J].