Differently Shaped Au Nanoparticles: A Case Study on the Enhancement of the Photocatalytic Activity of Commercial TiO2

被引：14

作者：

Pap, Zsolt ^{[1
,2
,3
]}

Toth, Zsejke Reka ^{[1
]}

Danciu, Virginia ^{[1
]}

Baia, Lucian ^{[2
,4
]}

Kovacs, Gabor ^{[1
,2
,5
]}

机构：

[1] Univ Babes Bolyai, Fac Chem & Chem Engn, RO-400028 Cluj Napoca, Romania

[2] Univ Babes Bolyai, Fac Phys, RO-400084 Cluj Napoca, Romania

[3] Univ Szeged, Inst Chem, Res Grp Environm Chem, H-6720 Szeged, Hungary

[4] Univ Babes Bolyai, Inst Interdisciplinary Res Bionanosci, RO-400084 Cluj Napoca, Romania

[5] Univ Szeged, Fac Sci & Informat, Dept Appl & Environm Chem, H-6720 Szeged, Hungary

来源：

MATERIALS | 2015年 / 8卷 / 01期

关键词：

titanium-dioxide; gold nanoparticles; shape-control; photocatalysis; hydrogen production; GOLD NANOPARTICLES; DEGRADATION; PERFORMANCE; COMPOSITES; MORPHOLOGY; NANOWIRES; NANORODS; BEHAVIOR; GROWTH; ENERGY;

D O I：

10.3390/ma8010162

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present work, the influence of a gold nanoparticle's shape was investigated on the commercially available Evonik Aeroxide P25. By the variation of specific synthesis parameters, three differently shaped Au nanoparticles were synthetized and deposited on the surface of the chosen commercial titania. The nanoparticles and their composites' morphological and structural details were evaluated, applying different techniques such as Diffuse Reflectance Spectroscopy (DRS), X-ray Diffraction (XRD), and Transmission Electron Microscopy (TEM). The influence of the Au nanoparticles' shape was discussed by evaluating their photocatalytic efficiency on phenol and oxalic acid degradation and by investigating the H-2 production efficacy of the selected composites. Major differences in their photocatalytic performance depending on the shape of the deposited noble metal were evidenced.

引用

页码：162 / 180

页数：19

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