Photocatalytic Nanostructured Self-Assembled Poly(allylamine hydrochloride)/Poly(acrylic acid) Polyelectrolyte Films Containing Titanium Dioxide Gold Nanoparticles for Hydrogen Generation

被引：24

作者：

Dal'Acqua, Nicolle ^{[1
]}

Scheffer, Francine Ramos ^{[2
]}

Boniatti, Rosiana ^{[1
]}

Mendonca da Silva, Barbara Virginia ^{[3
]}

de Melo, Janaina Viana ^{[3
]}

Crespo, Janaina da Silva ^{[1
]}

Giovanela, Marcelo ^{[1
]}

Pereira, Marcelo Barbalho ^{[2
]}

Weibel, Daniel Eduardo ^{[2
]}

Machado, Giovanna ^{[3
]}

机构：

[1] UCS, Caxias Do Sul, RS, Brazil

[2] Univ Fed Rio Grande do Sul, Porto Alegre, RS, Brazil

[3] Ctr Tecnol Estrateg Nordeste CETENE, Recife, PE, Brazil

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2013年 / 117卷 / 44期

关键词：

SENSITIZED SOLAR-CELLS; TIO2; NANOPARTICLES; ENERGY-TRANSFER; VISIBLE-LIGHT; PERFORMANCE; ADSORPTION; PHOTORESPONSE; FABRICATION; NANOTUBE; LAYERS;

D O I：

10.1021/jp404429r

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 this study, we developed a facile layer-by-layer (LbL) method of incorporating gold (Au) and titanium dioxide (TiO2) nanoparticles (NPs) into self-assembled photocatalytic films (SAPFs). The resulting SAPFs were then systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), UV-vis spectrophotometry, profilometry, and atomic force microscopy (AFM). The results revealed that the SAPFs incorporated TiO2 and Au NPs with sizes of 21.2 +/- 0.30 and 12.5 +/- 0.05 nm, respectively. Moreover, the SAPFs with 40, 60, 80, and 100 layers exhibited thicknesses of 410, 472, 917, and 945 nm, respectively. The hydrogen produced by the SAPFs increased with increasing UV irradiation time in a linear relationship. Hydrogen was also produced within the bulk of the polymer/TiO2-Au NP assemblies because water hydrates the network, allowing for facile hydrogen production in the bulk under irradiation. The present approach represents a significant advance over traditional nanostructured catalysts, for which the highest possible surface area is desired to maximize photocatalytic activity.

引用

页码：23235 / 23243

页数：9

共 63 条

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