Photocatalytic activity of Ag/ZnO heterostructure nanocatalyst: Correlation between structure and property
Artikel i vetenskaplig tidskrift, 2008

Ag/ZnO heterostructure nanocatalysts with Ag content of 1 wt % are successfully prepared through three different simple methods, where chemical reduction and photolysis reaction are adopted to fabricate the heterostructure. The dispersity of Ag clusters and/or nanoparticles in Ag/ZnO nanocatalyst is investigated by EDX mapping and XPS techniques. The experimental results show that deposition-precipitation is an efficient method to synthesize Ag/ZnO nanocatalyst with highly dispersed Ag clusters and/or nanoparticles; the photocatalytic activity of Ag/ZnO photocatalysts mainly depends on the dispersity of metallic Ag in Ag/ZnO nanocatalyst; the higher the dispersity of metallic Ag in Ag/ZnO nanocatalyst is, the higher the photocatalytic activity of Ag/ZnO photocatalyst should be. In addition, it is also found that the dispersity of Ag/ZnO photocatalyst in the dye solution is another key factor for liquid-phase photocatalysis due to the UV-light utilizing efficiency. The higher the UV-light utilizing efficiency is, the higher the photocatalytic activity of Ag/ZnO heterostructure photocatalyst should be.

WGS REACTION

COMPOSITES

DISPERSION

OXIDATION

NANOPARTICLES

REDUCTION

PERFORMANCE

NANOCRYSTALS

CLUSTERS

CATALYTIC-ACTIVITY

Författare

Y. H. Zheng

Fuzhou University

C. Q. Chen

Fuzhou University

Y. Y. Zhan

Fuzhou University

X. Y. Lin

Fuzhou University

Q. Zheng

Fuzhou University

K. M. Wei

Fuzhou University

Jiefang Zhu

Chalmers, Teknisk fysik, Kemisk fysik

Journal of Physical Chemistry C

1932-7447 (ISSN) 1932-7455 (eISSN)

Vol. 112 10773-10777

Ämneskategorier

Annan teknik

DOI

10.1021/jp8027275