Journal
CHEMCATCHEM
Volume 6, Issue 2, Pages 611-617Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201300804
Keywords
nanostructures; photocatalysis; oxidation; silver; water splitting
Categories
Funding
- National Basic Research Program of China (973 Program) [2013CB632401]
- Program for Taishan Scholars
- Out-standing Young Scientists Foundation Grant of Shandong Province [BS2012L006]
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Ag/AgCl necklace-like nano-heterostructures with an average diameter of 55 nm were prepared by a facile in situ oxidation process. As a result of the presence of multiple crystalline Ag nanowires with lots of grain boundaries, uniform Ag/AgCl necklace-like heterostructures can be successfully obtained in the presence of polyvinylpyrrolidone (PVP). Ag and AgCl are evenly distributed in the necklace-like structures, which were divided into a number of tiny units that consisted of Ag and AgCl and enabled easy electron transfer. In contrast, a loose Ag/AgCl structure with large particles was prepared without the addition of PVP. A formation mechanism of the Ag/AgCl nano-heterostructures was proposed. Furthermore, the molar ratio of Ag and AgCl plays an important role in the photocatalytic activity of the nano-heterostructures, which can be tuned simply. The results of photocatalytic investigations demonstrate that the Ag/AgCl heterostructures with an 85% AgCl component have an excellent activity for the decomposition of organic pollutants and water splitting to produce oxygen.
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