Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7721685 | International Journal of Hydrogen Energy | 2013 | 7 Pages |
Abstract
Fluorescent silver nanoclusters with a size of about 2Â nm were synthesized within 90Â s by irradiating a mixture of silver precursor and polymethacrylic acid sodium salt solution under Xe lamp. The proposed method was well optimized by a systematical investigation of experimental parameters, such as irradiation time, initial concentration, pH of the solution. The obtained nanoclusters were well dispersed in water and exhibited bright emission upon visible light excitation. This approach can be further extended to use solar light for the large scale synthesis. Strikingly, the emission intensity of as-prepared silver nanoclusters could be enhanced up to â¼60% by the addition of 1-(2â²-hydroxylethyl)-3-methylimidazolium tetrafluoroborate ([HOEtMIm][BF4]) ionic liquid. Meanwhile, these nanoclusters, in between molecules and normal nanoparticles, intensely absorb light around 510Â nm covering the most intense part of solar light, should be a promising visible light sensitizer in solar cell and water splitting applications.
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Authors
Feng Lu, Shiwei Zhou, Jun-Jie Zhu,