pH-Abhängigkeit der photochemischen Chlor- und Sauerstoffentwicklung in einer wässrigen chloridhaltigen Silberzeolith-Dispersion
Below pH 4 aqueous Ag⊕-zeolite dispersions produce Cl2 in the presence of Cl⊖ with high quantum yield when irradiated at λ = 370 nm. On changing from acid to alkaline conditions a change from chlorine to oxygen production is observed. Both processes can be sensitized over the whole visible spectrum...
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| Main Authors: | , |
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| Format: | Article |
| Language: | deu |
| Published: |
Swiss Chemical Society
1986-12-01
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| Series: | CHIMIA |
| Online Access: | https://www.chimia.ch/chimia/article/view/9762 |
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| Summary: | Below pH 4 aqueous Ag⊕-zeolite dispersions produce Cl2 in the presence of Cl⊖ with high quantum yield when irradiated at λ = 370 nm. On changing from acid to alkaline conditions a change from chlorine to oxygen production is observed. Both processes can be sensitized over the whole visible spectrum by means of self-sensitization. Self-sensitization means that systems which are first insensitive to light of a certain wavelength become photoactive after they have been irradiated with light of higher energy. The pH-dependence of the photochemical oxygen and chlorine evolution from an aqueous silver zeolite dispersion in presence of Cl⊖ is reported.
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| ISSN: | 0009-4293 2673-2424 |