Experimental study demonstrates photocurrent generation in 8-hydroxyquinoline titania gel films, indicating enhanced complex formation through zinc ion incorporation.
Abstract 8-Hydroxyquinoline (8-HQ)-dispersing titania gel films were prepared through a nitric acid-catalyzed sol–gel process and steam treatment. The complex was formed between the 8-HQ and the titania nanoparticle surface. A photocurrent was observed in electrodes containing the complex due to electron injection from the excited state of the complex into the titania conduction band. A larger amount of the complex was formed in titania electrodes containing zinc ions owing to its high electron affinity.
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Nishikiori et al. (2013) studied this question.
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