Improved thermal and photostability of an anthraquinone dye by intercalation in a zinc–aluminum layered double hydroxides host
Source abstract
Abstract
Abstract Intercalation of the dianion of the anthraquinone dye Acid Green 28 (1,4-bis[(4-butylbenzene-2-sulphonate)amino]-5,8-dihydroxyanthraquinone) (AG28 2− ) into a Zn 2 Al–layered double hydroxides (LDH) has been carried out by an anion-exchange method in an effort to improve its thermostability and photostability. The interlayer distance of the LDH was 1.918 nm after reaction with AG28 2− anions, confirming their intercalation into the interlayer galleries of the LDH host. Infrared spectroscopy and thermogravimetric analysis revealed the presence of host–guest interactions between LDH layers and AG28 2− anions. The thermostability of AG28 as its sodium salt and Zn 2 Al–AG28–LDH were compared by thermogravimetric–differential thermal analysis and UV–visible spectroscopy. It was found that the thermostability of AG28 was markedly improved by intercalation into the Zn 2 Al–LDH host, whilst the photostability was enhanced slightly. In their composites with polyethylene, it was also found Zn 2 Al–AG28–LDH possessed better thermostability and photostability than AG28 as its sodium salt.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Polyoxometalates: Synthesis and Applications · Mesoporous Materials and Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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