Abstract
A nitrogen doped carbon aerogel was used as a substrate for the atomic layer deposition of TiO2 and ZnO layers in various thicknesses.
Highlights
TiO2 and ZnO are widely researched photocatalysts to decompose organic pollutants in the environment, since they are chemically stable, non-toxic, and possess high reactivity
The presence of carbon may lead to a band gap narrowing effect in the semiconductor oxides, as it acts as a sensitizer to visible light, which is beneficial in applications utilizing solar radiation.[14,15]
Carbon aerogel composites with semiconductor oxides can be prepared by numerous methods, e.g. by incorporating a titania precursor during the sol–gel process of the aerogel synthesis, or depositing an oxide with atomic layer deposition (ALD) on carbon aerogels.[21,22]
Summary
TiO2 and ZnO are widely researched photocatalysts to decompose organic pollutants in the environment, since they are chemically stable, non-toxic, and possess high reactivity. Carbon aerogel composites with semiconductor oxides can be prepared by numerous methods, e.g. by incorporating a titania precursor during the sol–gel process of the aerogel synthesis, or depositing an oxide with atomic layer deposition (ALD) on carbon aerogels.[21,22] Among the various synthesis methods, ALD is unique as it allows the coating of the surface of nanostructures in a homogeneous way, and can be used for many substrates with different morphologies, e.g. nanospheres, nanotubes, fullerenes, nanofibers and nanoparticles .[23,24,25,26,27,28,29]
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