Photodeposition of Ag nanoparticles on mesoporous LaNaTaO3 nanocomposites for promotion H2 evolution
Source abstract
Abstract
Abstract Mesoporous Ag/La0.02Na0.98TaO3 photocatalysts at diverse contents of Ag nanoparticles (NPs) were synthesized through a photoreduction deposition approach. Photocatalytic H2 evolution from aqueous glycerol solutions as the holes scavenger over mesoporous La0.02Na0.98TaO3 was extremely enhanced by incorporating with Ag NPs as a cocatalyst. The mesoporous La0.02Na0.98TaO3 exhibited low the photocatalytic H2 evolution ∼ 80 μmolg−1. After incorporation of Ag NPs, the photocatalytic H2 evolution was increased from 400 to 2966 μmolg-1 with the increase Ag NPs contents from 0.5 to 1.5 %. The mesoporous 1.5 %Ag/La0.02Na0.98TaO3 photocatalyst exhibits the highest photocatalytic performance, which is greater 40 times than mesoporous pure La0.02Na0.98TaO3 photocatalyst. The improvement of the photocatalytic H2 evolution was ascribed to the efficient charge carriers transport from the Ag NPs to La0.02Na0.98TaO3, which inhibits the charge carriers recombination through the photocatalytic H2 evolution. The photoluminescence and photoelectrochemical were used to confirm the enhanced photocatalytic efficiency of Ag/La0.02Na0.98TaO3 photocatalysts.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Covalent Organic Framework Applications · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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