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Indoor solar-light-driven heterogeneous photocatalysis enabled by a Fresnel-lens/fiber-optic sunlight delivery system: CuOx/graphene-oxide decorated silicon nanowires for aqueous emerging pollutant degradation
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DOI：10.1016/j.cattod.2026.115872.png)
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Abstract
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• Fresnel–fiber system delivers real sunlight indoors for photocatalysis. • SiNW heterostructures (CuOx, GO) stay active despite UV reduction (≈6.2% – ≈0.6%). • 3 h MO removal: ≈86–87% (direct; best SiNWs–CuOx) vs. ≈64–65% (guided; best SiNWs–GO). • Site-specific solar assessment and ERA5 DNI quantify solar variability in experiments. • Performance differences follow spectral delivery and visible band catalyst response.
Keywords:
Natural-sunlight photocatalysis
heterogeneous photocatalysis
emerging pollutants
solar concentrator
Fresnel lens
optical fiber light guiding
silicon nanowires
CuOx/graphene oxide heterostructures
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