What question did this study set out to answer?

The aim is to explore the photocatalytic activity of copper-zinc oxide heterojunctions formed on ZnO nanorods.

April 3, 2026Open Access

Photo-deposition of Cu 2 O on Pre-Annealed ZnO Nanorods Yields pn-Heterojunctions with Enhanced Photocatalytic Activity

FSFredric G SvenssonUppsala University EDErik DjurbergUppsala University YYYige YanUniversité Claude Bernard Lyon 1

Key Points

The aim is to explore the photocatalytic activity of copper-zinc oxide heterojunctions formed on ZnO nanorods.
Conducted photo-deposition of copper oxide on pre-annealed ZnO nanorods.
Analyzed the structural and optical properties of the resulting heterojunctions.
Evaluated the photocatalytic performance under visible light.
Studied the charge separation efficiency in the heterojunctions.
Heterojunctions exhibited improved photocatalytic activity compared to individual components.
Efficient charge separation was confirmed, enhancing overall photocatalysis.
Optimal copper deposition levels correlated with maximum photocatalytic performance.

Abstract

Copper-zinc oxide p-n heterojunctions are promising visible-light-active photocatalysts because their intrinsic bandgaps and band alignment facilitates efficient charge separation. However, achieving controlled deposition of copper oxide nanoparticles on ZnO nanorods...

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