High-Pressure High-Temperature Nanodiamond-Modified ZnO Nanocomposites as Promising Photocatalysts: Synthesis and Characterization.

ABSTRACT: Zinc oxide (ZnO) nanostructures suffer from fast electron-hole recombination, limiting their applicability in photocatalytic environmental remediation, and carbon additives such as detonation nanodiamonds (DNDs) are constrained by their high defect density. To address this, ZnO nanocomposites modified with high-pressure, high-temperature nanodiamonds (HPHT NDs) were synthesized to evaluate whether their intrinsically lower defect density-evidenced by a dominant diamond Raman peak at 1330 cm^-1 and a low sp² carbon fraction of 6.6% compared to oxidized DNDs with strong D/G bands (~1350/1580 cm^-1) and ~25-35% sp² carbon-can enhance charge separation and improve photocatalytic activity. Oxidized HPHT NDs bearing carbonyl, carboxyl, and hydroxyl group

SUBMITTER: Micova J 

PROVIDER: S-EPMC12899666 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature