articleEnvironmental Science & TechnologyFeb 18, 2026Closed access

Sunlight-Driven Production of Hydroxyl Radical from Manganese Minerals

DQDeyu QinCZChen ZhangFQFanzhi QinHWHao WengHLHanzhuo Luo

Hunan University · Ministry of Education · +1 more institution

PubMed
Indexed incrossrefpubmed

Abstract

Manganese (Mn) minerals are abundant across Earth’s surface and have recently been recognized as sunlight-active materials. Here, we report that Mn minerals exhibit unexpectedly high photochemical reactivity for the generation of reactive oxygen species (ROS) including hydroxyl radicals (•OH) and hydrogen peroxide (H2O2). Through systematic evaluation of five representative Mn minerals (pyrolusite, psilomelane, rhodochrosite, hausmannite, and vernadite), we revealed •OH production rates reaching 16.2–168.6 μM over 120 min sunlight irradiation. Both valence band (VB) water oxidation and conduction band (CB) oxygen reduction contributed to ROS productions, with relative contributions varying among minerals.…

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6
total citations
FWCI
62.23
Percentile
100%
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48
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8

Topics & keywords

Topics
Keywords
  • Manganese
  • Radical
  • Hydrogen peroxide
  • Hydroxyl radical
  • Oxygen
  • Valence (chemistry)
  • Reactive oxygen species
  • Redox
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