{
  "abstract": "Treatment of hydrocarbon emissions such as methane and formaldehyde require effective conversion alongside control of energy consumption and secondary pollutant formation. A continuous-flow methane and formaldehyde treatment system combining ultraviolet-C (UVC) irradiation, manganese dioxide (MnO2), and water addition was investigated in this study. Optical, thermal, and structural characterisation established the experimental platform, while irradiation on-off measurements, gas chromatography (GC), and infrared (IR) spectroscopy assessed reaction conversion, reactor response, and any residual ozone formation. Humid condition with MnO2 catalyst provides the highest methane conversion and the presence of the MnO2 suppressed ozone of the exit stream. Methane-free control experiments showed that oxygen concentration and MnO2 loading influenced the levels of ozone of the exit stream. Under humid conditions, 1.5 g of MnO2 achieved complete methane conversion across inlet concentrations of 200-10,000 ppm at an incident irradiance of 42 mW cm-2. Mixed feed experiments further demonstrated simultaneous conversion of methane, methanol, and formaldehyde with conversions at 100%, 87% and 86%, respectively under an incident irradiance of 85 mW cm-2. These results established the lab-scale potential of UV-MnO2 treatment for methane and volatile organic compounds.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Engineering",
    "University of Cambridge"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Zhengyi Wu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Ning Wang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Tze Yeung Cho"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Tzia Ming Onn",
      "orcid": "0000-0002-7523-0746"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6g089qfj1xdg2.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009454/v1",
  "fulltext_url": null,
  "id": "6g089qfj1xdg2",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009454/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2105|Advanced Photocatalysis Techniques"
    ]
  ],
  "openalex": "W7214391423",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15009454/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-24",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/6g089qfj1xdg2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:21Z",
      "native_id": "10.26434/chemrxiv.15009454",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009454/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "source:chemrxiv",
      "subfield": "general"
    }
  ],
  "title": "Photoactivated Hydrocarbon Oxidation Coupled with Ozone Decomposition with MnO2 Catalyst",
  "title_text": "Photoactivated Hydrocarbon Oxidation Coupled with Ozone Decomposition with MnO2 Catalyst",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:21Z",
  "url": "https://research.draconitic.com/paper/6g089qfj1xdg2",
  "venue": "ChemRxiv",
  "versions": []
}