{
  "abstract": "The development of adsorbents that simultaneously achieve high adsorption capacity and rapid kinetics is critical for treating organic dyes, particularly at high concentrations. Herein, novel used cigarette filter (UCF)-based carbons were synthesized via one-step pyrolysis employing an eco-friendly activator KHCO3. The resulting CPCHK-800 carbon material possesses a high specific surface area of 1533 m2/g and a high volume of 0.716 cm3/g. Benefiting from a three-dimensional (3D) honeycomb architecture of graphene-like nanosheets and abundant oxygen groups (19.98 wt %), CPCHK-800 exhibited high adsorption capacities for MB (1328.7 mg/g), RhB (3129.5 mg/g), and MG (3425.9 mg/g) at an adsorbent dosage of 0.2 g/L. Notably, near-complete removal of MB was achieved within 10 min at 100 mg/L, and an adsorption capacity of 1023.9 mg/g was reached within 5 min at 400 mg/L and 0.2 g/L dosage. Such rapid kinetics highlight its potential for treating high-concentration dye wastewater. The Langmuir model best describes the isotherms (R2 = 0.982, qmax = 1657.4 mg/g) with favorable RL values (0.0049–0.0312). The adsorption process is spontaneous and endothermic. Mechanistic studies reveal that MB adsorption involves synergistic contributions from pore filling, hydrogen bonding, electrostatic attraction, π-π, and n-π interactions. Furthermore, CPCHK-800 maintains 92.2% of its initial adsorption capacity after five cycles, decreasing from 1089.3 to 1004.7 mg/g, and maintains 87.3% of its salt-free performance at 0.5 mol/L NaCl, highlighting its excellent reusability and anti-interference capability. These quantitative results confirm that CPCHK-800 is a promising, cost-effective, and environmentally safe adsorbent for practical high-concentration cationic dye wastewater treatment.",
  "abstract_shown": true,
  "affiliations": [
    "Lyuliang University , , Lishi, ,"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Xiaodong Huo",
      "orcid": "0009-0007-6693-0373"
    },
    {
      "affs": [
        0
      ],
      "name": "Jianjun Wang"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhonghui Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c1gq205vq35c0.bib",
  "cited_by": 0,
  "doi": "10.1021/acsomega.6c08713",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13736919/",
  "id": "c1gq205vq35c0",
  "issns": [
    "2470-1343"
  ],
  "landing_url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c08713/5454140/Ultrahigh-Capacity-Adsorption-of-Cationic-Dyes",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
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    [
      "openalex",
      "2312|Adsorption and biosorption for pollutant removal"
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  "openalex": "W7223068785",
  "pdf_url": "https://pubs.acs.org/doi/pdf/10.1021/acsomega.6c08713",
  "pmcid": "PMC13736919",
  "pmid": "42991927",
  "published": "2026-10-20",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/c1gq205vq35c0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:39Z",
      "native_id": "10.1021/acsomega.6c08713",
      "source": "crossref",
      "url": "https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c08713/5454140/Ultrahigh-Capacity-Adsorption-of-Cationic-Dyes"
    },
    {
      "first_seen": "2026-11-09T12:22:16Z",
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      "url": "https://doi.org/10.1021/acsomega.6c08713"
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  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:2312|Adsorption and biosorption for pollutant removal",
      "subfield": "hydrology-soils"
    }
  ],
  "title": "Ultrahigh-Capacity Adsorption of Cationic Dyes with Rapid Kinetics Using Used Cigarette Filters-Based Carbons Activated by KHCO3",
  "title_text": "Ultrahigh-Capacity Adsorption of Cationic Dyes with Rapid Kinetics Using Used Cigarette Filters-Based Carbons Activated by KHCO3",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T12:22:16Z",
  "url": "https://research.draconitic.com/paper/c1gq205vq35c0",
  "venue": "ACS Omega",
  "versions": []
}