Structure · dataset · 2026
Photocatalytic and Antimicrobial Properties of Cobalt-Doped Ag<sub>3</sub>PO<sub>4</sub> Synthesized by Hydrothermal Method
Listed in ZivaHub and Deakin Research Online — shown once because both records carry DOI 10.1021/acsomega.6c06289.s001
Pristine and cobalt-doped silver phosphate (Ag<sub>3</sub>PO<sub>4</sub>) containing nominal Co concentrations of 0.5, 1, 3, and 5 mol % were synthesized by a hydrothermal method to investigate the influence of Co incorporation on structural, optical, photocatalytic, antimicrobial, and antiphotocorrosion properties.
Description
X-ray diffraction and Rietveld refinement confirmed preservation of the cubic Ag<sub>3</sub>PO<sub>4</sub> structure, while variations in lattice parameters, Raman modes, particle morphology, and surface chemical states indicated Co-induced local distortion and defect formation.
EDX and ICP-OES confirmed the presence of cobalt, whereas XPS revealed modifications in the Ag and O surface environments. The fundamental optical bandgaps ranged from 2.37 to 2.46 eV, with additional sub-bandgap absorptions at 1.68 and 1.65 eV for AgP:3Co and AgP:5Co, respectively. Progressive photoluminescence quenching demonstrated that Co strongly modifies charge-relaxation pathways.
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Despite their low BET surface areas (0.953–5.608 m<sup>2</sup> g<sup>–1</sup>), the doped materials displayed enhanced photocatalytic activity, showing that performance was not controlled by surface area alone. AgP:3Co exhibited the highest methylene-blue removal under simulated solar irradiation, reaching 93.26% after 20 min, with 120.26 × 10<sup>–3</sup> min<sup>–1</sup> and <i>t</i><sub>1/2</sub> = 5.76 min. Scavenger experiments identified photogenerated holes and hydroxyl radicals as the predominant oxidative species.
After five reuse cycles, AgP:3Co retained approximately 87% activity and showed greater structural and morphological stability than pristine Ag<sub>3</sub>PO<sub>4</sub>. All samples also exhibited strain-dependent antimicrobial activity against reference strains and clinical isolates. Overall, 3 mol % Co provided the most favorable balance among defect chemistry, charge utilization, photocatalytic efficiency, antimicrobial activity, and resistance to photocorrosion.
Links
Where it is published
- DOI doi.org/10.1021/acsomega.6c06289.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
Provenance · 2 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34029964 | 12 d ago | JSON v1 |
| Deakin Research Online | oai:figshare.com:article/34029964 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].anzsrc:group:3402 | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['Inorganic Chemistry'] |
| concepts[field].anzsrc:group:3402 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Inorganic Chemistry'] |
| concepts[field].local:field:chemistry | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |