Detection of low-level humic acid in water using room temperature-synthesized copper (I) oxide colloids

A glucose-reduced, room temperature-synthesized colloidal Cu 2 O solution (CCS) was used for the first time to detect humic acid (HA), a carcinogen-promoting substance in aqueous solution. The CCS sensor was characterized using standard spectroscopy and microscopy techniques. The sensor evolved as a...

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Bibliographic Details
Published in:MRS communications 2019-12, Vol.9 (4), p.1317-1322
Main Authors: Fakayode, Olayemi J., Adekunle, Abolanle S., Nkambule, Thabo T. I.
Format: Article
Language:English
Subjects:
Acids
Aqueous environments
Aqueous solutions
Biomaterials
Buffer solutions
Carboxylic acids
Carcinogens
Catalysis
Characterization and Evaluation of Materials
Drinking water
Fourier transforms
Humic acids
Materials Engineering
Materials Science
Metal oxides
Nanoparticles
Nanotechnology
Phase transitions
Photocatalysis
Photodynamic therapy
Pollutants
Polymer Sciences
Research Letter
Room temperature
Scanning electron microscopy
Sensors
Spectrum analysis
Synthesis
Water treatment
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Summary:A glucose-reduced, room temperature-synthesized colloidal Cu 2 O solution (CCS) was used for the first time to detect humic acid (HA), a carcinogen-promoting substance in aqueous solution. The CCS sensor was characterized using standard spectroscopy and microscopy techniques. The sensor evolved as a carboxylic acid-capped peach-pink solution after synthesis. The result of the interaction of the sensor with HA in phosphate buffer solution (pH 7) showed a detection limit of 1.5891 × 10 −2 mg/L over a concentration range of 0.00–0.41 mg/L. This finding suggests that the sensor may be useful for monitoring low levels of HA in aqueous environments.
ISSN:2159-6859
2159-6867
DOI:10.1557/mrc.2019.128