Details
| Original language | English |
|---|---|
| Article number | 111816 |
| Journal | Optical materials |
| Volume | 122 |
| Early online date | 25 Nov 2021 |
| Publication status | Published - Dec 2021 |
Abstract
Mesoporous CdO/g-C3N4 nanocomposites have been constructed and applied in the photooxidation of ciprofloxacin (CIP) through illumination by visible light. The nanocomposite exhibits superior efficiency when compared to pure mesoporous CdO or pure g-C3N4. CdO incorporation onto g-C3N4 resulted in uniform dispersion of 7–13 nm onto layered g-C3N4 nanosheets. The photocatalytic CIP oxidation efficiency increased from 35% to 100% within 120 min with the use of 1–4% CdO/g-C3N4 nanocomposites. The photocatalytic CIP oxidation efficiency of the mesoporous 3.0% CdO/g-C3N4 nanocomposite is 4.5- and 10.0-fold greater than that of bare CdO and g-C3N4 nanosheets. Higher efficiency was a result of several factors: a perfect crystalline structure, a high surface area, a narrow bandgap, a mesoporous structure with uniformly dispersed CdO nanoparticles, and Z-scheme photocatalysis. The CdO/g-C3N4 photocatalyst was chemically stable and showed no reduction in efficiency after five applications. The findings exhibit a pathway for the fabrication of new materials that can promote Z-scheme photocatalysis with possible applications in pollutant remediation utilizing minimum energy due to the use of visible light.
Keywords
- CdO/g-CN, CIP photooxidation, Heterojunction, Mesoporous, Visible light
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Chemistry(all)
- Spectroscopy
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemistry(all)
- Organic Chemistry
- Chemistry(all)
- Inorganic Chemistry
- Engineering(all)
- Electrical and Electronic Engineering
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In: Optical materials, Vol. 122, 111816, 12.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Construction of mesoporous CdO/g-C3N4 nanocomposites for photooxidation of ciprofloxacin under visible light exposure
AU - Kadi, Mohammad W.
AU - Mohamed, Reda M.
AU - Bahnemann, Detlef W.
N1 - Funding Information: This project was funded by the Deanship of Scientific Research ( DSR ) at King Abdulaziz University , Jeddah, under grant no. RG-4-130-41 . The authors, therefore, acknowledge with thanks DSR for technical and financial support.
PY - 2021/12
Y1 - 2021/12
N2 - Mesoporous CdO/g-C3N4 nanocomposites have been constructed and applied in the photooxidation of ciprofloxacin (CIP) through illumination by visible light. The nanocomposite exhibits superior efficiency when compared to pure mesoporous CdO or pure g-C3N4. CdO incorporation onto g-C3N4 resulted in uniform dispersion of 7–13 nm onto layered g-C3N4 nanosheets. The photocatalytic CIP oxidation efficiency increased from 35% to 100% within 120 min with the use of 1–4% CdO/g-C3N4 nanocomposites. The photocatalytic CIP oxidation efficiency of the mesoporous 3.0% CdO/g-C3N4 nanocomposite is 4.5- and 10.0-fold greater than that of bare CdO and g-C3N4 nanosheets. Higher efficiency was a result of several factors: a perfect crystalline structure, a high surface area, a narrow bandgap, a mesoporous structure with uniformly dispersed CdO nanoparticles, and Z-scheme photocatalysis. The CdO/g-C3N4 photocatalyst was chemically stable and showed no reduction in efficiency after five applications. The findings exhibit a pathway for the fabrication of new materials that can promote Z-scheme photocatalysis with possible applications in pollutant remediation utilizing minimum energy due to the use of visible light.
AB - Mesoporous CdO/g-C3N4 nanocomposites have been constructed and applied in the photooxidation of ciprofloxacin (CIP) through illumination by visible light. The nanocomposite exhibits superior efficiency when compared to pure mesoporous CdO or pure g-C3N4. CdO incorporation onto g-C3N4 resulted in uniform dispersion of 7–13 nm onto layered g-C3N4 nanosheets. The photocatalytic CIP oxidation efficiency increased from 35% to 100% within 120 min with the use of 1–4% CdO/g-C3N4 nanocomposites. The photocatalytic CIP oxidation efficiency of the mesoporous 3.0% CdO/g-C3N4 nanocomposite is 4.5- and 10.0-fold greater than that of bare CdO and g-C3N4 nanosheets. Higher efficiency was a result of several factors: a perfect crystalline structure, a high surface area, a narrow bandgap, a mesoporous structure with uniformly dispersed CdO nanoparticles, and Z-scheme photocatalysis. The CdO/g-C3N4 photocatalyst was chemically stable and showed no reduction in efficiency after five applications. The findings exhibit a pathway for the fabrication of new materials that can promote Z-scheme photocatalysis with possible applications in pollutant remediation utilizing minimum energy due to the use of visible light.
KW - CdO/g-CN
KW - CIP photooxidation
KW - Heterojunction
KW - Mesoporous
KW - Visible light
UR - http://www.scopus.com/inward/record.url?scp=85120317924&partnerID=8YFLogxK
U2 - 10.1016/j.optmat.2021.111816
DO - 10.1016/j.optmat.2021.111816
M3 - Article
AN - SCOPUS:85120317924
VL - 122
JO - Optical materials
JF - Optical materials
SN - 0925-3467
M1 - 111816
ER -