Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blue
The detoxification of dye-contaminated water by photocatalysis has become a research priority. Here, a novel hybrid material, cuprous oxide/sunflower stem pith (Cu2O/SSP), was successfully synthesized in situ, using copper hydroxide gel, prepared by ion exchange, as the precursor to Cu2O. The presen...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-12-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/86/11/3041 |
| _version_ | 1811200595021791232 |
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| author | Xiangyao Liu Haili Zhang Guolin Jing |
| author_facet | Xiangyao Liu Haili Zhang Guolin Jing |
| author_sort | Xiangyao Liu |
| collection | DOAJ |
| description | The detoxification of dye-contaminated water by photocatalysis has become a research priority. Here, a novel hybrid material, cuprous oxide/sunflower stem pith (Cu2O/SSP), was successfully synthesized in situ, using copper hydroxide gel, prepared by ion exchange, as the precursor to Cu2O. The presence of Cu2O nanoparticles on the SSP was confirmed by scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction analyses. Using methylene blue (MB) as the target pollutant, Cu2O/SSP delivered excellent adsorption–photocatalytic degradation and was readily photoregenerated. Cu2O/SSP removed 72.7% of MB after 60 min under visible light irradiation, an increase of 15.6 % compared with unmodified SSP. SSP plays three roles in the removal of MB: it acts as an adsorbent for the MB, a carrier for the Cu2O nanoparticles and it also inhibits photocorrosion of Cu2O. The mechanism of adsorption–photocatalysis by Cu2O/SSP was investigated and a description of the mechanism is provided. This study paves the way for the detoxification of dye-containing wastewater using hybrid biomass materials.
HIGHLIGHTS
Cu2O/SSP was synthesized in situ using copper hydroxide gel, prepared by ion exchange, as the precursor to Cu2O.;
Cu2O nanoparticles were well scattered and anchored to the surface of SSP.;
The Cu2O combined with SSP was effective at inhibiting photocorrosion of Cu2O.;
Cu2O/SSP showed excellent adsorption–photocatalytic and photoregeneration performance.;
The adsorption–photocatalysis mechanism for the MB detoxification was discussed.; |
| first_indexed | 2024-04-12T02:06:07Z |
| format | Article |
| id | doaj.art-c696594d9ed141fe8e6da3166d2f0100 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-12T02:06:07Z |
| publishDate | 2022-12-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-c696594d9ed141fe8e6da3166d2f01002022-12-22T03:52:31ZengIWA PublishingWater Science and Technology0273-12231996-97322022-12-0186113041305010.2166/wst.2022.389389Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blueXiangyao Liu0Haili Zhang1Guolin Jing2 School of Chemistry and Materials Science, Heilongjiang University, Harbin, Heilongjiang 150080, China Chemistry and chemical engineering school, Northeast Petroleum University, Daqing, Heilongjiang 163318, China Chemistry and chemical engineering school, Northeast Petroleum University, Daqing, Heilongjiang 163318, China The detoxification of dye-contaminated water by photocatalysis has become a research priority. Here, a novel hybrid material, cuprous oxide/sunflower stem pith (Cu2O/SSP), was successfully synthesized in situ, using copper hydroxide gel, prepared by ion exchange, as the precursor to Cu2O. The presence of Cu2O nanoparticles on the SSP was confirmed by scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction analyses. Using methylene blue (MB) as the target pollutant, Cu2O/SSP delivered excellent adsorption–photocatalytic degradation and was readily photoregenerated. Cu2O/SSP removed 72.7% of MB after 60 min under visible light irradiation, an increase of 15.6 % compared with unmodified SSP. SSP plays three roles in the removal of MB: it acts as an adsorbent for the MB, a carrier for the Cu2O nanoparticles and it also inhibits photocorrosion of Cu2O. The mechanism of adsorption–photocatalysis by Cu2O/SSP was investigated and a description of the mechanism is provided. This study paves the way for the detoxification of dye-containing wastewater using hybrid biomass materials. HIGHLIGHTS Cu2O/SSP was synthesized in situ using copper hydroxide gel, prepared by ion exchange, as the precursor to Cu2O.; Cu2O nanoparticles were well scattered and anchored to the surface of SSP.; The Cu2O combined with SSP was effective at inhibiting photocorrosion of Cu2O.; Cu2O/SSP showed excellent adsorption–photocatalytic and photoregeneration performance.; The adsorption–photocatalysis mechanism for the MB detoxification was discussed.;http://wst.iwaponline.com/content/86/11/3041adsorption–photocatalysiscuprous oxideion exchangemethylene bluesunflower stem pith |
| spellingShingle | Xiangyao Liu Haili Zhang Guolin Jing Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blue Water Science and Technology adsorption–photocatalysis cuprous oxide ion exchange methylene blue sunflower stem pith |
| title | Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blue |
| title_full | Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blue |
| title_fullStr | Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blue |
| title_full_unstemmed | Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blue |
| title_short | Synthesis of visible light-responsive cuprous oxide/sunflower stem pith hybrid materials for detoxification of methylene blue |
| title_sort | synthesis of visible light responsive cuprous oxide sunflower stem pith hybrid materials for detoxification of methylene blue |
| topic | adsorption–photocatalysis cuprous oxide ion exchange methylene blue sunflower stem pith |
| url | http://wst.iwaponline.com/content/86/11/3041 |
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