Enhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment
Among chemical water pollutants, Cr(VI) is a highly toxic heavy metal; solar photocatalysis is a cost-effective method to reduce Cr(VI) to innocuous Cr(III). In this research work, an efficient and economically feasible ZnO/CuO nanocomposite was grafted onto the polyester fabric ZnO/CuO/PF through t...
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MDPI AG
2021
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oai:doaj.org-article:52192a53fca84e4b9399c87aebfc4b902021-11-25T18:49:40ZEnhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment10.3390/polym132240472073-4360https://doaj.org/article/52192a53fca84e4b9399c87aebfc4b902021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/4047https://doaj.org/toc/2073-4360Among chemical water pollutants, Cr(VI) is a highly toxic heavy metal; solar photocatalysis is a cost-effective method to reduce Cr(VI) to innocuous Cr(III). In this research work, an efficient and economically feasible ZnO/CuO nanocomposite was grafted onto the polyester fabric ZnO/CuO/PF through the SILAR method. Characterization by SEM, EDX, XRD, and DRS confirmed the successful grafting of highly crystalline, solar active nanoflakes of ZnO/CuO nanocomposite onto the polyester fabric. The grafting of the ZnO/CuO nanocomposite was confirmed by FTIR analysis of the ZnO/CuO/PF membrane. A solar photocatalytic reduction reaction of Cr(VI) was carried out by ZnO/CuO/PF under natural sunlight (solar flux 5–6 kW h/m<sup>2</sup>). The response surface methodology was employed to determine the interactive effect of three reaction variables: initial concentration of Cr(VI), pH, and solar irradiation time. According to UV/Vis spectrophotometry, 97% of chromium was removed from wastewater in acidic conditions after four hours of sunlight irradiation. ZnO/CuO/PF demonstrated reusability for 11 batches of wastewater under natural sunlight. Evaluation of Cr(VI) reduction was also executed by complexation of Cr(VI) and Cr(III) with 1, 5-diphenylcarbazide. The total percentage removal of Cr after solar photocatalysis was carried out by AAS of the wastewater sample. The ZnO/CuO/PF enhanced the reduction of Cr(VI) metal from wastewater remarkably.Ambreen AsharIjaz Ahmad BhattiAsim JilaniMuhammad MohsinSadia RasulJaved IqbalMuhammad Bilal ShakoorAbdullah G. Al-SehemiS. WagehAhmed A. Al-GhamdiMDPI AGarticlechromium (VI) reductionZnO/CuO/PF photocatalytic membrane reactorresponse surface methodologyOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 4047, p 4047 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
chromium (VI) reduction ZnO/CuO/PF photocatalytic membrane reactor response surface methodology Organic chemistry QD241-441 |
| spellingShingle |
chromium (VI) reduction ZnO/CuO/PF photocatalytic membrane reactor response surface methodology Organic chemistry QD241-441 Ambreen Ashar Ijaz Ahmad Bhatti Asim Jilani Muhammad Mohsin Sadia Rasul Javed Iqbal Muhammad Bilal Shakoor Abdullah G. Al-Sehemi S. Wageh Ahmed A. Al-Ghamdi Enhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment |
| description |
Among chemical water pollutants, Cr(VI) is a highly toxic heavy metal; solar photocatalysis is a cost-effective method to reduce Cr(VI) to innocuous Cr(III). In this research work, an efficient and economically feasible ZnO/CuO nanocomposite was grafted onto the polyester fabric ZnO/CuO/PF through the SILAR method. Characterization by SEM, EDX, XRD, and DRS confirmed the successful grafting of highly crystalline, solar active nanoflakes of ZnO/CuO nanocomposite onto the polyester fabric. The grafting of the ZnO/CuO nanocomposite was confirmed by FTIR analysis of the ZnO/CuO/PF membrane. A solar photocatalytic reduction reaction of Cr(VI) was carried out by ZnO/CuO/PF under natural sunlight (solar flux 5–6 kW h/m<sup>2</sup>). The response surface methodology was employed to determine the interactive effect of three reaction variables: initial concentration of Cr(VI), pH, and solar irradiation time. According to UV/Vis spectrophotometry, 97% of chromium was removed from wastewater in acidic conditions after four hours of sunlight irradiation. ZnO/CuO/PF demonstrated reusability for 11 batches of wastewater under natural sunlight. Evaluation of Cr(VI) reduction was also executed by complexation of Cr(VI) and Cr(III) with 1, 5-diphenylcarbazide. The total percentage removal of Cr after solar photocatalysis was carried out by AAS of the wastewater sample. The ZnO/CuO/PF enhanced the reduction of Cr(VI) metal from wastewater remarkably. |
| format |
article |
| author |
Ambreen Ashar Ijaz Ahmad Bhatti Asim Jilani Muhammad Mohsin Sadia Rasul Javed Iqbal Muhammad Bilal Shakoor Abdullah G. Al-Sehemi S. Wageh Ahmed A. Al-Ghamdi |
| author_facet |
Ambreen Ashar Ijaz Ahmad Bhatti Asim Jilani Muhammad Mohsin Sadia Rasul Javed Iqbal Muhammad Bilal Shakoor Abdullah G. Al-Sehemi S. Wageh Ahmed A. Al-Ghamdi |
| author_sort |
Ambreen Ashar |
| title |
Enhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment |
| title_short |
Enhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment |
| title_full |
Enhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment |
| title_fullStr |
Enhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment |
| title_full_unstemmed |
Enhanced Solar Photocatalytic Reduction of Cr(VI) Using a (ZnO/CuO) Nanocomposite Grafted onto a Polyester Membrane for Wastewater Treatment |
| title_sort |
enhanced solar photocatalytic reduction of cr(vi) using a (zno/cuo) nanocomposite grafted onto a polyester membrane for wastewater treatment |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/52192a53fca84e4b9399c87aebfc4b90 |
| work_keys_str_mv |
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