Wael A. Aboutaleb, Ibrahim M. Nassar, Ragab M. Mahmoud, A. Marey, Radwa A. El-Salamony
{"title":"黑砂作为一种高性价比的可见光下亚甲基蓝光修复催化剂","authors":"Wael A. Aboutaleb, Ibrahim M. Nassar, Ragab M. Mahmoud, A. Marey, Radwa A. El-Salamony","doi":"10.1007/s43621-023-00157-3","DOIUrl":null,"url":null,"abstract":"Abstract Methylene blue (MB) is commonly a persistent and perilous pollutant in industrial wastewater effluent. While MB has a massive negative effect on human and ecology safety. The neutralization of such harmful material would save a huge clean water amount. This work proposes the natural and abundant black sand as a catalyst for MB photodegradation. The sand sample was calcined at three temperatures of 300°, 400°, and 600 °C. The properties of samples were analyzed with different micro- as well as spectroscopic techniques. The experimental data revealed the sample's main composition of SiO 2 , Fe 2 O 3 , and Al 2 O 3 . XRD and XPS results proved the formation of mixed oxides composites due to calcination, especially at 400 °C. The UV– vis analysis conducted showed that samples can absorb light in the visible range. The photodegradation reached a maximum of 975.3%, 82.7%, and 75.7% for BS 400 , BS 600 , and BS 300 respectively; by illumination for 2.5 h in the visible range. The observed distinguishable catalytic performance was discussed via the spectroscopic analysis and oxygen availability in the catalyst lattice. When AO, t-BuOH, and BQ are used as scavengers instead of just BQ during the photodegradation of MB dye over BS 400 catalyst, the photodegradation rate drops significantly. The degradation % of MB dye diminished to 60%, and 70% by using AO, t-BuOH, and BQ scavengers; respectively. This proved that rather than hydroxyl radicals, superoxide radicals or positive hole production is the main determining step in MB photo-degradation over BS 400 catalyst.","PeriodicalId":34549,"journal":{"name":"Discover Sustainability","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Black sand as a cost-effective catalyst for methylene blue photo-remediation under visible light\",\"authors\":\"Wael A. Aboutaleb, Ibrahim M. Nassar, Ragab M. Mahmoud, A. Marey, Radwa A. El-Salamony\",\"doi\":\"10.1007/s43621-023-00157-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Methylene blue (MB) is commonly a persistent and perilous pollutant in industrial wastewater effluent. While MB has a massive negative effect on human and ecology safety. The neutralization of such harmful material would save a huge clean water amount. This work proposes the natural and abundant black sand as a catalyst for MB photodegradation. The sand sample was calcined at three temperatures of 300°, 400°, and 600 °C. The properties of samples were analyzed with different micro- as well as spectroscopic techniques. The experimental data revealed the sample's main composition of SiO 2 , Fe 2 O 3 , and Al 2 O 3 . XRD and XPS results proved the formation of mixed oxides composites due to calcination, especially at 400 °C. The UV– vis analysis conducted showed that samples can absorb light in the visible range. The photodegradation reached a maximum of 975.3%, 82.7%, and 75.7% for BS 400 , BS 600 , and BS 300 respectively; by illumination for 2.5 h in the visible range. The observed distinguishable catalytic performance was discussed via the spectroscopic analysis and oxygen availability in the catalyst lattice. When AO, t-BuOH, and BQ are used as scavengers instead of just BQ during the photodegradation of MB dye over BS 400 catalyst, the photodegradation rate drops significantly. The degradation % of MB dye diminished to 60%, and 70% by using AO, t-BuOH, and BQ scavengers; respectively. 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Black sand as a cost-effective catalyst for methylene blue photo-remediation under visible light
Abstract Methylene blue (MB) is commonly a persistent and perilous pollutant in industrial wastewater effluent. While MB has a massive negative effect on human and ecology safety. The neutralization of such harmful material would save a huge clean water amount. This work proposes the natural and abundant black sand as a catalyst for MB photodegradation. The sand sample was calcined at three temperatures of 300°, 400°, and 600 °C. The properties of samples were analyzed with different micro- as well as spectroscopic techniques. The experimental data revealed the sample's main composition of SiO 2 , Fe 2 O 3 , and Al 2 O 3 . XRD and XPS results proved the formation of mixed oxides composites due to calcination, especially at 400 °C. The UV– vis analysis conducted showed that samples can absorb light in the visible range. The photodegradation reached a maximum of 975.3%, 82.7%, and 75.7% for BS 400 , BS 600 , and BS 300 respectively; by illumination for 2.5 h in the visible range. The observed distinguishable catalytic performance was discussed via the spectroscopic analysis and oxygen availability in the catalyst lattice. When AO, t-BuOH, and BQ are used as scavengers instead of just BQ during the photodegradation of MB dye over BS 400 catalyst, the photodegradation rate drops significantly. The degradation % of MB dye diminished to 60%, and 70% by using AO, t-BuOH, and BQ scavengers; respectively. This proved that rather than hydroxyl radicals, superoxide radicals or positive hole production is the main determining step in MB photo-degradation over BS 400 catalyst.
期刊介绍:
Discover Sustainability is part of the Discover journal series committed to providing a streamlined submission process, rapid review and publication, and a high level of author service at every stage. It is a multi-disciplinary, open access, community-focussed journal publishing results from across all fields relevant to sustainability research.
We need more integrated approaches to social, environmental and technological systems to address some of the challenges to the sustainability of life on Earth. Discover Sustainability aims to support multi-disciplinary research and policy developments addressing all 17 of the United Nations Sustainable Development Goals (SDGs). The journal is intended to help researchers, policy-makers and the general public understand how we can ensure the well-being of current and future generations within the limits of the natural world by sustaining planetary and human health. It will achieve this by publishing open access research from across all fields relevant to sustainability.
Submissions to Discover Sustainability should seek to challenge existing orthodoxies and practices and contribute to real-world change by taking a multi-disciplinary approach. They should also provide demonstrable solutions to the challenges of sustainability, as well as concrete suggestions for practical implementation, such as how the research can be operationalised and delivered within a wide socio-technical system.