Trash GGBFS-based geopolymer as a novel sunlight-responsive photocatalyst for dye discolouration

Bora, Leena V.; Rathod, Manan; Kapadia, Kush; Thakkar, Sonal; Ravuru, Narasimha Reddy; Chougule, Sandesh S.; Bora, Nisha V.

doi:10.1016/j.jics.2022.100560

Cited by 3 publications

(2 citation statements)

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“…Wei et al (2019) prepared Fe 3 O 4 /ZnO/ZnS for MB removal, which removed 75.3% within 4 h. The Ag-coated ZnO nanoflowers show a similar result with about 98.32% MB degradation efficiency (Shahid et al, 2020). Recently, Bora et al (2022) synthesized Ag 2 CO 3 /ZnO via a simple precipitation route and reported it can achieve a totally TOC removal for MB wastewater in 30 min and 32% disinfection of Escherichia coli in an hour.…”

Section: Zno Compositesmentioning

confidence: 87%

“…The following research using the same bioinspired ZnO@ZnS photocatalyst achieved nearly 97% of MB after 60 min with mineralization of >98% of a mixture of MB, 4-nitrophenol (4-NP), and RhB after 210 min and the removal of nearly 65% of Cr(VI) after 180 min . Recently, Bora et al (2022) used a waste material-ground granulated blast furnace slag (GGBFS) as a low-cost geopolymer to hybridize with ZnO. They found that, due to the increased surface area, the discoloration efficiency of textile wastewater is twice better than normal ZnO (Table 4).…”

Section: Zno Compositesmentioning

confidence: 99%

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Application of visible light active photocatalysis for water contaminants: A review

Sun

O’Connell

2022

Water Environment Research

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Organic water pollutants are ubiquitous in the natural environment arising from domestic products as well as current and legacy industrial processes. Many of these organic water pollutants are recalcitrant and only partially degraded using conventional water and wastewater treatment processes. In recent decades, visible light active photocatalyst has gained attention as a non‐conventional alternative for the removal of organic pollutants during water treatment, including industrial wastewater and drinking water treatment. This paper reviews the current state of research on the use of visible light active photocatalysts, their modified methods, efficacy, and pilot‐scale applications for the degradation of organic pollutants in water supplies and waste streams. Initially, the general mechanism of the visible light active photocatalyst is evaluated, followed by an overview of the major synthesis techniques. Because few of these photocatalysts are commercialized, particular attention was given to summarizing the different types of visible light active photocatalysts developed to the pilot‐scale stage for practical application and commercialization. The organic pollutant degradation ability of these visible light active photocatalysts was found to be considerable and in many cases comparable with existing and commercially available advanced oxidation processes. Finally, this review concludes with a summary of current achievements and challenges as well as possible directions for further research. Practitioner Points Visible light active photocatalysis is a promising advanced oxidation process (AOP) for the reduction of organic water pollutants. Various mechanisms of photocatalysis using visible light active materials are identified and discussed. Many recent photocatalysts are synthesized from renewable materials that are more sustainable for applications in the 21st century. Only a small number of pilot‐scale applications exist and these are outlined in this review.

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Section: Zno Compositesmentioning

confidence: 87%

Section: Zno Compositesmentioning

confidence: 99%