Altered zirconium dioxide based photocatalyst for enhancement of organic pollutants degradation: A review. (October 2022)

• Record Type: Journal Article
• Authors: Aldeen, E.M. Sharaf; Jalil, A.A.; Mim, R.S.; Alhebshi, A.; Hassan, N.S.; Saravanan, R.
• Is Part Of: Chemosphere. Volume 304(2022)
• Publication Date: 2022-10
• Subjects: Zirconia -- Modification -- Photodegradation -- Organic pollutants -- Water treatment; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2022.135349
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Heterogeneous advanced oxidation processes are a promising approach for cost-efficient removal of pollutants using semiconductors. Zirconium dioxide (ZrO2 ) is an auspicious material for photocatalytic activity owning to its suitable bandgap, stability, and low cost. However, ZrO2 suffers from fast recombination rate, and poor light harvesting ability. Nonetheless, extra modification has also shown improvements and therefore is worth investigating. The endeavour of this paper initially discusses the fundamentals with respect to reactive species, classification, and synthesis methods for ZrO2 . Furthermore, with particular consideration to stability and reusability, several additional modification approaches for ZrO2 -based photocatalysts such as doping and noble metals loading. Furthermore, the formation of heterojunctions has also been shown to boost photocatalytic activity while inhibiting charge carrier recombination. Finally, photocatalyst separation via magnetic-based photocatalysts are elucidated. As a result, ZrO2 -based photocatalysts are regarded as a promising emerging technology that warrants further development and research. Graphical abstract: Image 1 Highlights: Fundamental characteristics and physicochemical properties of ZrO2 are discussed. The extra-modification strategies for photocatalytic enhancement are discussed. Doping and heterojunctions enhanced the photocatalytic activity. The modified ZrO2 -based photocatalyst outperforms pristine ZrO2 . The limitations and future direction of ZrO2 -based photocatalysts are discussed.