An overview on non-spherical semiconductors for heterogeneous photocatalytic degradation of organic water contaminants

• Published in: Chemosphere (Oxford) Vol. 280; p. 130907
• Main Authors: Zare, Ehsan Nazarzadeh, Iftekhar, Sidra, Park, Yuri, Joseph, Jessy, Srivastava, Varsha, Khan, Moonis Ali, Makvandi, Pooyan, Sillanpaa, Mika, Varma, Rajender S.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2021
• Subjects: adsorption; carcinogenicity; coagulation; cost effectiveness; decontamination; Mechanism; mutagenicity; Non-spherical semiconductors; Organic pollutants; oxidation; photocatalysis; Photocatalytic degradation; reverse osmosis; semiconductors; Synthesis; ultrafiltration; water pollution; Photocatalytic degradation; MPC; PS; LPUV; L-H; HOFe; GDE; Organic pollutants; DOFe; DP; SCWO; Non-spherical semiconductors; HMs; Synthesis; EE2; DBP; MB; SPEF; MDP; THMs; US; WHO; MPUV; EF; MP; DCF; LPVUV; TOC; EO; VB; RhB; BPA; HEFe; CWAO; HANs; BDD; WAO; ENR; CTAB; Mechanism; AOPs; EDCs; WO; COD; CBZ; CB; PTFE; TDFe; CN; NPs; PEF; TIAA; PCPs; PC; PMS; ATL; PAHs; TCEP
• ISSN: 0045-6535; 1879-1298; 1879-1298
• DOI: 10.1016/j.chemosphere.2021.130907

Because of their carcinogenicity and mutagenicity, the elimination of organic contaminants from surface and subsurface water is a subject of environmental significance. Conventional water decontamination approaches such as membrane separation, ultrafiltration, adsorption, reverse osmosis, coagulation, etc., have relatively higher operating costs and can generate highly toxic secondary contaminants. On the other hand, heterogeneous photocatalysis, an advanced oxidation process (AOP), is considered a clean and cost-effective process for organic pollutants degradation. Owing to their distinctive structure and physicochemical properties non-spherical semiconductors have gained considerable limelight in the photocatalytic degradation of organic contaminants. The current review briefly introduces a wide range of organic water contaminants. Recent advances in non-spherical semiconductor assembly and their photocatalytic degradation applications are highlighted. The underlying mechanism, fundamentals of photocatalytic reactions, and the factors affecting the degradation performance are also alluded including the current challenges and future research perspectives. [Display omitted] •Applications of non-spherical semiconductors in photocatalytic degradation discussed.•Various parameters such as morphology and crystal plan were discussed.•There exists a correlation between catalyst morphology and its photocatalytic activity.•Reaction parameters e.g., catalyst concentration influenced in alter the reaction rates.