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

Ehsan Nazarzadeh Zare, Sidra Iftekhar, Yuri Park, Jessy Joseph, Varsha Srivastava, Moonis Ali Khan, Pooyan Makvandi, Mika Sillanpaa, Rajender S. Varma

Research output: Contribution to journalReview articlepeer-review

96 Citations (Scopus)


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.

Original languageEnglish
Article number130907
Publication statusPublished - Oct 2021
Externally publishedYes


  • Mechanism
  • Non-spherical semiconductors
  • Organic pollutants
  • Photocatalytic degradation
  • Synthesis

ASJC Scopus subject areas

  • Environmental Engineering
  • General Chemistry
  • Environmental Chemistry
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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