Citation:

Nasrollahzadeh, M., M. Sajjadi, S. Iravani, AND R. Varma. Green-synthesized nanocatalysts and nanomaterials for water treatment: current challenges and future perspectives. JOURNAL OF HAZARDOUS MATERIALS. Elsevier Science Ltd, New York, NY, 401:123401, (2021). https://doi.org/10.1016/j.jhazmat.2020.123401

Impact/Purpose:

Advanced nanomaterials for water treatment comprising biogenic-, natural biopolymer- and cellulose-based nanomaterials, carbon nanotubes, graphene, and carbon- and graphene quantum dots, are highlighted in this review.The compiled information would be highly useful for broad discipline of researchers and technical personal engaged in water research, material science and water chemistry, in general.

Description:

The supply of safe drinking and clean water is becoming increasingly challenging proposition throughout the world. The deployment of environmentally sustainable nanomaterials with unique advantages namely high efficiency and selectivity, earth-abundance, recyclability, low-cost of production processes, and the stability, has been a priority although several important challenges and constraints still remained unresolved. Cellulose-based nanomaterials such as cellulose nanocrystals and nanofibrils, and carbon nanomaterials namely activated carbon, multi-walled and single-walled carbon nanotubes, have been developed and applied as adsorbents for wastewater treatment and purification; natural biopolymer-derived (nano)materials as well as greener and biosynthesized nanomaterials have shown significant promise for water and wastewater treatment and purification, especially, for industrial- and pharmaceutical-laden wastes). This review encompasses advanced carbonaceous nanomaterials and methodologies for the elimination of contaminants and ionic metals in aqueous media, deploying abundant cellulosic nanomaterials, and novel nanosorbents for wastewater, drinking and ground water treatment. Additionally, recent trends and challenges pertaining to the sustainable and biogenic nanomaterials and their appliances for treating and purifying wastewater are highlighted.

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