Nanomaterials and Water Treatment: Pharmaceutical Degradation, Membrane Filtration, Adsorption, and Optical Sensors

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 1411

Special Issue Editor


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Guest Editor
School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
Interests: nanofibers; separating membranes; micro-nano structure regulation; metal-organic frameworks

Special Issue Information

Dear Colleagues,

The advantages of nanomaterials in the field of water treatment are particularly prominent. Firstly, their ultrafine nanoscale size provides a large specific surface area, enabling more efficient contact and adsorption of pollutants in water, including tiny heavy metal ions and complex organic pollutants. Secondly, when utilized as catalysts, nanomaterials can significantly lower the activation energy of chemical reactions, accelerate pollutant decomposition processes, and achieve higher quality water purification in a shorter timeframe. Furthermore, the flexibility of nanotechnology allows for the design of nanomaterials with specific functions and selectivity tailored to address particular water quality issues and pollutant types, thereby achieving precise governance while avoiding excessive treatment of harmless components and ensuring maximum utilization of water resources with environmental friendliness.

The current Special Issue of Nanomaterials aims to showcase the latest advancements in the application of nanoparticles for water treatment, including pharmaceutical degradation, membrane filtration, adsorption, and optical sensors for pollutant separation and degradation to produce purified water. These innovative applications not only enhance water resource efficiency but also provide crucial technological support for ecological protection and addressing global water scarcity challenges.

Dr. Wei Wang
Guest Editor

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Keywords

  • sustainable nanomaterials
  • nanofiber membranes
  • metal–organic frameworks as catalysts and antibacterial agents
  • metallic oxide
  • removal of heavy metals
  • removal of organic compounds

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Published Papers (1 paper)

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Research

18 pages, 5520 KiB  
Article
Carbon-Nanotube-Based Superhydrophobic Magnetic Nanomaterial as Absorbent for Rapid and Efficient Oil/Water Separation
by Rabiga M. Kudaibergenova, Fernanda F. Roman, Adriano S. Silva and Gulnar K. Sugurbekova
Nanomaterials 2024, 14(23), 1942; https://doi.org/10.3390/nano14231942 - 3 Dec 2024
Cited by 2 | Viewed by 1188
Abstract
In this work, the simple fabrication of a new superhydrophobic magnetic sponge based on CNTs, NiFe2O4 nanoparticles, and PDMS was investigated. CNTs were synthesized by chemical vapor deposition (CVD) on a nickel ferrite catalyst supported on aluminum oxide (NiFe2 [...] Read more.
In this work, the simple fabrication of a new superhydrophobic magnetic sponge based on CNTs, NiFe2O4 nanoparticles, and PDMS was investigated. CNTs were synthesized by chemical vapor deposition (CVD) on a nickel ferrite catalyst supported on aluminum oxide (NiFe2O4/Al2O3). The synthesis of nickel ferrite (NiFe) was accomplished using the sol–gel method, yielding magnetic nanoparticles (43 Am2kg−1, coercivity of 93 Oe, 21–29 nm). A new superhydrophobic magnetic PU/CNT/NiFe2O4/PDMS sponge was fabricated using a polyurethane (PU) sponge, CNTs, NiFe2O4 nanoparticles, and polydimethylsiloxane (PDMS) through the immersion coating method. The new PU/CNT/NiFe2O4/PDMS sponge exhibits excellent superhydrophobic/oleophilic/mechanical properties and water repellency (water absorption rate of 0.4%) while having good absorption of oil, olive oil, and organic liquids of different densities (absorption capacity of 21.38 to 44.83 g/g), excellent separation efficiency (up to 99.81%), the ability to be reused for removing oil and organic solvents for more than 10 cycles, and easy control and separation from water using a magnet. The new PU/CNT/NiFe2O4/PDMS sponge is a promising candidate as a reusable sorbent for collecting oil and organic pollutants and can also be used as a hydrophobic filter due to its excellent mechanical properties. Full article
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