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Progress in Nanomaterials for Pollutant Removal

A special issue of Molecules (ISSN 1420-3049).

Deadline for manuscript submissions: 30 July 2026 | Viewed by 957

Special Issue Editor

Special Issue Information

Dear Colleagues,

Water is essential for the survival of all living things and plays a role in agricultural purposes. Nevertheless, the discharge of untreated industrial effluent into streams and lakes threatens ecosystems and renders the water unsuitable for daily use for various purposes. Therefore, industrial effluents must be treated before they are discharged into natural water bodies. Consequently, nanomaterials are essential for the removal of industrial effluents, such as dye molecules, nuclear waste, pharmaceutical waste, heavy metal ions, pesticides, and other pollutants, due to their large surface area, unique morphologies, and surface-charged materials, whether positive or negative. As a result, environmental researchers engaged in the synthesis of nanomaterials such as LDHs, MOFs, COFs, metal oxides, xerogels, aerogels, CNTs, porous carbons, etc., using economical ways that may effectively remove such pollutants. Notably, these nanomaterials are rich in surface functional groups and have a high surface area and surface charge, demonstrating considerable adsorption capacity, outstanding removal efficiency, and remarkable reusability. As a result, nanomaterials with a distinct morphology and excellent surface properties might play a key role in water treatment.

The proposed Special Issue will focus on but is not limited to the synthesis of nanostructured materials, physicochemical characteristics, batch adsorption studies, adsorption mechanisms, and the removal of single or binary mixtures from water. We welcome authors to submit research focusing on the application of innovative nanostructured materials in water purification technologies.

Dr. Sriram Ganesan
Guest Editor

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Keywords

  • nanomaterials
  • high surface area
  • surface modification
  • high removal efficiency
  • emerging contaminants
  • single and/or binary mixture
  • adsorption
  • degradation

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Published Papers (1 paper)

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Research

30 pages, 17342 KB  
Article
Design and Synthesis of Dy2TmSbO7/BiHoO3 Heterojunction: The Mechanism and Application for Photocatalytic Degradation of Sulphamethoxypyridazine
by Jingfei Luan, Minghe Ma, Liang Hao, Hengchang Zeng and Anan Liu
Molecules 2026, 31(1), 24; https://doi.org/10.3390/molecules31010024 - 22 Dec 2025
Viewed by 552
Abstract
A novel Z-scheme Dy2TmSbO7/BiHoO3 heterostructure photocatalyst was synthesized with the ultrasound-assisted solvothermal method. The Dy2TmSbO7/BiHoO3 heterojunction photocatalyst (DBHP) reflected wonderful separation efficiency of photogenerated electrons and photogenerated holes owing to the efficient direct [...] Read more.
A novel Z-scheme Dy2TmSbO7/BiHoO3 heterostructure photocatalyst was synthesized with the ultrasound-assisted solvothermal method. The Dy2TmSbO7/BiHoO3 heterojunction photocatalyst (DBHP) reflected wonderful separation efficiency of photogenerated electrons and photogenerated holes owing to the efficient direct Z-scheme heterojunction structure characteristic. The lattice parameter and the bandgap energy of the Dy2TmSbO7 were 10.52419 Å and 2.58 eV, simultaneously, the lattice parameter and the bandgap energy of the BiHoO3 were 5.42365 Å and 2.25 eV, additionally, the bandgap energy of the DBHP was 2.32 eV. Above results indicated that DBHP, Dy2TmSbO7 or BiHoO3 possessed an excellent ability for absorbing visible light energy, therefore, DBHP, Dy2TmSbO7 or BiHoO3 owned superior photocatalytic activity for degrading the sulphamethoxypyridazine (SMP) under visible light irradiation. The removal rate of the SMP after visible light irradiation of 135 min with the DBHP was 99.47% for degrading the SMP during the photocatalytic degradation (PADA) process, correspondingly, the removal rate of the total organic carbon (TOC) concentration after visible light irradiation of 135 min with the DBHP was 98.02% for degrading the SMP during the PADA process. The removal rate of the SMP after visible light irradiation of 135 min with the DBHP was 1.15 times, 1.29 times or 2.60 times that with Dy2TmSbO7, BiHoO3 or nitrogen-doped TiO2 (N-T). Therefore, the DBHP displayed higher photocatalytic activity for degrading the SMP under visible light irradiation compared with Dy2TmSbO7, BiHoO3 or N-T. Specifically, the mineralization rate for removing the TOC concentration during the PADA process of the SMP with the DBHP was 1.18 times, 1.32 times or 2.79 times that with Dy2TmSbO7, BiHoO3 or N-T. In addition, the stability and reusability of the DBHP were systematically evaluated, confirming that the DBHP owned potential applicability for degrading the antibiotic pollutant, which derived from the practical industrial wastewater. Trapping radicals experiments and the electron paramagnetic resonance measurement experiments were conducted for identifying the reactive radicals, such as the hydroxyl radicals (•OH), the superoxide anions (•O2) and the photogenerated holes (h+), which were generated with the DBHP for degrading the SMP during the PADA process under visible light irradiation, as a result, the •O2 possessed the maximal oxidative capability compared with the •OH or the h+. Above results indicated the degradation mechanism and the degradation pathways which were related to the SMP. In conclusion, this study makes a significant contribution for the development of the efficient Z-scheme heterostructure photocatalysts and provides a key opinion to the development of the sustainable remediation method with the view of mitigating the antibiotic pollution. Full article
(This article belongs to the Special Issue Progress in Nanomaterials for Pollutant Removal)
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