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In the present study, three compositions of W-doped titania nano-photocatalyst are synthesized via the sol-gel method. The powders obtained were characterized by X-ray diffraction, Raman spectroscopy and UV-visible diffuse reflectance spectroscopy. The photocatalytic performances of the different photocatalysts are tested with respect to the degradation of Diuron in water solutions under simulated solar light and visible light irradiation. The WTiO catalyst exhibits better photoactivity than the pure TiO even under simulated solar light and visible light. This improvement in activity was attributed to photoelectron/hole separation efficiency.
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http://dx.doi.org/10.2166/wst.2016.472 | DOI Listing |
Environ Sci Technol
September 2025
Science of Life Laboratory, Department of Environmental Science, Stockholm University, 114 18 Stockholm, Sweden.
There is an increasing need for new approach methodologies (NAMs) to generate relevant ecotoxicological data. This study demonstrates the strengths of calcein AM, a highly sensitive fluorescent stain for esterase activity, in an automated image-based multiwell plate assay for detecting sublethal effects in . Sample processing and feeding conditions were optimized to ensure a uniform dye distribution.
View Article and Find Full Text PDFJ Environ Sci (China)
December 2025
Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
The sensitivity of phytoplankton growth to chemical stressors influences the composition and function of phytoplankton communities. In this study, we compared the growth, photosynthetic, and metabolic responses of the cyanobacterium Microcystis aeruginosa FACHB-469 and the green alga Raphidocelis subcapitata FACHB-271 to herbicide diuron. The 5-day growth inhibition test showed the M.
View Article and Find Full Text PDFChemosphere
August 2025
Research and Technology Institute, Aracaju, SE 49032-490 Brazil; Industrial Biotechnology Graduate Program, Tiradentes University, Aracaju, SE 49032-490, Brazil. Electronic address:
Diuron is a common herbicide for major crops, but its environmental persistence threatens ecosystems and human health. This study presents a hybrid treatment strategy that combines photoelectrochemical oxidation (PECO) and subsequent biodegradation as a sustainable alternative for diuron remediation. A novel laser-fabricated anode composed of Ti/RuO-SbO-TiO was developed and employed in the PECO process, offering enhanced electron transfer efficiency and stability.
View Article and Find Full Text PDFJ Environ Manage
September 2025
CIMA, Centre of Marine and Environmental Research/ARNET - Infrastructure Network in Aquatic Research, Universidade do Algarve, Campus de Gambelas, 8000-139, Faro, Portugal. Electronic address:
Wastewater treatment plants play a key role in the release of pharmaceuticals and other contaminants into the aquatic environment, causing negative effects on the ecosystems of receiving water bodies. This work aimed to assess the removal efficiency of real loads of these contaminants by wastewater-native microalgae consortia acting on treated wastewater previously subjected to secondary treatment. Wastewater sampling and removal efficiency experiments were conducted over 1 year at three different sampling points.
View Article and Find Full Text PDFMar Environ Res
September 2025
Environmental Dynamics Section, Department of Science and Environment, Roskilde University, Universitetsvej 1, 4000, Roskilde, Denmark. Electronic address:
Global decline of seagrasses is directly linked with anthropogenic activities. One of the increasing threats, is marine pollution with a wide range of chemically synthesized substances. Here, we investigated effects of the commonly used PFAS-herbicide, diflufenican (DFF), on Zostera marina L.
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