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Nitrogen doped titania over reduced form of graphene oxide (N-TiO₂/rGO) catalysts were synthesized by adopting single step hydrothermal route. All the prepared photocatalysts were thoroughly characterized by using different analytical tools such as XRD, Raman, UV-DRS, FE-SEM and HRTEM. The photocatalytic activities of bare and composite catalysts were evaluated towards the photocatalytic decolourisation/degradation of Methylene blue dye (MB) and Metronidazole antibiotic (MTZ) under visible electromagnetic radiation. Among all the synthesized catalysts, N-TiO₂/rGO composite catalyst showed the highest decolourisation/degradation activity towards both the dye and the antibiotic. The most active catalyst was also tested under UV and solar light irradiations which showed promising results. The stability of the most active catalyst (N-TiO₂/rGO) was examined by recyclability test. The possible photocatalytic mechanism was proposed for the composite catalyst.
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http://dx.doi.org/10.1166/jnn.2021.19122 | DOI Listing |
Oecologia
September 2025
Department of Entomology and Plant Pathology, Auburn University, 301 Funchess Hall, Auburn, AL, 36849, USA.
Understanding changes to local communities brought about by biological invasions is important for conserving biodiversity and maintaining environmental stability. Scale insects (Hemiptera: Coccoidea) are a diverse group of insects well known for their invasion potential and ability to modify local abundance of multiple insect groups. Here, we tested how the presence of crape myrtle bark scale (Acanthococcus lagerstroemiae, CMBS), an invasive felt scale species, seasonally impacted local insect abundance, biodiversity, and community structure on crape myrtle trees.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing, 312000, China; Institute of Chemistry, Chinese Academy of Scien
Inspired by "the composition of catechol and amine groups in the adhesive proteins" of marine mussel and "brick-and-mortar" structure of nacre, we use polydopamine (PDA) as "mortar", graphene oxides (GO) nanosheets as "brick", and Pd ions as interfacial reinforcer, to fabricate nacre-like Pd enhanced PDA functionalized GO membranes (Pd@PDA/GO) with vacuum filtration-assisted assembly method. Meanwhile, in situ reduced Pd nanoclusters by PDA chains were well constrained within the resultant Pd@PDA/GO artificial nacre composites. Good interfacial adhesion with dense packing of the GO nanosheets was further confirmed with sub-nano level microstructure characterization by positron annihilation lifetime spectroscopy.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
Strategic Research Center for Smart Battery, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea. Electronic address:
Advancing impactful, economical, and durable Co-based bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) has been crucial in developing sustainable energy technologies. In this work, Co and CoN nanoparticles (NPs)-incorporated S, N-doped carbon catalysts (Co/CoN/SNC) were prepared via direct pyrolysis of the CoDATT complex, exhibiting high bifunctional electrocatalytic performance for ORR and OER. The complex precursor, CoDATT, was synthesized for the first time using diaminoterthiophene (DATT) and CoCl.
View Article and Find Full Text PDFRSC Adv
September 2025
Department of Chemical Engineering and Green Technology, Institute of Chemical Technology (ICT) Mumbai Maharashtra 400019 India
The sustainable synthesis of bio-based monomers from renewable biomass intermediates is a central goal in green chemistry and biorefinery innovation. This study introduces a synergistic catalytic-enzymatic strategy for the efficient and eco-friendly oxidation of 5-hydroxymethylfurfural (5-HMF) into 2,5-furandicarboxylic acid (FDCA), a key monomer for next-generation biodegradable plastics. The catalytic phase employed non-noble metal catalysts, MnO and Co-Mn supported on activated carbon (Co-Mn/AC), under mild batch reaction conditions at 90 °C.
View Article and Find Full Text PDFChem Sci
August 2025
State Key Laboratory of Polymer Science and Technology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 China
Poly(glycolic acid) (PGA) is one of the most widely used biodegradable polyesters, but its efficient valorization presents a long-standing challenge. Herein, we report the first facile PGA valorization strategy by utilizing epoxides to upcycle PGA into fused lactones under mild conditions (<100 °C), and subsequent copolymerization to produce copolyesters with wide potential tunability and enhanced performance. In the presence of epoxides and a chromium-based catalyst, PGA was efficiently transformed into fused lactones with a wide range of potential structural adjustability.
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