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Thanh-Danh Nguyen, Dinh Quang Khieu, Nguyen Hoang Tuan and Mita Dasog introduce the themed collection on nanomaterials for catalysis and sensing.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12120559 | PMC |
http://dx.doi.org/10.1039/d5na90028j | DOI Listing |
J Am Chem Soc
September 2025
Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, London WC1H 0AJ, U.K.
The exceptional performance of ceria (CeO) in catalysis and energy conversion is fundamentally governed by its defect chemistry, particularly oxygen vacancies. The formation of each oxygen vacancy (V) is assumed to be compensated by two localized electrons on cations (Ce). Here, we show by combining theory with experiment that while this 1 V: 2Ce ratio accounts for the global charge compensation, it does not apply at the local scale, particularly in nanoparticles.
View Article and Find Full Text PDFTop Curr Chem (Cham)
September 2025
Center for Advanced Materials Research, Research Institute of Sciences and Engineering, University of Sharjah, 27272, Sharjah, United Arab Emirates.
Controlling the size of gold nanoparticles (AuNPs) has been critical in diagnostics, biomolecular sensing, targeted therapy, wastewater treatment, catalysis, and sensing applications. Ultrasmall AuNPs (uAuNPs), with sizes Ranging from 2 to 5 nm, and gold nanoclusters (AuNCs), with sizes less than 2 nm, are often dealt with interchangeably in the literature, making it challenging to review them separately. Although they are grouped in our discussion, their chemical and physical properties differ significantly, partly due to their electronic properties.
View Article and Find Full Text PDFAdv Sci (Weinh)
September 2025
Department of Chemistry, Gyeongsang National University, Jinju, 52828, South Korea.
Patchy nanoparticles (NPs) enable directional interactions and dynamic structural transformations, yet controlling polymeric patch formation with high spatial precision remains a significant challenge. Here, a thermally driven approach is presented to forming polystyrene (PS) patches on low-curvature facets of anisotropic gold nanocubes (NCs) using a single polymer component. Heating in DMF above 90 °C triggers selective desorption of PS chains from high-curvature edges and vertices via Au─S bond dissociation, followed by migration and deposition into rounded patches on flat surfaces.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States.
Inorganic nanomaterial-based peroxidase mimics have recently emerged as promising alternatives to natural peroxidases for enhancing the detection sensitivity of bioassays, such as enzyme-linked immunosorbent assay (ELISA). Among them, magnetically active peroxidase mimics are particularly advantageous due to their ability to facilitate efficient separation and enrichment of target analytes. However, most reported magnetic peroxidase mimics suffer from limited catalytic efficiency and stability.
View Article and Find Full Text PDFBiomater Res
September 2025
Laboratory of Medical Imaging, The First People's Hospital of Zhenjiang, Zhenjiang 212001, P. R. China.
Mesoporous metal nanomaterials (MMNs) have gained interest in biomedicine for their unique properties, but their potential is limited by the predominance of spherical shapes and the neglect of morphological effects on biological activity, which hinders the reasonable evaluation of morphology-dependent enzyme-like activities and biological behaviors and its further biomedical applications. It is therefore imperative to find an effective and facile method to design and prepare MMNs with novel, well-defined morphologies. Herein, we fabricated 3 mesoporous platinum nanoenzymes including sphere, rod, and bipyramid topologies [Au@mesoPt sphere, Au@mesoPt rod, and Au@mesoPt bipyramid nanoparticles (NPs), respectively] via a facile atomic layer deposition method using gold NPs (Au NPs) as the templated cores and Pluronic F127 as a structure-directing agent.
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