Results 41 to 50 of about 3,174 (219)

Nanostructured titanium dioxide-based photocatalysts for self-cleaning concrete: аssessment of effects of phase composition on photocatalytic activity of TiO2 [PDF]

Нанотехнологии в строительстве
Introduction. Currently, the development of photocatalytically active cement-based materials with self-cleaning properties is a promising area of building materials science.
Artemy S. Balykov, Denis B. Chugunov, Vladimir M. Kyashkin, Natalia S. Davydova   +3 more
doaj   +1 more source

Raman Line Scan Analyses and a New Hypothesis for the Formation of Anatase‐Hosting Microbialites: Study of the Stromatolites From Saint‐Jean‐de‐la‐Rivière, Cotentin, France

Journal of Raman Spectroscopy, EarlyView.
Micrometer analysis of millimeter lines of Raman spectra concludes in the association of anatase and graphitized organic matter (graphogen). The photosynthetic microorganisms at the origin of the microbialites produce O2, which is transformed by TiO2 into reactive species that, in turn, decompose the organic matter of the microorganisms. ABSTRACT Raman
Marie‐Paule Bassez
wiley   +1 more source

Unveiling the synergistic role of anatase/brookite homojunctions in TiO2 mixed phases on the enhanced photocatalytic degradation of paracetamol under simulated solar light and the formation of CO2.− radical ion

Applied Surface Science Advances
Mixed-phase TiO₂ systems offer unique opportunities for enhancing photocatalytic performance via interpolymorph junctions (homojunctions). While anatase/rutile interfaces have been extensively studied, anatase/brookite junctions remain comparatively ...
Nicola Blangetti, Francesca S. Freyria, Maela Manzoli, Paola Rivolo, Alessandro Piovano, Hamideh Darjazi, Nicoletta Ditaranto, Barbara Patrizi, Sandra Doria, Barbara Bonelli   +9 more
doaj   +1 more source

Laser‐Induced‐Structural Transformation in Ti3CNTx MXene Monitored by Raman Spectroscopy with DFT Insight

Small, EarlyView.
A multi‐wavelength Raman study of microwave‐assisted hydrothermal Ti3CNTx MXene, supported by theoretical calculations, identifies laser‐power thresholds and evaluates its ambient‐condition stability. ABSTRACT MXenes are emerging 2D nanomaterials that have attracted growing attention for their highly tunable atomic structure, composition, and surface ...
Subrata Ghosh, Narayan N. Som, Muhammad Abiyyu Kenichi Purbayanto, Dorota Moszczyńska, Anna Wójcik, Carlo S. Casari, Agnieszka Maria Jastrzębska, Madhurya Chandel   +7 more
wiley   +1 more source

Engineering Nanoscale Frontiers: Valve Metal Oxide Nanostructures From Fundamentals to Multifunctional Biomedical Applications

The Chemical Record, EarlyView.
Valve metal oxide nanostructures such as TiO2, Ta2O5, Nb2O5, ZrO2, and HfO2 are emerging as versatile biomedical platforms due to their tunable surface properties, exceptional stability, and inherent biocompatibility. This review highlights their synthesis, physicochemical properties, and biological interactions, addressing their roles in advanced ...
Nina Kummer, Désirée Gül, İdris Sargin, Mustafa Dolaz, Dzmitry Shcharbin, Shirley K. Knauer, Burcu Önal Acet, Emrah Dikici, Mingyuan Gao, Mehmet Odabaşı, Ömür Acet, Roland H. Stauber   +11 more
wiley   +1 more source

Estudo das propriedades estruturais, morfológicas e ópticas de filmes de TiO2 eletrossintetizados catodicamente em função dos parâmetros de síntese [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em FísicaFilmes finos de TiO2, um óxido semicondutor, são largamente utilizados em diversos tipos de dispositivos ...
Silva, Nara Rubiano da
core  

Effect of time of hydrothermal heat treatment on mesoporous nano-TiO2 synthesis

Cerâmica, 2021
Mesoporous TiO2 nanoparticles were synthesized by the sol-gel method and using hydrothermal treatment at 200 ºC during different time intervals, which allowed the evaluation of the time or the treatment on the structural, morphological, and optical ...
L. M. Santos, D. J. R. da Silva, M. R. C. Santos, A. E. H. Machado   +3 more
doaj   +1 more source

Impact‐diagnostic criteria for use in confirming a meteorite impact origin of terrestrial geological structures: Recommendations by the Impact Cratering Committee of the Meteoritical Society

Meteoritics &Planetary Science, EarlyView.
Abstract The framework of the Impact Cratering Committee (ICC) of the Meteoritical Society was approved in 2020, with the first committee members appointed in 2023. The ICC has a mandate to (1) approve, maintain, and update a database of confirmed terrestrial meteorite impact structures, (2) define and regularly update the criteria used for ...
A. J. Cavosie, S. Alwmark, D. Baratoux, G. Consolmagno, L. Ferrière, S. Goderis, N. Hauser, T. Kenkmann, C. Koeberl, G. R. Osinski, A. E. Pickersgill, M. Schönbächler   +11 more
wiley   +1 more source

Brookite versus anatase TiO2 photocatalysts: Phase transformations and photocatalytic activities

, 2013
Titanium dioxide nanoparticles consisting of pure anatase, anatase-rich, brookite-rich, and pure brookite modifications were synthesized and characterized by X-ray diffraction, field emission-scanning electron microscopy and nitrogen adsorption.
Robben, Lars, Kandiel, Tarek A., Alkaim, Ayad, Bahnemann, Detlef W.   +3 more
core   +2 more sources

Chemical analysis of extracting transition metal oxides from polymetallic ore by sulphate process

EPJ Web of Conferences, 2017
In this research work we attempt to improve the purity of polymetallic ores in Mongolia whilst developing practical applications of its refinement processes and this paper presents the results of chemical research of extracting transition metal titanium ...
Enkh-Uyanga Otgon-Uul, Munkhtsetseg Baatar, Urangoo Urtnasan, Tserendulam Enkhtur, Agiimaa Davaadorj   +4 more
doaj   +1 more source