Výsledky vyhledávání - "Rene R. Rocca"

CeO2–Nb2O5 photocatalysts for degradation of organic pollutants in water

Autor: Vanessa Aguiar Machado, Yvan J.O. Asencios, Elisabete Moreira Assaf, André E. Nogueira, Francielle Candian Firmino Marcos, Nathália Pereira Ferraz, Rene R. Rocca

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The photocatalytic properties of CeO2–Nb2O5 photocatalysts in heterogeneous photocatalysis (under ultraviolet and visible radiation) and in Fenton-like process were reported. Methylene blue dye (MB) and phenol (Ph) were used as models of pollutant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bff137000c7e5d3b2c4d2c79699607cc
https://doi.org/10.1007/s12598-019-01282-7

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Sol‐gel synthesis of strontium aluminate phosphor and its TL and OSL properties

Autor: Diego R.G. Tudela, Sonia Hatsue Tatumi, Katia Alessandra Gonçalves, Alvaro de Farias Soares, Rene R. Rocca

Publikováno v: Radiation Physics and Chemistry. 157:15-21

SrAl2O4 monoclinic and Sr12Al14O33 cubic phase nanocrystals were synthesized using sol-gel route and their morphology verified with X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) to confirm the crystallinity of the samples and the cry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e326ef215825456ebc8aeefbee06daa
https://doi.org/10.1016/j.radphyschem.2018.12.013

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Luminescence properties of SiO2:Tb nanocrystals obtained via sol-gel route and its applicability to environmental ionizing radiation dosimetry

Autor: J.C.R. Mittani, Rene R. Rocca, Diego R.G. Tudela, Lilia Coronato Courrol, Sonia Hatsue Tatumi

Publikováno v: Journal of Luminescence. 207:123-128

SiO2 was synthesized by sol-gel method and its luminescence investigated by emission spectroscopy and thermoluminescence (TL) techniques. A study on the influence of Tb on SiO2 was performed and a high increase of about 3000 times in TL intensity was

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc659e02db9bd67f13751f597a65140c
https://doi.org/10.1016/j.jlumin.2018.09.053

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Electron Spin Resonance and Thermoluminescence dating of shells and sediments from Sambaqui (shell mound) Santa Marta II, Brazil

Autor: LM Oliveira, S Sousa, Elio Angelo Tomarchio, Luigi Tranchina, Rene R. Rocca, Maurizio Marrale, Aldo Parlato, Shigueo Watanabe, Monise B. Gomes, B. Cortez, Maria Cristina D'Oca, Chubaci Jfd, Roseli Fernandes Gennari, Francesco D'Errico

In Tupi, the word Sambaqui means “mound of shells”. These archaeological sites are cultural vestiges left by the prehistoric occupation of the Brazilian coast from five to six thousand years ago. Mollusks, fishes, and other marine edible foods we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf8a880aa51b8bfa98a11106abe9cbce
http://hdl.handle.net/10447/509581

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Comparative studies on thermoluminescence glow curves of calcium oxide nanophosphor irradiated with various ionizing radiations

Autor: D. Prakash, K.R. Nagabhushana, Shigueo Watanabe, Sonia Hatsue Tatumi, Fouran Singh, Rene R. Rocca

Publikováno v: Journal of Alloys and Compounds. 735:1949-1954

Combustion synthesized nanocrystalline calcium oxide is irradiated with gamma rays, beta rays and swift heavy ions. TL glow curves of γ-irradiated samples show a prominent peak at 654 K with shoulder at 411 K. Whereas, β-irradiated samples exhibits

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6517e8b91dbd672620f6aa2a923ea593
https://doi.org/10.1016/j.jallcom.2017.11.148

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Study of morphological and luminescent properties (TL and OSL) of ZnO nanocrystals synthetized by coprecipitation method

Autor: Tatiana M. Mazzo, Sonia Hatsue Tatumi, Rene R. Rocca, Lilia Coronato Courrol, Alvaro de Farias Soares

Publikováno v: Journal of Luminescence. 186:135-143

In this work, ZnO nanocrystalline phosphorus were synthesized using the method of coprecipitation, subsequently different heat treatments at 900 and 1000 °C for 2 h and 1000 °C for 4 h were performed. Afterward, Thermoluminescence (TL) and Opticall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0bddee415a9ca2969b576e3b34ad77a5
https://doi.org/10.1016/j.jlumin.2017.02.028

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Photocatalytic activity of Nb heterostructure (NaNbO3/Na2Nb4O11) and Nb/ clay materials in the degradation of organic compounds

Autor: Marcella V. Quijo, André E. Nogueira, Francielle Candian Firmino Marcos, Rene R. Rocca, Elisabete Moreira Assaf, Yvan J.O. Asencios

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

In this article, Nb heterostructure-based (NaNbO3/Na2Nb4O11) and Nb/Clay-based materials were prepared, characterized and evaluated for the Rhodamine B (C28H31ClN2O3) photodegradation under UV radiation (253.7 nm). As far as this research understands

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d81ab408496a41bd7ad37d842b975b2

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Correlation study between OSL, TL and PL emissions of yellow calcite

Autor: A.de F. Soares, Rene R. Rocca, Lilia Coronato Courrol, Renata F. Barbosa, Sonia Hatsue Tatumi, J.M. Guilheiro

Publikováno v: Journal of Luminescence. 233:117881

The present study shows morphological characterization, experimental results, theoretical fittings of TL and OSL curves of yellow calcite and the correlation between these emissions. The OSL of the sample raises with dose and was theoretically decomp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::edb97a554e1c0a6701e4ecb375dfb9dc
https://doi.org/10.1016/j.jlumin.2020.117881

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