Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Antonio Lenito Soares"'
Publikováno v:
Journal of Molecular Structure. 1184:72-78
In the positional disordered unit cell of the natural bornite (Cu5FeS4) there are 10 copper and 2 iron atoms in the asymmetric unit. The positions M(4) and M(5) occupied by the iron atoms and the other ten by copper atoms represent the arrangement th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bee4bb5f58d841c7046303307322d45
https://doi.org/10.1016/j.molstruc.2019.02.026
https://doi.org/10.1016/j.molstruc.2019.02.026
Autor:
Matheus Campos Quintão, Mirele B. Pinto, Hélio A. Duarte, Antonio Lenito Soares, Heitor A. De Abreu
Publikováno v:
The Journal of Physical Chemistry C. 122:6618-6628
Niobium pentoxide (Nb2O5), also known as niobia, has been applied in several areas among others in heterogeneous catalysis. This is due to both its high acidity (Bronsted acid and Lewis acid sites) and its Lewis acid sites tolerant to water. The stru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26533c73919650a3a739b3695cf4657b
https://doi.org/10.1021/acs.jpcc.7b11972
https://doi.org/10.1021/acs.jpcc.7b11972
Publikováno v:
CrystEngComm. 19:3078-3084
The promising application of CuS (covellite) nanoparticles in the biomedical field has motivated the present work with the aim of studying the stability of stoichiometric CuS surfaces and nanoparticles (NPs) under different conditions of pressure (p)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c9c6a6eb435f4547f2db973671b4c56
https://doi.org/10.1039/c7ce00203c
https://doi.org/10.1039/c7ce00203c
Autor:
Egon Campos dos Santos, Heitor A. De Abreu, Hélio A. Duarte, Ángel Morales-García, Antonio Lenito Soares
Publikováno v:
ChemistrySelect. 1:2730-2741
Covellite (CuS) is a transition metal chalcogenide mineral, its structure can be described as a succession of planar CuS layers and Cu2S2 double layers. The success of the synthesis of the covellite nanoparticles enhanced their properties with potent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ca4cd09ca5a39c0bc951e401cbbabf
https://doi.org/10.1002/slct.201600422
https://doi.org/10.1002/slct.201600422
Autor:
Hélio A. Duarte, Andy Mella Orellana, Mirele B. Pinto, Heitor A. De Abreu, Antonio Lenito Soares
Publikováno v:
The journal of physical chemistry. A. 121(12)
Different polymorphs of Nb2O5 can be obtained depending on the pressure and temperature of calcination leading to different catalytic properties. Two polymorphs of niobia, T-Nb2O5 and B-Nb2O5, have been investigated by means of density functional/pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e93b91f672038205a060881d8d17447
https://pubmed.ncbi.nlm.nih.gov/28291341
https://pubmed.ncbi.nlm.nih.gov/28291341
Autor:
Weberton R. do Carmo, Marcus V. N. de Souza, Renata Diniz, Juliana P. Vasconcelos, Antonio Lenito Soares Junior, Adriana F. Faria, Marcone Augusto Leal de Oliveira, Luiza F. Marcellos
Publikováno v:
Journal of the Brazilian Chemical Society, Volume: 22, Issue: 5, Pages: 867-874, Published: MAY 2011
Journal of the Brazilian Chemical Society v.22 n.5 2011
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society v.22 n.5 2011
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
An alternative method for ethambutol (ETB) determination by UV spectrophotometry in pharmaceutical formulations using ETB complexation with Cu(II) was optimized employing a 3² full experimental design having Cu(II) and aqueous acetic acid/sodium ace
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfcb9b5ac6b001eb76b195d544f1591a
https://doi.org/10.1590/s0103-50532011000500008
https://doi.org/10.1590/s0103-50532011000500008
Autor:
Renata Diniz, Antonio Lenito Soares Junior, Tatiana das Chagas Almeida, Flávia C. Machado, Luiz Fernando C. de Oliveira, Maria Irene Yoshida, Laís F. Castro
Publikováno v:
Vibrational Spectroscopy. 54:112-117
In this work are described the crystal structures of two alkaline earth salts as well the vibrational spectra of three alkaline earth salts of 3,5-bis-(dicyanomethylene)cyclopentane-1,2,4-trionate (known as croconate violet – CV2−). The compounds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb8640f5eab59646b38d5b78d50c3e04
https://doi.org/10.1016/j.vibspec.2010.04.008
https://doi.org/10.1016/j.vibspec.2010.04.008
Autor:
Hélio A. Duarte, Ángel Morales-García, Heitor A. De Abreu, Egon Campos dos Santos, Antonio Lenito Soares
Publikováno v:
The journal of physical chemistry. A. 118(31)
Covellite (CuS) is an important mineral sulfide that can be used in many technological applications. It has a simple formula but a complex structure consisting of alternating layers of planar CuS3 triangles and CuS4 tetrahedrons with S-S bonds. Accur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9af7be5b7444c61a521f57c5f699731
https://pubmed.ncbi.nlm.nih.gov/24483728
https://pubmed.ncbi.nlm.nih.gov/24483728
Autor:
Hélio A. Duarte, Thomas Heine, Heitor A. De Abreu, Ángel Morales-García, Antonio Lenito Soares, Egon Campos dos Santos
Publikováno v:
2D Materials. 4:015041
Covellite is a metallic layered mineral with rather strong interlayer interaction. Recently, synthesis of covellite nanosheets of 3.2 nm thickness was reported (Du et al 2012 Nat. Commun. 3 1177), which raises the question: 'What is the thinnest poss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bf57a0d162b2d7d430a1a36f48ec28a
https://doi.org/10.1088/2053-1583/aa516e
https://doi.org/10.1088/2053-1583/aa516e
Autor:
Heitor A. De Abreu, Luiz Fernando C. de Oliveira, Antonio Lenito Soares Junior, Mauro C. C. Ribeiro, Renata Diniz, Lívian R.V. De Sá, Alexandre A. Leitão
Publikováno v:
The journal of physical chemistry. A. 113(23)
The present work describes the crystal structure, vibrational spectra, and theoretical calculations of ammonium salts of 3,5-bis-(dicyanomethylene)cyclopentane-1,2,4-trionate, (NH(4))(2)(C(11)N(4)O(3)) [(NH(4))(2)CV], also known as ammonium croconate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c006cd5edbd6da55300cb823d10c02a3
https://pubmed.ncbi.nlm.nih.gov/19441805
https://pubmed.ncbi.nlm.nih.gov/19441805