RSS 1.0Artigos - Química Analítica - IQ
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Professor Nelson Stradiotto, whose career has been marked by an effective contribution in the training of human resources for science, recently spoke with BrJAC
Stradiotto, Nelson Ramos
(Brazilian Journal of Analytical Chemistry, 2018) [Nota]
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Evidences of the Electrochemical Production of Sulfate Radicals at Cathodically Polarized TiO2 Nanotubes Electrodes
Bessegato, Guilherme G.; Zanoni, Maria Valnice Boldrin ; ; (Electrocatalysis, 2019) [Artigo]
This work presents a novel approach for cathodically polarized TiO2 nanotube electrodes in electrochemical advanced oxidation processes generating sulfate radicals. Although TiO2 do not offer electrochemical response at ... -
Ag/polydopamine-modified Ti/TiO2 nanotube arrays: A platform for enhanced CO2 photoelectroreduction to methanol
Perini, João Angelo Lima; Torquato, Lilian D. Moura ; Irikura, Kallyni ; Zanoni, Maria Valnice Boldrin (Journal of CO2 Utilization, 2019) [Artigo]
TiO2 nanotube (NT) arrays were modified with thin films of polydopamine (PDA) and Ag nanoparticles (NP) and were used as electron storage centers on a photoelectrode surface, in order to drive the reduction of CO2 to ... -
CO2 Reduction of Hybrid Cu2O–Cu/Gas Diffusion Layer Electrodes and their Integration in a Cu-based Photoelectrocatalytic Cell
de Brito, Juliana Ferreira; ; ; ; Boldrin Zanoni, Maria Valnice ; ; (ChemSusChem, 2019) [Artigo]
Cu2O/gas diffusion layer (GDL) electrodes prepared by electrodeposition were studied for the electrocatalytic reduction of CO2. The designed electrode was also tested in solar-light-induced CO2 conversion in combination ... -
Lornoxicam drug—A new study of thermal degradation under oxidative and pyrolysis conditions using the thermoanalytical techniques, DRX and LC-MS/MS
Carvalho, A. C.S.; Zangaro, G. A.C. ; Fernandes, R. P. ; Ekawa, B. ; Nascimento, A. L.C.S. ; Silva, B. F. ; ; ; Ionashiro, M. ; Caires, F. J. (Thermochimica Acta, 2019) [Artigo]
In the present work, the thermal behavior of Lornoxicam drug was studied under oxidizing (air) and pyrolysis (N2) atmospheres using simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), differential ... -
Immunosensor for Detection of the Textile Dye Disperse Orange 1 Based on Non-conventional Competitive Assay
Venturini Uliana, Carolina; Yamanaka, Hideko (Electroanalysis, 2019) [Artigo]
Textile dyes appear as an important class of compounds that has become a matter of public concern and a serious challenge for scientists and environmentalists due to their large-scale production and extensive application. ... -
1H NMR spectroscopy combined with multivariate data analysis for differentiation of Brazilian lager beer according to brewery
da Silva, Luis Augusto; ; Pezza, Helena Redigolo ; Pezza, Leonardo (European Food Research and Technology, 2019) [Artigo]
In this study, 1H NMR spectroscopy was used to classify samples of beer, considering three categories (Ambev, Heineken, and Grupo Petrópolis), employing chemometric methods: principal component analysis (PCA), partial least ... -
Electrochemical behavior of hexahydrofarnesol: A contaminant of aviation biokerosene
Buffon, Edervaldo; Stradiotto, Nelson Ramos (Journal of Electroanalytical Chemistry, 2019) [Artigo]
Hexahydrofarnesol is the main contaminant of the aviation biokerosene and its determination is of great interest to the aviation industry. In this work, the electrochemical behavior of this contaminant was investigated for ... -
Experimental design as a tool for parameter optimization of photoelectrocatalytic degradation of a textile dye
Bessegato, Guilherme G.; De Almeida, Lucio C. ; ; Zanoni, Maria Valnice Boldrin (Journal of Environmental Chemical Engineering, 2019) [Artigo]
Although several factors are found to influence the efficiency of photoelectrocatalytic oxidation, univariate optimization may not provide some relevant information, such as the existence of interaction between the factors. ... -
Electroanalytical sensing of dyes and colorants
; ; Zanoni, Maria Valnice Boldrin (Current Opinion in Electrochemistry, 2019) [Resenha]
Color is an important element of the final product of many industries, including the textile, leather, food, cosmetic, pharmaceutical, plastic, and fuel-marking industries. Dyes are complex organic substances with chromophore ... -
Efficient treatment of swimming pool water by photoelectrocatalytic ozonation: Inactivation of Candida parapsilosis and mineralization of Benzophenone-3 and urea
Kim, Joaquim Yuji Usukura; Bessegato, Guilherme G. ; de Souza, Bárbara C. ; da Silva, Josiel J. ; Zanoni, Maria Valnice Boldrin (Chemical Engineering Journal, 2019) [Artigo]
Swimming pool water (SPW) poses a potential risk to both human health and the environment due to the presence of contaminants of emerging concern (including components of sunscreens), pathogenic microorganisms, and eventually ... -
Brown rice authenticity evaluation by spark discharge-laser-induced breakdown spectroscopy
; ; Silva, Tiago Varão; ; Neto, José Anchieta Gomes ; ; Ferreira, Edilene Cristina (Food Chemistry, 2019) [Artigo]
Rice is the most consumed food worldwide, therefore its designation of origin (PDO) is very useful. Laser-induced breakdown spectroscopy (LIBS) is an interesting analytical technique for PDO certification, since it provides ... -
Cobalt(II) chloride complexes with some phosphine oxides: Compatibility between structural data for the solid complexes and their stability constants in acetone medium
Massabni, Antonio Carlos; Melios, Cristo Bladimiros (Ecletica Quimica, 2019) [Artigo]
Binary complexes of general formula CoCl2L2, where L = triphenylphosphine oxide (TPPO), benzyldiphenylphosphine oxide (BDPPO), dibenzylphenylphosphine oxide (DBPPO) and tribenzylphosphine oxide (TBPO) were considered ... -
Silver oxide nanoparticles in reduced graphene oxide modified electrode for amino acids electrocatalytic oxidation
Azevedo, Victor Hugo Romeiro; da Silva, José Luiz ; Stradiotto, Nelson Ramos (Journal of Electroanalytical Chemistry, 2019) [Artigo]
A glassy carbon electrode (GCE) modified with reduced graphene oxide (RGO) and silver oxide nanoparticles (AgNPs-RGO/GCE) was prepared for electrocatalytic oxidation of amino acids. The modified electrode surface was ... -
Comparative mutagenic activity of atmospheric particulate matter from limeira, stockholm, and kyoto
; ; ; ; ; ; ; Cardoso, Arnaldo A.; ; (Environmental and Molecular Mutagenesis, 2019) [Artigo]
Atmospheric particulate matter (PM) organic fractions from urban centers are frequently mutagenic for the Salmonella/microsome assay. This mutagenicity is related to both primary and secondary pollutants, and meteorological ... -
Green synthesis of fluorescent carbon dots for determination of glucose in biofluids using a paper platform
Rossini, Eduardo Luiz; Milani, Maria Izabel ; Pezza, Helena Redigolo (Talanta, 2019) [Artigo]
In this paper, we describe a novel carbon dot (CD)synthesized from citric acid and tyramine using a one-step microwave heating route. Under UV irradiation, the CD displayed blue emission that was quenched in the presence ... -
Electrochemical sensors based on molecularly imprinted polymer on nanostructured carbon materials: A review
Beluomini, Maísa Azevedo; da Silva, José Luiz ; de Sá, Acelino Cardoso ; Buffon, Edervaldo ; Pereira, Thulio César ; Stradiotto, Nelson Ramos (Journal of Electroanalytical Chemistry, 2019) [Resenha]
This review provides a comprehensive overview of recent research on electrochemical sensors based on molecularly imprinted polymers (MIPs) on nanostructured carbon material surfaces for electrochemical detection. The ... -
Turning carbon dioxide into fuel concomitantly to the photoanode-driven process of organic pollutant degradation by photoelectrocatalysis
Brito, Juliana Ferreira de; Perini, João Angelo Lima ; ; Zanoni, Maria Valnice Boldrin (Electrochimica Acta, 2019) [Artigo]
TiO 2 nanotubes (TiO 2 Nt) were modified with zirconium oxide and used as photoanode-driven to oxidize benzyl alcohol concomitantly to the reduction of carbon dioxide using a gas diffusion layer modified with cuprous oxide ... -
Combination of photoelectrocatalysis and ozonation as a good strategy for organics oxidation and decreased toxicity in oil-produced water
De Brito, Juliana Ferreira; Bessegato, Guilherme Garcia ; De Toledo E Souza, Pedro Rafael Fraga ; ; ; ; Zanoni, Maria Valnice Boldrin (Journal of the Electrochemical Society, 2019) [Artigo]
The oil-produced water generated during drilling of oil wells and gas extraction has been a cause for great concern since it contains a complex mixture of different organic and inorganic compounds, large amount of CO2, ... -
Moisture sorption of biochar from banana pseudostem fibers according to the pyrolysis temperature
Dias, Diogenes dos Santos; Faria, Flaviana Andrade ; Mattiolli, Lucas ; Capela, Marisa Veiga ; Capela, Jorge Manuel Vieira ; Crespi, Marisa Spirandeli ; Ribeiro, Clovis Augusto (Journal of Thermal Analysis and Calorimetry, 2019) [Artigo]
Biomass has been widely used mainly for power generation or fertilizer and can be used in natura, torrefied or pyrolyzed form. For application in the generation of energy or fertilizer, it is necessary the knowledge of ...