RSS 1.0Artigos - Química Analítica - IQ
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Photoelectrochemical hydrogen generation at hybrid rGO-Sn3O4/SnO2 nanocomposite
da Costa Romeiro, Fernanda
; Martins, Alysson Stefan ; Costa e Silva, Beatriz ; Zanoni, Maria Valnice Boldrin ; Orlandi, Marcelo Ornaghi (Journal of Applied Electrochemistry, 2022) [Artigo]
This study investigates the photoelectrocatalytic water splitting at Sn3O4 and ternary rGO-Sn3O4/SnO2 heterostructure nanocomposite materials. The nanocomposite exhibited superior performance compared to Sn3O4, a result ... -
Using a disposable platform based on reduced graphene oxide, iron nanoparticles and molecularly imprinted polymer for voltammetric determination of vanillic acid in fruit peels
Buffon, Edervaldo; Stradiotto, Nelson Ramos (Food Chemistry, 2022) [Artigo]
This work reports the development and application of a disposable electrochemical platform for vanillic acid (VA) detection using screen-printed electrode modified with reduced graphene oxide, iron nanoparticles and ... -
Modulating the photoelectrocatalytic conversion of CO2 to methanol and/or H2O to hydrogen at a phosphorene modified Ti/TiO2 electrode
Sayao, Fabiana Avolio; ; Zanoni, Maria Valnice Boldrin ; (Journal of Materials Chemistry C, 2022) [Artigo]
The effect of phosphorene as a co-catalyst for Ti/TiO2 nanotube electrodes on CO2 reduction to methanol, and water splitting was investigated. The electrode was prepared by using poly-dopamine as an anchoring agent to ... -
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor
Martins, Alysson Stefan; ; ; ; Boldrin Zanoni, Maria Valnice (Journal of Electroanalytical Chemistry, 2022) [Artigo]
The efficient removal of organic micropollutants remains a major challenge for conventional water treatment technology. Photocatalysis, while effective, has not been widely adopted due to cost and implementation challenges. ... -
Lead signal enhancement in anodic stripping voltammetry using graphene oxide and pectin as electrode modifying agents for biofuel analysis
da Conceição, Emanuela; Buffon, Edervaldo ; Stradiotto, Nelson Ramos (Fuel, 2022) [Artigo]
This work reports the development of a composite material containing graphene oxide and pectin (GO-PEC) to increase the lead signal during the analysis of biofuels through differential pulse anodic stripping voltammetry. ... -
Accelerated Aging Ultraviolet of a PET Nonwoven Geotextile and Thermoanalytical Evaluation
; ; ; ; Ribeiro, Clovis Augusto; (Materials, 2022) [Artigo]
Nonwoven geotextiles are geosynthetic products that are highly susceptible to ultraviolet degradation because light can reach a large area of the material due to its fiber arrangement. Even with additives, which delay the ... -
Thermal and viscosity characterization of two asphalt emulsions
; ; ; ; ; Ribeiro, Clóvis Augusto (Journal of Thermal Analysis and Calorimetry, 2022) [Artigo]
Asphalt emulsion is a versatile product that can be used for different waterproofing applications in civil construction and highway constructions. Emulsions also can be used in soil stabilization or applied to the surface ... -
Effect of the interlamellar anion on CuMgFe-LDH in solar photo-Fenton and Fenton-like degradation of the anticancer drug 5-fluorouracil
Costa-Serge, Nayara de M.; Lima Gonçalves, Rosembergue G. ; Ramirez-Ubillus, Manuel A. ; ; Hammer, Peter ; ; Pupo Nogueira, Raquel F. (Applied Catalysis B: Environmental, 2022) [Artigo]
The influence of the interlamellar anion in Layered Double Hydroxide was investigated for the first time in Fenton-like and solar photo-Fenton processes for the degradation of the anticancer drug 5-fluorouracil (5-FU). ... -
Recent achievements in photoelectrocatalytic degradation of pesticides
Zanoni, Maria Valnice Boldrin; Irikura, Kallyni ; Perini, João Angelo Lima ; Bessegato, Guilherme G. ; ; (Current Opinion in Electrochemistry, 2022) [Resenha]
This review summarizes recent advances in photoelectrocatalysis of pesticides, involving fundamentals, the preparation of photoanodes, and their application in the degradation of pesticides from distinct types of water. ... -
Peroxydisulfate activation by CuO pellets in a fixed-bed column, operating mode and assessments for antibiotics degradation and urban wastewater disinfection
; de Melo Costa Serge, Nayara; Nogueira, Raquel Fernandes Pupo ; ; (Environmental Science and Pollution Research, 2022) [Artigo]
A fixed-bed column packed with copper oxide pellets (FBC-CuO) combined with peroxydisulfate (PDS) as a primary oxidant was assessed as an option for simultaneously wastewater decontamination (antibiotics) and disinfection ... -
Copper-containing magnetite supported on natural clay as a catalyst for heterogeneous photo-Fenton degradation of antibiotics in WWTP effluent
De Jesus, Jany H.F.; Lima, Karla V.L. ; Pupo Nogueira, Raquel F. (Journal of Environmental Chemical Engineering, 2022) [Artigo]
The use of natural clay as a support for magnetite and copper-containing magnetite was evaluated for heterogeneous Fenton/photo-Fenton degradation of trimethoprim and sulfamethoxazole. In Fenton experiments, the incorporation ... -
Sugarcane bagasse biochar pellets for removal of caffeine, norfloxacin, and ciprofloxacin in aqueous samples
Fonsêca, Mateus Cottorello; Marasco, César Augusto Júnior ; Dos Santos Dias, Diógenes ; Da Silva, João Pedro ; Lamarca, Rafaela Silva ; Ribeiro, Clóvis Augusto ; Pires, Lorena Oliveira ; De Lima Gomes, Paulo Clairmont Feitosa (Ecletica Quimica, 2022) [Artigo]
This work investigates the physicochemical properties of a biochar obtained from sugarcane bagasse by torrefaction at four different temperatures (260, 270, 280, and 290 °C), without chemical or physical activation. The ... -
Modification of Ti/TiO2NT with ZrO2 nanoparticles to enhance photoelectrocatalytic performance in removal of dibutyl phthalate
Hyppólito, Marina Paz; Perini, João Angelo Lima ; da Silva, Bianca Ferreira ; Jorge, Sônia Maria Alves ; Zanoni, Maria Valnice Boldrin (Environmental Science and Pollution Research, 2022) [Artigo]
This work shows that ZrO2, used as a modifier of TiO2, can be highly effective as a co-catalyst in the photoelectrocatalytic degradation of dibutyl phthalate (DBP). The monoclinic phase of ZrO2 was easily obtained by ... -
Non-toxic nature of nano-biosorbents as a positive approach toward green environment
Khan, Sabir; Zeb, Shakeel ; ; ; ; ; ; ; Vila, Javier Lobaton ; et al. (Nano-biosorbents for Decontamination of Water, Air, and Soil Pollution, 2022) [Capítulo de livro]
The release of toxic substances like heavy metals, dyes, emerging and classical contaminants released from different industries are annoying due to their toxicity and persistent nature. This chapter describes applications ... -
Enzymeless glucose sensor based on disposable Ecoflex®/graphite thermoplastic composite substrate modified with Au@GQDs
; ; ; Maciel, Cristiane Carla; ; (Sensors and Actuators Reports, 2022) [Artigo]
There is an increasing demand for robust, affordable, and sensitive analytical devices for clinical diagnostics. Herein, we describe a simple route to produce biodegradable and disposable thermoplastic composite electrodes ... -
Evaluation of the efficiency of a Venturi scrubber in particulate matter collection smaller than 2.5 µm emitted by biomass burning
Costa, Maria Angélica Martins; da Silva, Bruno Menezes ; de Almeida, Sâmilla Gabriella Coelho ; ; ; Cardoso, Arnaldo Alves ; Dussán, Kelly Johana (Environmental Science and Pollution Research, 2022) [Artigo]
Energy demand has increased worldwide, and biomass burning is one of the solutions most used by industries, especially in countries that have a great potential in agriculture, such as Brazil. However, these energy sources ... -
Determination of 5-hydroxymethylfurfural using an electropolymerized molecularly imprinted polymer in combination with Salle
Francisco, Karen C.A.; ; ; Cardoso, Arnaldo A. ; (Talanta, 2022) [Artigo]
Coffee, a beverage with a complex chemical composition, is appreciated for the sensory experience of its taste and aroma. The compound 5-(hydroxymethyl)-2-furfural (HMF) is essential for sensory characterization of the ... -
Photo-Fenton degradation of sulfamethoxazole using MIL-53(Fe) under UVA LED irradiation and natural sunlight
Ortega-Moreno, Gabriela A.; Ayala-Durán, Saidy C. ; ; ; ; Nogueira, Raquel F. Pupo (Journal of Environmental Chemical Engineering, 2022) [Artigo]
The MOF MIL-53(Fe) was synthesized, activated and evaluated in photo-Fenton reactions assisted by UVA LED irradiation and natural sunlight using the antibiotic sulfamethoxazole (SMX) as a degradation target molecule. A 23 ... -
Voltammetric determination of sulfur in biodiesel microemulsion using a silver solid amalgam electrode
Modenes Junior, Marco Antonio; Beluomini, Maisa Azevedo ; Stradiotto, Nelson Ramos (Analytical Methods, 2022) [Artigo]
Monitoring sulfur in biodiesel is of fundamental importance because even in low concentrations, it can harm the operation of the engine parts and increase the emission of toxic gases and particulate material. Hence, a ... -
Synthesis and evaluation of hollow porous molecularly imprinted polymer for selective determination of tetracycline
Pupin, Rafael Rovatti; Sotomayor, Maria Del Pilar Taboada (Journal Of Materials Science, 2022) [Artigo]
A novel hollow porous molecularly imprinted polymer (HMIP) was synthesized for tetracycline determination in different matrices and the adsorption efficiency of this material was compared with the widely applied traditional ...