A5088602761- TiO2 Photocatalysis and Solar Cells
- Pigment Synthesis and Properties
- Advanced Photocatalysis Techniques
- Adsorption and biosorption for pollutant removal
- Catalytic Processes in Materials Science
- Mining and Gasification Technologies
- Copper-based nanomaterials and applications
- Industrial Engineering and Technologies
- Catalysis and Hydrodesulfurization Studies
- Gas Sensing Nanomaterials and Sensors
- Advanced oxidation water treatment
- Thermochemical Biomass Conversion Processes
- Environmental Sustainability and Education
- Municipal Solid Waste Management
- Subcritical and Supercritical Water Processes
- Minerals Flotation and Separation Techniques
- Parasitic Diseases Research and Treatment
- Dye analysis and toxicity
- Graphene and Nanomaterials Applications
- Environmental remediation with nanomaterials
- Nanomaterials for catalytic reactions
- Advanced Nanomaterials in Catalysis
- Heavy Metal Pollution Remediation
Universidade Estadual de Maringá
2015-2023
The removal of organic pollutants from water is a significant challenge in environmental remediation. In this study, the potential ZnO and Nb2O5 semiconductors with impregnation three percentages reduced graphene oxide (rGO) as efficient photocatalysts for degradation methylene blue (MB) dye aqueous solutions was investigated UV mini-reactor. heterostructures were synthesized by hydrothermal method characterized analytical techniques, such XRD, XPS, ATR-FTIR, Raman, TEM, N2 physisorption,...
Abstract Due to lead (Pb) being highly toxic and harmful living beings, several techniques have been studied aiming at its removal from contaminated water, with great emphasis on the adsorption process. In this sense, objective of study was investigate if chemical functionalization in biosorbents Moringa oleifera pods promotes greater potential process removing aqueous solution. To end, characterization biomass performed by energy dispersive X‐ray spectroscopy, Fourier transform infrared...
Abstract Here, the authors (i) discuss most prominent co‐catalyst for H 2 generation structured in form of Me‐TiO /MCM‐41 (Me: Ag, Co, Cu, Ni) based on structural, electronic, textural, morphological and optical characterization techniques, such as XRD, wide small angle, XPS, Fourier‐transform infrared spectroscopy, scanning electron microscopy, B.E.T., textural analysis, photoacoustic spectroscopy photoluminescence spectroscopy; (ii) evaluate difference hydrogen production two distinct...
The present work aims to evaluate the activity of semiconductor oxides (TiO2, Nb2O5 and ZnO) supported on NaA NaY zeolites, as well their synergistic effect Reactive Blue Dye (RB250) photodegradation process. Prior deposition, TiO2 particles size was reduced by ultrasonic scattering followed filtration. filtrate were used conduct experiments. semiconductors immobilized in concentrations 2.5, 5 10% (w w-1) photocatalytic tests performed at catalyst 1 2 g L-1. Moreover, catalysts characterized...
Abstract The photocatalyst composition affects the chemical–physical properties and directly impacts photocatalytic activity, both in hydrogen production degradation of organic contaminants. In this work, influence zeolitic structures NaA, NaY, ZSM‐5 combined with a 10% active phase, TiO 2 catalyst doped 1% copper, cobalt cocatalysts was tested to mineralize reactive blue dye (CI250) produce by photocatalysis under ultraviolet radiation. band gap energy affected mainly cocatalyst, while...
This study aims to evaluate the effect of grinding parameters applied TiO2 comminution, which forms a heterojunction anatase-rutile phases and reduces markedly size particle. material is well-knowm photocatalyst in environmental issues such as degradation synthetic dyes, mainly due large surface area oxidative radicals generations ability. The influence time, rotational speed solvent was investigated process. Catalysts were prepared by deposition method characterized XRD, textural analysis...
A utilização de fotocatalisadores na degradação efluentes tem-se demonstrado eficiente devido as suas propriedades oxidativas, sendo necessário, portanto, a seleção um catalisador adequado, o que inclui fase ativa e suporte ideais. Assim, presente trabalho teve como objetivo preparar ZnO Nb2O5 suportados em zeólita NaA para uso no tratamento efluente têxtil sintético (solução corante azul Color Index 250). Os catalisadores foram preparados com 2,5% 5% (m/m) dos respectivos óxidos...
A forma inadequada de descarte resíduos é responsável por causar a contaminação dos solos e corpos hídricos (superficiais subterrâneos), gerando grandes impactos econômicos, sociais ambientais. Assim, busca novas alternativas técnicas recuperação águas tem se tornando comum nos dias atuais. Deste modo, este trabalho teve objetivo avaliar o aproveitamento cascas coco da banana como biossorventes na remoção do chumbo manganês. Além disso, influência pH no processo foi avaliada. Como resultado,...
The removal of organic pollutants from water is a significant challenge in environmental remediation. In this study, the potential ZnO and Nb2O5 semiconductors with impregnation three percentages reduced graphene oxide (rGO) as efficient photocatalysts for degradation methylene blue (MB) dye aqueous solutions was investigated UV mini-reactor. heterostructures were synthesized by hydrothermal method characterized using various analytical techniques, such XRD, ATR-FTIR, Raman, TEM, N2...
Anais do Web Encontro Nacional de Engenharia Química (2764-7978) - Planejamento Experimental Para Otimização Das Porcentagens Dos Metais Cobre E Titânio Impregnados Em Mcm-41 Aplicação Na Fotorredução Catalítica Do Co2
Os processos oxidativos avançados (POAs) são uma alternativa promissora para o tratamento de efluente têxteis, principalmente se combinado a produção fotocatalítica hidrogênio. O objetivo deste trabalho foi aplicação da fotocatálise heterogênea no do têxtil sintético e posterior hidrogênio utilizando radiação artificial UV, como catalisador TiO 2 nano particulado, suportados na zeólita ZSM-5 com 5 10% fase ativa. catalisadores foram caracterizados identificação das propriedades texturais,...