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Photocatalytic evaluation of heterojunctions semiconductor/ZnO/carbon xerogel in the photodegradation of 4-chlorophenol in both fluidized bed and batch reactors

Abstract

This project will explore the development of semiconductor/carbon xerogel/ZnO hybrid photocatalysts, aiming at the enhancement of the quantum efficiency of the degradation of organic pollutants. This will be the greatest technological innovation of this project, as the catalytic properties of this hybrid have not been studied in literature. The ZnO possesses high photocatalytic efficiency, reaction rate and superficial reactivity. However, its visible light absorption is limited e the recombination rate is low. Thus, in order to improve the ZnO photocatalytic efficiency the semiconductor visible light excitation and the recombination time must be improved. An efficient way to improve its photoactivity is the coupling of ZnO with another semiconductor by type II heterojunctions or Z-scheme. In these types of heterojunctions, the potential of the conduction and valence bands of the semiconductors are different, promoting the transfer of the photogenerated charges among them, which increases the recombination time and, consequently, the photocatalytic activity of the material. In this project, the semiconductor coupled with ZnO must have BC lower than ZnO, thus ZnS and g-C3N4 are the selected materials. Furthermore, the low superficial area problem can be solved by coupling the (g-C3N4 or ZnS)/ ZnO with carbon xerogel, as this material presents excellent electrical conductivity, high surface area and porosity, the last being easily manipulated by modifications in the synthesis parameters. The choice of the tannin molecule as the xerogel precursor is based at reducing costs and environmental impacts, as well as adding value to the proposed technological innovation. The band gap energy of the samples will be determined using diffuse reflectance spectroscopy. The crystallographic phase, morphology and elemental analysis will be evaluated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS), respectively. The hybrid photocatalytic action will be evaluated through the decomposition of 4-chlorophenol in a batch reactor and in a fluidized bed reactor. (AU)

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Scientific publications (17)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DE MORAES, NICOLAS PERCIANI; GOES, CLARICE MOREIRA; SPERANDIO, DANIEL COUTO; ROCHA, ROBSON DA SILVA; LANDERS, RICHARD; PARAMASIVAM, THANGADURAI; RODRIGUES, LIANA ALVARES. Development of a new zinc oxide/tin oxide/carbon xerogel photocatalyst for visible light photodegradation of 4-chlorophenol. MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, v. 269, . (18/16360-0, 18/10492-1, 17/10118-0, 19/03641-3, 13/02762-5, 18/12035-7)
MARTINS DE SOUSA, JULIANA GIANCOLI; CHICUTA DA SILVA, THIAGO VIEIRA; DE MORAES, NICOLAS PERCIANI; CAETANO PINTO DA SILVA, MARIA LUCIA; ROCHA, ROBSON DA SILVA; LANDERS, RICHARD; RODRIGUES, LIANA ALVARES. Visible light-driven ZnO/g-C3N4/carbon xerogel ternary photocatalyst with enhanced activity for 4-chlorophenol degradation. Materials Chemistry and Physics, v. 256, . (13/02762-5, 17/10118-0, 18/10492-1, 18/16360-0, 18/12035-7)
DE MORAES, NICOLAS PERCIANI; ANSELMO, RODRIGO BARBOSA; SARTOR, LUIS OTAVIO; JUCA DANTAS, GUSTAVO VIEGAS; RODRIGUES, LIANA ALVARES; CHAGURI E CARVALHO, LIVIA. Spray drying as feasible processing technique to enhance the photocatalytic activity of the Nb2O5/carbon xerogel composite. Materials Letters, v. 273, . (17/03428-2, 18/10492-1, 18/16360-0)
VALIM, RICARDO B.; TREVELIN, LEANDRO C.; SPERANDIO, DANIEL C.; CARNEIRO, JUSSARA F.; SANTOS, MAURO C.; RODRIGUES, LIANA A.; ROCHA, ROBSON S.; LANZA, V, MARCOS R.. Using carbon black modified with Nb2O5 and RuO2 for enhancing selectivity toward H2O2 electrogeneration. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 9, n. 6, . (11/14314-1, 17/10118-0, 16/12597-0, 18/10492-1, 19/00239-0, 13/16690-6, 13/02762-5, 14/50945-4)
DE MORAES, NICOLAS PERCIANI; TOREZIN, FERNANDA AZZONI; JUCA DANTAS, GUSTAVO VIEGAS; MARTINS DE SOUSA, JULIANA GIANCOLI; VALIM, RICARDO BERTHOLO; ROCHA, ROBSON DA SILVA; LANDERS, RICHARD; GAETANO PINTO DA SILVA, MARIA LUCIA; RODRIGUES, LIANA ALVARES. TiO2/Nb2O5/carbon xerogel ternary photocatalyst for efficient degradation of 4-chlorophenol under solar light irradiation. CERAMICS INTERNATIONAL, v. 46, n. 10, A, p. 14505-14515, . (13/02762-5, 18/16360-0, 18/12035-7, 18/10492-1, 17/10118-0)
DE MORAES, NICOLAS PERCIANI; DOS SANTOS, GABRIELA SPIRANDELLI; NEVES, GABRIEL COSTA; VALIM, RICARDO BERTHOLO; ROCHA, ROBSON DA SILVA; LANDERS, RICHARD; CAETANO PINTO DA SILVA, MARIA LUCIA; RODRIGUES, LIANA ALVARES. Development of Nb2O5-doped ZnO/Carbon xerogel photocatalyst for the photodegradation of 4-chlorophenol. OPTIK, v. 219, . (18/12035-7, 17/10118-0, 18/10492-1, 13/02762-5, 18/16360-0)
DE MORAES, NICOLAS PERCIANI; ANSELMO, RODRIGO BARBOSA; BACANI, REBECA; SARTOR, LUIS OTAVIO; RODRIGUES, LIANA ALVARES; CHAGURI, LIVIA. Effect of fluoride on the properties of spray-dried niobium-based composites: structure, porosity, particle size, morphology, and photoactivity. Chemical Engineering Communications, . (19/07046-2, 17/03428-2, 18/10492-1, 18/16360-0)
DE MORAES, NICOLAS PERCIANI; ROCHA, ROBSON DA SILVA; CAETANO PINTO DA SILVA, MARIA LUCIA; BASTOS CAMPOS, TIAGO MOREIRA; THIM, GILMAR PATROCINIO; LANDERS, RICHARD; RODRIGUES, LIANA ALVARES. Facile preparation of Bi-doped ZnO/beta-Bi2O3/Carbon xerogel composites towards visible-light photocatalytic applications: Effect of calcination temperature and bismuth content. CERAMICS INTERNATIONAL, v. 46, n. 15, p. 23895-23909, . (13/02762-5, 18/16360-0, 18/12035-7, 18/10492-1, 17/10118-0)
JUCA DANTAS, GUSTAVO VIEGAS; DE MORAES, NICOLAS PERCIANI; BACANI, REBECA; RODRIGUES, LIANA ALVARES. Facile synthesis of cadmium sulfide and the effect of thermal annealing in N-2-rich atmosphere on its structural, morphological, chemical, and optical properties. Materials Chemistry and Physics, v. 277, . (18/16360-0, 18/10492-1)
DE MORAES, NICOLAS PERCIANI; VALIM, RICARDO BERTHOLO; ROCHA, ROBSON DA SILVA; CAETANO PINTO SILVA, MARIA LUCIA; BASTOS CAMPOS, TIAGO MOREIRA; THIM, GILMAR PATROCINIO; RODRIGUES, LIANA ALVARES. Effect of synthesis medium on structural and photocatalytic properties of ZnO/carbon xerogel composites for solar and visible light degradation of 4-chlorophenol and bisphenol A. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v. 584, . (18/12035-7, 13/02762-5, 17/10118-0, 18/16360-0, 16/20920-5, 18/10492-1)
DE MORAES, NICOLAS PERCIANI; VALIM, RICARDO BERTHOLO; ROCHA, ROBSON DA SILVA; CAETANO PINTO DA SILVA, MARIA LUCIA; BASTOS CAMPOS, TIAGO MOREIRA; THIM, GILTNAR PATROCINIO; RODRIGUES, LIANA ALVARES. Zinc oxide/carbon xerogel composites for photocatalytic applications developed through acidic and alkaline synthesis routes: structural, morphological, and photocatalytic evaluations. JOURNAL OF NANOPARTICLE RESEARCH, v. 22, n. 6, . (13/02762-5, 18/10492-1, 18/16360-0, 18/12035-7, 17/10118-0, 16/20920-5)
DE MORAES, NICOLAS PERCIANI; ANTONIO ROUPINHA, LAIS HELENA; DOS SANTOS, GABRIELA SPIRANDELLI; CANUTO DE MENEZES, BEATRIZ ROSSI; MARTINS DE SOUSA, JULIANA GIANCOLI; JUCA DANTAS, GUSTAVO VIEGAS; CHAGURI, LIVIA; RODRIGUES, LIANA ALVARES. Synthesis, characterization and application of Nb2O5-doped zinc oxide for solar-based photodegradation of 4-chlorophenol. Materials Letters, v. 275, . (13/02762-5, 18/16360-0, 18/12035-7, 18/10492-1, 17/10118-0)
DE MORAES, NICOLAS PERCIANI; BACETTO, LETICIA ARAUJO; DOS SANTOS, GABRIELA SPIRANDELLI; CAETANO PINTO DA SILVA, MARIA LUCIA; BARROS MACHADO, JOAO PAULO; BASTOS CAMPOS, TIAGO MOREIRA; THIM, GILMAR PATROCINIO; RODRIGUES, LIANA ALVARES. Synthesis of novel ZnO/carbon xerogel composites: Effect of carbon content and calcination temperature on their structural and photocatalytic properties. CERAMICS INTERNATIONAL, v. 45, n. 3, p. 3657-3667, . (18/10492-1, 16/04244-0, 15/08995-7, 16/20920-5)
JULIANA GIANCOLI MARTINS DE SOUSA; NICOLAS PERCIANI DE MORAES; CLARICE MOREIRA GOES; GUSTAVO VIÉGAS JUCÁ DANTAS; MARIA LUCIA CAETANO PINTO DA SILVA; LIANA ALVARES RODRIGUES. Avaliação das propriedades estruturais e fotocatalíticas de compósitos g-C3N4/ZnO/xerogel de carbono sintetizados com diferentes tipos de tanino. MATERIA-RIO DE JANEIRO, v. 27, n. 1, . (18/16360-0, 18/10492-1, 19/03641-3)
GUSTAVO VIÉGAS JUCÁ DANTAS; NICOLAS PERCIANI DE MORAES; ROBSON DA SILVA ROCHA; ABNER DE SIERVO; MARCOS ROBERTO DE VASCONCELOS LANZA; LIANA ALVARES RODRIGUES. Synthesis and Application of the Ternary Zn0.5Cd0.5S/ZnO/carbon Xerogel Composite in the Photocatalytic Degradation of 4-chlorophenol. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 25, . (18/16360-0, 18/10492-1)
NICOLAS PERCIANI DE MORAES; LETICIA ARAÚJO BACETTO; CLARICE MOREIRA GOES; GUSTAVO VIÉGAS JUCÁ DANTAS; MARIA LUCIA CAETANO PINTO DA SILVA; LIANA ALVARES RODRIGUES. Desenvolvimento de compósitos ZnC2O4/xerogel de carbono para degradação fotocatalítica de azul de metileno sob radiação solar. MATERIA-RIO DE JANEIRO, v. 26, n. 2, . (18/16360-0, 18/10492-1, 19/03641-3)
DOS SANTOS, GABRIELA SPIRANDELLI; GOES, CLARICE MOREIRA; MARTINS DE SOUSA, JULIANA GIANCOLI; DE MORAES, NICOLAS PERCIANI; CHAGURI, LIVIA; RODRIGUES, LIANA ALVARES. Evaluation of ZnO/Carbon Xerogel Composite as a Photocatalyst for Solar and Visible Light Degradation of the Rhodamine B Dye. Journal of Nanoscience and Nanotechnology, v. 21, n. 4, p. 2292-2301, . (17/03428-2, 18/16360-0, 19/03641-3, 16/20920-5, 18/10492-1)

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