Effect of synthesis route in the photocatalytic, structural and morphological properties of carbon xerogel-Nb2O5 composites

Author(s)

de Moraes, Nicolas Perciani ^[1] ; Neves, Gabriel Costa ^[1] ; Torezin, Fernanda Azzoni ^[1] ; Caetano Pinto da Silva, Maria Lucia ^[1] ; Rodrigues, Liana Alvares ^[1]

Affiliation

^[1] Univ Sao Paulo, EEL, Dept Engn Quim, Estr Municipal Campinho S-N, BR-12602810 Lorena, SP - Brazil

• Document type: Journal article
• Source: Inorganic Chemistry Communications; v. 98, p. 145-149, DEC 2018.
• Web of Science Citations: 1

Abstract

This project aimed to evaluate the synthesis route influence in the structural, morphologic and photocatalytic properties of carbon xerogel/Nb2O5 composites. Infrared spectroscopy and X-ray diffractometry confirm the existence of niobium-based oxides in the composites, whereas the diffuse reflectance and energy dispersive spectroscopy prove the incorporation of the carbon xerogel. The XC-24Nb composite presented the best photocatalytical response, as it presented higher crystallinity, high surface area and superior carbon xerogel incorporation. The XC-24Nb carb was the least effective material, probably due to its considerably inferior surface area. The degradation of methylene blue is controlled by electrons and electron vacancies. (AU)

• FAPESP's process: 15/08995-7 - Preparation, modification and catalytic evaluation of Nb2O5-based photocatalysts
• Grantee: Liana Alvares Rodrigues
• Support Opportunities: Regular Research Grants
• FAPESP's process: 16/04244-0 - Preparation, modification and catalytic evaluation of TiO2-based photocatalysts
• Grantee: Nicolas Perciani de Moraes
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 16/20920-5 - Heterogeneous photocatalysis applied in the degradation of organic pollutants using a hybrid zinc oxide-carbon xerogel as catalyst
• Grantee: Nicolas Perciani de Moraes
• Support Opportunities: Scholarships in Brazil - Master