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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of Preparation Methodology on the Photocatalytic Activity of Nitrogen Doped Titanate and TiO2 Nanotubes

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Author(s):
Souza, Juliana S. [1] ; Alves, Wendel A. [1]
Total Authors: 2
Affiliation:
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210580 Santo Andre, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Nanoscience and Nanotechnology; v. 20, n. 9, p. 5390-5401, SEP 2020.
Web of Science Citations: 0
Abstract

Titanate and TiO2 nanotubes (TiNTs and TiO2NTs) are known as good photocatalysts under UV light irradiation, due to their high band gap energy. The nitrogen- doping process is one of the most studied methods to make these materials sensitive to visible light. However, most of these studies are focused on how calcination temperature affects the crystalline structure and, consequently, the photocatalytic efficiency, and few are investigated about the choice of the doping method. Here we report the synthesis of nitrogen-doped TiNTs and TiO2NTs (NTiNTs and NTiO2NT) through two different methods, and the comparison of the obtained materials properties. The photocatalytic efficiency was evaluated under visible light and correlated to the nature of nitrogen doping, which is a consequence of the doping method chosen. We found that the NTiNT's lamellar structure and its more negative zeta potential shall facilitate its interaction with the dye to be degraded. Moreover, the adsorbed nitrogen plays an important role over the degradation process. (AU)

FAPESP's process: 17/11395-7 - Microwave-assisted synthesis of metal oxides semiconductors heterojunctions with photocatalytic applications
Grantee:Juliana dos Santos de Souza Silva
Support Opportunities: Regular Research Grants
FAPESP's process: 14/50867-3 - INCT 2014: National Institute of Science and Technology in Bioanalysis
Grantee:Marco Aurelio Zezzi Arruda
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 15/24018-1 - Polymer-Peptide Conjugates for hydrogel formulation and its usage in detection
Grantee:Wendel Andrade Alves
Support Opportunities: Regular Research Grants