Spontaneously formed gradient chemical compositional structures of niobium doped titanium dioxide nanoparticles enhance ultravioletand visible‑light photocatalytic performance

Scientific Reports Volume 11 Page 15236- published_at 2021-07-30
アクセス数 : 140
ダウンロード数 : 55

今月のアクセス数 : 1
今月のダウンロード数 : 1
File
SciRep_11_15236.pdf 2.41 MB 種類 : fulltext
Title ( eng )
Spontaneously formed gradient chemical compositional structures of niobium doped titanium dioxide nanoparticles enhance ultravioletand visible‑light photocatalytic performance
Creator
Kato Ryuma
Uchikoshi Tetsuo
Ishigaki Takamasa
Source Title
Scientific Reports
Volume 11
Start Page 15236
Abstract
Semiconductor photocatalysts showing excellent performance under irradiation of both ultraviolet (UV)- and visible (VIS)-light are highly demanded towards realization of sustainable energy systems. TiO2 is one of the most common photocatalysts and has been widely investigated as candidate showing UV/VIS responsive performance. In this study, we report synthesis of Nb doped TiO2 by environmentally benign mechanochemical reaction. Nb atoms were successfully incorporated into TiO2 lattice by applying mechanical energy. As synthesized Nb doped TiO2 were metastable phase and formed chemical compositional gradient structure of poorly Nb doped TiO2 core and highly Nb doped TiO2 surface after high temperature heat treatment. It was found that formed gradient chemical compositional heterojunctions effectively enhanced photocatalytic performance of Nb doped TiO2 under both of UV- and VIS-light irradiation, which is different trend compared with Nb doped TiO2 prepared through conventional methods. The approach shown here will be employed for versatile systems because of simple and environmentally benign process.
Descriptions
The present work is partially supported by JSPS KAKENHI Grant Number JP20K15368, JSPS Core-to-Core Program, Foundation for the Promotion of Ion Engineering, Izumi Science and Technology Foundation (2019-J-112), International Network on Polyoxometalate Science at Hiroshima University, Leading Initiative for Excellent Young Researchers from the Ministry of Education, Culture Sports, Science and Technology (MEXT) of Japan, and the Strategic Research Foundation at Private Universities from MEXT of Japan.
Language
eng
Resource Type journal article
Publisher
Nature Research
Date of Issued 2021-07-30
Rights
© The Author(s) 2021
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 2045-2322
[DOI] 10.1038/s41598-021-94512-x
[DOI] https://doi.org/10.1038/s41598-021-94512-x