Cargando…

Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation

There is a need for highly efficient photocatalysts, particularly for water purification. In this study, we fabricated a mesoporous TiO(2) thin film on a boron-doped diamond (BDD) layer by a surfactant-assisted sol-gel method, in which self-assembled amphiphilic surfactant micelles were used as an o...

Descripción completa

Detalles Bibliográficos
Autores principales: Suzuki, Norihiro, Okazaki, Akihiro, Kuriyama, Haruo, Serizawa, Izumi, Hara, Aiga, Hirano, Yuiri, Nakabayashi, Yukihiro, Roy, Nitish, Terashima, Chiaki, Nakata, Kazuya, Katsumata, Ken-ichi, Kondo, Takeshi, Yuasa, Makoto, Fujishima, Akira
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6321498/
https://www.ncbi.nlm.nih.gov/pubmed/30486392
http://dx.doi.org/10.3390/molecules23123095
_version_ 1783385456840278016
author Suzuki, Norihiro
Okazaki, Akihiro
Kuriyama, Haruo
Serizawa, Izumi
Hara, Aiga
Hirano, Yuiri
Nakabayashi, Yukihiro
Roy, Nitish
Terashima, Chiaki
Nakata, Kazuya
Katsumata, Ken-ichi
Kondo, Takeshi
Yuasa, Makoto
Fujishima, Akira
author_facet Suzuki, Norihiro
Okazaki, Akihiro
Kuriyama, Haruo
Serizawa, Izumi
Hara, Aiga
Hirano, Yuiri
Nakabayashi, Yukihiro
Roy, Nitish
Terashima, Chiaki
Nakata, Kazuya
Katsumata, Ken-ichi
Kondo, Takeshi
Yuasa, Makoto
Fujishima, Akira
author_sort Suzuki, Norihiro
collection PubMed
description There is a need for highly efficient photocatalysts, particularly for water purification. In this study, we fabricated a mesoporous TiO(2) thin film on a boron-doped diamond (BDD) layer by a surfactant-assisted sol-gel method, in which self-assembled amphiphilic surfactant micelles were used as an organic template. Scanning electron microscopy revealed uniform mesopores, approximately 20 nm in diameter, that were hexagonally packed in the TiO(2) thin film. Wide-angle X-ray diffraction and Raman spectroscopy clarified that the framework crystallized in the anatase phase. Current–voltage (I–V) measurements showed rectification features at the TiO(2)/BDD heterojunction, confirming that a p–n hetero-interface formed. The as-synthesized mesoporous TiO(2)/BDD worked well as a photocatalyst, even with a small volume of TiO(2) (15 mm × 15 mm × c.a. 1.5 µm in thickness). The use of deep UV light (λ = 222 nm) as a light source was necessary to enhance photocatalytic activity, due to photo-excitation occurring in both BDD and TiO(2).
format Online
Article
Text
id pubmed-6321498
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-63214982019-01-14 Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation Suzuki, Norihiro Okazaki, Akihiro Kuriyama, Haruo Serizawa, Izumi Hara, Aiga Hirano, Yuiri Nakabayashi, Yukihiro Roy, Nitish Terashima, Chiaki Nakata, Kazuya Katsumata, Ken-ichi Kondo, Takeshi Yuasa, Makoto Fujishima, Akira Molecules Article There is a need for highly efficient photocatalysts, particularly for water purification. In this study, we fabricated a mesoporous TiO(2) thin film on a boron-doped diamond (BDD) layer by a surfactant-assisted sol-gel method, in which self-assembled amphiphilic surfactant micelles were used as an organic template. Scanning electron microscopy revealed uniform mesopores, approximately 20 nm in diameter, that were hexagonally packed in the TiO(2) thin film. Wide-angle X-ray diffraction and Raman spectroscopy clarified that the framework crystallized in the anatase phase. Current–voltage (I–V) measurements showed rectification features at the TiO(2)/BDD heterojunction, confirming that a p–n hetero-interface formed. The as-synthesized mesoporous TiO(2)/BDD worked well as a photocatalyst, even with a small volume of TiO(2) (15 mm × 15 mm × c.a. 1.5 µm in thickness). The use of deep UV light (λ = 222 nm) as a light source was necessary to enhance photocatalytic activity, due to photo-excitation occurring in both BDD and TiO(2). MDPI 2018-11-27 /pmc/articles/PMC6321498/ /pubmed/30486392 http://dx.doi.org/10.3390/molecules23123095 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Suzuki, Norihiro
Okazaki, Akihiro
Kuriyama, Haruo
Serizawa, Izumi
Hara, Aiga
Hirano, Yuiri
Nakabayashi, Yukihiro
Roy, Nitish
Terashima, Chiaki
Nakata, Kazuya
Katsumata, Ken-ichi
Kondo, Takeshi
Yuasa, Makoto
Fujishima, Akira
Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation
title Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation
title_full Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation
title_fullStr Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation
title_full_unstemmed Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation
title_short Synthesis of Mesoporous TiO(2)/Boron-Doped Diamond Photocatalyst and Its Photocatalytic Activity under Deep UV Light (λ = 222 nm) Irradiation
title_sort synthesis of mesoporous tio(2)/boron-doped diamond photocatalyst and its photocatalytic activity under deep uv light (λ = 222 nm) irradiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6321498/
https://www.ncbi.nlm.nih.gov/pubmed/30486392
http://dx.doi.org/10.3390/molecules23123095
work_keys_str_mv AT suzukinorihiro synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT okazakiakihiro synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT kuriyamaharuo synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT serizawaizumi synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT haraaiga synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT hiranoyuiri synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT nakabayashiyukihiro synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT roynitish synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT terashimachiaki synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT nakatakazuya synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT katsumatakenichi synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT kondotakeshi synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT yuasamakoto synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation
AT fujishimaakira synthesisofmesoporoustio2borondopeddiamondphotocatalystanditsphotocatalyticactivityunderdeepuvlightl222nmirradiation