Abstract
We report a methodology for creating protonated layered titanate-rutile heterojunctions on the outer particle surface of protonated layered titanate by treating layered potassium titanate (K0.8Ti1.73Li0.27O4) with dilute HCl and then drying it at room temperature under reduced pressure. After Pt co-catalyst loading, this protonated layered titanate/rutile composite with heterojunctions showed higher photocatalytic H2 evolution activity from water under simulated solar light compared to that of Pt-loaded P25, the standard photocatalyst for this reaction. The high photocatalytic activity was ascribable to enhanced photocatalytic activity of the protonated layered titanate based on an efficient charge separation at the protonated layered titanate-rutile heterojunction in addition to the sensitization effects of rutile, which absorbs light with longer wavelengths compared to those of protonated layered titanate.
| Original language | English |
|---|---|
| Pages (from-to) | 24538-24544 |
| Number of pages | 7 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 9 |
| Issue number | 29 |
| DOIs | |
| Publication status | Published - 2017 Jul 26 |
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Keywords
- enhanced charge separation
- heterojunction
- hydrogen evolution from water
- layered titanate
- room temperature rutile formation
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Room-Temperature Rutile TiO2 Nanoparticle Formation on Protonated Layered Titanate for High-Performance Heterojunction Creation. / Saito, Kanji; Tominaka, Satoshi; Yoshihara, Shun; Ohara, Koji; Sugahara, Yoshiyuki; Ide, Yusuke.
In: ACS Applied Materials and Interfaces, Vol. 9, No. 29, 26.07.2017, p. 24538-24544.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Room-Temperature Rutile TiO2 Nanoparticle Formation on Protonated Layered Titanate for High-Performance Heterojunction Creation
AU - Saito, Kanji
AU - Tominaka, Satoshi
AU - Yoshihara, Shun
AU - Ohara, Koji
AU - Sugahara, Yoshiyuki
AU - Ide, Yusuke
PY - 2017/7/26
Y1 - 2017/7/26
N2 - We report a methodology for creating protonated layered titanate-rutile heterojunctions on the outer particle surface of protonated layered titanate by treating layered potassium titanate (K0.8Ti1.73Li0.27O4) with dilute HCl and then drying it at room temperature under reduced pressure. After Pt co-catalyst loading, this protonated layered titanate/rutile composite with heterojunctions showed higher photocatalytic H2 evolution activity from water under simulated solar light compared to that of Pt-loaded P25, the standard photocatalyst for this reaction. The high photocatalytic activity was ascribable to enhanced photocatalytic activity of the protonated layered titanate based on an efficient charge separation at the protonated layered titanate-rutile heterojunction in addition to the sensitization effects of rutile, which absorbs light with longer wavelengths compared to those of protonated layered titanate.
AB - We report a methodology for creating protonated layered titanate-rutile heterojunctions on the outer particle surface of protonated layered titanate by treating layered potassium titanate (K0.8Ti1.73Li0.27O4) with dilute HCl and then drying it at room temperature under reduced pressure. After Pt co-catalyst loading, this protonated layered titanate/rutile composite with heterojunctions showed higher photocatalytic H2 evolution activity from water under simulated solar light compared to that of Pt-loaded P25, the standard photocatalyst for this reaction. The high photocatalytic activity was ascribable to enhanced photocatalytic activity of the protonated layered titanate based on an efficient charge separation at the protonated layered titanate-rutile heterojunction in addition to the sensitization effects of rutile, which absorbs light with longer wavelengths compared to those of protonated layered titanate.
KW - enhanced charge separation
KW - heterojunction
KW - hydrogen evolution from water
KW - layered titanate
KW - room temperature rutile formation
UR - http://www.scopus.com/inward/record.url?scp=85026266304&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85026266304&partnerID=8YFLogxK
U2 - 10.1021/acsami.7b04051
DO - 10.1021/acsami.7b04051
M3 - Article
AN - SCOPUS:85026266304
VL - 9
SP - 24538
EP - 24544
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 29
ER -