| Item type |
文献 / Documents(1) |
| 公開日 |
2023-11-29 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1021/acs.chemmater.3c01903 |
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|
言語 |
ja |
|
|
関連名称 |
10.1021/acs.chemmater.3c01903 |
| 出版タイプ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
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|
タイトル |
Optical and Photocatalytic Properties of Three-Dimensionally Ordered Macroporous Ta2O5 and Ta3N5 Inverse Opals |
|
言語 |
en |
| 著者 |
Dong, Yusong
フジサカ, アイ
Sun-Waterhouse, Dongxiao
村井, 啓一郎
森賀, 俊広
Waterhouse, Geoffrey I. N.
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Colloidal crystal templating is a simple yet remarkably versatile synthetic strategy toward inverse opal (IO) photonic crystals for optical sensing and catalytic applications. Herein, we report the successful fabrication of tantalum (V) oxide, Ta2O5, inverse opal thin films and powders using the colloidal crystal templating method, utilizing poly(methyl methacrylate) (PMMA) colloidal crystals as sacrificial templates and TaCl5 as the tantalum source. The Ta2O5 IO thin films and powders showed structural color at ultraviolet (UV) and visible wavelengths, with the photonic band gap (PBG) position along the [111] direction increasing linearly with the diameter of macropores (D) in the inverse opals and also the refractive index of the medium filling the macropores, in excellent accord with a modified Bragg’s law expression. Thermal ammonolysis of the Ta2O5 inverse opals at 700 °C yielded well-ordered Ta3N5 IO films and powders possessing high specific surface areas (37 m2 g–1) and a semiconductor band gap of 2.0–2.1 eV. A Pt/Ta3N5 IO photocatalyst delivered a H2 production rate of ∼300 μmol g–1 h–1 in aqueous methanol (10 vol % MeOH) under visible-light irradiation (300 W Xe lamp, λ ≥ 420 nm), approximately twice that achieved using conventional Pt/Ta3N5 powder photocatalysts (161 μmol g–1 h–1, 8.4 m2 g–1). Results demonstrate that inverse opal engineering is an effective approach for realizing Ta2O5 IO thin films for sensing applications and Ta3N5 IOs with enhanced photocatalyst performance. |
|
言語 |
en |
| 書誌情報 |
en : Chemistry of Materials
巻 35,
号 19,
p. 8281-8300,
発行日 2023-09-21
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
08974756 |
| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
15205002 |
| 収録物ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10699608 |
| 収録物ID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12096771 |
| 出版者 |
|
|
出版者 |
American Chemical Society |
|
言語 |
en |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This article is licensed under CC-BY-NC-ND 4.0. |
| EID |
|
|
識別子 |
403210 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
chemmater_35_19_8281.pdf (8.23 MB)
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