Non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts

Yidong Hu; Gang Chen; Chunmei Li; Zhonghui Han; Sue Hao; Weizhao Hong; Weinan Xing

doi:10.1039/c7ta06284b

Non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts

Yidong Hu
, Gang Chen^*
, Chunmei Li
, Zhonghui Han
, Sue Hao
, Weizhao Hong
, Weinan Xing

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Perovskite oxides and their derivative photocatalysts are promising candidates for highly efficient solar energy conversion and environmental remediation. Herein, we proposed a non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts. The experimental and theoretical results demonstrate that the Na_0.5Bi_2.5Ta₂O₉ single-crystal nanoplates (NBTO SCNs) with exposed {001} facets show more superior photocatalytic efficiency in hydrogen evolution and pollutant degradation than conventional integer NaTaO₃ and BiTaO₄. The non-integer structure (mixed A-site cations Na⁺ or Bi³⁺) of NBTO SCNs possesses giant spontaneous polarization along the c-axis. Therefore, the generated carriers can easily diffuse along the polarization direction to the opposite surfaces of catalysts, and thus significantly increase the photocatalytic activities of NBTO SCNs.

Original language	English
Pages (from-to)	22984-22987
Number of pages	4
Journal	Journal of Materials Chemistry A
Volume	5
Issue number	44
DOIs	https://doi.org/10.1039/c7ta06284b
State	Published - 2017
Externally published	Yes

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title = "Non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts",

abstract = "Perovskite oxides and their derivative photocatalysts are promising candidates for highly efficient solar energy conversion and environmental remediation. Herein, we proposed a non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts. The experimental and theoretical results demonstrate that the Na0.5Bi2.5Ta2O9 single-crystal nanoplates (NBTO SCNs) with exposed \{001\} facets show more superior photocatalytic efficiency in hydrogen evolution and pollutant degradation than conventional integer NaTaO3 and BiTaO4. The non-integer structure (mixed A-site cations Na+ or Bi3+) of NBTO SCNs possesses giant spontaneous polarization along the c-axis. Therefore, the generated carriers can easily diffuse along the polarization direction to the opposite surfaces of catalysts, and thus significantly increase the photocatalytic activities of NBTO SCNs.",

author = "Yidong Hu and Gang Chen and Chunmei Li and Zhonghui Han and Sue Hao and Weizhao Hong and Weinan Xing",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2017.",

year = "2017",

doi = "10.1039/c7ta06284b",

language = "英语",

volume = "5",

pages = "22984--22987",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

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}

TY - JOUR

T1 - Non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts

AU - Hu, Yidong

AU - Chen, Gang

AU - Li, Chunmei

AU - Han, Zhonghui

AU - Hao, Sue

AU - Hong, Weizhao

AU - Xing, Weinan

PY - 2017

Y1 - 2017

N2 - Perovskite oxides and their derivative photocatalysts are promising candidates for highly efficient solar energy conversion and environmental remediation. Herein, we proposed a non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts. The experimental and theoretical results demonstrate that the Na0.5Bi2.5Ta2O9 single-crystal nanoplates (NBTO SCNs) with exposed {001} facets show more superior photocatalytic efficiency in hydrogen evolution and pollutant degradation than conventional integer NaTaO3 and BiTaO4. The non-integer structure (mixed A-site cations Na+ or Bi3+) of NBTO SCNs possesses giant spontaneous polarization along the c-axis. Therefore, the generated carriers can easily diffuse along the polarization direction to the opposite surfaces of catalysts, and thus significantly increase the photocatalytic activities of NBTO SCNs.

AB - Perovskite oxides and their derivative photocatalysts are promising candidates for highly efficient solar energy conversion and environmental remediation. Herein, we proposed a non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts. The experimental and theoretical results demonstrate that the Na0.5Bi2.5Ta2O9 single-crystal nanoplates (NBTO SCNs) with exposed {001} facets show more superior photocatalytic efficiency in hydrogen evolution and pollutant degradation than conventional integer NaTaO3 and BiTaO4. The non-integer structure (mixed A-site cations Na+ or Bi3+) of NBTO SCNs possesses giant spontaneous polarization along the c-axis. Therefore, the generated carriers can easily diffuse along the polarization direction to the opposite surfaces of catalysts, and thus significantly increase the photocatalytic activities of NBTO SCNs.

UR - https://www.scopus.com/pages/publications/85034247060

U2 - 10.1039/c7ta06284b

DO - 10.1039/c7ta06284b

M3 - 文章

AN - SCOPUS:85034247060

SN - 2050-7488

VL - 5

SP - 22984

EP - 22987

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 44

ER -

Non-integer induced spontaneous polarization of highly efficient perovskite-based NBTO SCN photocatalysts

Abstract

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