Advanced Materials

, volume 30 , issue 32 , pages 1802173

Homojunction of Oxygen and Titanium Vacancies and its Interfacial n–p Effect

Si Ming Wu ¹

Xiaolong Liu ²

Xi Liang Lian ¹

Tian Ge ¹

Christoph Janiak ³

Yuexing Zhang ⁴

Yi Lu ¹

Hao Zheng Yu ¹

Jie Hu ¹

Hao Wei ¹

Heng Zhao ¹

Gustaaf Van Tendeloo ⁵

Li-Ying Wang ²

Xiaoyu Yang ^{1, 6}

Bao-Lian Su ^{1, 7}

Hide authors affiliations Show authors affiliations: 7 affiliations

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Wuhan University of Technology; 122, Luoshi Road Wuhan 430070 China |

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics; Wuhan Institute of Physics and Mathematics; The Chinese Academy of Sciences; Wuhan 430071 China |

Institut für Anorganische Chemie und Strukturchemie; Heinrich-Heine-Universität Düsseldorf; 40204 Düsseldorf Germany |

⁴

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials; Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules; College of Chemistry and Chemical Engineering; Hubei University; Wuhan 430062 China |

⁵

EMAT (Electron Microscopy for Materials Science); University of Antwerp; Groenenborgerlaan 171 B-2020 Antwerpen Belgium |

⁶

School of Engineering and Applied Sciences; Harvard University; Cambridge MA 02138 USA |

⁷

Laboratory of Inorganic Materials Chemistry (CMI); University of Namur; 61, rue de Bruxelles B-5000 Namur Belgium |

Publication type: Journal Article

Publication date: 2018-06-26

Wiley

Advanced Materials

scimago Q1

wos Q1

SJR: 8.851

CiteScore: 39.4

Impact factor: 26.8

ISSN: 09359648, 15214095

DOI: 10.1002/adma.201802173

Copy DOI

PubMed ID: 29947064

General Materials Science

Mechanical Engineering

Mechanics of Materials

Abstract

The homojunction of oxygen/metal vacancies and its interfacial n-p effect on the physiochemical properties are rarely reported. Interfacial n-p homojunctions of TiO2 are fabricated by directly decorating interfacial p-type titanium-defected TiO2 around n-type oxygen-defected TiO2 nanocrystals in amorphous-anatase homogeneous nanostructures. Experimental measurements and theoretical calculations on the cell lattice parameters show that the homojunction of oxygen and titanium vacancies changes the charge density of TiO2 ; a strong EPR signal caused by oxygen vacancies and an unreported strong titanium vacancies signal of 2D 1 H TQ-SQ MAS NMR are present. Amorphous-anatase TiO2 shows significant performance regarding the photogeneration current, photocatalysis, and energy storage, owing to interfacial n-type to p-type conductivity with high charge mobility and less structural confinement of amorphous clusters. A new "homojunction of oxygen and titanium vacancies" concept, characteristics, and mechanism are proposed at an atomic-/nanoscale to clarify the generation of oxygen vacancies and titanium vacancies as well as the interface electron transfer.

Found

1 citation

Xiao Zhaohui

39 publications, 7 725 citations, 15 reviews

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Cite this

GOST |

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GOST Copy

Wu S. M. et al. Homojunction of Oxygen and Titanium Vacancies and its Interfacial n–p Effect // Advanced Materials. 2018. Vol. 30. No. 32. p. 1802173.

GOST all authors (up to 50) Copy

Wu S. M., Liu X., Lian X. L., Ge T., Janiak C., Zhang Y., Lu Y., Yu H. Z., Hu J., Wei H., Zhao H., Van Tendeloo G., Wang L., Yang X., Su B. Homojunction of Oxygen and Titanium Vacancies and its Interfacial n–p Effect // Advanced Materials. 2018. Vol. 30. No. 32. p. 1802173.

RIS |

Cite this

RIS Copy

TY - JOUR

DO - 10.1002/adma.201802173

UR - https://doi.org/10.1002/adma.201802173

TI - Homojunction of Oxygen and Titanium Vacancies and its Interfacial n–p Effect

T2 - Advanced Materials

AU - Wu, Si Ming

AU - Liu, Xiaolong

AU - Lian, Xi Liang

AU - Ge, Tian

AU - Janiak, Christoph

AU - Zhang, Yuexing

AU - Lu, Yi

AU - Yu, Hao Zheng

AU - Hu, Jie

AU - Wei, Hao

AU - Zhao, Heng

AU - Van Tendeloo, Gustaaf

AU - Wang, Li-Ying

AU - Yang, Xiaoyu

AU - Su, Bao-Lian

PY - 2018

DA - 2018/06/26

PB - Wiley

SP - 1802173

IS - 32

VL - 30

PMID - 29947064

SN - 0935-9648

SN - 1521-4095

ER -

BibTex |

Cite this

BibTex (up to 50 authors) Copy

@article{2018_Wu,

author = {Si Ming Wu and Xiaolong Liu and Xi Liang Lian and Tian Ge and Christoph Janiak and Yuexing Zhang and Yi Lu and Hao Zheng Yu and Jie Hu and Hao Wei and Heng Zhao and Gustaaf Van Tendeloo and Li-Ying Wang and Xiaoyu Yang and Bao-Lian Su},

title = {Homojunction of Oxygen and Titanium Vacancies and its Interfacial n–p Effect},

journal = {Advanced Materials},

year = {2018},

volume = {30},

publisher = {Wiley},

month = {jun},

url = {https://doi.org/10.1002/adma.201802173},

number = {32},

pages = {1802173},

doi = {10.1002/adma.201802173}

}

MLA

Cite this

MLA Copy

Wu, Si Ming, et al. “Homojunction of Oxygen and Titanium Vacancies and its Interfacial n–p Effect.” Advanced Materials, vol. 30, no. 32, Jun. 2018, p. 1802173. https://doi.org/10.1002/adma.201802173.

Publisher

Wiley

Journal

Advanced Materials

scimago Q1

wos Q1

SJR

8.851

CiteScore

39.4

Impact factor

26.8

ISSN

09359648 (Print)

15214095 (Electronic)