3D Flowerlike α-Fe2O3@TiO2 Core-Shell Nanostructures: General Synthesis and Enhanced Photocatalytic Performance

Jun Liu; Shuanglei Yang; Wei Wu; Qingyong Tian; Shuyuan Cui; Zhigao Dai; Feng Ren; Xiangheng Xiao; Changzhong Jiang

doi:10.1021/acssuschemeng.5b00956

3D Flowerlike α-Fe₂O₃@TiO₂ Core-Shell Nanostructures: General Synthesis and Enhanced Photocatalytic Performance

Jun Liu
, Shuanglei Yang
, Wei Wu
, Qingyong Tian
, Shuyuan Cui
, Zhigao Dai
, Feng Ren
, Xiangheng Xiao
, Changzhong Jiang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

208 Citations (Scopus)

Abstract

The 3D flowerlike α-Fe₂O₃@TiO₂ core-shell nanocrystals with thorhombic, cubic, and discal morphologies are synthesized for photocatalytic application. α-Fe₂O₃ nanocrystals were prepared via a Cu²⁺, Zn²⁺, and Al³⁺ ion-mediated hydrothermal route. The α-Fe₂O₃@TiO₂ core-shell nanocrystals are obtained via a hydrothermal and annealing process. The shape-dependent photocatalytic activities of these as-obtained α-Fe₂O₃@TiO₂ core-shell nanocrystals are measured. The results reveal that the discal α-Fe₂O₃@TiO₂ nanocrystals exhibit the best photocatalytic activity relative to the other two core-shell nanocrystals because the discal α-Fe₂O₃ nanocrystals possess more rough surface and surface defects. The fast interfacial charge-transfer process and the wide spectral response could be the driving force for the enhanced photocatalytic performance. These core-shell architectures provide a positive example for synthesis of novel composite nanomaterial. © 2015 American Chemical Society.

Original language	English
Pages (from-to)	2975-2984
Journal	ACS Sustainable Chemistry & Engineering
Volume	3
Issue number	11
DOIs	https://doi.org/10.1021/acssuschemeng.5b00956
Publication status	Published - 27 Sept 2015
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by the NSFC (51201115, 51171132, 11375134), China Postdoctoral Science Foundation (2014M550406), Hong Kong Scholars Program, Hubei Provincial Natural Science Foundation (2014CFB261), the Fundamental Research Funds for the Central Universities (No. 2042015kf0184) and Wuhan University.

Research Keywords

Core-shell structure
Heterostructures
Iron oxide
Photocatalyst
Titanium dioxide

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10.1021/acssuschemeng.5b00956

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Cite this

@article{efa2f0e6241b4f6ca32c9eeb8acf6d47,

title = "3D Flowerlike α-Fe2O3@TiO2 Core-Shell Nanostructures: General Synthesis and Enhanced Photocatalytic Performance",

abstract = "The 3D flowerlike α-Fe2O3@TiO2 core-shell nanocrystals with thorhombic, cubic, and discal morphologies are synthesized for photocatalytic application. α-Fe2O3 nanocrystals were prepared via a Cu2+, Zn2+, and Al3+ ion-mediated hydrothermal route. The α-Fe2O3@TiO2 core-shell nanocrystals are obtained via a hydrothermal and annealing process. The shape-dependent photocatalytic activities of these as-obtained α-Fe2O3@TiO2 core-shell nanocrystals are measured. The results reveal that the discal α-Fe2O3@TiO2 nanocrystals exhibit the best photocatalytic activity relative to the other two core-shell nanocrystals because the discal α-Fe2O3 nanocrystals possess more rough surface and surface defects. The fast interfacial charge-transfer process and the wide spectral response could be the driving force for the enhanced photocatalytic performance. These core-shell architectures provide a positive example for synthesis of novel composite nanomaterial. {\textcopyright} 2015 American Chemical Society.",

keywords = "Core-shell structure, Heterostructures, Iron oxide, Photocatalyst, Titanium dioxide",

author = "Jun Liu and Shuanglei Yang and Wei Wu and Qingyong Tian and Shuyuan Cui and Zhigao Dai and Feng Ren and Xiangheng Xiao and Changzhong Jiang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2015",

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doi = "10.1021/acssuschemeng.5b00956",

language = "English",

volume = "3",

pages = "2975--2984",

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TY - JOUR

T1 - 3D Flowerlike α-Fe2O3@TiO2 Core-Shell Nanostructures

T2 - General Synthesis and Enhanced Photocatalytic Performance

AU - Liu, Jun

AU - Yang, Shuanglei

AU - Wu, Wei

AU - Tian, Qingyong

AU - Cui, Shuyuan

AU - Dai, Zhigao

AU - Ren, Feng

AU - Xiao, Xiangheng

AU - Jiang, Changzhong

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015/9/27

Y1 - 2015/9/27

N2 - The 3D flowerlike α-Fe2O3@TiO2 core-shell nanocrystals with thorhombic, cubic, and discal morphologies are synthesized for photocatalytic application. α-Fe2O3 nanocrystals were prepared via a Cu2+, Zn2+, and Al3+ ion-mediated hydrothermal route. The α-Fe2O3@TiO2 core-shell nanocrystals are obtained via a hydrothermal and annealing process. The shape-dependent photocatalytic activities of these as-obtained α-Fe2O3@TiO2 core-shell nanocrystals are measured. The results reveal that the discal α-Fe2O3@TiO2 nanocrystals exhibit the best photocatalytic activity relative to the other two core-shell nanocrystals because the discal α-Fe2O3 nanocrystals possess more rough surface and surface defects. The fast interfacial charge-transfer process and the wide spectral response could be the driving force for the enhanced photocatalytic performance. These core-shell architectures provide a positive example for synthesis of novel composite nanomaterial. © 2015 American Chemical Society.

AB - The 3D flowerlike α-Fe2O3@TiO2 core-shell nanocrystals with thorhombic, cubic, and discal morphologies are synthesized for photocatalytic application. α-Fe2O3 nanocrystals were prepared via a Cu2+, Zn2+, and Al3+ ion-mediated hydrothermal route. The α-Fe2O3@TiO2 core-shell nanocrystals are obtained via a hydrothermal and annealing process. The shape-dependent photocatalytic activities of these as-obtained α-Fe2O3@TiO2 core-shell nanocrystals are measured. The results reveal that the discal α-Fe2O3@TiO2 nanocrystals exhibit the best photocatalytic activity relative to the other two core-shell nanocrystals because the discal α-Fe2O3 nanocrystals possess more rough surface and surface defects. The fast interfacial charge-transfer process and the wide spectral response could be the driving force for the enhanced photocatalytic performance. These core-shell architectures provide a positive example for synthesis of novel composite nanomaterial. © 2015 American Chemical Society.

KW - Core-shell structure

KW - Heterostructures

KW - Iron oxide

KW - Photocatalyst

KW - Titanium dioxide

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