Hierarchical Nanotubular Anatase/Rutile/TiO2(B) Heterophase Junction with Oxygen Vacancies for Enhanced Photocatalytic H2 Production

被引：90

作者：

An, Xiaoqiang ^{[1
]}

Hu, Chengzhi ^{[1
,3
]}

Liu, Huijuan ^{[2
,3
]}

Qu, Jiuhui ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China

[2] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

LANGMUIR | 2018年 / 34卷 / 05期

基金：

中国国家自然科学基金;

关键词：

PHASE JUNCTION; HYDROGEN EVOLUTION; TIO2; NANOPARTICLES; BLACK TIO2; RUTILE; CORE; NANOCRYSTALS; CATALYST;

D O I：

10.1021/acs.langmuir.7b03745

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Oxygen vacancies have been demonstrated to enhance the interfacial charge separation in TiO2-based photocatalysts. In this report, we explored a facile route to synthesize hierarchical nanotubular anatase/rutile/TiO2(B) nanostructures with high surface area and defective electronic structure. The formation of oxygen vacancies in the heterophase junction was analyzed by UV-vis absorption spectra, electron spin resonance, and X-ray photoelectron spectroscopy. The enhanced interfacial charge separation and transportation ensured the excellent photoactivity of oxygen-deficient junctions for the photocatalytic production of hydrogen. As a result, the defective anatase/rutile/TiO2(B) junction showed a high hydrogen evolution rate of 2.79 mmol/h, which was 19 times higher than blank TiO2 nanotubes. The results demonstrate that defect modulation is a powerful tool to enhance the catalytic performances of TiO2-based photocatalysts.

引用

页码：1883 / 1889

页数：7

共 27 条

[1] Boosting photoelectrochemical activities of heterostructured photoanodes through interfacial modulation of oxygen vacancies [J].

An, Xiaoqiang ;

Zhang, Le ;

Wen, Bo ;

Gu, Zhenao ;

Liu, Li-Min ;

Qu, Jiuhui ;

Liu, Huijuan .

NANO ENERGY, 2017, 35 :290-298

[2] New Insights into Defect-Mediated Heterostructures for Photoelectrochemical Water Splitting [J].

An, Xiaoqiang ;

Li, Tong ;

Wen, Bo ;

Tang, Junwang ;

Hu, Ziyu ;

Liu, Li-Min ;

Qu, Jiuhui ;

Huang, C. P. ;

Liu, Huijuan .

ADVANCED ENERGY MATERIALS, 2016, 6 (08)

[3] In Situ Formation of Disorder-Engineered TiO2(B)-Anatase Heterophase Junction for Enhanced Photocatalytic Hydrogen Evolution [J].

Cai, Jinmeng ;

Wang, Yating ;

Zhu, Yingming ;

Wu, Moqing ;

Zhang, Hao ;

Li, Xingang ;

Jiang, Zheng ;

Meng, Ming .

ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (45) :24987-24992

[4] Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals [J].

Chen, Xiaobo ;

Liu, Lei ;

Yu, Peter Y. ;

Mao, Samuel S. .

SCIENCE, 2011, 331 (6018) :746-750

[5] Simple synthesis of anatase/rutile/brookite TiO2 nanocomposite with superior mineralization potential for photocatalytic degradation of water pollutants [J].

Kaplan, Renata ;

Erjavec, Bostjan ;

Drazic, Goran ;

Grdadolnik, Joze ;

Pintar, Albin .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2016, 181 :465-474

[6] Understanding the anatase-rutile phase junction in charge separation and transfer in a TiO2 electrode for photoelectrochemical water splitting [J].

Li, Ailong ;

Wang, Zhiliang ;

Yin, Heng ;

Wang, Shengyang ;

Yan, Pengli ;

Huang, Baokun ;

Wang, Xiuli ;

Li, Rengui ;

Zong, Xu ;

Han, Hongxian ;

Li, Can .

CHEMICAL SCIENCE, 2016, 7 (09) :6076-6082

[7] Achieving overall water splitting using titanium dioxide-based photocatalysts of different phases [J].

Li, Rengui ;

Weng, Yuxiang ;

Zhou, Xin ;

Wang, Xiuli ;

Mi, Yang ;

Chong, Ruifeng ;

Han, Hongxian ;

Li, Can .

ENERGY & ENVIRONMENTAL SCIENCE, 2015, 8 (08) :2377-2382

[8] Engineering highly active TiO2 photocatalysts via the surface-phase junction strategy employing a titanate nanotube precursor [J].

Liu, Yuanxu ;

Wang, Zhonglei ;

Wang, Wendong ;

Huang, Weixin .

JOURNAL OF CATALYSIS, 2014, 310 :16-23

[9] Conducting Interface in Oxide Homojunction: Understanding of Superior Properties in Black TiO2 [J].

Lu, Xujie ;

Chen, Aiping ;

Luo, Yongkang ;

Lu, Ping ;

Dai, Yaomin ;

Enriquez, Erik ;

Dowden, Paul ;

Xu, Hongwu ;

Kotula, Paul G. ;

Azad, Abul K. ;

Yarotski, Dmitry A. ;

Prasankumar, Rohit P. ;

Taylor, Antoinette J. ;

Thompson, Joe D. ;

Jia, Quanxi .

NANO LETTERS, 2016, 16 (09) :5751-5755

[10] In Situ Preparation of a Ti3+ Self-Doped TiO2 Film with Enhanced Activity as Photoanode by N2H4 Reduction [J].

Mao, Chengyu ;

Zuo, Fan ;

Hou, Yang ;

Bu, Xianhui ;

Feng, Pingyun .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (39) :10485-10489

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