Impact of calcination of hydrothermally synthesized TiO2 nanowires on their photocatalytic efficiency

被引：36
作者：
Al-Hajji, L. A. [1 ]
Ismail, Adel A. [1 ]
Al-Hazza, A. [1 ]
Ahmed, S. A. [1 ]
Alsaidi, M. [1 ]
Almutawa, F. [1 ]
Bumajdad, A. [2 ]
机构：
[1] Kuwait Inst Sci Res, Energy & Bldg Res Ctr, Nanotechnol & Adv Mat Program, POB 24885, Safat, Kuwait
[2] Kuwait Univ, Fac Sci, Chem Dept, POB 5969, Safat 13060, Kuwait
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2020年 / 1200卷
关键词：
TiO2; NWs; Phase transformations; Photodegradation; Endocrine; Photocatalytic efficiency; PHASE-TRANSFORMATION; MESOPOROUS TIO2; ANATASE TIO2; BROOKITE; TITANIA; GROWTH; NANOCRYSTALLINE; NANOPARTICLES; DEGRADATION; ENDOCRINE;
D O I：
10.1016/j.molstruc.2019.127153
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The phase transformations of hydrothermally prepared H2Ti3O7 nanowires (NWs) upon calcination at different temperatures were addressed to interpret the impact of H2Ti3O7 NWs crystallization on their photocatalytic performance for resorcinol photodegradation under UV illumination. Bicrystalline brookite/anatase NWs were obtained by calcination at 800 degrees C, which indicated a superior photocatalyst compared with rutile/brookite NWs or TiO2(B)/anatase NWs as well as commercial P-25 photocatalysts. The brookite/anatase NWs photocatalyst exhibited high photocatalytic efficiency up to 99% owing to its long charge transfer channels and high resorcinol adsorption capacity, while the commercial P-25 photocatalyst is 72% within 3 h. The rate constant k (min(-1)) value of brookite/anatase heterostructure NWs is greater than that of TiO2(B)/anatase NWs and commercial P-25 for 5.6 and 2 times, respectively. (C) 2019 Elsevier B.V. All rights reserved.
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页数：11
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共 66 条
[1]   Mesoporous TiO2 nanocrystals as efficient photocatalysts: Impact of calcination temperature and phase transformation on photocatalytic performance [J].
Atitar, M. Faycal ;
Ismail, Adel A. ;
Al-Sayari, S. A. ;
Bahnemann, Detlef ;
Afanasev, D. ;
Emeline, A. V. .
CHEMICAL ENGINEERING JOURNAL, 2015, 264 :417-424
[2]   Effect of post-heat treatment on the photocatalytic activity of titanium dioxide nanowire membranes deposited on a Ti substrate [J].
Chang, Ying ;
Wu, Chonggang ;
Wang, Huihu ;
Xiong, Yan ;
Chen, Yuan ;
Ke, Kai ;
He, Yao ;
Dong, Shijie .
RSC ADVANCES, 2017, 7 (35) :21422-21429
[3]   Synthesis of nitrogen & palladium co-doped mesoporous titanium dioxide nanoparticles via evaporation induced self assembly method and study of their photocatalytic properties [J].
Chauhan, Nikhil ;
Singh, Virender ;
Kumar, Suresh ;
Kumari, Monika ;
Sirohi, Kapil .
JOURNAL OF MOLECULAR STRUCTURE, 2019, 1185 :219-228
[4]   Wet oxidation of high-concentration reactive dyes [J].
Chen, GH ;
Lei, LC ;
Yue, PL .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (05) :1837-1843
[5]   A new highly efficient method for the synthesis of rutile TiO2 [J].
Chen, Guo ;
Chen, Jin ;
Song, Zengkai ;
Srinivasakannan, C. ;
Peng, Jinhui .
JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 585 :75-77
[6]   A Facile and Green Approach to Synthesize Mesoporous Anatase TiO2 Nanomaterials for Efficient Dye-Sensitized and Hole-Conductor-Free Perovskite Solar Cells [J].
Chu, Liang ;
Zhang, Jie ;
Liu, Wei ;
Zhang, Rui ;
Yang, Jian ;
Hu, Ruiyuan ;
Li, Xing'ao ;
Huang, Wei .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (04) :5588-5597
[7]   Brookite, the Least Known TiO2 Photocatalyst [J].
Di Paola, Agatino ;
Bellardita, Marianna ;
Palmisano, Leonardo .
CATALYSTS, 2013, 3 (01) :36-73
[8]   Visible light activated carbon and co-doped mesoporous TiO2 as efficient photocatalyst for degradation of ibuprofen [J].
El -Sheikh, Said M. ;
Khedr, Tamer M. ;
Hakki, Amer ;
Ismail, Adel A. ;
Badawy, Waheed A. ;
Bahnemann, Detlef W. .
SEPARATION AND PURIFICATION TECHNOLOGY, 2017, 173 :258-268
[9]   Fabrication of highly efficient TiO2/C3N4 visible light driven photocatalysts with enhanced photocatalytic activity [J].
Faisal, M. ;
Ismail, Adel A. ;
Harraz, Farid A. ;
Al-Sayari, S. A. ;
El-Toni, Ahmed Mohamed ;
Al-Salami, A. E. ;
Al-Assiri, M. S. .
JOURNAL OF MOLECULAR STRUCTURE, 2018, 1173 :428-438
[10]   THE SOFT CHEMICAL SYNTHESIS OF TIO2 (B) FROM LAYERED TITANATES [J].
FEIST, TP ;
DAVIES, PK .
JOURNAL OF SOLID STATE CHEMISTRY, 1992, 101 (02) :275-295
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