Laser processing of TiO2 colloids for an enhanced photocatalytic water splitting activity

被引：35
作者：
Filice, Simona [1 ,4 ]
Compagnini, Giuseppe [1 ]
Fiorenza, Roberto [1 ]
Scire, Salvatore [1 ]
D'Urso, Luisa [1 ]
Fragala, Maria Elena [1 ]
Russo, Paola [1 ,3 ]
Fazio, Enza [2 ]
Scalese, Silvia [4 ]
机构：
[1] Univ Catania, Dipartimento Sci Chim, Viale A Doria 6, I-95125 Catania, Italy
[2] Univ Messina, Dipartimento Sci Matemat & Informat Sci Fis & Sci, Vle FS dAlcontres 31, I-98166 Messina, Italy
[3] Univ Waterloo, CAMJ Mech Engn Dept, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada
[4] CNR IMM, Ottava Str 5, I-95121 Catania, Italy
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2017年 / 489卷
关键词：
Colloidal laser processing; Catalysis; Hydrogen production; VISIBLE-LIGHT PHOTOCATALYSIS; DOPED TIO2; HYDROGEN; ANATASE; OXIDE; TITANIA; TEMPERATURE; REDUCTION; NANOTUBES; MECHANISM;
D O I：
10.1016/j.jcis.2016.08.013
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：
We have measured the photocatalytic water splitting activity of several titania colloids, modified by nanosecond pulsed laser irradiation. Photocatalysis has been tested using UV and visible light. We have found that laser irradiation increases the hydrogen production efficiency up to a factor of three for anatase, rutile and P25. A hydrogen production rate as high as 30 mmol g(-1) h(-1) has been obtained with good stability, tested by repeated runs. The chemical and morphological properties of the nanoparticles have been studied by electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy, showing that laser irradiation promotes the formation of disordered surface state and lattice distortion which could be responsible for the observed enhanced photocatalytic activity. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码：131 / 137
页数：7
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