TY - JOUR
T1 - Synthesis and photocatlytic performance of nano-sized TiO2 materials prepared by dealloying Ti-Cu-Pd amorphous alloys
AU - Jiang, Jing
AU - Zhu, Shengli
AU - Xu, Wence
AU - Cui, Zhenduo
AU - Yang, Xianjin
N1 - Funding Information:
This work was partially supported by the Key Projects in the Tianjin Science & Technology Pillar Program ( 09ZCKFGX29100 ) and National Natural Science Foundation of China ( 50901051 and 51172159 ). We also gratefully acknowledge the Specialized Research Fund for the Doctoral Program of Higher Education of China (20110032110023).
Publisher Copyright:
© 2015 Elsevier Ltd.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2015/5
Y1 - 2015/5
N2 - TiO2 nanospindles with exposed (0 0 1) facet were synthesized through a simple dealloying reaction. The rutile photocatalysts were characterized by X-ray diffraction, scanning electron microscope and transmission electron microscope, inductively coupled plasma optical emission spectrometry and ultraviolet-visible spectrophotometer. A Rhodamine B dye (RhB) was used to detect the photocatalytic activity of TiO2 under full light irradiation. The presence of Pd in the original amorphous alloy reduced the surface free energy of TiO2, stabilized the (0 0 1) facet. The Pd8-TiO2 sample exhibited the largest crystal size along the direction which is perpendicular to the (0 0 1) facet. The photocatalytic degradation rate of RhB was improved due to the Pd addition in the original amorphous alloy. This indicated that the exposure of (0 0 1) facets could enhance the activity of TiO2 photocatalyst. In addition, the presence of isolated Pd atoms on the surface of TiO2 would be another probable reason for the improvement of photocatalytic activity.
AB - TiO2 nanospindles with exposed (0 0 1) facet were synthesized through a simple dealloying reaction. The rutile photocatalysts were characterized by X-ray diffraction, scanning electron microscope and transmission electron microscope, inductively coupled plasma optical emission spectrometry and ultraviolet-visible spectrophotometer. A Rhodamine B dye (RhB) was used to detect the photocatalytic activity of TiO2 under full light irradiation. The presence of Pd in the original amorphous alloy reduced the surface free energy of TiO2, stabilized the (0 0 1) facet. The Pd8-TiO2 sample exhibited the largest crystal size along the direction which is perpendicular to the (0 0 1) facet. The photocatalytic degradation rate of RhB was improved due to the Pd addition in the original amorphous alloy. This indicated that the exposure of (0 0 1) facets could enhance the activity of TiO2 photocatalyst. In addition, the presence of isolated Pd atoms on the surface of TiO2 would be another probable reason for the improvement of photocatalytic activity.
KW - A. Nanostructures
KW - B. Chemical synthesis
KW - C. Crystal growth
KW - D. X-ray diffraction
KW - E. Catalytic properties
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U2 - 10.1016/j.materresbull.2015.01.050
DO - 10.1016/j.materresbull.2015.01.050
M3 - Article
AN - SCOPUS:84922503258
VL - 65
SP - 302
EP - 306
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
ER -