Electronic structure of TiO2 nanotube arrays from X-ray absorption near edge structure studies

2009 ◽  
Vol 19 (37) ◽  
pp. 6804 ◽  
Author(s):  
J. G. Zhou ◽  
H. T. Fang ◽  
J. M. Maley ◽  
M. W. Murphy ◽  
J. Y. Peter Ko ◽  
...  
2015 ◽  
Vol 3 (1) ◽  
pp. 412-419 ◽  
Author(s):  
Dongniu Wang ◽  
Lijia Liu ◽  
Xueliang Sun ◽  
Tsun-Kong Sham

A detailed X-ray absorption fine structure study on amorphous and anatase TiO2 nanotube arrays reveals the structural variation in titanate framework and lithium arrangement during the lithiation process.


2018 ◽  
Vol 98 (19) ◽  
Author(s):  
Pegah M. Hosseinpour ◽  
Félix Jiménez-Villacorta ◽  
Jing Liu ◽  
Badih A. Assaf ◽  
Ian J. McDonald ◽  
...  

1999 ◽  
Vol 59 (3) ◽  
pp. 1571-1574 ◽  
Author(s):  
Chenxi Li ◽  
Kunquan Lu ◽  
Yuren Wang ◽  
Kozaburo Tamura ◽  
Shinya Hosokawa ◽  
...  

1996 ◽  
Vol 53 (3) ◽  
pp. 1119-1128 ◽  
Author(s):  
K. L/awniczak-Jabl/onska ◽  
R. J. Iwanowski ◽  
Z. Gol/acki ◽  
A. Traverse ◽  
S. Pizzini ◽  
...  

2006 ◽  
Vol 6 (11) ◽  
pp. 3422-3425
Author(s):  
Veeramuthu Vaithianathan ◽  
Jong Ha Moon ◽  
Chang-Hwan Chang ◽  
Kandasami Asokan ◽  
Sang Sub Kim

The electronic structure of laser-deposited P-doped ZnO films was investigated by X-ray absorption near-edge structure spectroscopy (XANES) at the O K-, Zn K-, and Zn L3-edges. While the O K-edge XANES spectrum of the n-type P-doped ZnO demonstrates that the density of unoccupied states, primarily O 2p–P 3sp hybridized states, is significantly high, the O K-edge XANES spectrum of the p-type P-doped ZnO shows a sharp decrease in intensity of the corresponding feature indicating that P replaces O sites in the ZnO lattice, and thereby generating PO. This produces holes to maintain charge neutrality that are responsible for the p-type behavior of P-doped ZnO. Both the Zn K-, and Zn L3-edge XANES spectra of the P-doped ZnO reveal that Zn plays no significant role in the p-type behavior of ZnO:P.


2014 ◽  
Vol 115 (17) ◽  
pp. 17E116 ◽  
Author(s):  
Bangmin Zhang ◽  
Cheng-Jun Sun ◽  
Jing-Sheng Chen ◽  
T. Venkatesan ◽  
Steve M. Heald ◽  
...  

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 298 ◽  
Author(s):  
Rui Li ◽  
Jin Yang ◽  
Shiyin Xu ◽  
Yushun Zhou ◽  
Xuan Wang ◽  
...  

Gd-doped TiO2 nanotube arrays with 3D ordered and high specific surface (176 m2/g) area are successfully prepared on a Ti foil surface via an anodizing method. The characterizations of Gd-doped TiO2 nanotube arrays are carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectrometer (EDX), optical contact angle measurer, and ultraviolet (UV) fluorescence spectrophotometer, respectively. The results reveal that the Gd-doped TiO2 nanotube arrays form on the Ti foil surface with a length of about 50.5 μm and 100 nm in diameter, and the growth direction grown along the (101) direction of anatase crystal. Under the optimized reaction conditions (60 V, 10 h, 0.01mol/L Gd3+), the crystal phase of Gd-doped TiO2 show an excellent nanotube structure, possess a beneficial photocatalytic performance for methyl orange (MO) (Degradation rate was 95.8%) and an excellent hydrophilic property (The optical contact angle was 4.9°). After doping with Gd, the hydrophilic and photocatalytic properties of the TiO2 nanotubes are further improved.


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