Pressure induced structural transformations of anatase TiO2 nanotubes probed by Raman spectroscopy and synchrotron X-ray diffraction

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76142-76150 ◽  
Author(s):  
Zhaohui Dong ◽  
Fengping Xiao ◽  
Ankang Zhao ◽  
Lijia Liu ◽  
Tsun-Kong Sham ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Tio2 Nanotubes ◽  
Structural Transformations ◽  
Anatase Tio2 ◽  
X Ray Diffraction ◽  
X Ray

Pressure-induced transformations of anatase TiO2 nanotubes probed by in situ Raman spectroscopy and synchrotron X-ray diffraction reveal novel compression behaviors.

Combined in situ X-ray diffraction and Raman spectroscopy on majoritic garnet inclusions in diamonds

2002 ◽  
Vol 198 (3-4) ◽  
pp. 485-493 ◽  
Author(s):  
Martin Kunz ◽  
Philippe Gillet ◽  
Guillaume Fiquet ◽  
Violaine Sautter ◽  
Heinz Graafsma ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
Majoritic Garnet ◽  
X Ray

scholarly journals Elucidating the Structural Evolution of a Highy Porous Responsive Metal-Organic Framework (DUT-49(M)) upon Guests Desorption by Time-Resolved In-Situ Powder X-Ray Diffraction

2020 ◽  
Author(s):  
Bikash Garai ◽  
Volodymyr Bon ◽  
Francesco Walenszus ◽  
Azat Khadiev ◽  
Dmitri Novikov ◽  
...  
Keyword(s):  
Adsorption Isotherms ◽  
Metal Organic Framework ◽  
Structural Evolution ◽  
Structural Transformations ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Metal Organic ◽  
Subcritical Fluid

Variation in the metal centres of M-M paddle-wheel SBU results in the formation of isostructural DUT-49(M) frameworks. However, the porosity of the framework was found to be different for each of the structures. While a high and moderate porosity was obtained for DUT-49(Cu) and DUT-49(Ni), respectively, other members of the series [DUT-49(M); M= Mn, Fe, Co, Zn, Cd] show very low porosity and shapes of the adsorption isotherms which is not expected for op phases of these MOFs. Investigation on those MOFs revealed that those frameworks undergo structural collapse during the solvent removal at the activation step. Thus, herein, we aimed to study the detailed structural transformations that are possibly occurring during the removal of the subcritical fluid from the framework.

scholarly journals A study on preparation and characterization of carbon doped TiO2 nanotubes

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Srimala Sreekantan ◽  
Roshasnorlyza Hazan ◽  
Zainovia Lockman ◽  
Ishak Mat
Keyword(s):  
Methyl Orange ◽  
Tio2 Nanotubes ◽  
Pure Tio2 ◽  
Ex Situ ◽  
X Ray Diffraction ◽  
Methyl Orange Degradation ◽  
Doped Tio2 ◽  
X Ray ◽  
Carbon Doped

The present study is directed to clarify the influence of carbon doping on the degradation of methyl orange. TiO2 nanotubes were prepared by anodizing titanium foils in a two electrode configuration bath with titanium foil as the anode and platinum as the counter electrode. The electrochemical bathconsists of 1 M Na2SO4 with 0.7 g ammonium fluoride, NH4F. The nanotubes obtained were further doped with carbon via in-situ and ex-situ method. Incorporation of carbon on TiO2 via in-situ method is accomplished during the anodization process by introducing oxalic acid into electrolyte while theex-situ doping involves carbon incorporation into pre-fabricated TiO2 nanotube via flame annealing using carbon blackN330. Characterization such as Scanning Electron Microscope (SEM), Energy Dispersive X-ray Analysis (EDX), and X-Ray Diffraction (XRD) are used to determine the surfacemorphology, composition of dopants, and phases exists. Well ordered nanotube with good adherence and smooth surface was obtained for both methods. When the oxide was annealed, X-ray diffraction analysis revealed the presence of anatase and rutile phase. The photocatalytic properties of thepure TiO2 and carbon doped TiO2 were tested for methyl orange degradation and the result indicated that the in-situ doped TiO2 has much better degradation than the ex-situ and pure TiO2. The percentage of methyl orange degradation for in-situ was 20% and 41% higher than ex-situ doped TiO2 and pure TiO2, respectively.

Direct In Situ Investigation of Milling Reactions Using Combined X-ray Diffraction and Raman Spectroscopy

2014 ◽  
Vol 54 (6) ◽  
pp. 1799-1802 ◽  
Author(s):  
Lisa Batzdorf ◽  
Franziska Fischer ◽  
Manuel Wilke ◽  
Klaus-Jürgen Wenzel ◽  
Franziska Emmerling
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
In Situ Investigation

scholarly journals In Situ High-Pressure X-ray Diffraction and Raman Spectroscopy Study of Ti3C2Tx MXene

2018 ◽  
Vol 13 (1) ◽  
Author(s):  
Luxi Zhang ◽  
Weitao Su ◽  
Yanwei Huang ◽  
He Li ◽  
Li Fu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
High Pressure ◽  
Spectroscopy Study ◽  
X Ray Diffraction ◽  
X Ray

Combined synchrotron x-ray diffraction and micro-Raman for following in situ the growth of solution-deposited YBa2Cu3O7 thin films

2005 ◽  
Vol 20 (12) ◽  
pp. 3270-3273 ◽  
Author(s):  
F. Berberich ◽  
H. Graafsma ◽  
B. Rousseau ◽  
A. Canizares ◽  
R. Ramy Ratiarison ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Additional Information ◽  
Micro Raman Spectroscopy ◽  
High Temperature Process ◽  
Structural Growth ◽  
Metal Organic ◽  
Insight Into

A unique combination of in situ synchrotron x-ray diffraction and in situ micro-Raman spectroscopy was used to study the growth process of YBa2Cu3O6+x films obtained by metal organic decomposition using trifluoroacetate precursor on LaAlO3 substrates. The techniques give complementary information: x-ray diffraction gives insight into the structural growth, whereas micro-Raman spectroscopy gives information of the chemical composition with additional information on the texture. To perform both experiments in situ, a special high-temperature process chamber was designed.

Structural changes of Ce–Pr–O oxides in hydrogen: a study by in situ X-ray diffraction and Raman spectroscopy

2003 ◽  
Vol 13 (12) ◽  
pp. 3017-3020 ◽  
Author(s):  
Sylvie Rossignol ◽  
Francois Gérard ◽  
Danielle Mesnard ◽  
Charles Kappenstein ◽  
Daniel Duprez
Keyword(s):  
Raman Spectroscopy ◽  
Structural Changes ◽  
X Ray Diffraction ◽  
X Ray
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