Electronic Structure and Chemistry of Iron-Based Metal Oxide Nanostructured Materials: A NEXAFS Investigation of BiFeO3, Bi2Fe4O9, α-Fe2O3, γ-Fe2O3, and Fe/Fe3O4

2008 ◽  
Vol 112 (28) ◽  
pp. 10359-10369 ◽  
Author(s):  
Tae-Jin Park ◽  
Sharadha Sambasivan ◽  
Daniel A. Fischer ◽  
Won-Sub Yoon ◽  
James A. Misewich ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Metal Oxide ◽  
Nanostructured Materials ◽  
Iron Based

Synthesis of Spinel-Metal-Oxide/Biopolymer Hybrid Nanostructured Materials

2010 ◽  
Vol 114 (41) ◽  
pp. 17574-17579 ◽  
Author(s):  
M. A. Garza-Navarro ◽  
A. Torres-Castro ◽  
D. I. García-Gutiérrez ◽  
L. Ortiz-Rivera ◽  
Y. C. Wang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Nanostructured Materials

Revealing the Relationship between Semiconductor Electronic Structure and Electron Transfer Dynamics at Metal Oxide–Chromophore Interfaces

2013 ◽  
Vol 117 (48) ◽  
pp. 25259-25268 ◽  
Author(s):  
Robin R. Knauf ◽  
M. Kyle Brennaman ◽  
Leila Alibabaei ◽  
Michael R. Norris ◽  
Jillian L. Dempsey
Keyword(s):  
Electron Transfer ◽  
Electronic Structure ◽  
Metal Oxide ◽  
Semiconductor Electronic ◽  
The Relationship

Electronic structure and magnetic properties of delta-doped Mn in group IVB metal oxide

2008 ◽  
Vol 41 (11) ◽  
pp. 115004 ◽  
Author(s):  
Xingtao Jia ◽  
Wei Yang ◽  
Hong Li ◽  
Minghui Qin
Keyword(s):  
Magnetic Properties ◽  
Electronic Structure ◽  
Metal Oxide

Bulk-surface relationship of an electronic structure for high-throughput screening of metal oxide catalysts

2016 ◽  
Vol 370 ◽  
pp. 279-290 ◽  
Author(s):  
Joshua Minwoo Kweun ◽  
Chenzhe Li ◽  
Yongping Zheng ◽  
Maenghyo Cho ◽  
Yoon Young Kim ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Metal Oxide ◽  
High Throughput ◽  
High Throughput Screening ◽  
Oxide Catalysts ◽  
Metal Oxide Catalysts ◽  
Bulk Surface ◽  
Relationship Of

A review of photocatalytic characterization, and environmental cleaning, of metal oxide nanostructured materials

2021 ◽  
Vol 30 ◽  
pp. e00343
Author(s):  
Muhammad Ikram ◽  
Mahak Rashid ◽  
Ali Haider ◽  
Sadia Naz ◽  
Junaid Haider ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Nanostructured Materials ◽  
Environmental Cleaning

scholarly journals Features of obtaining the catalyst for the synthesis of carbon nanotubes

2019 ◽  
Vol 81 (2) ◽  
pp. 261-267 ◽  
Author(s):  
E. A. Burakova ◽  
G. S. Besperstova ◽  
M. A. Neverova ◽  
A. G. Tkachev ◽  
N. V. Orlova ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Decomposition ◽  
Metal Oxide ◽  
Specific Surface ◽  
Surface Area ◽  
Nanostructured Materials ◽  
Specific Surface Area ◽  
Oxide System ◽  
Decomposition Stage ◽  
Al2o3 Catalyst

In this paper, the features of obtaining a Co-Mo/Al2O3 catalyst to synthesize carbon nanotubes (CNTs) by thermal decomposition were studied. It was revealed that the duration of the pre-catalyst thermal decomposition stage in the process of developing a metal oxide system has a significant impact on its activity in the synthesis of carbon nanostructured materials by chemical vapor deposition (CVD). It was proved that an effective catalyst for CNTs synthesis can be obtained by through thermal decomposition of the pre – catalyst, without calcination of the metal oxide system. The use of the Co-Mo/Al2O3 catalyst, synthesized in such a way, in the CVD process makes it possible to reduce the cost of synthesized CNTs. Using scanning electron microscopy, it was shown that the size of the grains, and specific surface area of the formed Co-Mo/Al2O3 catalyst depend on the thermal treatment conditions of the pre-catalyst. Under the conditions for the implementation of the pre-catalyst thermal decomposition stage (temperature, volume, duration, etc.), it is possible to contro not only the characteristics of the resulting catalyst (specific surface area, efficiency), but also the characteristics of the CNTs (diameter, degree of defectiveness). In the course of experiments, the optimal modes of implementation of the method for obtaining the Co-Mo/Al2O3 catalyst allowed forming a system with a specific surface area of ~ 108 m2/g. The use of the resulting catalyst in the synthesis of nanostructured materials provides a high specific yield of multi-walled CNTs with a diameter of 8-20 nm and a degree of defectiveness of 0.97.

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