Photoactive behavior of polyacrylonitrile fibers based on silver and zirconium co-doped titania nanocomposites: Synthesis, characterization, and comparative study of solid-phase photocatalytic self-cleaning

2012 ◽  
Vol 127 (5) ◽  
pp. 3778-3789 ◽  
Author(s):  
Hadi Fallah Moafi ◽  
Abdollah Fallah Shojaie ◽  
Mohammad Ali Zanjanchi
Keyword(s):  
Comparative Study ◽  
Solid Phase ◽  
Self Cleaning ◽  
Doped Titania ◽  
Co Doped

EELS study of Fe- or Co-doped titania nanosheets

Microscopy ◽  
2014 ◽  
Vol 64 (2) ◽  
pp. 77-85 ◽  
Author(s):  
Megumi Ohwada ◽  
Koji Kimoto ◽  
Yasuo Ebina ◽  
Takayoshi Sasaki
Keyword(s):  
Doped Titania ◽  
Co Doped

scholarly journals A Comparative Study on the Optoelectronic Performance of Undoped, Mg-doped and F/Mg Co-doped ZnO Nanocrystalline Thin Films

2021 ◽  
Vol 13 (6) ◽  
pp. 06016-1-06016-6
Author(s):  
Warda Darenfad ◽  
◽  
Noubeil Guermat ◽  
Kamel Mirouh ◽  
◽  
...  
Keyword(s):  
Thin Films ◽  
Comparative Study ◽  
Doped Zno ◽  
Nanocrystalline Thin Films ◽  
Co Doped ◽  
Mg Doped

scholarly journals A Comparative Study of AgX (X = Cl-, Br-, I- and N3-) Solid-Phase Reactors for Flow-Injection Determination of Cyanide in Electroplating Wastewater

2008 ◽  
Vol 24 (5) ◽  
pp. 669-672 ◽  
Author(s):  
Meissam NOROOZIFAR ◽  
Mozhgan KHORASANI-MOTLAGH ◽  
Aboozar TAHERI ◽  
Rohollah ZARE-DORABEI
Keyword(s):  
Comparative Study ◽  
Flow Injection ◽  
Solid Phase ◽  
Electroplating Wastewater

New viewpoint about the persistent luminescence mechanism of Mn2+/Eu3+ co-doped Zn2GeO4

2019 ◽  
Vol 33 (32) ◽  
pp. 1950389
Author(s):  
Zhou Wang ◽  
Zhiting Tang ◽  
Xueling Peng ◽  
Chuanhui Xia ◽  
Feng Wang
Keyword(s):  
Band Structure ◽  
Density Functional ◽  
Solid Phase ◽  
Density Functional Theory Calculation ◽  
Phase Method ◽  
Trap Level ◽  
Persistent Luminescence ◽  
Green Fluorescence ◽  
Co Doped ◽  
Trap Levels

In this work, Mn[Formula: see text]Eu[Formula: see text] co-doped Zn2GeO4 (Zn2GeO4:Mn[Formula: see text] was prepared by high-temperature solid phase method. Compared with common fluorescent materials Zn2GeO4:Mn[Formula: see text], Zn2GeO4:Mn[Formula: see text] could not only emit strong green fluorescence of 535 nm, but also maintain excellent persistent luminescence performance. Through Density Functional Theory calculation, we obtained the fine band structure of Zn2GeO4:Mn[Formula: see text]. The results of the band structure were consistent with the experimental spectral data. On this basis, we proposed a new luminescence mechanism model of Zn2GeO4:Mn[Formula: see text] to explain the phenomena observed in experiment reasonably, though which was not completely consistent with previous works. When Zn2GeO4:Mn[Formula: see text] was excited, electron–hole separation occurred in the valence band (VB), and the electron transitioned to the conduction band (CB) directly. Through CB, the electron was trapped by trap levels (7F[Formula: see text]F5 of Eu[Formula: see text] and maintained metastable for a long time. Under the action of thermal stimulation, electron returned to CB from the trap level slowly. The electron was captured again by the 4T2(D) level of Mn[Formula: see text]. Then the electron transitioned down toward VB and recombined with the previous hole and emitted a photon with 535 nm (afterglow). The samples were being irradiated, trap levels accommodated the excited electrons to saturation. More electrons excited into the CB could not be captured by the trap levels any more. They were captured directly by the 4T2(D) and transitioned directly to VB, then emitted green fluorescence.

Structure and physical properties of hydrogenated (Co + Al)-doped ZnO films: Comparative study with co-doped ZnO films

2021 ◽  
Vol 264 ◽  
pp. 114943 ◽  
Author(s):  
Yulia E. Samoshkina ◽  
Irina S. Edelman ◽  
Hsiung Chou ◽  
Hsien-Chi Lin ◽  
Gopeshwar D. Dwivedi ◽  
...  
Keyword(s):  
Comparative Study ◽  
Physical Properties ◽  
Zno Films ◽  
Doped Zno ◽  
Co Doped

Photo-catalytic destruction of acetaldehyde using cobalt, copper co-doped titania dioxide nanoparticles beneath Visible light

2019 ◽  
Vol 10 (3) ◽  
pp. 931-939 ◽  
Author(s):  
Reda M. Mohamed ◽  
Delft. W. Bahnemann ◽  
Amal S. Basaleh ◽  
Razan H. Qadah
Keyword(s):  
Visible Light ◽  
Catalytic Destruction ◽  
Doped Titania ◽  
Co Doped ◽  
Cobalt Copper
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