Piezo-photocatalytic Activity of Bi0.5Na0.5TiO3@TiO2 Composite Catalyst with Heterojunction for Degradation of Organic Dye Molecule

2020 ◽  
Vol 124 (44) ◽  
pp. 24126-24134
Author(s):  
Xingang Xu ◽  
Xiujuan Lin ◽  
Fanghui Yang ◽  
Shifeng Huang ◽  
Xin Cheng
Keyword(s):  
Photocatalytic Activity ◽  
Organic Dye ◽  
Composite Catalyst ◽  
Dye Molecule

Triggered emission of indistinguishable photons from an organic dye molecule

2021 ◽  
Vol 118 (20) ◽  
pp. 204002
Author(s):  
Pietro Lombardi ◽  
Maja Colautti ◽  
Rocco Duquennoy ◽  
Ghülam Murtaza ◽  
Prosenjit Majumder ◽  
...  
Keyword(s):  
Organic Dye ◽  
Dye Molecule

scholarly journals Enhancing photocatalytic activity of titanium dioxide through incorporation of MIL-53(Fe) toward degradation of organic dye

2018 ◽  
Vol 66 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Nurul Wafa Othman ◽  
Hasmira Radde ◽  
Perng Yang Puah ◽  
Yee Soon Ling ◽  
Pak Yan Moh
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Organic Dye

scholarly journals On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions

2018 ◽  
Vol 17 (6) ◽  
pp. 521-527
Author(s):  
V. A. Gorbunova ◽  
L. M. Sliapniova
Keyword(s):  
Photocatalytic Activity ◽  
Oxidation Reaction ◽  
High Photocatalytic Activity ◽  
Organic Dye ◽  
Iron Ions ◽  
Physico Chemical ◽  
Photocatalytic System ◽  
Initial Suspension ◽  
Hydrolysis Of ◽  
Chemical Water

. The photocatalytic activity of three systems, promising for chemical water purification technologies, was experimentally compared, based on a combination of titanium dioxide/(Fe(II, III)), applying to the model oxidation reaction of methylorange organic dye in an aqueous medium. Herewith the cases of photocatalytic systems were investigated, which are based on: a) titania hydrosol obtained by hydrolysis of titanium isobutylate; b) a similar hydrosol with addition of Fe(III) ions; c) suspension of ilmenite powder based on FeTiO3. As a result of the investigation, the increase of the rate of destruction of methylorange by more than two times was found in the system with the introduction of a small amount of iron ions into initial suspension of the TiO2 hydrosol (at the obtaining a medium with the Fe3+ concentration up to 3.7 × 10–5 M). In the photocatalytic system, based on the suspension of pretreated (with suphation and calcination) ilmenite powder, enough high photocatalytic activity (the degree of methylorange decomposition up to 77 %) was measured but at a higher exposure than for the case of systems based on the TiO2 hydrosol. For the photocatalytic systems of the type being investigated, a possible mechanism of increasing their oxidative activity was briefly considered, which requires an additional physico-chemical analysis.

scholarly journals WO3/Ag2CO3 Mixed Photocatalyst with Enhanced Photocatalytic Activity for Organic Dye Degradation

ACS Omega ◽  
2021 ◽  
Author(s):  
Mei Zhou ◽  
Xuemei Tian ◽  
Hao Yu ◽  
Zhonghua Wang ◽  
Chunguang Ren ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Dye Degradation ◽  
Organic Dye ◽  
Organic Dye Degradation

Effect of Calcination Temperature on Photocatalytic Degradation Performance of Electrospun β-Ga2O3 Nanofibers

2021 ◽  
Vol 21 (7) ◽  
pp. 4016-4021
Author(s):  
Myeongjun Ji ◽  
Jeong Hyun Kim ◽  
Cheol-Hui Ryu ◽  
Young-In Lee
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Crystallite Size ◽  
Calcination Temperature ◽  
Composite Nanofibers ◽  
Physicochemical Analysis ◽  
Gallium Nitrate ◽  
Efficient Charge ◽  
Higher Temperature ◽  
Dye Molecule

In the present work, Ga2O3 nanofibers were successfully synthesized by electrospinning a solution of polyvinylpyrrolidone (PVP) and gallium nitrate, followed by temperature-controlled calcination treatment of the as-spun PVP and gallium nitrate composite nanofibers. The crystallinity and crystallite size of the Ga2O3 nanofibers can be readily controlled by varying the calcination temperature. From the physicochemical analysis results of the synthesized nanofiber, it was found that the nanofiber calcined at a higher temperature showed a higher crystallinity and a larger crystallite size. The photocatalytic degradation results on rhodamine-B (Rho B) revealed that the photocatalytic activity of the Ga2O3 nanofibers can be improved by optimizing the conflicting characteristics, crystallinity and crystallite size, through the control of the calcination temperature. The photocatalytic activity of a nanofiber calcined at 800 °C for the degradation of Rho B under ultraviolet irradiation exhibits 2.39 and 1.16 times higher than that of nanofibers synthesized at 700 °C and 900 °C, respectively, which is ascribed to relatively efficient charge transfer and dye molecule adsorption by its proper crystallinity and crystallite size.

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