High photocatalytic activity over starfish-like La-doped ZnO/SiO2 photocatalyst for malachite green degradation under visible light

2020 ◽  
Author(s):  
Shuo Wang ◽  
Zhenke Chen ◽  
Ying Zhao ◽  
Chenlu Sun ◽  
Jianye Li
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Malachite Green ◽  
High Photocatalytic Activity ◽  
Doped Zno ◽  
La Doped

One-pot synthesis of the visible light sensitive C-doped ZnO@g-C3N4 for high photocatalytic activity through Z-scheme mechanism

Optik ◽  
2019 ◽  
Vol 186 ◽  
pp. 34-40 ◽  
Author(s):  
Abdullah M. Alhanash ◽  
Khadija S. Al-Namshah ◽  
Sahar K. Mohamed ◽  
Mohamed S. Hamdy
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
High Photocatalytic Activity ◽  
One Pot ◽  
One Pot Synthesis ◽  
Doped Zno

scholarly journals Highly Active Rare-Earth-Metal La-Doped Photocatalysts: Fabrication, Characterization, and Their Photocatalytic Activity

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
S. Anandan ◽  
Y. Ikuma ◽  
V. Murugesan
Keyword(s):  
Photocatalytic Activity ◽  
High Surface ◽  
Sol Gel ◽  
Earth Metal ◽  
High Photocatalytic Activity ◽  
Highly Active ◽  
Photocatalytic Activities ◽  
Doped Zno ◽  
Photonic Efficiency ◽  
La Doped

Efficient La-doped TiO2photocatalysts were prepared by sol-gel method and extensively characterized by various sophisticated techniques. The photocatalytic activity of La-doped TiO2was evaluated for the degradation of monocrotophos (MCPs) in aqueous solution. It showed higher rate of degradation than pure TiO2for the light of wavelength of 254 nm and 365 nm. The rate constant of TiO2increases with increasing La loading and exhibits maximum rate for 1% La loading. The photocatalytic activities of La-doped TiO2are compared with La-doped ZnO; the reaction rate of the former is ~1.8 and 1.1 orders higher than the latter for the lights of wavelength 254 nm and 365 nm, respectively. The relative photonic efficiency of La-doped TiO2is relatively higher than La-doped ZnO and commercial photocatalysts. Overall, La-doped TiO2is the most active photocatalyst and shows high relative photonic efficiencies and high photocatalytic activity for the degradation of MCP. The enhanced photocatalytic activity of La-doped TiO2is mainly due to the electron trapping by lanthanum metal ions, small particle size, large surface area, and high surface roughness of the photocatalysts.

scholarly journals Construction of La-doped TiO2@La-doped ZnO–B-doped reduced graphene oxide ternary nanocomposites for improved visible light photocatalytic activity

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43424-43431 ◽  
Author(s):  
Mojtaba Rostami
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Schematic Diagram ◽  
Sunlight Irradiation ◽  
Reduced Graphene ◽  
Doped Zno ◽  
Band Gap Narrowing ◽  
La Doped ◽  
Visible Light Photocatalytic

Schematic diagram of proposed photocatalysis and band-gap narrowing mechanism, photo-excited and accepted electrons, adsorption of MB, and e− and h+ transfer of La/TiO2@La/ZnO–B–RGO TNCs under sunlight irradiation.

Photocatalytic Activity of Fe-Doped ZnO/Montmorillonite Nanocomposite for Degradation of Malachite Green

2015 ◽  
Vol 827 ◽  
pp. 19-24 ◽  
Author(s):  
Nur Afifah ◽  
Nadia Febiana Djaja ◽  
Rosari Saleh
Keyword(s):  
Photocatalytic Activity ◽  
Malachite Green ◽  
Organic Dyes ◽  
Uv Light ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Spin Resonance ◽  
Doped Zno ◽  
Co Precipitation

In this study, the photocatalytic activity of pure Fe- doped ZnO and Fe- doped ZnO/Montmorillonite nanocomposite has been investigated for the degradation of malachite green under UV light irradiation. Both photocatalysts were synthesized using co-precipitation method and characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier-transform infrared absorption, and electron spin resonance. The results showed that the photocatalytic efficiency is better in the presence of montmorillonite compared to pure Fe- doped ZnO. To detect the possible reactive species involved in degradation of organic dyes control experiments with introducing scavengers into the solution of organic dyes were carried out. It is found that electron plays an important role in the degradation of malachite green.

Effect of Metal Gradient In Nano Wall of Stratified Type Photocatalyst

2009 ◽  
Vol 631-632 ◽  
pp. 339-344
Author(s):  
Tsugumi Hayashi ◽  
Yohei Baba ◽  
Toshiharu Taga ◽  
Shun Yokoyama ◽  
Hiroaki Suzuki ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Detailed Analysis ◽  
Crystalline Structure ◽  
Visible Light Irradiation ◽  
High Photocatalytic Activity ◽  
Core Shell ◽  
Shell Type ◽  
Metal Element ◽  
Egg Shell

Objective of study was the development of core-shell type ZnS-CdS photocatalyst with the stratified morphology. To form the stratified morphology, condition of the precursor is extremely important. For this purpose, three types of precursors, thus core-shell type, egg-shell type and uniform type, was tried to synthesize by utilizing the results of the calculation. The size of the synthesized precursor particles was about 40-100 nm. Main phase of the particle was gradually changed from ZnO (pH8.0) to Cd(OH)2 (pH9.5). Detailed analysis of the synthesized precursor was clearly demonstrated that these have the crystalline structure and each metal element was co-existed in one particle. Therefore, it could be concluded that core-shell type or uniform type precursor was successfully synthesized. Core-shell type ZnS-CdS stratified photocatalyst could be successfully synthesized by sulfurization for 1h, and it shows the high photocatalytic activity under visible light irradiation.

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