Photodegradation of p-cresol in Aqueous Mn(1%)-Doped ZnO Suspensions

2012 ◽  
Vol 15 (1) ◽  
Author(s):  
Yadollah Abdollahi ◽  
Abdul Halim Abdullah ◽  
Azmi Zakaria ◽  
Zulkarnain Zainal ◽  
Hamid Reza Fard Masoumi ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Visible Light ◽  
Total Organic Carbon ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Irradiation Time ◽  
Light Irradiation ◽  
Uv Visible ◽  
Doped Zno ◽  
Mn Doped

AbstractPhotodegradation of p-cresol was carried out by a 1.0wt% Mn doped ZnO under visible light irradiation. The amount of photocatalyst, concentration of p-cresol and pH were studied as variables. The residue of p-cresol and mineralisation was measured using a UV-visible spectrophotometer and TOC analyzer, respectively. The intermediate was detected by UPLC. The results showed the amount of photocatalyst and concentration of p-cresol was 1.5g/L and 35 ppm respectively. P-cresol photodegradation was favorable in the pH 6-9 range. The detected intermediate was 4-hydroxy-benzaldehyde. TOC studies show that 74% of total organic carbon was removed from solution during irradiation time. Reusability shows no significant reduction in photocatalytic performance in photodegrading p-cresol. This study indicates that 1.0 wt% Mn doped ZnO can remove p-cresol from wastewater under visible light irradiation, and being more economic than UV irradiation could be applied on an industrial scale.

Synthesis of nitrogen-doped ZnO by sol–gel method: characterization and its application on visible photocatalytic degradation of 2,4-D and picloram herbicides

2015 ◽  
Vol 14 (3) ◽  
pp. 536-542 ◽  
Author(s):  
J. J. Macías-Sánchez ◽  
L. Hinojosa-Reyes ◽  
A. Caballero-Quintero ◽  
W. de la Cruz ◽  
E. Ruiz-Ruiz ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Zno Nanoparticles ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Light Irradiation ◽  
Gel Method ◽  
Nitrogen Doped ◽  
Doped Zno

The photocatalytic performance of modified 30% wt. N-ZnO nanoparticles under visible light irradiation was demonstrated by the oxidation of picloram and 2,4-D.

scholarly journals Synthesis, characterization of Ag-doped CdS-WO2 nanocomposite and effects of photocatalytic degradation in RhB under visible light irradiation

2022 ◽  
Author(s):  
G. Roshini ◽  
V. Sathish ◽  
S. Manigandan ◽  
A. Tamilarasi ◽  
E. Priyanka
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Irradiation Time ◽  
Light Irradiation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Abstract In this paper, the highly stable Ag/CdS-WO2 nanocomposite was fabricated by a facile and capping agent-free hydrothermal technique. The fabricated Ag doped CdS-WO2 nanocomposite were characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and UV-vis diffuse reflectance (DRS) spectroscopy. The photocatalytic performance of synthesized photocatalysts was evaluated for the photodegradation of rhodamine B (Rh B) under visible light irradiation (VLI). The parameters used for the optimization of the photocatalyst were pH, catalyst dose, oxidant dose, and irradiation time. Based on this, a possible reaction mechanism for the enhancement of photocatalytic activity of Ag/CdS-WO2 has been proposed. Hence, we have a tendency to believe it might be a promising material that may be used for the photodegradation of organic pollutants present in wastewater.

N-doped ZnO–MoS2 binary heterojunctions: the dual role of 2D MoS2 in the enhancement of photostability and photocatalytic activity under visible light irradiation for tetracycline degradation

2017 ◽  
Vol 1 (6) ◽  
pp. 1093-1106 ◽  
Author(s):  
Suneel Kumar ◽  
Vipul Sharma ◽  
Kaustava Bhattacharyya ◽  
Venkata Krishnan
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Dual Role ◽  
Light Irradiation ◽  
Tetracycline Degradation ◽  
Doped Zno

In this work, we demonstrate the dual role played by MoS2 in enhancing the photocatalytic performance and in increasing the photostability of the N-ZnO material.

scholarly journals Cu/TiO2 composite nanofibers with improved photocatalytic performance under UV and UV-visible light irradiation

2021 ◽  
pp. 101644
Author(s):  
Petronela Pascariu ◽  
Corneliu Cojocaru ◽  
Petrisor Samoila ◽  
Anton Airinei ◽  
Niculae Olaru ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Composite Nanofibers ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Uv Visible

scholarly journals Synthesis, characterization of Ag doped CdS-WO2 nanocomposite and effects of photocatalytic degradation in RhB under visible light irradiation

2022 ◽  
Author(s):  
G. Roshini ◽  
Sathish Vilvanathan ◽  
S. Manigandan ◽  
A. Tamilarasi ◽  
E. Priyanka
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Irradiation Time ◽  
Light Irradiation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

In this paper, the highly stable Ag/CdS-WO2 nanocomposite was fabricated by a facile and capping agent-free hydrothermal technique. The fabricated Ag-doped CdS-WO2 nanocomposite was characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and UV-vis diffuse reflectance (DRS) spectroscopy. The photocatalytic performance of synthesized photocatalysts was evaluated for the photodegradation of rhodamine B (RhB) under visible light irradiation (VLI). The parameters used for the optimization of the photocatalyst were pH, catalyst dose, oxidant dose, and irradiation time. Based on this, a possible reaction mechanism for the enhancement of the photocatalytic activity of Ag/CdS-WO2 has been proposed. Hence, we have a tendency to believe it might be a promising material that may be used for the photodegradation of organic pollutants present in wastewater.

CdS/Ag2S/g-C3N4 ternary composites with superior photocatalytic performance for hydrogen evolution under visible light irradiation

2021 ◽  
Vol 50 (9) ◽  
pp. 3253-3260 ◽  
Author(s):  
Shan Zhao ◽  
Junbiao Wu ◽  
Yan Xu ◽  
Xia Zhang ◽  
Yide Han ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Synergic Effect

CdS/Ag2S/g-C3N4 ternary composites showed excellent photocatalytic performance toward H2 evolution. Their improved photocatalytic activity could be attributed not only to the synergic effect, but also to the introduction of Ag2S.

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