Photocatalytic efficiency of lanthanide-doped zinc oxide for degradation of methylene blue dye

Mohd Sabri Mohd Ghazali, . and Wan Rafizah Wan Abdullah, . and Wan Mohd Norsani Wan Nik, . and Maishara Syazrinni Rooshde, . and Noradhiha Farahin Ibrahim, . Photocatalytic efficiency of lanthanide-doped zinc oxide for degradation of methylene blue dye. pp. 153-161. ISSN 1823-8556

Photocatalytic treatment of dyeing wastewater using zinc oxide (ZnO) is a promising approach due to its economic viability energy efficiency and environmental friendliness. In order to improve the environmental sustainability of existing photocatalysis based treatment technology doping technique is performed on pristine semiconductor material to produce highly efficient photocatalyst. In this study the potential use of lanthanide (Ce Er La and Pr) -doped ZnO as photocatalyst powder have been investigated for the degradation of methylene blue (MB) dye solution. Powder form photocatalyst was successfully prepared by doping ZnO at 1 mol of lanthanides through combination of citrate gel and solid state means. The synthesized lanthanide-doped ZnO photocatalyst powder was characterised by using XRD SEM and EDS. The photocatalyst of various loads (0.5 - 2.0 g/L) was used to induce photodegradation of 10 mg/L MB dye solution under UVlight illumination up to 180 minutes. The treated MB solution was characterized by using UV-Visible Spectrophotometer. The findings showed that the photocatalytic efficiency increased with the increase in catalyst loadings. The highest photocatalytic efficiency (94.32) was achieved by treatment using 2.0 g/L of 1 mol Er doped ZnO. The list of photocatalysts in the order of decreasing photocatalytic efficiency is Er doped ZnO (94.32) Ce doped ZnO (93.81) La doped ZnO (72.16) and Pr doped ZnO (67.67). The Er and Ce doped ZnO based photocatalysts have proven efficiency to induce oxidation of organic dye in wastewater and they are indeed promising candidates for future solar-driven photocatalyst.

Full text available from: Official URL: http://jssm.umt.edu.my/wp-content/uploads/sites/51...

Abstract

Photocatalytic treatment of dyeing wastewater using zinc oxide (ZnO) is a promising approach due to its economic viability energy efficiency and environmental friendliness. In order to improve the environmental sustainability of existing photocatalysis based treatment technology doping technique is performed on pristine semiconductor material to produce highly efficient photocatalyst. In this study the potential use of lanthanide (Ce Er La and Pr) -doped ZnO as photocatalyst powder have been investigated for the degradation of methylene blue (MB) dye solution. Powder form photocatalyst was successfully prepared by doping ZnO at 1 mol of lanthanides through combination of citrate gel and solid state means. The synthesized lanthanide-doped ZnO photocatalyst powder was characterised by using XRD SEM and EDS. The photocatalyst of various loads (0.5 - 2.0 g/L) was used to induce photodegradation of 10 mg/L MB dye solution under UVlight illumination up to 180 minutes. The treated MB solution was characterized by using UV-Visible Spectrophotometer. The findings showed that the photocatalytic efficiency increased with the increase in catalyst loadings. The highest photocatalytic efficiency (94.32) was achieved by treatment using 2.0 g/L of 1 mol Er doped ZnO. The list of photocatalysts in the order of decreasing photocatalytic efficiency is Er doped ZnO (94.32) Ce doped ZnO (93.81) La doped ZnO (72.16) and Pr doped ZnO (67.67). The Er and Ce doped ZnO based photocatalysts have proven efficiency to induce oxidation of organic dye in wastewater and they are indeed promising candidates for future solar-driven photocatalyst.

[error in script]

Item Type:	Article
AGROVOC Term:	Dyes
AGROVOC Term:	Degradation
AGROVOC Term:	Catalytic activity
AGROVOC Term:	Wastewater treatment
AGROVOC Term:	Efficiency
AGROVOC Term:	Sustainability
AGROVOC Term:	Lanthanides
AGROVOC Term:	Photodegradation
AGROVOC Term:	Catalysts
AGROVOC Term:	Adsorption
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24605

Actions (login required)

View Item