Hybrid adsorption and photocatalysis process for water treatment by nickel molybdate

T. Aloui, N. Fourati, H. Guermazi, C. Zerrouki, S. Guermazi

Abstract

Nickel molybdates were synthesized and tested in photocatalytic applications. Experiments conducted in the dark for one hour, showed a degradation efficiency of 44 % of methylene blue (MB), considered as a model pollutant. This high value was related to the strong adsorption of MB on the oxide particles, due to the synergistic effect of the 2D shape (revealed by scanning electron microscopy) developing a large surface area and their high roughness (estimated from atomic force microscopy measurements). Under visible light for one hour, the degradation efficiency reaches 87%, an improvement of almost 100 % compared to darkness. Attempts to regenerate and reuse nickel molybdate are made four times. The recovery process, which consists of washing particles only with distilled water, is encouraging enough even if not yet optimized.

Keywords

Nickel Molybdate; photocatalytic performance; MB degradation

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IMEKO-TC19-2022-04.pdf

DOI

10.21014/tc19-2022.04

IMEKO TC

TC19 - Environmental Measurements

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