Study on the photodegradation of some organic dyes by neodymium pyrotitanate nano-sponges

Document Type : Research Article

Authors

1 Department of Chemistry, Sayyed Jamaleddin Asadabadi University

2 Sayyed Jamaleddin Asdabadi University

10.22091/jaem.2026.16833.1054

Abstract

Ln2Ti2O7 (Ln = Nd) nano-sponges were fabricated via a conventional solid state rout at 800 ºC for 8 h when Nd2O3 and TiO2 were used as raw materials. Crystal structural analyses and purity of the obtained materials were analyzed by FullProf program that used profile matching condition with constant scale factor. Field emission scanning electron microscope (FESEM) was applied to study the morphology of the fabricated samples. Ultraviolet – Visible spectroscopy showed that the direct optical band gap energies were 3.40 eV, respectively. The synthesized nanomaterials were used as heterogeneous photocatalysts for the degradation of some water pollutant organic dyes under direct and UVC lights illumination. Malachite green (MG) was used as a typical dye to obtain the optimum photocatalytic degradation conditions. The photocatalytic performance of the as-fabricated samples on the degradation of the pollutant dyes was studied under visible and UVC light irradiations. The photocatalytic reaction yield was 97% at the present conditions. Using the Langmuir–Hinshelwood (L–H) kinetics model, the degradation of MG followed a pseudo-first order kinetic model.

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Advances in Energy and Materials Research

Articles in Press, Accepted Manuscript
Available Online from 28 September 2025

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