Photocatalyst Composites of Luminescent Trinuclear Copper(I) Pyrazolate Complexes/Titanium Oxide for Degradation of 2,4-Dichlorophenoxyacetic Acid

Abstract:

Here phosphorescent trinuclear copper (I) pyrazolate complexes ([Cu₃Pz₃]), synthesized from 3,5-dimethyl and 4-(3,5-dimethoxybenzyl)-3,5-dimethyl pyrazole ligands for complexes [Cu₃Pz₃]₁ and [Cu₃Pz₃]₂, were successfully impregnated into TiO₂ with concentration of 0.1 mol%. These luminescent photocatalyst composites ([Cu₃Pz₃]_{1 or 2}/TiO₂) gave 60% and 49% of dichlorophenoxyacetic acid (2,4-D) degradation after 1 h for [Cu₃Pz₃]₁/TiO₂ and [Cu₃Pz₃]₂/TiO₂, while TiO₂ only showed 48%. The higher activity observed on [Cu₃Pz₃]₁/TiO₂ than the TiO₂ would come from the efficient reduction of electron-hole recombination, while less dispersion of complex [Cu₃Pz₃]₂ with more rigid structure compared to complex [Cu₃Pz₃]₁ gave similar activity of the [Cu₃Pz₃]₂/TiO₂ to the TiO₂.

• Periodical: Materials Science Forum (Volume 846)
• Pages: 697-701
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.846.697
• Online since: March 2016
• Authors: Hendrik O. Lintang, Nur Azmina Roslan, Noratika Ramlan, Mustaffa Shamsuddin, Leny Yuliati*
• Keywords: 2,4-dichlorophenoxyacetic Acid, Composite, Degradation, Metal Complex, Photocatalyst

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