Assembly of transition metal ion on cellulose surface anchored with azo-Schiff base and its catalytic activity for H2O2 decomposition

Abstract

2015): Assembly of transition metal ion on cellulose surface anchored with azo-Schiff base and its catalytic activity for H 2 O 2 decomposition, Desalination and Water Treatment, A B S T R A C TTo form polymer-supported catalysts, to eliminate excess H 2 O 2 during wastewater treatment, the assembly of metal ion on cellulose was investigated. Cellulose was covalently grafted with reactive azo-Schiff base containing azo-conjugated system, 3,5-bis {2-hydroxyphenyl-5-[(2-sulfate-4-sulfatoethylsulphonyl-azobenzol) methylene amino]} benzoic acid. Metal ions, Co 2+ , Mn 2+ , and Cu 2+ , were anchored to the modified cellulose by controlling assembly. The cellulose-supported complexes were characterized and the catalytic activity for H 2 O 2 was investigated. Elemental analyses of the cellulose supported complexes, MC-Co, MC-Mn, were well agreed with the proposed composition. Three cellulose-supported complexes had strong catalytic activities for H 2 O 2 . H 2 O 2 decomposition rates in 10 min were 84.54% for MC-Co, 94.87%, for MC-Mn, and 77.21% for MC-Cu, respectively. The manganese complex had the strongest catalytic activity among them. The cellulose-supported complexes have potential application in wastewater treatment and biotechnology.

Catalytic reactivity of new Ni(II), Cu(II) and Sn(II) complexes for decolorization of indigo carmine in aqueous solution, high efficiency of copper complex

“…From these applications, A large number of Schiff base complexes exhibit remarkable catalytic activity for enhancing yield and product selectivity. Schiff base complexes show excellent homogeneous and heterogeneous catalytic properties in various reactions such as oxidation of organic compounds, reduction of alkyl and aryl halides, DNA bending, H 2 O 2 decomposition, ester hydrolysis and dyes decolonization from aqueous solutions . Indigo Carmine is one of the mainly dyes used in the textile dyeing.…”