Open AccessCatalytic Reduction of 4-Nitrophenol to 4-Aminophenol using Chitosan Ag-TiO2 Nanocomposite and its Applications in the Removal of Malachite Green by Photodegradation Technique
Author(s) -
N. Anusuya,
C. Pragathiswaran,
J. Violet Mary
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.22794
Subject(s) - chemistry , malachite green , catalysis , photodegradation , nitrobenzene , nanocomposite , chitosan , nuclear chemistry , 4 nitrophenol , selective catalytic reduction , chemical engineering , photocatalysis , organic chemistry , adsorption , engineering
A simple colloidal processing method was used to synthesize chitosan Ag-TiO2 nanocomposite and its use aimed at the catalytic reductionof 4-nitrophenol to 4-aminophenol in the presence of NaBH4 as reductant. The nanocomposite catalyst was characterized using differenttechnquies and revealed its better catalytic ability than pure TiO2. Since the nanocomposites are readily improved from the solution phasewithout centrifugation or filtration. The catalytic activity trials were examined by changing the catalyst dose, concentration of NaBH4,amount of nitrobenzene and temperature. The reduction reactions were affected by the temperature of reaction medium and the concentrationof NaBH4. The photodegradation conditions were optimized by changing different parameters such as irradiation time, dosage, pH andinitial dye concentration.