NiAl2O4 nanoparticles: synthesis and characterization through modify sol–gel method and its photocatalyst application

Abstract

In this work, modify sol-gel method was used to synthesize nickel aluminate (NiAl 2 O 4 ) nanoparticles with aid of nickel nitrate hexahydrate and aluminium nitrate nonahydrate as the starting reagents in the presence of ethanol as the solvent. Besides, to examine the effect of different chelate agent such as citric acid monohydrate, oxalic acid, salicylic acid, and malic acid on the morphology and particle size of final products several tests were performed. The structural, morphological, and optical properties of as-obtained products were characterized by techniques such as Fourier transform infrared spectroscopy, X-ray diffraction, energy dispersive X-ray microanalysis, scanning electron microscopy and ultraviolet-visible. The photocatalytic degradation was investigated using methyl orange under visible light irradiation (k [ 400 nm). The resulting degradation rates of the methyl orange were measured to be as high as 90 % in 270 min.

Facile synthesis and enhanced photocatalytic performance of dahlia-like TiO2 structures via an EDA-assisted hydrothermal method

“…ions react with hydroxyl to form Ti(OH) 4 , then dehydration to TiO 2 . The reaction mechanism may be expressed:…”

“…Semiconductor photocatalysts have been widely studied in the past several decades because of their unique size and shape-dependent properties [1][2][3][4][5][6][7]. Among several types of catalyst materials, TiO 2 is a well-known n-type semiconductor material with a wide band gap of 3.2 eV.…”

Pristine and Graphene-Quantum-Dots-Decorated Spinel Nickel Aluminate for Water Remediation from Dyes and Toxic Pollutants

“…Aluminates have high thermal stability, mechanical resistance, hydrophobicity and low surface acidity. Nickel aluminates are one of the most important aluminate materials, and have been studied for their many applications, including electrochemical sensing [1], pigments [2], catalysts [3][4][5][6][7], photocatalysts [8][9][10][11][12], magnetic [13] and refractory materials [14]. NiAl 2 O 4 has also attracted attention as a hydrogen storage material [15,16], oxygen carrier in combustion loop reactors [17] and as a component of supercapacitor electrode materials [18].…”

Novel silver-doped NiTiO3: auto-combustion synthesis, characterization and photovoltaic measurements

“…[1][2][3] Functional inorganic metal titanate of the general formula MTiO 3 (M¼Pb, Ba, Sr, Ni, Fe, Zn, Cu, and Cr) has always been a topic of burgeoning interest largely because they display magnificent dielectric, 4 ferroelectric, 5 pyroelectrical, 6 piezoelectric, 7 magneto restrictive, 8 and electro-optical 9 characteristics. Such superior combination of functional properties ranked them as 'intelligent materials' for the development of sensors, 10,11 microelectronic devices, 12 and photocatalytic application.…”