Adsorption and photocatalytic properties of NiO nanoparticles synthesized via a thermal decomposition process

被引：94

作者：

Ramesh, Martha ^{[1
]}

Rao, Martha Purna Chander ^{[2
]}

Anandan, Sambandam ^{[2
]}

Nagaraja, Hosakoppa ^{[1
]}

机构：

[1] Natl Inst Technol Karnataka, Dept Phys, Mat Res Lab, Mangalore 575025, India

[2] Natl Inst Technol, Dept Chem, Nanomat & Solar Energy Convers Lab, Tiruchirappalli 620015, India

来源：

JOURNAL OF MATERIALS RESEARCH | 2018年 / 33卷 / 05期

关键词：

adsorption; kinetics; optical properties; METHYLENE-BLUE; AZO-DYE; OXIDE NANOPARTICLES; ASSISTED SYNTHESIS; WASTE-WATER; DEGRADATION; DECOLORIZATION; OXIDATION;

D O I：

10.1557/jmr.2018.30

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

NiO nanoparticles (NPs) were synthesized at different annealing temperatures via a thermal decomposition process and characterized using X-ray diffraction, scanning electron microscopy, and UV-vis spectroscopy. The NiO NPs prepared at higher annealing temperature (400 degrees C) were shown excellent adsorption and photocatalytic activity toward textile dyes reactive black 5 (RB-5) and methylene blue (MB). About 87.2% of RB-5 in 60 min and 70.2% of MB in 5 h was removed using NiO NPs synthesized at 400 degrees C. The photocatalytic degradation of MB was found to increase with an increase in the annealing temperature of the catalyst. Moreover, the kinetic study revealed that the adsorption and photocatalytic activity of NiO NPs followed the second and first-order kinetics, respectively. The enhanced performance of NiO NPs toward dye removal might be related to its optical and structural properties.

引用

页码：601 / 610

页数：10

共 47 条

[1] Evidence of Fenton-like reaction with active chlorine during the electrocatalytic oxidation of Acid Yellow 36 azo dye with Ir-Sn-Sb oxide anode in the presence of iron ion [J].