Photocatalytic properties of Mn-doped NiO spherical nanoparticles synthesized from sol-gel method

被引：106
|
作者：
Sankar, S. [1 ]
Sharma, Sanjeev K. [1 ]
An, Namhyun [1 ]
Lee, Hwauk [1 ]
Kim, Deuk Young [1 ]
Im, Young Bin [2 ]
Cho, Yung Duk [2 ]
Ganesh, R. Sankar [3 ]
Ponnusamy, S. [3 ]
Raji, P. [4 ]
Purohit, L. P. [5 ]
机构：
[1] Dongguk Univ Seoul, Dept Semicond Sci, Semicond Mat & Device Lab, Seoul 100715, South Korea
[2] Dongguk Univ Seoul, Coll Dharma, Seoul 04620, South Korea
[3] SRM Univ, Dept Phys & Nanotechnol, Chennai 603203, Tamil Nadu, India
[4] Mepco Schlenk Engn Coll, Dept Phys, Sivakasi 626005, Tamil Nadu, India
[5] Gurukul Kangri Vishwavidyalaya, Dept Phys, Haridwar 249404, India
来源：
OPTIK | 2016年 / 127卷 / 22期
关键词：
Mn-doped NiO nanoparticles; Sol-gel method; Optical properties; Methylene blue dye degradation; Catalytic properties; NICKEL-OXIDE; TIO2; NANOPARTICLES; FACILE SYNTHESIS; DEGRADATION; LIGHT; PERFORMANCE; FILMS; NANOCOMPOSITES; COMPOSITES; GROWTH;
D O I：
10.1016/j.ijleo.2016.08.126
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Mn-doped NiO (NiO:Mn) nanopowders were synthesized from an inexpensive sol-gel method. The XRD peak profile analysis of NiO:Mn nanopowders confirmed the cubic structure. The spherical nanoparticles of NiO:Mn were evaluated from the SEM and TEM analysis and the grain size decreased as the Mn concentration increased. The average crystallite size decreased from 35.44 nm to 30.5 nm and the bandgap increased from 3.79 eV to 3.95 eV as the Mn concentration increased from 0 wt.% to 4 wt.%. The photocatalytic properties of NiO:Mn nanopowders were measured for the lowest and highest Mn dopant concentrations (Mn: 0 & 4 wt.%) by using the methylene blue dye under UV illumination. The NiO:Mn (Mn: 4 wt.%) nanoparticles showed the highest photocatalytic activity due to the highest activation sites. Therefore, it is revealed that the Mn: 4 wt.% nanoparticles are observed to be more suitable for the photocatalytic activity of methylene blue dye degradation. (C) 2016 Elsevier GmbH. All rights reserved.
引用
收藏
页码：10727 / 10734
页数：8
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