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5931054 
Journal Article 
Hydrothermal synthesis of manganese oxide and nitrogen doped graphene (NG-MnO2) nanohybrid for visible light degradation of methyl orange dye 
Singh, R; Kumar, M; Tashi, L; Khajuria, H; Sheikh, HaqN 
2019 
1 
Molecular Physics
ISSN: 0026-8976
EISSN: 1362-3028 
117 
18 
2477-2486 
WOS:000478057100006 
MnO2 nanoparticles and its nanocomposite with nitrogen-doped graphene (NG) have been fabricated via simple hydrothermal synthesis procedure using water as a solvent. X-ray diffraction (XRD) analysis of the as-prepared samples was used to ascertain the phase purity and crystallite size. Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) were employed to study the surface features and particle size of the synthesised samples. The photocatalytic ability of the methyl orange (MO) dye with bare MnO2 and its hybrid with nitrogen-doped graphene (NG-MnO2) wer compared with visible light prompted degradation of the dye in absence of these catalysts. The prepared nanohybrid (NG-MnO2) showed improved photocatalytic efficacy as compared to the pure MnO2 nanoparticles. The strong ferromagnetic character of nanohybrid helps in easy separation of catalyst even with a bar magnet. 
Methyl orange; MnO2 nanoparticles; nitrogen-doped graphene; photodegradation; visible light