Abstract
2-nitroaniline (2-NA) is highly toxic and environmental contaminant. It is reduced to less toxic and environmental benign product o-phenylenediamine by using different reducing agents like sodium borohydride, potassium borohydride, or hydrazine hydrate in the presence of various catalytic systems. These catalytic systems have various advantages and drawbacks. Silica-supported gold nanoparticles are frequently reported catalyst for the reduction of 2-nitroaniline in aqueous medium. In this review article, different catalytic systems reported for reduction of o-nitroaniline under various reaction conditions have been discussed. The critical review of the recent research progress for development of novel catalysts used for the reduction of 2-nitroaniline has been provided here.
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Abbreviations
- 2-Nitroaniline:
-
2-NA
- o-phenylenediamine:
-
o-PDA
- Sodium borohydride:
-
NaBH4
- Potassium borohydride:
-
KBH4
- Trimethoxysilyl propyl ethylenediamine:
-
TSD
- Iron oxide:
-
Fe3O4
- Nanowires:
-
NW
- Nickel-Tin:
-
Ni-Sn
- Alumina:
-
Al2O3
- Silica:
-
SiO2
- Metal nanoparticles:
-
MNPs
- Hollow silica nanospheres:
-
HSN
- Tetrachloro aurate trihydrate:
-
HAuCl4.3H2O
- Dodecyl trimethoxysilane:
-
DTMS
- 3-aminopropyl triethoxy silane:
-
KH
- Graphene oxide:
-
GO
- Reduced graphene oxide:
-
RGO
- Surface plasmon resonance wavelength:
-
λSPR
- 2-mercapto pyridine:
-
2-MPy
- Polystyrene:
-
PS
- Polyvinyl pyridine:
-
PVP
- Polydopamine:
-
PDA
- N-isopropylacrylamide:
-
NIPAM
- Methacrylic acid:
-
MAA
- Induction time:
-
IT
- Borohydride:
-
BH4 −1
- Glutathione:
-
GS
- Volume phase transition temperature:
-
VPTT
- Cadmium sulfide:
-
CdS
- Ammonium formate:
-
HCOONH4
- Titanium oxide:
-
TiO2
- Polyvinylpyrolidone:
-
PVPL
- Fibrous silica:
-
FS
- Nanoplates:
-
NPl
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Acknowledgements
Authors are thankful to the university of the Punjab, Lahore, Pakistan and Higher Education Commission, Pakistan for financial support under research grant for fiscal year 2015–2016 [Grant Number: D/999/EST.I] and research grant under National Research Program for Universities [No. 20-3995/WRPU/R&D/HEC/14/1212] respectively.
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Naseem, K., Begum, R. & Farooqi, Z.H. Catalytic reduction of 2-nitroaniline: a review. Environ Sci Pollut Res 24, 6446–6460 (2017). https://doi.org/10.1007/s11356-016-8317-2
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DOI: https://doi.org/10.1007/s11356-016-8317-2