PMID- 33736206
OWN - NLM
STAT- MEDLINE
DCOM- 20210322
LR  - 20210322
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 271
DP  - 2021 May
TI  - Evaluation of physicochemical properties and catalytic activity of 
      poly(PMDAH-co-ODA/PPDA) nanocomposites towards the removal of toxic pollutants.
PG  - 129890
LID - S0045-6535(21)00359-3 [pii]
LID - 10.1016/j.chemosphere.2021.129890 [doi]
AB  - Synthesis of Polyimides (PIs) between pyromellitic dianhydride (PMDAH) and 
      oxydianiline (ODA) or p-phenylenediamine (PPDA) in the presence and absence of 
      V(2)O(5) and Ag nanoparticles (NPs) were carried out under N(2) atmosphere at 
      160  degrees C for 5 h with vigorous stirring in N-methylpyrrolidone (NMP) solvent. The 
      prepared PI and its nanocomposites were analyzed by FT-IR spectroscopy, (1)H NMR 
      spectroscopy, FE-SEM, SEM, DSC and TGA like analytical instruments. The FE-SEM 
      showed various surface morphologies for different PI nanocomposites. The particle 
      size of the prepared nanoparticles was calculated as less than 60 nm for Ag and 
      15 nm for V(2)O(5) nanoparticles by HR-TEM. The PI nanocomposites embedded with 
      Ag nanoparticles (P2 and P5) showed a higher thermal stability than the pristine 
      PIs (P1 and P4) and PI/V(2)O(5) nanocomposites (P3 and P6). Further, the possible 
      application of metal (Ag) and metal oxide (V(2)O(5)) NPs embedded PI 
      nanocomposites was assessed on the catalytic reduction of highly toxic Cr(VI), 
      Rhodamine 6G (R6G) dye and p-nitrophenol (NiP) pollutants with the help of a 
      reducing agent (NaBH(4)). The apparent rate constant (k(app)) values were 
      calculated to assess the catalytic efficiency of the prepared PI and its 
      nanocomposites. The PI/Ag nanocomposite (P2) system showed an efficient catalytic 
      reduction than the other systems.
CI  - Copyright (c) 2021 Elsevier Ltd. All rights reserved.
FAU - Sribala, Govindharajan
AU  - Sribala G
AD  - Department of Polymer Technology, Kamaraj College of Engineering and Technology, 
      Madurai, 625 701, Tamilnadu, India.
FAU - Meenarathi, Balakrishnan
AU  - Meenarathi B
AD  - Department of Polymer Technology, Kamaraj College of Engineering and Technology, 
      Madurai, 625 701, Tamilnadu, India.
FAU - Parthasarathy, Vellaichamy
AU  - Parthasarathy V
AD  - Department of Physics, Hindustan Institute of Technology and Science, Padur, 
      Chennai, India.
FAU - Anbarasan, Ramasamy
AU  - Anbarasan R
AD  - Department of Chemical Engineering, National Taiwan University, Taipei, 10617, 
      Taiwan. Electronic address: anbu_may3@yahoo.co.in.
LA  - eng
PT  - Journal Article
DEP - 20210209
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Benzoates)
RN  - 0 (Environmental Pollutants)
RN  - 2Z22T30QZQ (pyromellitic dianhydride)
RN  - 3M4G523W1G (Silver)
SB  - IM
MH  - Benzoates
MH  - Catalysis
MH  - *Environmental Pollutants
MH  - *Metal Nanoparticles
MH  - *Nanocomposites
MH  - Silver
MH  - Spectroscopy, Fourier Transform Infrared
OTO - NOTNLM
OT  - Catalysis
OT  - Cr(VI)
OT  - Polyimides
OT  - R6G dye
OT  - k(app)
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2021/03/20 06:00
MHDA- 2021/03/23 06:00
CRDT- 2021/03/19 01:02
PHST- 2020/11/16 00:00 [received]
PHST- 2021/01/14 00:00 [revised]
PHST- 2021/02/03 00:00 [accepted]
PHST- 2021/03/19 01:02 [entrez]
PHST- 2021/03/20 06:00 [pubmed]
PHST- 2021/03/23 06:00 [medline]
AID - S0045-6535(21)00359-3 [pii]
AID - 10.1016/j.chemosphere.2021.129890 [doi]
PST - ppublish
SO  - Chemosphere. 2021 May;271:129890. doi: 10.1016/j.chemosphere.2021.129890. Epub 
      2021 Feb 9.