PMID- 37100050
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230514
LR  - 20230514
IS  - 1361-6528 (Electronic)
IS  - 0957-4484 (Linking)
VI  - 34
IP  - 30
DP  - 2023 May 12
TI  - Study on free and entangled binary metal nanocatalysts for removal of 
      2,4,6-trichlorophenol in aqueous phase: a comparative study.
LID - 10.1088/1361-6528/acd061 [doi]
AB  - The present study highlights the comparative catalytic removal of 
      2,4,6-trichlorophenol (TCP) in the aqueous phase by binary nanoparticles in free 
      as well as entangled forms. In brief, binary nanoparticles comprising Fe-Ni are 
      prepared, characterized, and subsequently entangled in reduced graphene oxide 
      (rGO) for better performances. Optimization studies on the mass of free and 
      rGO-entangled binary nanoparticles with respect to TCP concentration and other 
      environmental factors were carried out. Results suggested that free binary 
      nanoparticles at 40 mg ml(-1)took 300 min to dechlorinate 600 ppm of TCP, whereas 
      rGO-entangled Fe-Ni particles at the same mass took only 190 min to dechlorinate 
      when the pH was maintained at near neutral. In addition, experiments on the reuse 
      of the catalyst with respect to removal efficiency were carried out, and the 
      results implied that, compared to free form, rGO-entangled nanoparticles 
      exemplify more than 98% of removal efficacy even after 5 times of exposure to 600 
      ppm TCP concentration. The reduction in percentage removal was observed after the 
      sixth exposure. A sequential dechlorination pattern was assessed and confirmed 
      using high-performance liquid chromatography. Further, the phenol-enriched 
      aqueous phase is exposed toBacillus licheniformisSL10, which degrades the phenol 
      effectively within 24 h. In conclusion, the prepared binary nanoparticles, both 
      in free as well as in rGO-entangled forms, effectively dechlorinate 2,4,6-TCP 
      contaminations in the aqueous phase, but with differences in removal duration. 
      Entanglement also makes it easier to reuse the catalyst. Furthermore, microbial 
      phenol degradation allows the aqueous phase to be free of 2, 4, and 6-TCP 
      contamination and allows for the reuse of treated water.
CI  - (c) 2023 IOP Publishing Ltd.
FAU - Chris Felshia, S
AU  - Chris Felshia S
AD  - Microbiology Division, CSIR-Central Leather Research Institute, (CLRI), Adyar, 
      Chennai 20, Tamil Nadu, India.
FAU - Gnanamani, A
AU  - Gnanamani A
AUID- ORCID: 0000-0001-5596-3646
AD  - Microbiology Division, CSIR-Central Leather Research Institute, (CLRI), Adyar, 
      Chennai 20, Tamil Nadu, India.
LA  - eng
PT  - Journal Article
DEP - 20230512
PL  - England
TA  - Nanotechnology
JT  - Nanotechnology
JID - 101241272
SB  - IM
OTO - NOTNLM
OT  - adsorption
OT  - bimetallic nanocatalysts
OT  - biodegradation
OT  - dechlorination
OT  - rGO-Fe-Ni
EDAT- 2023/04/27 00:42
MHDA- 2023/04/27 00:43
CRDT- 2023/04/26 18:33
PHST- 2023/01/08 00:00 [received]
PHST- 2023/04/26 00:00 [accepted]
PHST- 2023/04/27 00:43 [medline]
PHST- 2023/04/27 00:42 [pubmed]
PHST- 2023/04/26 18:33 [entrez]
AID - 10.1088/1361-6528/acd061 [doi]
PST - epublish
SO  - Nanotechnology. 2023 May 12;34(30). doi: 10.1088/1361-6528/acd061.