Nano-Fe3O4@ZrO2-SO3H as Highly Efficient Recyclable Catalyst for the Green Synthesis of Fluoroquinolones

Nakhaei, Ahmad; Ramezani, Shirin; Shams-Najafi, Sayyed Jalal; Farsinejad, Sadaf

doi:10.2174/1570178615666171226162735

Cited by 7 publications

(1 citation statement)

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“…The peak seen at 3517 cm −1 also shows water molecules absorbed on the nanoparticles. As can be seen, the characterized peaks are related to the presence of both ZrO 2 and Fe 3 O 4 nanoparticles; both nanoparticles exist in the structure of Zr©Fe core‐shell nanoparticles 46,47 …”

Section: Resultsmentioning

confidence: 91%

The supplement role of iron oxide and zirconium oxide nanoparticles as an advanced composite compound for enhancing the efficiency of thin‐film nanocomposite membranes

Karimi

Homayoonfal

2020

Polymers for Advanced Techs

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In this research, to enhance the efficiency of polyacrylonitrile, iron oxide (Fe3O4) nanoparticles were added to membrane matrix and M(0,1) (PA/FePAN) membrane was fabricated. To boost the effectiveness, the iron oxide/zirconium oxide composite nanoparticles (Zr©Fe) were added to the superficial polyamide layer to synthesize M(1,0) (Zr©FePA/PAN) membrane. In order to investigate the supplement role of Fe3O4 and Zr©Fe nanoparticles, both nanoparticles were added to PAN substrate and PA superficial layer, respectively, to fabricate M(1,1) (Zr©FePA/FePAN) membrane. The performance of nanocomposite membranes was compared with that of M(0,0) (PA/PAN) raw membrane. The results indicated that the contact angle of M(0,0), M(0,1), M(1,0), and M(1,1) membranes was 38, 32, 28, and 21, respectively. Presence of nanoparticles enhanced the membrane porosity, such that the porosity of M(0,0), M(1,0), M(0,1), and M(1,1) membranes was 24%, 27%, 30%, and 33%, respectively. MWCO for M(0,0), M(0,1), M(1,0), and M(1,1) membranes was 610, 595, 380, and 330 Dalton, respectively. Presence of nanoparticles reduced fouling from 22% for M(0,0) membrane to zero for M(1,1) membrane. Presence of Fe3O4 nanoparticles and Zr©Fe composite nanoparticles concurrently in both membrane layers eventually caused M(1,1) to have around 23% greater flux and 68% higher efficiency for cephalexin rejection compared to M(0,0).

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Section: Resultsmentioning

confidence: 91%