Efficient degradation of rhodamine B by magnetically separable ZnS–ZnFe2O4 composite with the synergistic effect from persulfate

Boyuan Zhu, Hao Cheng, Jianfeng Ma, Yong Kong, Sridhar Komarneni

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Novel ZnS–ZnFe2O4 composites were successfully synthesized via a simple and green hydrothermal route. X-ray diffraction (XRD) patterns of the synthesized composite proved the presence of both ZnS and ZnFe2O4. The other characteristics of the composites were further characterized in detail using Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy (UV–vis DRS) and vibrating sample magnetometry (VSM). The performance of ZnS–ZnFe2O4 in the presence of persulfate (PS, K2S2O8) as a co-catalyst was tested for degrading rhodamine B (RhB) under UV light illumination. ZnS–ZnFe2O4 composites could remove about 97.67% of RhB in 90 min, which was much higher removal than either ZnS or ZnFe2O4 alone. Moreover, the recovery of catalyst and its recycling performance were found to be good after testing three times. A feasible mechanism analysis of RhB degradation was validated by simple classical quenching experiments. The enhanced performance was attributed to the high-efficiency separation rate of photo induced electron-hole pairs and highly active free radicals of O2[rad], OH[rad] and SO4[rad].

Original languageEnglish (US)
Article number124547
JournalChemosphere
Volume237
DOIs
StatePublished - Dec 1 2019

Fingerprint

rhodamine B
Degradation
degradation
Composite materials
Magnetometry
catalyst
Recycling
Ultraviolet Rays
Lighting
Transmission Electron Microscopy
X-Ray Diffraction
Electron Scanning Microscopy
Catalysts
Free Radicals
Spectrum Analysis
free radical
Free radicals
Ultraviolet radiation
Electrons
Diffraction patterns

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

@article{9c41e2bd176f4e7787ea0f3d46a44fc0,
title = "Efficient degradation of rhodamine B by magnetically separable ZnS–ZnFe2O4 composite with the synergistic effect from persulfate",
abstract = "Novel ZnS–ZnFe2O4 composites were successfully synthesized via a simple and green hydrothermal route. X-ray diffraction (XRD) patterns of the synthesized composite proved the presence of both ZnS and ZnFe2O4. The other characteristics of the composites were further characterized in detail using Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy (UV–vis DRS) and vibrating sample magnetometry (VSM). The performance of ZnS–ZnFe2O4 in the presence of persulfate (PS, K2S2O8) as a co-catalyst was tested for degrading rhodamine B (RhB) under UV light illumination. ZnS–ZnFe2O4 composites could remove about 97.67{\%} of RhB in 90 min, which was much higher removal than either ZnS or ZnFe2O4 alone. Moreover, the recovery of catalyst and its recycling performance were found to be good after testing three times. A feasible mechanism analysis of RhB degradation was validated by simple classical quenching experiments. The enhanced performance was attributed to the high-efficiency separation rate of photo induced electron-hole pairs and highly active free radicals of O2[rad]−, OH[rad] and SO4[rad]−.",
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Efficient degradation of rhodamine B by magnetically separable ZnS–ZnFe2O4 composite with the synergistic effect from persulfate. / Zhu, Boyuan; Cheng, Hao; Ma, Jianfeng; Kong, Yong; Komarneni, Sridhar.

In: Chemosphere, Vol. 237, 124547, 01.12.2019.

Research output: Contribution to journalArticle

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AU - Zhu, Boyuan

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AU - Komarneni, Sridhar

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