Structural variations and generation of binding sites in Fe-loaded ZSM-5 and silica under the effect of UV-irradiation and their role in enhanced BTEX abatement from gas streams

Kim, Suho; Gupta, Nishesh Kumar; Bae, Jiyeol; Kim, Kwang S.

doi:10.1016/j.jhazmat.2019.121274

Cited by 17 publications

(2 citation statements)

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“…On a similar note, peak splitting has been observed in the ZSM-5 zeolite after minor incorporation of iron in the lattice. 39 Considering the extent of splitting, one could predict that there were large symmetry transformations in CoBDC under UV-irradiation. The PXRD pattern of NiBDC matched well with the reported PXRD pattern of NiBDC 37 ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Terephthalate and trimesate metal–organic frameworks of Mn, Co, and Ni: exploring photostability by spectroscopy

et al. 2021

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Section: Resultsmentioning

confidence: 99%

Terephthalate and trimesate metal–organic frameworks of Mn, Co, and Ni: exploring photostability by spectroscopy

et al. 2021

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“…The removal efficiency was 61% at the seventh cycle and 71% at the tenth cycle. This is considered to be because the pore structure of the Fe-SiO 2 material is changed to a more suitable structure for removing contaminants having a relatively larger molecular weight, as the average pore size is changed in width by long-term UV irradiation [ 30 ]. Nevertheless, the UV irradiation used in this study effectively mineralized the adsorbed contaminants, so it can be explained that the removal efficiency is continuously maintained.…”

Section: Resultsmentioning

confidence: 99%

Sustainable Removal of BTEX Gas Using Regenerated Metal Containing SiO2

et al. 2022

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In the last decades, the removal of benzene, toluene, ethylbenzene, and xylene (BTEX) has been considered a major environmental crisis. In this study, two novel nanocomposite materials (Fe2O3/SiO2 and Fe2O3-Mn2O3/SiO2) that have regeneration ability by UV irradiation have been fabricated to remove BTEX at ambient temperature. This research revealed that both nanocomposites could remove more than 85% of the BTEX in the first cycle. The adsorption capacities followed the order of ethylbenzene > m-xylene > toluene > benzene as in the molecular weight order. The reusability test using UV irradiation showed that the performance of Fe2O3/SiO2 decreased drastically after the fifth cycle for benzene. On the other hand, when Mn is located in the nanocomposite structure, Fe2O3-Mn2O3/SiO2 could maintain its adsorption performance with more than 80% removal efficiency for all the BTEX for ten consecutive cycles. The difference in the reusability of the two nanocomposites is that the electron energy (from the valence band to the conduction band) for BTEX decomposition is changed due to the presence of manganese. This study provides a promising approach for designing an economical reusable nanomaterial, which can be used for VOC-contaminated indoor air.

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Management of Environmental Waste and Pollutants: Current Trend and Research Directions

Gupta

Achary

2020

Handbook of Environmental Materials Management

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Structural variations and generation of binding sites in Fe-loaded ZSM-5 and silica under the effect of UV-irradiation and their role in enhanced BTEX abatement from gas streams

Cited by 17 publications

References 39 publications

Terephthalate and trimesate metal–organic frameworks of Mn, Co, and Ni: exploring photostability by spectroscopy

Terephthalate and trimesate metal–organic frameworks of Mn, Co, and Ni: exploring photostability by spectroscopy

Sustainable Removal of BTEX Gas Using Regenerated Metal Containing SiO2

Management of Environmental Waste and Pollutants: Current Trend and Research Directions

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