Heterogeneous activation of peroxymonosulfate using Mn-Fe layered double hydroxide: Performance and mechanism for organic pollutant degradation

Hou, Lihua; Li, Xiaoming; Yang, Qi; Chen, Fei; Wang, Shana; Ma, Yinghao; Wu, You; Zhu, Xiaofei; Huang, Xiaoding; Wang, Dongbo

doi:10.1016/j.scitotenv.2019.01.190

Cited by 176 publications

(38 citation statements)

References 60 publications

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“…According to Ma D., 40 the degradation of TCH increases when the PMS dosages are increased. This may be interpreted as generating more SO 4 − ˙ in the activated system 41 and increasing the frequency of contact between tetracycline hydrochloride molecules and SO 4 − ˙. 42 This phenomenon was also observed in previous research.…”

Section: Resultssupporting

confidence: 80%

Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Wang

Shi

et al. 2021

RSC Adv.

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Section: Resultssupporting

confidence: 80%

Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Wang

Shi

et al. 2021

RSC Adv.

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Section: Selective Nitrate Removal From Aqueous Solutions By a Hydrotmentioning

confidence: 99%

“…The layered double hydroxides (LDHs) had been widely used as environmental remediation materials for anions because of their outstanding ion exchange capacities 20 , 21 and catalytic potentials 22 , 23 . LDHs could be expressed as: , where A n- represents an anion in the interlayer; M II and M III represent the bivalent and trivalent metals, respectively; and x represents the molar ratio of whose value is usually between 0.25 and 0.33 24 .…”

Section: Introductionmentioning

confidence: 99%

Selective nitrate removal from aqueous solutions by a hydrotalcite-like absorbent FeMgMn-LDH

Zhou

Tan

Gao

et al. 2020

Sci Rep

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FeMgMn-LDH, a type of potential environmental remediation material, has been synthesized via a co-precipitation method, and its adsorption characteristics for nitrate were investigated in this study. It’s shown that the prepared FeMgMn-LDH is a promising adsorbent for anions removal, which has high buffer capacity (final pH remained between 9 and 10) and high reversibility, and can remove nitrate ions selectively though an anion-sieve effect. The maximum amount of nitrate adsorption is 10.56 N-mg g−1 at 25 ℃. The removal rate of nitrate ions can reach 86.26% with the adsorbent dose of 5 g/L in a real water. The competition order of coexisting anions on nitrate adsorption by FeMgMn-LDH is CO32− > PO43− > SO42−. The negative values of ΔG0 (from − 27.796 to − 26.426 kJ mol−1) and ΔH0 (− 6.678 kJ mol−1) indicate that the nitrate adsorption process on the FeMgMn-LDH is spontaneous and exothermic. The main adsorption mechanisms of nitrate removal from aqueous solutions by FeMgMn-LDH are electrostatic attraction and ion exchange.

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“…To further observe the reactive radical species, the ESR signal of spin adduct by using DMPO as the spin trapping reagent is shown in Figure 8d. In an aqueous solution, the weak four-line signals of hyperfine splitting pattern giving the intensity peak ratio equal to 1:2:2:1 can be assigned to the DMPO-• OH adduct (aN = 15.0 G and aH = 14.7 G; g = 2.0059), which confirms the formation of • OH radicals [52,53]. For methanol dispersion, the eight-line signal was identified by the fitting, which revealed 93% simulation correlation with the three main compositions, 56.7% DMPO-• OCH3 (aN = 13.63 G, aH β = 7.90 G, aH γ = 1.67 G; g = 2.0057), 37.9% DMPO-• CR (aN = 14.8, aH β = 22.0 G; g = 2.0057), and 5.4% DMPO-• O2 − (aN = 13.76, aH β = 9.63, aH γ = 1.36 G; g = 2.0057) [52].…”

Section: Verification Of Charge Transfer Separation and Production Of Electron And Holementioning

confidence: 62%

Fabrication of Hydrotalcite-like Copper Hydroxyl Salts as a Photocatalyst and Adsorbent for Hexavalent Chromium Removal

et al. 2022

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Cu-HyS-urea and Cu-HyS-NaOH, which are hydrotalcite-like copper hydroxyl salts, were prepared by two different methods, urea hydrolysis and precipitation, respectively. Both synthesis methods provided the successful formation of a copper hydroxyl salt, Cu2(OH)3NO3. From XRD and UV-DRS results, the product from the urea hydrolysis methods (Cu-HyS-urea) displayed higher crystallinity, small bandgap energy (Eg), and high light absorption ability because of some intercalated carbonate anions. For the Cr(VI) removal test, the Cu-HyS-NaOH showed superior adsorption of Cr(VI) than Cu-HyS-urea due to a higher specific surface area, confirmed by BET analysis. However, the Cu-HyS-urea presented higher photocatalytic Cr(VI) reduction under light irradiation than Cu-HyS-NaOH, owing to narrow Eg, less recombination, and a high transfer of the photogenerated charge carriers, proven by the results from photoluminescence, photocurrent density, and electrochemical impedance spectroscopy. Thus, this work provides a new function of the hydrotalcite-like copper hydroxyl salts (Cu-HyS-urea and Cu-HyS-NaOH) that can be utilized not only for adsorption of Cr(VI) but also as photocatalysts for Cr(VI) reduction under light irradiation.

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Heterogeneous activation of peroxymonosulfate using Mn-Fe layered double hydroxide: Performance and mechanism for organic pollutant degradation

Cited by 176 publications

References 60 publications

Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Selective nitrate removal from aqueous solutions by a hydrotalcite-like absorbent FeMgMn-LDH

Fabrication of Hydrotalcite-like Copper Hydroxyl Salts as a Photocatalyst and Adsorbent for Hexavalent Chromium Removal

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Heterogeneous activation of peroxymonosulfate using Mn-Fe layered double hydroxide: Performance and mechanism for organic pollutant degradation

Cited by 176 publications

References 60 publications

Peroxymonosulfate activation by tea residue biochar loaded with Fe3O4 for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Peroxymonosulfate activation by tea residue biochar loaded with Fe3O4 for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Selective nitrate removal from aqueous solutions by a hydrotalcite-like absorbent FeMgMn-LDH

Fabrication of Hydrotalcite-like Copper Hydroxyl Salts as a Photocatalyst and Adsorbent for Hexavalent Chromium Removal

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Product

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Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism