Fe3O4 embedded ZIF-8 nanocrystals with ultra-high adsorption capacity towards hydroquinone

Jiang, Xin; Chen, Haiyu; Liu, Lingli; Qiu, Ling-Guang; Xia, Junqiang

doi:10.1016/j.jallcom.2015.06.021

Cited by 48 publications

(17 citation statements)

References 45 publications

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“…Considering the fact that the HQ degrades during the catalytic oxidation process whereas it only gets separated from the solution and gets adsorbs on the Fe-GAC during the adsorption process which will require further disposal of the spent Fe-GAC, overall catalytic oxidation seems to be a better technique for treatment of HQ bearing wastewater. Comparison of work reported on HQ adsorption or mineralization by various adsorbents/catalysts is given in Table S3 [47,[69][70][71][72][73][74][75]. Again, mineralization of HQ by Fe-GAC is the better method of HQ removal from aqueous solution.…”

Section: Comparison Of Adsorption and Catalytic Oxidation Processmentioning

confidence: 99%

Removal of toxic hydroquinone: Comparative studies on use of iron impregnated granular activated carbon as an adsorbent and catalyst

Tyagi

Das

Srivastava

2018

Environmental Engineering Research

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In this study, iron (Fe) impregnated granular activated carbon (Fe-GAC) has been synthesized and characterized for various properties. Comparative studies have been performed for use of Fe-GAC as an adsorbent as well as a catalyst during catalytic oxidation of hydroquinone (HQ). In the batch adsorption study, effect of process parameter like initial HQ concentration (Co = 25-1,000 mg/L), pH (2-10), contact time (t: 0-24 h), temperature (T: 15-45°C) and adsorbent dose (w: 5-50 g/L) have been studied. Maximum HQ adsorption efficiency of 75% was obtained at optimum parametric condition of: pH = 4, w = 40 g/L and t = 14 h. Pseudo-second order model best-fitted the HQ adsorption kinetics whereas Langmuir model best-represented the isothermal equilibrium behavior. During oxidation studies, effect of various process parameters like initial HQ concentration (Co: 20-100 mg/L), pH (4-8), oxidant dose (CH2O2: 0.4-1.6 mL/L) and catalyst dose (m: 0.5-1.5 g/L) have been optimized using Taguchi experimental design matrix. Maximum HQ removal efficiency of 83.56% was obtained at optimum condition of Co = 100 mg/L, pH = 6, CH2O2 = 0.4 mL/L, and m = 1 g/L. Overall use of Fe-GAC during catalytic oxidation seems to be a better as compared to its use an adsorbent for treatment of HQ bearing wastewater.

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Section: Comparison Of Adsorption and Catalytic Oxidation Processmentioning

confidence: 99%

Removal of toxic hydroquinone: Comparative studies on use of iron impregnated granular activated carbon as an adsorbent and catalyst

Tyagi

Das

Srivastava

2018

Environmental Engineering Research

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“…The other is the hydrogen bonds between the -OH of RBS and the imidazole N of ZIF-8. 10,36 In the pH range of 2-12, the absorption intensity of RBS/ZIF-8 at 238 nm is decreased by the same amount of Cu 2+ (1.0 mM) (Fig. S4 †).…”

Section: The Cu 2+ Sensing Of Rbs and Rbs/zif-8mentioning

confidence: 96%

“…With a high specic surface area, good stability, and structural tunability, the porous zeolitic imidazolate framework-8 (ZIF-8) has been found practical applications in many elds, 3,4 such as hydrogen storage, 5 catalyzes, [6][7][8] separation, [9][10][11] adsorptions, 12 and chemosensor. 13,14 To achieve high sensitivity and selectivity, ZIF-8 was also used as the host of optical sensing materials for trace detection.…”

Section: Introductionmentioning

confidence: 99%

Enhanced chemical sensing for Cu²⁺ based on composites of ZIF-8 with small molecules

Zhang

Xiuyang

et al. 2020

RSC Adv.

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“…If 1/n 50, the adsorption is irreversible; 0 < 1/n < 1 means that the adsorption is favorable and 1 < 1/n means that the adsorption is unfavorable. 41 Other parameters are the same as the Langmuir model. For the adsorption of RhB, the fitting data for the Langmuir model ( Figure 10a and Table 3) and Freundlich model ( Figure S2a and Table S1) indicated that the RhB adsorption on ZnOdeposited PTFE membranes evidently followed Langmuir model.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Dye adsorption on zinc oxide nanoparticulates atomic‐layer‐deposited on polytetrafluoroethylene membranes

et al. 2016

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In this work, zinc oxide (ZnO) is deposited onto porous polytetrafluoroethylene (PTFE) membranes via atomic layer deposition (ALD) and thus produced ZnO-deposited PTFE membranes are used as adsorbents for the removal of dyes from aqueous solutions. We first examine the evolution of morphology, wettability, and crystallization of PTFE membranes with ZnO ALD. The presence of ZnO nanoparticulates significantly promotes the diffusion and contact of the aqueous solutions within the membrane on one hand, and endows the membrane a strong capability to adsorb dyes from the solutions on the other. Kinetic studies reveal that the adsorption of rhodamine B and acid orange 7 by the ZnO-deposited PTFE membranes can be described by the pseudo-second-order and pseudo-first-order model, respectively, and the adsorption of both dyes follows the Langmuir isotherm. The used membranes can be easily regenerated by rinsing with ethanol and reused for multiple times without loss of removal efficiency. V C 2016 American Institute of Chemical Engineers AIChE J, 00: 000-000, 2016

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Fe3O4 embedded ZIF-8 nanocrystals with ultra-high adsorption capacity towards hydroquinone

Cited by 48 publications

References 45 publications

Removal of toxic hydroquinone: Comparative studies on use of iron impregnated granular activated carbon as an adsorbent and catalyst

Removal of toxic hydroquinone: Comparative studies on use of iron impregnated granular activated carbon as an adsorbent and catalyst

Enhanced chemical sensing for Cu²⁺ based on composites of ZIF-8 with small molecules

Dye adsorption on zinc oxide nanoparticulates atomic‐layer‐deposited on polytetrafluoroethylene membranes

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Fe3O4 embedded ZIF-8 nanocrystals with ultra-high adsorption capacity towards hydroquinone

Cited by 48 publications

References 45 publications

Removal of toxic hydroquinone: Comparative studies on use of iron impregnated granular activated carbon as an adsorbent and catalyst

Removal of toxic hydroquinone: Comparative studies on use of iron impregnated granular activated carbon as an adsorbent and catalyst

Enhanced chemical sensing for Cu2+ based on composites of ZIF-8 with small molecules

Dye adsorption on zinc oxide nanoparticulates atomic‐layer‐deposited on polytetrafluoroethylene membranes

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Enhanced chemical sensing for Cu²⁺ based on composites of ZIF-8 with small molecules