A dual-functional UiO-66/TiO<sub>2</sub> composite for water treatment and CO<sub>2</sub> capture

Wang, Yang; Liu, Huijin; Zhang, Manling; Duan, Wubiao; Liu, Bo

doi:10.1039/c7ra00028f

Cited by 30 publications

(17 citation statements)

References 42 publications

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“…The vibrational band at 1585 cm −1 corresponds to the stretching C=C vibration of the benzene ring of TPA [33] . Additionally, The band observed around 1655 cm −1 is assigned to the asymmetric stretching of C=O of the DMF solvent [34] . The vibrational peaks at 815 cm −1 , 755 cm −1 , and 662 cm −1 are referred to O−H and C−H in the TPA ligand [35] .…”

Section: Resultsmentioning

confidence: 99%

Synthesis of NiFe₂O₄@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

El-Shamy

El-Fawal

2021

ChemistrySelect

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In this study, NiFe2O4@AC/UiO‐66(Zr) composites were successfully prepared with different ratios of UiO‐66(Zr) as support for NiFe2O4@AC, (1 : 1), (2 : 1) and (3 : 1) named NiFe2O4@AC/UiO‐66(Zr)‐1, NiFe2O4@AC/UiO‐66(Zr)‐2 and NiFe2O4@AC/UiO‐66(Zr)‐3, respectively. The prepared composites were characterized by X‐Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X‐Ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), ultraviolet‐visible diffuse reflectance (UV‐Vis/DRS) spectroscopy, PL (Photoluminescence) study. The synthesized composites′ efficiencies to enhance the photodegradation of alizarin yellow R (AYR) under visible‐light were evaluated. The results identified that NiFe2O4@AC/UiO‐66(Zr)‐2 is the most photoreactive photocatalyst with the lowest bandgap ∼1.7 eV. NiFe2O4@AC/UiO‐66(Zr)‐2 shows higher photodegradation efficiency (97.9 %) compared to NiFe2O4@AC/UiO‐66(Zr)‐1 and NiFe2O4@AC/UiO‐66(Zr)‐3 with photodegradation efficiency of 75.1 % and 89.9 %, respectively after 180 min under visible‐light. The photodegradation reaction of AYR was found to be pseudo first‐order reaction, and the rate constant (Ka) for NiFe2O4@AC/UiO‐66(Zr)‐1, NiFe2O4@AC/UiO‐66(Zr)‐2, and NiFe2O4@AC/UiO‐66(Zr)‐3 are 0.0072 min−1, 0.0204 min−1, and 0.0122 min−1, consecutively. The effects of various conditions such as initial concentration and photocatalyst dose on the photodegradation of AYR were determined. The high photodegradation efficiency of NiFe2O4@AC/UiO‐66(Zr)‐2 composite is because of the heterojunction and effective charge transfer between NiFe2O4@AC and UiO‐66(Zr). NiFe2O4@AC/UiO‐66(Zr)‐2 photocatalyst exhibits photocatalytic stability and reusability up to five cycles.

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Section: Resultsmentioning

confidence: 99%

Synthesis of NiFe₂O₄@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

El-Shamy

El-Fawal

2021

ChemistrySelect

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“… 25 Semiconductor photocatalysis is considered as an environmentally benign technology for the mineralization of organic contaminants in water. 3 , 26 , 27 Similar to supercapacitors, RGO is incorporated with TMOs to obtain a visible light active photocatalyst as well as for improving the efficiency under ultraviolet light. It is very important to emphasize that TiO 2 is a one of the most efficient TMOs that has found use in both supercapacitor and photocatalysis applications.…”

Section: Introductionmentioning

confidence: 99%

Grape Seed Extract Assisted Synthesis of Dual-Functional Anatase TiO₂ Decorated Reduced Graphene Oxide Composite for Supercapacitor Electrode Material and Visible Light Photocatalytic Degradation of Bromophenol Blue Dye

et al. 2021

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The grape extract is a potential natural reducing agent because of its high phenolic content. The extracts of seeds, skin, and pulp of grape were prepared by digestion, grinding, and soxhlet methods and used for reducing graphene oxide (GO). The reduced GO made using the soxhlet extract of grape seed (GRGO) was hydrothermally treated with titanium dioxide (TiO 2 ) for the synthesis of GRGO–TiO 2 nanocomposite. The X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR), UV–vis, photoluminescence, and Raman spectra studies further confirmed the formation of GRGO and the GRGO–TiO 2 hybrid. Scanning electron microscope and transmission electron microscope studies showed the decoration of spherical TiO 2 particles (<100 nm) on the few-layered GRGO sheets. The GRGO–TiO 2 hybrid was explored as a working electrode for supercapacitors and visible light photocatalyst for water decontamination. GRGO–TiO 2 showed higher specific capacitance (175 F g –1 ) than GRGO (150 F g –1 ) and TiO 2 (125 F g –1 ) in an aqueous electrolyte. GRGO–TiO 2 exhibited 83.6% capacitance retention even after 2000 cycles, indicating the good stability of the material. Further, under visible light irradiation (λ > 400 nm), GRGO–TiO 2 showed ∼30% higher photo-oxidation of the bromophenol blue (BPB) dye than TiO 2 . Also, GRGO–TiO 2 decreased the total organic carbon content of BPB from 92 to 18 ppm. Overall, the soxhlet extract of grape seed was found to be a cost-effective reducing agent for the preparation of GRGO, which is a suitable material to be used in supercapacitors and photocatalysis.

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“…Additionally, the composites′ adsorption capacity was maintained throughout six adsorptions‐desorption cycles. Yang Wang et al [116] . synthesized UiO‐66/TiO 2 by in‐situ adding TiO 2 nanoparticles into the MOF precursors using a solvothermal method.…”

Section: Co2 Capture By Uio‐66mentioning

confidence: 99%

Trends and Prospects in UiO‐66 Metal‐Organic Framework for CO₂ Capture, Separation, and Conversion

Usman

Helal

Abdelnaby

et al. 2021

The Chemical Record

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Among thousands of known metal‐organic frameworks (MOFs), the University of Oslo's MOF (UiO‐66) exhibits unique structure topology, chemical and thermal stability, and intriguing tunable properties, that have gained incredible research interest. This paper summarizes the structural advancement of UiO‐66 and its role in CO2 capture, separation, and transformation into chemicals. The first part of the review summarizes the fast‐growing literature related to the CO2 capture reported by UiO‐66 during the past ten years. The second part provides an overview of various advancements in UiO‐66 membranes in CO2 purification. The third part describes the role of UiO‐66 and its composites as catalysts for CO2 conversion into useful products. Despite many achievements, significant challenges associated with UiO‐66 are addressed, and future perspectives are comprehensively presented to forecast how UiO‐66 might be used further for CO2 management.

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A dual-functional UiO-66/TiO₂ composite for water treatment and CO₂ capture

Cited by 30 publications

References 42 publications

Synthesis of NiFe₂O₄@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

Synthesis of NiFe₂O₄@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

Grape Seed Extract Assisted Synthesis of Dual-Functional Anatase TiO₂ Decorated Reduced Graphene Oxide Composite for Supercapacitor Electrode Material and Visible Light Photocatalytic Degradation of Bromophenol Blue Dye

Trends and Prospects in UiO‐66 Metal‐Organic Framework for CO₂ Capture, Separation, and Conversion

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A dual-functional UiO-66/TiO2 composite for water treatment and CO2 capture

Cited by 30 publications

References 42 publications

Synthesis of NiFe2O4@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

Synthesis of NiFe2O4@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

Grape Seed Extract Assisted Synthesis of Dual-Functional Anatase TiO2 Decorated Reduced Graphene Oxide Composite for Supercapacitor Electrode Material and Visible Light Photocatalytic Degradation of Bromophenol Blue Dye

Trends and Prospects in UiO‐66 Metal‐Organic Framework for CO2 Capture, Separation, and Conversion

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Product

Resources

About

A dual-functional UiO-66/TiO₂ composite for water treatment and CO₂ capture

Synthesis of NiFe₂O₄@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

Synthesis of NiFe₂O₄@AC/UiO‐66(Zr) for Enhancement of the Photocatalytic Performance of Alizarin Yellow R Under Visible‐light

Grape Seed Extract Assisted Synthesis of Dual-Functional Anatase TiO₂ Decorated Reduced Graphene Oxide Composite for Supercapacitor Electrode Material and Visible Light Photocatalytic Degradation of Bromophenol Blue Dye

Trends and Prospects in UiO‐66 Metal‐Organic Framework for CO₂ Capture, Separation, and Conversion