Enhancement of photocatalytic activity and stability of Ag2CO3 by formation of AgBr/Ag2CO3 heterojunction in mordenite zeolite

Asadollahi, Ali; Sohrabnezhad, Sh.; Ansari, R.

doi:10.1016/j.apt.2016.10.004

Cited by 26 publications

(10 citation statements)

References 34 publications

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“…The octahedral MIL‐101 is not observed in the SEM image of the MOR/MIL‐101SIB sample. Probably, the morphology of pre‐synthesized MIL‐101 MOF changes during the hydrothermal treatment in a basic aqueous solution, because mordenite and MIL‐101(Cr) are hydrothermally synthesized in basic and acidic aqueous solution, respectively . These kinds of SEM images were observed by Liu et a l …”

Section: Resultssupporting

confidence: 92%

“…Probably, the morphology of pre-synthesized MIL-101 MOF changes during the hydrothermal treatment in a basic aqueous solution, because mordenite and MIL-101(Cr) are hydrothermally synthesized in basic and acidic aqueous solution, respectively. [23,24] These kinds of SEM images were observed by Liu et al [27] The TEM image and EDX results of the composite are exhibited in Figure 3c and d, respectively. The TEM image of MOR/MIL-101SIB indicated aggregation of MIL-101 MOF that was located over the surface area of MOR zeolite.…”

Section: Characterization Of Compositementioning

confidence: 72%

“…The synthesis procedure for MOR zeolite was as reported in our previous paper . The chemical composition of the MOR gel was 6Na 2 O:5Al 2 O 3 :30SiO 2 :780H 2 O. Cr‐based MOF (MIL‐101) was synthesized by the hydrothermal method based on the published recipe with a slight modification .…”

Section: Methodsmentioning

confidence: 82%

“…The synthesis procedure for MOR zeolite was as reported in our previous paper. [23] The chemical composition of the MOR gel was 6Na 2 O:5Al 2 O 3 :30SiO 2 :780H 2 O. Crbased MOF (MIL-101) was synthesized by the hydrothermal method based on the published recipe with a slight modification. [24] A small-scale synthesis of MIL-101 (Cr) includes a solution containing Cr (NO 3 ) 3 ·9H 2 O (1.6 mg, 1.0 mmol), nitric acid 67% (0.65 mL, 1.0 mmol) and ditopic terephthalic acid (H 2 BDC; 0.65 mg, 1.0 mmol) in 20 mL H 2 O.…”

Section: Synthesis Of Mil-101(cr) and Mor Zeolitementioning

confidence: 99%

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Synthesis of chromene derivatives in the presence of mordenite zeolite/MIL‐101 (Cr) metal–organic framework composite as catalyst

Fallah

Sohrabnezhad

Abedini

2019

Applied Organom Chemis

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In the present study, the synthesis of mordenite zeolite/MIL‐101(Cr) metal–organic framework (MOF) composite [MOR/MIL‐101(Cr)] using the ship in a bottle method was suggested. The properties of prepared composite and individual MOF and MOR zeolite were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption–desorption measurement, and thermogravimetric analysis (TGA). The XRD results indicated diffraction peaks for each compound (MOR and MOF) in composite. The SEM and TEM images showed the formation of plates MOR (with size of 2.5 × 3 μm) along with spherical particles MIL‐101. The Brunauer–Emmett–Teller results showed that the surface area of the composite was smaller than individual MOF and MOR zeolite. Based on TGA plots, the hybrid zeolite/MOF composite was more thermally stable compared with the isolated MIL‐101(Cr). The composite was functionalized by post‐synthetic modification to obtain acid–base bifunctionality (H‐MOR/MIL‐101‐ED) for the synthesis of chromene derivatives. The acidity from framework Al‐O(H)‐Si sites in MOR and basicity from amine groups in MIL‐101 were obtained by post‐synthetic modification.

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Section: Resultssupporting

confidence: 92%

Section: Characterization Of Compositementioning

confidence: 72%

Section: Methodsmentioning

confidence: 82%

Section: Synthesis Of Mil-101(cr) and Mor Zeolitementioning

confidence: 99%

See 2 more Smart Citations

Synthesis of chromene derivatives in the presence of mordenite zeolite/MIL‐101 (Cr) metal–organic framework composite as catalyst

Fallah

Sohrabnezhad

Abedini

2019

Applied Organom Chemis

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“…In these equations, χ is the absolute electronegativity of the semiconductor (χ is 5.76 eV for ZnO) . E e is the energy of free electrons on the hydrogen scale (4.5 eV) and E g is the band gap of the semiconductor . The calculated amount of the conduction and the valence band edge potentials for ZnO (regardless of the amount of the added N) were −0.11 and 2.63 eV (vs NHE), respectively.…”

Section: Results and Discussion3 Conclusionmentioning

confidence: 99%

Improvement of Ultrasound‐Assisted Removal of Rifampin in the Presence of N: ZnO/GO Nanocomposite as Sonocatalyst

Bāzghale

Mohammad‐Khāh

2020

ChemistrySelect

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The sonocatalytic Removal of Rifampin by Nitrogen-doped Zinc oxide/Graphene oxide hybrid nanocomposite (N: ZnO/GO) is reported in this study. The structural properties of the nanocomposites were confirmed by the X-ray diffraction (XRD), the scanning electron microscopy (SEM), the transmission electron microscopy (TEM), the X-ray energy spectroscopy (EDX) and the diffraction reflectance spectroscopy (DRS). The experiments were investigated by applying the Response Surface Methodology (RSM) using the Design of Experiments software. Analysis of variance (ANOVA) confirmed that the quadratic model has good reliability for predicting the sonocatalytic efficiency with different operational factors (R 2 = 0.9958 and Adjusted R 2 = 0.9920). According to the RSM data, the optimized nanocomposite (N: ZnO (0.2 M)/GO (0.1 g)) demonstrated a reasonable catalytic activity for sonocatalytic degradation of RIF at the initial concentration (30 mg L À 1 ), the ultrasonic irradiation time (60 min), natural pH and under the ultrasonic irradiation power of 400 W with a reaction rate constant of 0.0466 min À 1 which was higher compared with the other ones. The residual RIF amount has determined by the spectrophotometric method. The percentage of the RIF minerals was 80.8 % after 60 min of RIF degradation over N: ZnO (0.2 M)/GO.[a] Ā.

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Synthesis of AgBr/TiO2/(I/S) composite and its enhanced photocatalytic performance to rhodamine B

Yang

Long

Xie

et al. 2021

J Mater Sci: Mater Electron

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Enhancement of photocatalytic activity and stability of Ag2CO3 by formation of AgBr/Ag2CO3 heterojunction in mordenite zeolite

Cited by 26 publications

References 34 publications

Synthesis of chromene derivatives in the presence of mordenite zeolite/MIL‐101 (Cr) metal–organic framework composite as catalyst

Synthesis of chromene derivatives in the presence of mordenite zeolite/MIL‐101 (Cr) metal–organic framework composite as catalyst

Improvement of Ultrasound‐Assisted Removal of Rifampin in the Presence of N: ZnO/GO Nanocomposite as Sonocatalyst

Synthesis of AgBr/TiO2/(I/S) composite and its enhanced photocatalytic performance to rhodamine B

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