Rhodamine B degradation by nanosized zeolitic imidazolate framework-8 (ZIF-8)

Chin, M. A.; Cisneros, Cecilia; Araiza, Stephanie M.; Vargas, Kevin M.; Ishihara, Kristi M.; Tian, Fangyuan

doi:10.1039/c8ra03459a

Cited by 97 publications

(66 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the difference in energy band positions, ZIF-8 and BVO form a heterojunction at the contact interface, which can promote the transformation of photogenerated charges under the effect of the built-in electric field. The photogenerated holes in the valence band (+2.4 V vs. NHE) of BVO [30] migrate to the conduction band of ZIF-8 (+1.9 V vs. NHE) [31], thus effectively inhibiting the recombination of photogenerated electrons and holes. Furthermore, the stability of photocatalyst is very important for practical application.…”

Section: Photocatalytic Performancementioning

confidence: 99%

Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance

Xiao

et al. 2018

Crystals

View full text Add to dashboard Cite

In this work, a novel metal-organic framework (MOF) and BiVO4 (BVO) composite photocatalyst was successfully synthesized by an in-situ growth method. The characterization of obtained samples was done by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, N2 adsorption, and photoluminescence spectroscopy. The photocatalytic performance of ZIF-8@BiVO4 composite was evaluated by the degradation of methylene blue (MB) under simulated visible light irradiation. Compared with the mixture of BVO and ZIF-8, the composite photocatalyst exhibited superior photodegradation efficiency, which could be attributed to the synergistic effect between BVO and ZIF-8. The reduced recombination of photogenerated electrons and holes was considered to be an important reason for the enhancement of photocatalytic performance. This design demonstrates a rational method to improve the photocatalytic performance by combining photocatalysts with MOFs.

show abstract

Section: Photocatalytic Performancementioning

confidence: 99%

Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance

Xiao

et al. 2018

Crystals

View full text Add to dashboard Cite

show abstract

“…In view of the structures of RhB and MB (Table S2), the carboxylic groups in RhB have strong affinity for binding the defective Zn(II) sites in ZIF‐8@CMs, which can be further indicated by XPS (Figure S3, Table S3). For the high‐resolution spectra of Zn 2p, the ratio of Zn−O increases with the decreases of Zn‐mlm in RhB loaded membrane was observed compared with that of CM‐47, which are owed to the attaching of RhB to the Zn(II) sites . The stronger interaction between the composite membrane and RhB is responsible for the higher rejection rate …”

Section: Resultsmentioning

confidence: 93%

Cellulose Membrane Composited with ZIF‐8 for Selective Separation of Rhodamine B

et al. 2020

View full text Add to dashboard Cite

A composite membrane was prepared by in-situ synthesis of ZIF-8 on cellulose matrix in alkali/urea system. SEM revealed that ZIF-8 particles are uniformly dispersed and tightly wrapped around the regenerated cellulose membrane which features a three-dimensional porous structure. XRD, XPS and IR demonstrated the successful synthesis of ZIF-8 on cellulose. Dye filtration experiments revealed high rejection rate (96 %) and selectivity for rhodamine B. Moreover, the composite membrane exhibited good cycling behavior with the rejection rate staying over 84 % after five cycles. The finding in this work provides a strategy for the rational design and fabrication of composite materials of cellulose and MOFs with promising application for wastewater purification.[a] L.

show abstract

“…Figure S4 contains the high-resolution spectra, N1s, C1s, and O1s, while Figure S5 contains the Zn2p high-resolution XPS spectra of the ZIF-8 control and MAPLE deposited ZIF-8 film obtained at 0.45 J∙cm −2 . Specifically, while the ZIF-8 control showed the characteristic Zn2p3 peak at 1022.92 eV [ 58 ], the main peak of O1s at 533.52 eV was assigned to the carbonates [ 59 ]; for the N1s peak of the ZIF-8 control and MAPLE deposited samples, the spectrum was fitted with two peaks corresponding to C–N and C=N in imidazole [ 59 , 60 ] at about 398.2 and 399.3 eV, while the C1s peak at 285.23 eV corresponded to the 2-methylimidazole of the ZIF-8 [ 58 , 59 ]. The peaks for the deposited ZIF-8 MAPLE thin film were slightly shifted towards lower energies, i.e., 1021.03, 531.19, 398.42, and 284.34 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

Thin Films of Metal-Organic Framework Interfaces Obtained by Laser Evaporation

et al. 2021

View full text Add to dashboard Cite

Properties such as large surface area, high pore volume, high chemical and thermal stability, and structural flexibility render zeolitic imidazolate frameworks (ZIFs) well-suited materials for gas separation, chemical sensors, and optical and electrical devices. For such applications, film processing is a prerequisite. Herein, matrix-assisted pulsed laser evaporation (MAPLE) was successfully used as a single-step deposition process to fabricate ZIF-8 films. By correlating laser fluency and controlling the specific transfer of lab-synthesized ZIF-8, films with user-controlled physical and chemical properties were obtained. Films’ characteristics were evaluated by scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The analysis showed that frameworks of ZIF-8 can be deposited successfully and controllably to yield polycrystalline films. The deposited films maintained the integrity of the individual ZIF-8 framework, while undergoing minor crystalline and surface chemistry changes. No significant changes in particle size were observed. Our study demonstrated control over both the MAPLE deposition conditions and the outcome, as well as the suitability of the listed deposition method to create composite architectures that could potentially be used in applications ranging from selective membranes to gas sensors.

show abstract

Rhodamine B degradation by nanosized zeolitic imidazolate framework-8 (ZIF-8)

Abstract: ZIF-8 nanocrystals have exhibited different mechanisms for rhodamine B degradation in water under various circumstances.

Cited by 97 publications

References 70 publications

Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance

Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance

Cellulose Membrane Composited with ZIF‐8 for Selective Separation of Rhodamine B

Thin Films of Metal-Organic Framework Interfaces Obtained by Laser Evaporation

Contact Info

Product

Resources

About