Controlling ZIF-67 crystals formation through various cobalt sources in aqueous solution

Guo, Xiao; Xing, Tiantian; Lou, Yongbing; Chen, Jinxi

doi:10.1016/j.jssc.2015.12.021

Cited by 198 publications

(97 citation statements)

References 41 publications

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“…These XRD patterns indicated that g‐C 3 N 4 was successfully synthesized. From Figure b, the prominent reflections at 2θ = 7.5°, 10.6°, 12.9°, 15.0°, 16.6°, 18.27°, 22.3°, 24.8°, 25.7°, 26.9°, 29.9°, 30.6°, 31.4°, and 32.7° were corresponding to (011), (002), (112), (022), (013), (222), (114), (233), (224), (134), (044), (334), (244), and (235) planes of pristine ZIF‐67 . The XRD of g‐C 3 N 4 /ZIF‐67 nanocomposite no impurity peaks were observed, indicating that the synthesized g‐C 3 N 4 /ZIF‐67 was high purity (Figure c).…”

Section: Resultsmentioning

confidence: 98%

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Devarayapalli

Vattikuti

Sreekanth

et al. 2020

Applied Organom Chemis

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Herein, cobalt (Co)‐based metal–organic zeolitic imidazole frameworks (ZIF‐67) coupled with g‐C3N4 nanosheets synthesized via a simple microwave irradiation method. SEM, TEM and HR‐TEM results showed that ZIF‐67 were uniformly dispersed on g‐C3N4 surfaces and had a rhombic dodecahedron shape. The photocatalytic properties of g‐C3N4/ZIF‐67 nanocomposite were evaluated by photocatalytic dye degradation of crystal violet (CV), 4‐chlorophenol (4‐CP) and photocatalytic hydrogen (H2) production. In presence of visible light illumination, the photocatalytic dye results showed that 95% CV degradation and 53% 4‐CP degradation within 80 min. The H2 production of the g‐C3N4/ZIF‐67 composite was 2084 μmol g−1, which is 3.84 folds greater than that of bare g‐C3N4 (541 μmol g−1).

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Section: Resultsmentioning

confidence: 98%

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Devarayapalli

Vattikuti

Sreekanth

et al. 2020

Applied Organom Chemis

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“…On the contrary, the use of non‐reactive salts, including ZnCl 2 , Zn(OAc) 2 (OAc = acetate) or ZnI 2 yielded ZIF‐8 crystals with larger sizes between 350–650 nm. Similarly, the use of Co(OAc) 2 during the hydrothermal synthesis of ZIF‐67 NCs at 120 °C also gave the highest average particle size (570 nm) compared to CoSO 4 (480 nm), CoCl 2 (220 nm) and Co(NO 3 ) 2 (340 nm) …”

Section: Size and Morphological Control Of Zifsmentioning

confidence: 96%

Strategies for Improving the Functionality of Zeolitic Imidazolate Frameworks: Tailoring Nanoarchitectures for Functional Applications

et al. 2017

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Zeolitic imidazolate frameworks (ZIFs), a subclass of metal-organic frameworks (MOFs) built with tetrahedral metal ions and imidazolates, offer permanent porosity and high thermal and chemical stabilities. While ZIFs possess some attractive physical and chemical properties, it remains important to enhance their functionality for practical application. Here, an overview of the extensive strategies which have been developed to improve the functionality of ZIFs is provided, including linker modifications, functional hybridization of ZIFs via the encapsulation of guest species (such as metal and metal oxide nanoparticles and biomolecules) into ZIFs, and hybridization with polymeric matrices to form mixed matrix membranes for industrial gas and liquid separations. Furthermore, the developed strategies for achieving size and shape control of ZIF nanocrystals are considered, which are important for optimizing the textural characteristics as well as the functional performance of ZIFs and their derived materials/hybrids. Moreover, the recent trends of using ZIFs as templates for the derivation of nanoporous hybrid materials, including carbon/metal, carbon/oxide, carbon/sulfide, and carbon/phosphide hybrids, are discussed. Finally, some perspectives on the potential future research directions and applications for ZIFs and ZIF-derived materials are offered.

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“…[14,15] Zeolitic imidazolate frameworks (ZIFs), as as ubclass of MOFs, are formed in zeolite topologies with metal ions and imidazolate ligands. [16] Due to their large specific surfacea rea, tunable porosity,a nd tailorable functionality,Z IFs emerged as versatile materials for catalysis,s eparation, energy storage, and so on. [17][18][19] Among various ZIFs, ZIF-8 have been further investigated ase lectrode materials fors upercapacitors, water electrolysis,p hotocatalysts, etc.…”

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confidence: 99%

Zinc Imidazolate Metal–Organic Frameworks (ZIF‐8) for Electrochemical Reduction of CO₂ to CO

et al. 2017

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Metal-organic frameworks (MOFs) are regardeda sp romising materials for CO 2 adsorption,which is an importantstep in CO 2 electrochemical reduction.I nt his work, zeolitic imidazolate framework (ZIF-8) nanomaterials were synthesized with various zinc sourcesa nd used as electrocatalystsf or CO 2 reduction to CO. Among them, ZIF-8,p repared using ZnSO 4 ,d elivers the best catalytic activity towards CO 2 electroreduction,w ith 65 % CO yield. The main catalytic centerc an be attributed to the discrete Zn nodes in ZIF-8. Electrolytes are important in increasingt he CO selectivity,a nd NaCl is the best suitablee lectrolyte duetof acile anion exchange.The increasing consumption of fossil resources is broadly regarded as ac ausef or the rising levels of CO 2 in the atmosphere, which leads to energy and environmental problems. [1][2][3] Electrochemical reduction of CO 2 ,u sing electricity from renewable resources, is ap otentially "clean"s trategy to obtain fuels and chemicals under mild conditions. [4][5][6][7][8] However, efficient and robust catalysts operatinga ts mall over-potentials with high selectivity and efficiency are still required for technology commercialization.To address these problems, av ariety of electrocatalysts based on metal and metallicc omplexesh as been developed. Amongt hem, noble metals,s uch as Au, [9,10] Ag, [11] and Pd, [12,13] have shown highF aradaic efficiencies for CO production;h owever,t he scarcity andh igh cost hinder their broad use in CO 2 electro-reduction. It is necessary to develop earth-abundant materials as potent catalysts for CO 2 electro-reduction. Metalorganic frameworks (MOFs)a re promising materials for diverse catalytic conversions. [14,15] Zeolitic imidazolate frameworks (ZIFs), as as ubclass of MOFs, are formed in zeolite topologies with metal ions and imidazolate ligands. [16] Due to their large specific surfacea rea, tunable porosity,a nd tailorable functionality,Z IFs emerged as versatile materials for catalysis,s eparation, energy storage, and so on. [17][18][19] Among various ZIFs, ZIF-8 have been further investigated ase lectrode materials fors upercapacitors, water electrolysis,p hotocatalysts, etc. [20][21][22][23] ZIF-8 served as porous electrode material for supercapacitora sr eported by Yamauchi et al, and delivered high electrochemical capacitance and good stability. [24] It can be calcined to form C, N-doped ZnO for use in dye degradationa nd water oxidation. [25] Besides, ZIF-8 possessesh igh CO 2 adsorption properties, which is an important step for CO 2 electrochemical reduction. [26] Recently,u sing MOFs for CO 2 reduction has just emerged and showed considerable catalytic performances. [28][29][30] Yet, ZIF-8 as ac atalysis material for CO 2 electrochemical reduction has not been reported.In this work, several ZIF-8 nanomaterials have been synthesized to investigate the aqueous electrocatalytic reduction of CO 2 ,e xploitingu nique properties such as larges urface area, uniform pore size, well-defined morphology,a nd strong coordination between me...

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Controlling ZIF-67 crystals formation through various cobalt sources in aqueous solution

Cited by 198 publications

References 41 publications

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Strategies for Improving the Functionality of Zeolitic Imidazolate Frameworks: Tailoring Nanoarchitectures for Functional Applications

Zinc Imidazolate Metal–Organic Frameworks (ZIF‐8) for Electrochemical Reduction of CO₂ to CO

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Controlling ZIF-67 crystals formation through various cobalt sources in aqueous solution

Cited by 198 publications

References 41 publications

Hydrogen production and photocatalytic activity of g‐C3N4/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Hydrogen production and photocatalytic activity of g‐C3N4/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Strategies for Improving the Functionality of Zeolitic Imidazolate Frameworks: Tailoring Nanoarchitectures for Functional Applications

Zinc Imidazolate Metal–Organic Frameworks (ZIF‐8) for Electrochemical Reduction of CO2 to CO

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Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Hydrogen production and photocatalytic activity of g‐C₃N₄/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation

Zinc Imidazolate Metal–Organic Frameworks (ZIF‐8) for Electrochemical Reduction of CO₂ to CO