Preparation of nano‐ZIF‐8 in methanol with high yield

Ta, Don Ngoc; Nguyen, Hong Khanh Dieu; Trinh, Bai X.; Le, Quynh Thuy; Ta, Hung N.; Nguyễn, Hương Thị Lan

doi:10.1002/cjce.23155

Cited by 66 publications

(39 citation statements)

References 115 publications

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“…2A shows the surface morphology analysis of the as purchased Z1200 MOF by SEM which shows uniform size distribution around ~0.5 µm porous morphology. The rhombic dodecahedron structure of Basolite Z1200 MOF is well reported in the literature and the SEM analysis confirms the same [27]- [29]. Fig.…”

Section: A Sem and Ftir Analysissupporting

confidence: 84%

“…2B shows FTIR spectroscopic analysis done at each modification steps. For the Z1200/EµPAD, the peak at 1583 cm -1 was due to the C=N stretching vibration of imidazole, and the bands in the range of 1315−1500 cm -1 were associated with the imidazole ring stretching [29]. The strong bands at 1132 and 1009 cm -1 were attributed to the C−N stretching of the imidazole units and the peaks from 400 to 450 cm -1 corresponds to Z-N in which confirms the binding of Zn 2+ to the N present in the imidazole ligand [29].…”

Section: A Sem and Ftir Analysismentioning

confidence: 99%

“…For the Z1200/EµPAD, the peak at 1583 cm -1 was due to the C=N stretching vibration of imidazole, and the bands in the range of 1315−1500 cm -1 were associated with the imidazole ring stretching [29]. The strong bands at 1132 and 1009 cm -1 were attributed to the C−N stretching of the imidazole units and the peaks from 400 to 450 cm -1 corresponds to Z-N in which confirms the binding of Zn 2+ to the N present in the imidazole ligand [29]. In AChE/MOF/µE along with the Z1200 MOF bands, the additional band at 1630 cm -1 represents NH bending and scissoring mode of AChE enzyme and at 1200 cm -1 to 1450 cm -1 the bands were attributed to C−N stretching vibrations [30].…”

Section: A Sem and Ftir Analysismentioning

confidence: 99%

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Development of Field Deployable Sensor for Detection of Pesticide From Food Chain

et al. 2021

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The use of pesticides in agriculture field remains a serious issue related to public health. This necessitates the need to develop a low cost/portable, sensitive and selective bio-sensing platform for detection of pesticides in food chain. In this work a low-cost biosensing platform for ultrasensitive detection of chlorpyrifos (CPF) is developed. Electrochemical micro Paper Analytical Device (EµPAD) is fabricated by conventional screenprinting technology. Metal Organic Framework (Z1200 MOF) having zinc metal and imidazole ligand is used as a transducing element which facilitates biocompatible matrix for Acetylcholinesterase (AChE) enzyme immobilization. The limit of detection for CPF is found be 3 ng/L with sensitivity 0.521 kΩ/ng L -1 /mm 2 . The sensor required 100µL of reagent and was tested with a linear concentration range of 10 ng/L to 1000 ng/L with response time of 5s. The sensor is further integrated with portable electronics based on Arduino microcontroller and Artificial Intelligence (AI) which provided economical, portable and user-friendly sensing platform. The stability of the sensor was 30 days. The developed sensor was also tested with real samples and the sensor response is in agreement with conventional technique.

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Section: A Sem and Ftir Analysissupporting

confidence: 84%

Section: A Sem and Ftir Analysismentioning

confidence: 99%

Section: A Sem and Ftir Analysismentioning

confidence: 99%

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Development of Field Deployable Sensor for Detection of Pesticide From Food Chain

et al. 2021

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“…Solvents play an important role in the ZIF-8 synthesis. Earlier studies reported that ZIF-8 can be formed in different solvents: DMF [19,21], methanol [2,[10][11][12][13][14], and water [25]. erefore, in our experiment, the effects of different solvents (methanol, DMF, water, and toluene) on the ZIF-8 formation were investigated in detail.…”

Section: Effects Of Solventsmentioning

confidence: 88%

“…In previous studies, ZIF-8 is synthesized in DMF at high temperature and pressure [2,3]. ZIF-8 can also be synthesized in methanol at room temperature under normal pressure [2,[10][11][12][13][14]. In these two approaches, the solvents and temperature/pressure have a critical role in the formation of ZIF-8.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Structural Properties and Catalytic Activities in Knoevenagel Condensation Reaction of Zeolitic Imidazolate Framework-8 Synthesized under Different Conditions

Thanh²,

Hiếu

2019

Advances in Materials Science and Engineering

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In the present study, the zeolitic imidazolate framework-8 (ZIF-8) was synthesized at both room temperature and high temperatures. The effects of solvents, molar ratios of precursors, reaction time, and temperature on the structural properties of the as-prepared materials were investigated. Moreover, the surface morphologies of the obtained specimens were characterized using X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, and nitrogen adsorption methods. The results show that ZIF-8 was formed in methanol and water at room temperature and in dimethylformamide (DMF) at high temperatures. Further, in methanol, the molar ratios of precursors and reaction time have negligible effects on the morphologies and structures of ZIF-8; however, in DMF, the reaction temperature has a significant influence on the microstructures of ZIF-8. The catalytic activities of the obtained materials were evaluated using the Knoevenagel condensation reaction, and ZIF-8 proves to be an excellent solid base catalyst.

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Biomorphic CdS/Cd Photocatalyst Derived from Butterfly Wing for Efficient Hydrogen Evolution Reaction

Zhong

Liu

2022

Adv Materials Inter

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as photocatalysts for hydrogen evolution reaction (HER). [5] For instance, TiO 2 , one of widely used photocatalysts, can absorb ultraviolet light to generate electron-hole pairs in the hydrogen evolution reaction. [6] However, the wide band gap (≈3.2 eV) for TiO 2 limits the utilization of sunlight as well as its photocatalytic activity. [7] Among inorganic photocatalysts, CdS is considered as one of the prominent materials for the visible light-driven water splitting because of the efficient utilization of solar energy and narrow band gap (≈2.4 eV). [8] Even so, it is generally difficult to maintain the structure stability of the pure CdS particles under reaction conditions due to oxygen-induced photocorrosion, which leads to low photocatalytic activity and stability and limits their application. [9] Meanwhile, a large number of studies show the rapid recombination of the photogenerated electron-hole pairs inside CdS photocatalyst, leading to low charge carrier use efficiency. [10] In order to promote the transfer and effective utilization of charge carriers, some noble metals (such as Pt) are loaded on the surface of CdS and construct Schottky junction heterostructures. [11] The scarcity and high cost of noble metals restricts their large-scale application, which motivates the search for low-cost alternatives. Cd, a nonnoble metal with excellent electrical conductivity, attracts much interest in the construction of Schottky junction photocatalysts with CdS. [12] Yu et al. prepared a Schottky junction photocatalyst with CdS and Cd clusters by post-treatment technique. [10] Wand et al. developed a photocatalytic reduction method to construct a Ag 2 S/CdS/Cd system for UV-vis-NIR photocatalytic hydrogen evolution. [13] These relevant researches give an inspiration that Cd metal can act as an electron trap to accelerate the charge carriers transfer after being composited with CdS.Recently, metal-organic frameworks (MOFs), newly developed materials formed by metal clusters and organic ligands, have been attractive materials in the field of adsorption, catalysis, electrochemistry, and so on. [14,15] In particular, MOFs have potential application in the visible light-driven hydrogen production with rich active sites, highly stable structure and large specific surface area. [3,16] It is noticed that MOF templatedirected derivatives which can precisely manipulate the dispersion states of the active sites are favorable for improving the photocatalytic activity as well as stability. [17] Li et al. prepared Photocatalytic splitting of water into hydrogen has attracted growing concerns as a promising strategy for the development of clean and renewable energy sources. Fabricating novel photocatalysts with high H 2 evolution rate and good cyclic stability is extremely vital for practical applications. Herein, a novel CdS/Cd 2 SO 4 (OH) 2 composite derived from cadmium nitrate doped Cd-MOF is deposited on the surface of butterfly wings with reticular hierarchical structure for efficient hydrogen evolution reaction. The combin...

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Preparation of nano‐ZIF‐8 in methanol with high yield

Cited by 66 publications

References 115 publications

Development of Field Deployable Sensor for Detection of Pesticide From Food Chain

Development of Field Deployable Sensor for Detection of Pesticide From Food Chain

Evaluation of Structural Properties and Catalytic Activities in Knoevenagel Condensation Reaction of Zeolitic Imidazolate Framework-8 Synthesized under Different Conditions

Biomorphic CdS/Cd Photocatalyst Derived from Butterfly Wing for Efficient Hydrogen Evolution Reaction

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