ZnO nano-cages derived from ZIF-8 with enhanced anti mycobacterium-tuberculosis activities

Cui, Junwei; Wang, Le; Han, Yongqin; Liu, Weiguo; Li, Zhenyun; Guo, Zheng; Hu, Yuansen; Chang, Zheng; Yuan, Qipeng; Wang, Jinshui

doi:10.1016/j.jallcom.2018.06.339

Cited by 28 publications

(11 citation statements)

References 54 publications

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“…From the Figure 2 E–G, it showed that ZIF-8 and ZIF@ADH/NAD-MSN/LDH had the same rhombic dodecahedral structure, which was agreement with the results in the literatures [ 34 , 45 ]. It was concluded that the loading of MSN-NAD and enzyme had less effect on the crystal synthesis of ZIF-8 [ 34 , 46 , 47 ].…”

Section: Resultssupporting

confidence: 90%

Preparation of ZIF@ADH/NAD-MSN/LDH Core Shell Nanocomposites for the Enhancement of Coenzyme Catalyzed Double Enzyme Cascade

et al. 2021

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The field of enzyme cascades in limited microscale or nanoscale environments has undergone a quick growth and attracted increasing interests in the field of rapid development of systems chemistry. In this study, alcohol dehydrogenase (ADH), lactate dehydrogenase (LDH), and mesoporous silica nanoparticles (MSN) immobilized nicotinamide adenine dinucleotide (NAD+) were successfully immobilized on the zeolitic imidazolate frameworks (ZIFs). This immobilized product was named ZIF@ADH/NAD-MSN/LDH, and the effect of the multi-enzyme cascade was studied by measuring the catalytic synthesis of lactic acid. The loading efficiency of the enzyme in the in-situ co-immobilization method reached 92.65%. The synthesis rate of lactic acid was increased to 70.10%, which was about 2.82 times that of the free enzyme under the optimal conditions (40 °C, pH = 8). Additionally, ZIF@ADH/NAD-MSN/LDH had experimental stability (71.67% relative activity after four experiments) and storage stability (93.45% relative activity after three weeks of storage at 4 °C; 76.89% relative activity after incubation in acetonitrile-aqueous solution for 1 h; 27.42% relative activity after incubation in 15% N, N-Dimethylformamide (DMF) solution for 1 h). In summary, in this paper, the cyclic regeneration of coenzymes was achieved, and the reaction efficiency of the multi-enzyme biocatalytic cascade was improved due to the reduction of substrate diffusion.

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Section: Resultssupporting

confidence: 90%

Preparation of ZIF@ADH/NAD-MSN/LDH Core Shell Nanocomposites for the Enhancement of Coenzyme Catalyzed Double Enzyme Cascade

et al. 2021

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“…Figure 4(b) shows the highresolution XPS spectrum of Fe2p with two peaks with the binding energy of 710 eV and 723 eV assigned to Fe2p 3/2 and Fe2p 1/2 of Fe(III), respectively [26]. e XPS spectrum of C2s (Figure 4(c)) exhibits three peaks at 284.7 eV, 288.6 eV, and 286.5 eV corresponding to carbon components on the benzoic ring, the carboxylate group (O-C�O) of the terephthalate bridges [26], and the C-O bond [29]. e XPS spectrum of O1s shows three peaks with the binding energy of 529.9, 531.8, and 533.1 eV (Figure 4(d)).…”

Section: Ft-ir and Xps Spectroscopy Terephthalic Acid (Ta)mentioning

confidence: 99%

Heterogeneous UV/Fenton-Like Degradation of Methyl Orange Using Iron Terephthalate MIL-53 Catalyst

Danh²,

Hoài

et al. 2020

Journal of Chemistry

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The synthesis and degradation of methyl orange (MO) in an ultraviolet-assisted heterogeneous Fenton-like process via the iron terephthalate (MIL-53) catalyst are demonstrated. MIL-53 material was characterized by means of X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), UV-Vis diffuse reflectance spectra (DR-UV-Vis), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and nitrogen adsorption/desorption isotherms. It was found that the obtained material shares an identical pattern of the MIL-53 structure with high crystallinity and also demonstrates the mesoporous phase with a pore diameter of around 4.2 nm and specific surface area, SBET, of 88.2 m2·g−1. MIL-53 with UV irradiation exhibits high catalytic activity for MO degradation by hydrogen peroxide. The factors affecting the efficiency of MO decomposition including pH of the solution, H2O2 concentration, catalyst dosage, initial MO concentration, and reaction temperature were addressed. The present catalyst is stable after four recycles with slight catalytic activity loss which makes it a potential candidate for environmental restoration.

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“…Zinc oxide (ZnO) is an n-type semiconductor with a wide bandgap (3.37 eV) and a large excitation binding energy (60 meV) at room temperature [21][22][23][24][25]. This material has unique electrical and photovoltaic properties, so it has been studied and applied in the fields of photocatalysis, gas sensing, medicine, electrochemistry, and solar cells [21][22][23][24][26][27][28][29][30][31][32]ZnO has extremely rich morphologies, depending on the synthesis method, such as spheres [27,30], nanorods [28], nanowires [29], and flower-shaped nano [32].…”

Section: Introductionmentioning

confidence: 99%

“…ZIF-8 is a metal-organic framework material made up of Zn atoms linked to meIm, forming the formula Zn(meIm) 2 . Therefore, it is possible to create porous ZnO structures via the thermal treatment of the ZIF-8 material [21,26]. Yang et al [34] indicated that the photocatalytic activity of the ZnO/ZIF-8 hybrid material was also improved, compared with ZIF-8.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-Assisted Rapid ZIF-8 Synthesis, Porous ZnO Preparation by Heating ZIF-8, and Their Photocatalytic Activity

Nguyen

Thien³

2021

Journal of Nanomaterials

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Zeolitic imidazolate framework-8 (ZIF-8) is synthesized quickly at room temperature in methanol with the support of ultrasound. Porous ZnO is also prepared via the thermal treatment of ZIF-8. The photocatalytic activities of the obtained materials are demonstrated via methylene blue (MB) decomposition under UV radiation. The obtained materials are characterized by means of X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), nitrogen adsorption/desorption isotherms, UV-Vis diffuse reflectance spectra (DR-UV-Vis), and photoluminescence spectra. The results indicate that ZIF-8 and the materials obtained from ZIF-8 by heating in the air have photocatalytic activity under UV irradiation. The ZnO sample obtained by ZIF-8 calcination at 660°C for 5 h has the highest photocatalytic activity. However, the MB degradation photocatalytic efficiency of the ZnO samples is even lower than that of the ZIF-8 samples, indicating that ZIF-8 is an effective photocatalyst in the treatment of environmental pollution.

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ZnO nano-cages derived from ZIF-8 with enhanced anti mycobacterium-tuberculosis activities

Cited by 28 publications

References 54 publications

Preparation of ZIF@ADH/NAD-MSN/LDH Core Shell Nanocomposites for the Enhancement of Coenzyme Catalyzed Double Enzyme Cascade

Preparation of ZIF@ADH/NAD-MSN/LDH Core Shell Nanocomposites for the Enhancement of Coenzyme Catalyzed Double Enzyme Cascade

Heterogeneous UV/Fenton-Like Degradation of Methyl Orange Using Iron Terephthalate MIL-53 Catalyst

Ultrasound-Assisted Rapid ZIF-8 Synthesis, Porous ZnO Preparation by Heating ZIF-8, and Their Photocatalytic Activity

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