Stability of ZIF-8 nanopowders in bacterial culture media and its implication for antibacterial properties

Taheri, Mahdiar; Ashok, Deepu; Sen, Tanuka; Enge, T. Gabriel; Verma, Naresh K.; Tricoli, Antonio; Lowe, Adrian; Nisbet, David R.; Tsuzuki, Takuya

doi:10.1016/j.cej.2020.127511

Cited by 186 publications

(115 citation statements)

References 92 publications

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“…The degradation of ZIF-8 in L.B. and PBS media was 70-80 wt.%, which is higher than in pure water (22 wt.%) [85] . The stability of ZIFs materials can be enhanced by shielding the metalligand bond from the attack of water molecules [86] .…”

Section: Properties Of Zifs Materialsmentioning

confidence: 71%

“…However, it is essential to mention that the conversion depends on the ratio of ZIF-8/water [84] . The degradation of ZIF-8 is higher in culture media than in deionized water [85] . This observation could be due to the reaction between the released zinc ions with phosphate ions in phosphate-buffered saline (PBS) or with organic moieties in Luria Bertani (L.B.)…”

Section: Properties Of Zifs Materialsmentioning

confidence: 87%

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A Review on Removal of Carbon Dioxide (CO2) using Zeolitic Imidazolate Frameworks: Adsorption and Conversion via Catalysis

Abdelhamid

2022

Preprint

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Carbon dioxide (CO2) is one of the culprit causes of global climatic changes. Furthermore, the efficient separation of CO2 from other gaseous mixtures using ZIFs-based materials is vital for several processes such as flue gas separation, gas sweetening, and natural gas processing. Zeolitic imidazolate frameworks (ZIFs)-based materials are emerging adsorbents and catalysts for CO2 gas removal via adsorption and conversion into valuable chemicals. ZIFs-based adsorbents with high adsorption/conversion efficiencies and tunable properties can be achieved by judicious synthesis and fabrication methods. We reviewed ZIF-based materials for CO2 removal via adsorption and catalysis (e.g., cycloaddition, carboxylation, hydrogenation, N-formylation, electrocatalysis, and photocatalysis). In addition, recent development methods such as membrane synthesis and ways to improve the gas separation performance of ZIF membranes were highlighted. The prospective point of view to promote industrial applications and commercialization of ZIF-based materials was briefly discussed. Once challenges such as low performance and reproducibility for ZIFs-based materials are solved, scalability and cost-effectiveness should not become issues.

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Section: Properties Of Zifs Materialsmentioning

confidence: 71%

Section: Properties Of Zifs Materialsmentioning

confidence: 87%

A Review on Removal of Carbon Dioxide (CO2) using Zeolitic Imidazolate Frameworks: Adsorption and Conversion via Catalysis

Abdelhamid

2022

Preprint

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“…The absence of hydrophilic functional groups in the HmIm makes ZIF-8 inherently hydrophobic, contributing to the coating superhydrophobicity 23 . The spontaneous release of Zn 2+ ions from ZIF-8, due to its gradual decomposition in a broad range of pH values bears promise for its use as an antimicrobial agent 24,25 . Here, the presence of ZIF-8 is aimed at killing bacteria that may adhere to the coating due to damage to its structural integrity, and thus localized loss of superhydrophobicity, evaporation of their liquid shell environment before removal from the surface, or loss of the air layer due to prolonged immersion in a contaminated liquid (Fig 1b).…”

Section: Resultsmentioning

confidence: 99%

Shielding surfaces from viruses and bacteria with a multifunctional coating

Ashok

Taheri

Webb

et al. 2021

Preprint

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The spread of viral and bacterial pathogens mediated by contact with surfaces is a leading cause of infection worldwide. COVID-19 as well as the continuous rise of deaths associated with antibiotic-resistant bacteria highlights the need to impede surface-mediated transmission. We report a sprayable coating with an intrinsic ability to resist the uptake of bacteria and viruses from surfaces and droplets, such as those generated by sneezing or coughing. Our coating also provides an effective microbicidal functionality against bacteria, providing a dual barrier against pathogen uptake and transmission. This antimicrobial functionality is fully preserved following scratching and other induced damage to its surface or 9 days of submersion in a highly concentrated suspension of bacteria.

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“…Under both triggers, Van@ZIF-8@PDA showed effective antibiofilm ability in vitro and in vivo. Although ZIF-8 has many advantages, such as the ability to carry multiple drugs, modifiable sites on surface and the facile synthesis, it also has inherent disadvantage of easy degradation in phosphate buffer saline media and other common mediums in biological experiments, which raises questions about whether it is stable in vivo to realize multiple functions as it functions in vitro [ 61 , 62 ]. Up to now, not enough research has been done to shed light on this question.…”

Section: Nanocarriers Responsive To Environmental Factorsmentioning

confidence: 99%

Stimuli-responsive nanocarriers for bacterial biofilm treatment

et al. 2021

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Bacterial biofilm infections have been threatening the human’s life and health globally for a long time because they typically cause chronic and persistent infections. Traditional antibiotic therapies can hardly eradicate biofilms in many cases, as biofilms always form a robust fortress for pathogens inside, inhibiting the penetration of drugs. To address the issues, many novel drug carriers emerged as promising strategies for biofilm treatment. Among them, stimuli-responsive nanocarriers have attracted much attentions for their intriguing physicochemical properties, such as tunable size, shape and surface chemistry, especially smart drug release characteristic. Based on the microenvironmental difference between biofilm infection sites and normal tissue, many stimuli, such as bacterial products accumulating in biofilms (enzymes, glutathione, etc.), lower pH and higher H 2 O 2 levels, have been employed and proved in favor of “on-demand” drug release for biofilm elimination. Additionally, external stimuli including light, heat, microwave and magnetic fields are also able to control the drug releasing behavior artificially. In this review, we summarized recent advances in stimuli-responsive nanocarriers for combating biofilm infections, and mainly, focusing on the different stimuli that trigger the drug release. 摘要细菌生物膜常造成长期, 顽固的感染, 因此长久以来都严重威胁着全球人类的生命健康。由于生物膜会为内部病原体建造其保护性屏障, 阻碍药物的渗透, 因此传统的抗生素疗法通常难以根除生物膜。为了解决这一问题, 研究人员构建了许多新型的药物载体, 以作为颇具前景的生物膜治疗策略。其中, 刺激响应型纳米载体具有有趣的物理-化学性质, 例如尺寸, 形状和表面化学可调节的性质, 特别是智能药物释放性质, 因此吸引了人们的广泛关注。根据生物膜感染位置和正常组织之间的微环境差异, 人们利用多种刺激物, 比如生物膜内积累的细菌产物 (酶, 谷胱甘肽等), 低pH和高H 2 O 2 水平, 来设计药物的“按需释放”以清除生物膜。此外, 包括光, 热, 微波和磁场在内的外源刺激, 也可以用于人工控制药物的释放行为。本篇综述中, 我们总结了刺激响应型纳米载体在对抗细菌生物膜中的最新进展, 并着重于引发药物释放的多种刺激物。 Graphic abstract

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Stability of ZIF-8 nanopowders in bacterial culture media and its implication for antibacterial properties

Cited by 186 publications

References 92 publications

A Review on Removal of Carbon Dioxide (CO2) using Zeolitic Imidazolate Frameworks: Adsorption and Conversion via Catalysis

A Review on Removal of Carbon Dioxide (CO2) using Zeolitic Imidazolate Frameworks: Adsorption and Conversion via Catalysis

Shielding surfaces from viruses and bacteria with a multifunctional coating

Stimuli-responsive nanocarriers for bacterial biofilm treatment

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