ACS Applied Nano Materials
·
2023
·
IF 5.9
Aiqin Zhang,Qikai Qiao,Zhen Pei,Zihao Wang,Jiandong Guo,Yuanqing Li,Guangmei Zhai,Pengfei Fei,Jianjun Lu,Husheng Jia
Much attention has been paid to compound a ZIF-8 antibacterial agent with textiles for recycling. However, antibacterial inactivation may be caused by dissolution of the ZIF-8 antibacterial agent in postfinishing technology. In this work, a nondissolution-bonded T-ZIF-8-PEG-TPU photocatalyst was prepared by covalent immobilization, and then, bonded antibacterial fibers T-ZIF-8-PEG-TPU were fabricated by electrospinning technology. The microstructure of the fibers was regulated by optimizing the spinning solution concentration, PEG content, and conductive salt content. The optimum process parameters are 22 wt % spinning solution, 3.3 wt % PEG, and 0.5 wt % ZnCl2 conductive salt. The intrinsic relationship between the fiber microstructure and photocatalytic antibacterial property, moisture permeability, and hydrophobicity was investigated. The antibacterial rate of the fiber membrane against Staphylococcus aureus reaches 100% after 30 min of visible light irradiation, and the antibacterial rate of Escherichia coli is 99.6% after visible light irradiation for 120 min. The fiber membrane has a standard grade I moisture permeability rate and a certain waterproof effect. It has potential applications in the field of health protection such as medical dressings and medical protective products.
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高影响因子
CARBON
·
2021
·
IF 9.594
Yuchen Xiao,Huajun Yang,Xianhui Bu,Pingyun Feng
We report a family of carbon materials (denoted SFZ8C) prepared from templated carbonization of zeolitic imidazolate framework-8 (ZIF-8) in NaCl–ZnCl 2 eutectic salt. The hard-templating effect of the salt is utilized to sustain the framework and maximize the porosity during carbonization. In addition to rich surface nitrogen and oxygen species, SFZ8Cs have large specific surface area. These combined features give rise to excellent adsorption properties for light hydrocarbon gases. SFZ8Cs have both C 2 H 2 /CO 2 selective and C 3 /C 2 selective adsorption, as well as the ability to selectively remove impurities from methane. Particularly noteworthy is the excellent C 3 /C 2 selective adsorption performance by SFZ8C-900. Its propane/ethane selectivity (7.68) is on par with the best value (7.72) reported so far, yet SFZ8C-900 excels in propane uptake capacity. The multifunctional properties together with the ease for the mass production make SFZ8Cs promising for a number of important applications.
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高影响因子
CRYSTENGCOMM
·
2021
·Vol. 23
·期 24
·4327-4335
·
IF 3.545
Mei-Hua Chen,Qian-Ying Lu,Yi-Ming Li,Ming-Ming Chu,Xue-Bo Cao
ZnO semiconductors have been widely used as photocatalysts. However, the weak photodegradation under solar light restrains their further application. In this study, porous zeolitic imidazolate framework-8 (ZIF-8), which has a high specific surface, was combined with ZnO nanorods to fabricate ZnO@ZIF-8 core–shell heterostructures, with the ZnO nanorods and ZIF-8 as the core and the shell, respectively. Scanning electron microscopy and transmission electron microscopy measurements revealed that the ZnO nanorods were wrapped by a ZIF-8 shell. The pore size distribution of these ZnO@ZIF-8 nanocomposites included micropores, mesopores, and macropores. Moreover, a Brunauer–Emmett–Teller analysis showed an increase compared with the ZnO nanorods in the overall specific surface area. Due to a synergistic effect of ZnO and ZIF-8, the as-synthesized ZnO@ZIF-8 heterostructures exhibited high photocatalytic activity and completely degraded methylene blue in ∼4.5 min under solar light irradiation. Furthermore, stability experiments proved that the as-prepared ZnO@ZIF-8 nanocomposites retain over 95% of their photocatalytic activity after four cycles.
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高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Cui Sun,Jin-hua Zhang,Xiang-fei Yuan,Jia-ning Duan,Sheng-wen Deng,Jing-min Fan,Jeng-Kuei Chang,Ming-sen Zheng,Quan-feng Dong
The quasi-solid-state electrolytes (QSSEs) with an inorganic skeleton, a solid–liquid composite material combining their respective merits, exhibit high ionic conductivity and mechanical strength. However, most quasi-solid electrolytes prepared by immobilizing ionic liquid (IL) or organic liquid electrolyte in inorganic scaffold generally have poor interface compatibility and low lithium ion migration number, which limits its application. Herein, we design and prepare a ZIF-8-based QSSE (ZIF-8 QSSE) in which the ZIF-8 has a special cage structure and interaction with the guest electrolyte to form a composite electrolyte with good ionic conductivity about 1.05 × 10–4 S cm–1 and a higher lithium-ion transference number of about 0.52. With the ZIF-8 QSSE, a protype lithium battery coupled with LiCoO2 cathode shows good electrochemical performances with an initial discharge capacity of 135 mAh g–1 at 50 mA g–1 and a remaining capacity of 119 mAh g–1 after 100 cycles, only 0.119% capacity degradation per cycle. It is worth noting that the ZIF-8-based QSSEs have good thermal stability up to 350 °C that does not show thermal runaway, which is significantly higher than that of a conventional organic liquid battery system.
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PubMed
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2024
·Vol. 27
·期 32
·e202400241
·
IF 2.2
Donglin Jiang,Yuchen Zhou,Mengfan Du,Zezhi Chen,Huijuan Gong
Graphical The modification of ZIF-8 with dopamine results in a large amount of hydrophilic and CO 2 friendly groups introducing into the ZIF-8 molecules, and the structure and specific surface area of ZIF-8 is also improved. These factors lead to an improvement performance of ZIF-8 in the catalytic CO 2 absorption in water and alkaline solutions. CO 2 capture technology has been widely used to reduce CO 2 emissions, resulting in a variety of capture methods and materials. Among them, the more widely used is the chemical absorption method. However, the chemical absorption method has problems such as high energy consumption and slow absorption rate. In order to solve the above problems, we prepared an effective catalyst to improve the CO 2 absorption rate. ZIF-8 and hydrophilic ZIF-8-DA were prepared by in situ synthesis under ambient conditions. The catalytic effect of the hydration reaction of ZIF-8 and ZIF-8-DA was tested using CO 2 absorption regeneration experiments under aqueous and alkaline conditions, respectively. The results showed that the synthesized catalysts could significantly enhance the CO 2 absorption in water and alkaline solution. The addition of 0.1 wt % of ZIF-8 in alkaline solution increased the average CO 2 absorption by 1.80–15.84 %, respectively, while the addition of 0.1 wt % of ZIF-8-DA increased the CO 2 absorption by 7.01–25.36 %. In addition, both catalysts had excellent reusability and maintained high performance even after five absorption and regeneration cycles. Polymer dispersibility index (PDI) results showed that ZIF-8-DA dispersed more uniformly in aqueous solution.
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高影响因子
RSC Advances
·
2024
·Vol. 14
·期 48
·36063-36072
·
IF 3.9
Xuebin Hou,Wei Chen,Meihong Fan,Chen Shi
Chitosan (CS) is regarded as a promising sorbent due to its biodegradability, wide availability, easy processing, and multiple active groups. In this work, CS-based porous fibers (ZIF-n@CS) consisting of CS and zeolitic imidazolate frameworks (ZIFs) were fabricated through wet spinning and self-assembly methods. This combination effectively utilizes the dual advantages of CS and ZIFs, which effectively remove dyes from water and exhibit excellent recyclability. In addition, the adsorption mechanism of the adsorbent was explored through the analysis of adsorption kinetics, thermodynamics, isotherms, and chemical characterization after adsorption. This work provides an operable and universal strategy for the efficient adsorption of dyes, promoting the further promotion and application of MOFs and CS materials.
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PubMed
高影响因子
Journal of Material Cycles and Waste Management
·
2024
·
IF 2.7
Zhu Wenzhong,Zhu Xueting,Shen Weijian,An Nan,Wu Lina
Antibiotics are extensively employed in the treatment of human and animal ailments. However, their excessive use and poor biodegradability have led to a notable accumulation of antibiotics in the environment, presenting potential health hazards to humans. In this study, tetracycline (TC) was selected as a representative antibiotic, and a recyclable material, Mn-ZIF-67, was synthesized to degrade TC through adsorption and peroxidase-like activity. Mn-ZIF-67 significantly enhances the peroxidase-like activity of ZIF-67. The removal efficiency of TC was boosted by 300% compared to ZIF-67 within a 10-min timeframe. With its high catalytic activity and stability, Mn-ZIF-67 exhibits significant promise for the swift degradation and elimination of antibiotics from the environment.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Ru Jia,Fugui Xiao,Qiaofang Fu,Ying Wu
BiOI was modified with poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS) to function as an organic hole conductor, thereby accelerating the transfer of light-generated holes. Subsequently, the catalyst was immobilized on ZIF-8 to enhance the contact area between the active sites of the catalyst and the pollutant. The successful preparation of the ZIF-8@BiOI/PEDOT:PSS was confirmed through various characterizations. Compared to pure BiOI, the ZIF-8@BiOI/PEDOT:PSS composite material demonstrates markedly enhanced visible-light-driven photocatalytic activity in the degradation of Rhodamine B (RhB) dye. The ZIF-8@BiOI/PEDOT:PSS composite photocatalyst exhibits a maximum RhB degradation efficiency of 92.64%, with a degradation rate constant (k) approximately 2.9 times higher than that of pure BiOI. Additionally, the ZIF-8@BiOI/PEDOT:PSS also exhibits outstanding photocatalytic performance in the degradation of methylene blue and methyl orange. Moreover, its catalytic activity remains nearly unchanged after five consecutive reuse cycles, demonstrating excellent recyclability. This study presents a novel strategy for improving the photocatalytic performance of such materials.
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高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 25
·e202304989
·
IF 1.9
Ying Chen,Zhangyi Lv,Jinqiu Yuan,Mingchun Bi,Yuning Liang
Graphical ZIF-67 nanocubes (ZIF-67 NCs) had been etched to produce small amounts of cross-linked Co-LDH-1 while preserving the cubic structure, which provided sufficient quantities of cobalt ions. The catalytic activity of OER has been enhanced by the cubic-structured LDH, which leads to a significantly lower overpotential in alkaline media and a calculated lower activation energy Ea. To address the substantial energy needs of the quickly evolving modern civilization, efforts are still needed to provide sustainable renewable energy sources. The electrocatalytic Oxygen evolution reaction (OER) is one of the essential technologies used in the various hydrogen production techniques. ZIF-67 nanocubes (ZIF-67 NCs) were synthesized in an aqueous solution and used as sacrificial templates. Cobalt nitrate hexahydrate was added under water bath conditions, resulting in the evolution of numerous small layered layers of cobalt hydroxide. This ultimately led to the formation of multilayered, three-dimensionally crosslinked Co-LDH with a porous networked cubic morphology. Hydrolysis of Co 2+ at different concentrations produces different degrees of weak acidic environments, and the loose LDH on the cubic structure of the best catalyst, Co-LDH-1, exposes more active cobalt sites for the OER, which results in a high electrochemically active surface area, with an overpotential of 354 mV and a Tafel slope of 79.06 mV dec −1 at a current density of 10 mA cm −2 , and good stability and low activation under alkaline condition also has good stability and low activation energy. It provides us an easy and practical plan for logically creating ZIF-derived hydroxide materials, leading to the development of affordable and effective electrocatalysts.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Yilin Zhang,Yanhui Long,Kaiyi Wang,Xiaosong An,Liboting Gao,Zijiang Zhao,Jianhua Yan,Hao Zhang
Developing alternatives to the energy-intensive Haber–Bosch (H–B) process for ammonia synthesis is imperative yet challenging. Herein, Ni-modified zeolitic imidazolate framework (ZIF) Ni@ZIF-67 nanocrystals were synthesized and applied in a dielectric barrier discharge reactor for plasma-assisted ammonia synthesis under ambient pressure. Introducing ZIF-67 into the plasma enhanced the ammonia synthesis rate by an order of magnitude, evidencing strong plasma–catalyst synergism. The superior performance was attributed to the unique microstructure featuring a high specific surface area and abundant porosity, which improved gas adsorption and intensified microdischarge within the plasma. Further incorporation of Ni into ZIF-67 (Ni@ZIF-67) resulted in a maximum ammonia synthesis rate of 289.45 μmol g–1 min–1 and an energy yield of 1.83 g kWh–1─a 32.0% improvement over ZIF-67─while maintaining structural stability over repeated cycles. Moreover, the confinement of NH3 within sub-Debye-length micropores suppressed plasma-induced decomposition. The addition of Ni further significantly boosted both the hydrogen/ammonia adsorption capability and discharge efficiency, which promoted ammonia formation, especially in a H2-rich atmosphere. These findings underscored the potential of Ni@ZIF-67 as a promising catalyst for plasma-assisted ammonia synthesis, providing a viable alternative to the conventional H–B process.
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高影响因子
Advanced Materials Interfaces
·
2016
·Vol. 3
·期 24
·1600725
·
IF 3.365
Xiu Dai,Yu Cao,Xiaowei Shi,Xinlong Wang
In this study, the nanoparticles of metal–organic framework ZIF-8 are incorporated into the poly(lactic acid) (PLA) to prepare the nanocomposite electrospun membrane. The diameter and the surface roughness of the fibers can be successfully controlled by increasing the content of ZIF-8 in the membranes. The prepared PLA/ZIF-8 membranes have increased oil wettability and significantly improved mechanical property compared with pure PLA membrane. The tensile strength, stain at break of PLA/ZIF-8 membrane with 0.5 wt% ZIF-8 are increased to 5.02 MPa and 88.81% compared to 2.77 MPa and 57.89% for pure PLA membranes, respectively. The PLA/ZIF-8 membranes are proved to be good candidate for oil/water separation with high efficiency because of the fast oil wetting ability, the roughness of fibers, and the adsorption effect of the porous ZIF-8 nanoparticles.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qianqian Chen,Xiaobing Yang,Xingping Fu,Junjie Pan,Junmei Zhou,Gengwu Zhou,Kejun Cheng
Currently, antibiotics are extensively utilized in the pharmaceutical industry to assist humans and animals in combating various infectious diseases. The extensive use of various antibiotics enhances the quality of life. However, it can also have negative effects on the environment and human health, including water pollution and the rise of antibiotic-resistant microorganisms. To date, antibiotics have been detected in rivers, groundwater, and even drinking water. There is an urgent need to design and develop advanced materials for the remediation of antibiotics present in our environment. In this paper, we successfully synthesized a novel Ag 2 S-ZnS/ZIF-8 hollow heterojunction via facile sulphuration and solvothermal methods. This heterojunction was employed as a catalyst for the degradation of tetracycline (TC) in water under UV and visible light irradiation. The physicochemical properties of the as-synthesized catalysts were thoroughly analyzed using XRD, EDS, SEM, BET, XPS, TEM, ESR, UV–vis techniques. The results demonstrate that Ag 2 S-ZnS/ZIF-8 displays enhanced photocatalytic activity for TC degradation no matter under visible or UV light irradiation. After 10 min of UV light irradiation, its photocatalytic degradation efficiency was achieved 92.74 %. Additionally, Ag 2 S-ZnS/ZIF-8 was able to degrade 92.14 % of TC (visible light, with 35 min). The corresponding kinetic rate constant of Ag 2 S-ZnS/ZIF-8 is 0.145 min −1 (UV light) and 0.043 min −1 (visible light), respectively. Furthermore, Ag 2 S-ZnS/ZIF-8 also shown excellent stability for the degradation of TC in the presence of visible light. This is a result of its high specific surface area, superior photocurrent and efficient separation of photo-generated electrons-hole pairs. Apart from this, the photocatalytic degradation mechanism of TC over Ag 2 S-ZnS/ZIF-8 is discussed in detail.
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高影响因子
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