ChemNanoMat
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2023
·Vol. 9
·期 7
·e202300073
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IF 3.8
Lingling Xia,Yucen Li,Jiwei Cui,Ming Hu
Graphical Hollow ZIF-8 was embedded with polyphenol networks and polyethylene glycol networks. The double networks enhanced the stability of the hollow ZIF-8, showing promise in water treatment both by adsorption and photocatalysis. Hollow ZIF-8 particles are promising materials for water treatment because of the high porosity and catalytic activities under photon irradiation. However, hollow ZIF-8 particles can easily degrade under harsh conditions due to the weak stability. Here, we synthesize hollow ZIF-8 particles with polyphenol and polyethylene glycol networks embedded. The multiple interactions among the ZIF-8 frameworks and the networks increase the mechanical and chemical stability of the hollow ZIF-8 particles as suggested by a series of spectra. Uptake of methylene blue about 128 mg/g by the hollow particles is realized. Furthermore, hydroxyl or superoxide radicals for degradation of the adsorbed methylene blue are effectively generated through irradiation of the hollow ZIF-8 particles. In a water treatment test, the model pollute with a concentration of 50 mg/L is completely removed within half an hour. The performance of the recycled hollow ZIF-8 particles is proved to be significant, indicating the practical potential of the material.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2018
·Vol. 19
·期 5
·1424
·
IF 3.687
Miaad Adnan,Kai Li,Jianhua Wang,Li Xu,Yunjun Yan
A hierarchical mesoporous zeolitic imidazolate framework (ZIF-8) was processed based on cetyltrimethylammonium bromide (CTAB) as a morphological regulating agent and amino acid (l-histidine) as assisting template agent.Burkholderia cepacialipase (BCL) was successfully immobilized by ZIF-8 as the carrier via an adsorption method (BCL-ZIF-8). The immobilized lipase (BCL) showed utmost activity recovery up to 1279%, a 12-fold boost in its free counterpart. BCL-ZIF-8 was used as a biocatalyst in the transesterification reaction for the production of biodiesel with 93.4% yield. There was no significant lowering of conversion yield relative to original activity for BCL-ZIF-8 when continuously reused for eight cycles. This work provides a new outlook for biotechnological importance by immobilizing lipase on the hybrid catalyst (ZIF-8) and opens the door for its uses in the industrial field.Keywords:adsorption method;biodiesel production;Burkholderia cepacialipase (BCL);hexahedral ZIF-8;hierarchical ZIF-8;surfactant
研究领域:
生物技术
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催化化学
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可再生能源
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
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2025
·Vol. 15
·期 15
·11503-11510
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IF 4.6
Ping Li,Xiaolin Yue,Anhong Li,Can Cui,Lan Wang,Wenyuan Tan
Cobalt 2-methylimidazole (ZIF-67) has been broadly explored for its applications in the treatment of antibiotics in wastewater. However, ZIF-67 in powder form is difficult to recover. In the study, ZIF-67 and Polyvinylidene Fluoride (PVDF) were blended via electrospinning to prepare ZIF-67/PVDF membrane for adsorption of ciprofloxacin (CIP). The ZIF-67/PVDF membrane demonstrated outstanding adsorption efficiency for CIP, with a maximum adsorption capability of 4087.5 μg cm−2. The adsorption performance of ZIF-67/PVDF remains stable across a wide pH range and is unaffected by ionic interference. The ZIF-67/PVDF adsorbent follows pseudo-second-order kinetics and the Langmuir model. Furthermore, thermodynamic research indicates the adsorption of CIP is a spontaneous and exothermic process. It is proposed that the adsorption mechanism of CIP onto ZIF-67/PVDF involves electrostatic interactions, hydrogen bonding, π–π interactions, coordination bonding, and hydrophobic interactions.
研究领域:
环境科学
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材料科学
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水处理技术
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Changdie Cao,Yali Zhao,Yurun Dai,Yanying Wei,Qibin Xia,Haihui Wang
Sulphur hexafluoride (SF 6 ) is a commonly utilized insulation gas in electrical equipment because to its superior insulating capabilities and arc extinguishing characteristics, which holds high recycling value and necessity from the economic and environmental perspective. However, traditional method of recovering SF 6 based on cryogenic distillation is energy consuming, alternative separation technic is urgently required. Herein, a variety of ZIF-8 membranes fabricated via fast current-driven synthesis are proposed for N 2 /SF 6 separation. For a typical insulation gas in gas insulated switchgear comprising 70 % N 2 and 30 % SF 6 , the ZIF-8 membrane presents a N 2 /SF 6 selectivity up to 809 and a high N 2 permeance of 557 GPU with outstanding pressure resistance, which indicates that the ZIF-8 membrane separation would be an excellent new route for highly efficient SF 6 recovery.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2021
·Vol. 329
·期 2
·1011-1017
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IF 1.371
Ma Yu,Dou Weixin,Yang Weiting,Yang Weikang,Pan Qinhe
Recently, highly porous metal–organic frameworks (MOFs), with excellent porosity and abundant functional groups, have represented a new addition to the area of capturing uranium ion pollutants. To achieve high adsorption capacity and removal efficiency of uranium, it is significant to modify the morphology of MOF-based adsorbents. In this contribution, two hollow structured ZIF-8 adsorbents were used for the adsorptive separation of uranium from aqueous solution. Both of them showed faster adsorption rate and larger adsorption capacity than pristine ZIF-8, providing the prospect of hollow MOF materials to the application of uranium extraction.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
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.
研究领域:
材料科学
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电化学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2022
·
IF 3.656
Qiuping Fu,Jie Lou,Hui Yuan,Rongbin Zhang,Chunmei Zhang,Changli Mo,Jun Luo,Lei Zha,Pan Wu
ZIF-67@CS composites were prepared by in-situ growth method. The phase and structure of ZIF-67@CS composite were characterized by X-ray powder diffraction (XRD) and fourier transform infrared spectroscopy (FT-IR). The morphology of the materials was characterized by field emission scanning electron microscope (SEM). X-ray photoelectron spectroscopy (XPS) measurements demonstrated the existence of Pb(II) after the adsorption process of composite materials. The adsorption of Pb(II) by composite material conforms to Langmuir model, the theoretical maximum adsorption capacity is 505.051 mg/g. The pseudo-second-order kinetic model can well describe the adsorption kinetic process.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Energies
·
2023
·Vol. 16
·期 21
·7232
·
IF 3.2
Congxiu Guo,Guilin Li,Yujia Wu,Xuhui Wang,Yu Niu,Jiao Wu
Porous carbon materials derived from ZIF-8 have attracted extensive research attention on account of their large surface area, tunable mesoporosity and abundant nitrogen content. However, directly carbonized ZIF-8 usually suffers from a low electronic conductivity, poor wettability and relatively low mesoporosity, which severely restricts their capacitive performance. Herein, P-doped modified carbon materials derived from ZIF-8 (ZPCs) were synthesized by using nontoxic phytic acid as a phosphorus source, followed by carbonization at high temperature. Benefiting from its relatively high specific surface area of 911.7 m2g−1and higher ratio of mesopores, as well as N, O and P doping, ZPC-1000 delivers the largest specific capacity, up to 219.4 F g−1at 1 A g−1, among the prepared samples and an outstanding cycle span, retaining 100% capacity after 2000 cycles at 5 A g−1. In this work, we highlight the strategy of constructing a synergistic effect between high mesoporosity and heteroatom doping, which can greatly boost the capacitive performance of carbon materials.Keywords:P doping;ZIF-8;porous carbon;capacitive performance
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Wei Yang,Yudi Kong,Hong Yin,Mingli Cao
Water pollution caused by severe heavy metal contamination poses a significant threat to freshwater resources and aquatic ecosystems, necessitating effective removal strategies. This study focuses on the synthesis of highly crystalline ZIF-8 particles using an energy-efficient, cost-effective in-situ self-assembly method. The resulting particles exhibit exceptional specific surface area (1663.413 m 2 /g) and particle sizes ranging from approximately 60 to 80 nm. We conducted batch adsorption experiments using Cu(II) and Pb(II) solutions as representative models of water pollution to evaluate ZIF-8's adsorption capacity for these heavy metal ions . Remarkably, ZIF-8 demonstrated a significantly higher maximum adsorption capacity for Cu(II) (378.5 mg/g) compared to Pb(II) (92.74 mg/g) under identical experimental conditions. By employing adsorption kinetics and isotherm models, as well as density functional theory calculations, we elucidated that Cu(II) removal from water by ZIF-8 relies on ion exchange and coordination interactions, whereas Pb(II) elimination primarily occurs through surface adsorption due to ZIF-8's elevated micropore structure and specific surface area. Moreover, we proposed a sustainable solution by solidifying the waste ZIF-8 adsorbent into cement-based materials, offering an innovative and environmentally friendly alternative to landfill disposal. This methodology not only demonstrates noteworthy economic effectiveness but also ensures harm-free treatment and repurposing of waste adsorbents, providing valuable insights into secure and sustainable heavy metal removal strategies.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Nanomedicine
·
2025
·
IF 6.5
Zhenzhen Luo,Dunhuang Wang,Lie Lin,Rui Zhou,Yuanyuan Su,Zongkai Zhang,Jing Hu,Yaqing Dai,Jingjing Wu,Xiaoyan Huang,Yufei Zhou,Liuyun Gong
Introduction Intensive cancer treatment with nanoplatform is widely exploited in the clinic, the emerging nanomedicine offers an unparalleled opportunity for encapsulating potential antitumor drugs in a nano-carrier. Apoptin (AP), a coding protein of VP3 gene, stem from the chicken anemia virus (CAV), can be activated in malignant cells selectively and prevents the dividing cancer cells from repairing their DNA lesions, thereby forcing them to undergo apoptosis. Herein, a three-step intelligent biodegradable drug delivery nanoplatform was designed.Methods First, a hollow ZIF-8 was synthesized, embedded with platinum nanoparticle to form ZIF-8Pt, and then loaded with AP, and lastly formed AP@ZIF-8Pt, which possess pH-responsive drug release and cancer-targeted ability.Results As expected, both in vitro and in vivo experiment demonstrated that AP@ZIF-8Pt performed treatment effects in hepatocarcinoma through relieving tumor-hypoxic microenvironment, inhibiting cell proliferation and promoting cell apoptosis. Further transcriptomic analysis showed that the specific mechanism of the AP@ZIF-8Pt was thermogenesis, signaling pathways regulating pluripotency of stem cells, ribosome, prion disease and PI3K-Akt signaling pathway.Discussion This work highlights a new strategy for liver cancer treatment and provides a reference for treating malignant tumors.
研究领域:
肿瘤学
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纳米医学
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生物化学
✓ 已验证
产品关联
DOI
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.
研究领域:
环境科学
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材料科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Qianxi Wang,Yuting Lei,Yunyi Cui,Jingruolan Lin,Wei Huang,Yi He
Thermogravimetric analysis (TGA) is a key material characterization method for studying the thermal stability and thermochemical process. However, the common TGA for bulk samples lacks sufficient spatial information, which blurs the intrinsic thermal decomposition characteristic and limits the understanding of the structure–performance relationship. Here, we report a dark-field microscope (DFM) method for studying thermal desorption process of I2 from I2-loaded zeolitic imidazolate framework-8 (I2@ZIF-8). Because of the high spatial resolution, DFM enables the imaging and tracking of the local mass loss of I2 in single I2@ZIF-8 particles at different reaction temperatures. We obtain from the DFM images the single-particle thermogravimetric and differential thermogravimetric curves to evaluate the inherent thermal stability of single I2@ZIF-8 particles. We also find the heterogeneous thermal decomposition property among different I2@ZIF-8 particles. Furthermore, we demonstrate the capacity of DFM to quantitatively determine thermal kinetics parameters such as the diffusion coefficient and activation energy of I2 in individual and multiple ZIF-8 particles. These useful results are essential for developing high-efficient porous adsorbents for the capture of I2.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）