WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 15
·1-24
·
IF 3
Zang Shuyan,Wang Shuai,Li Xue,Chen Xinru,Wang Qian,Wang Juan
The removal of both organic and inorganic arsenic is crucial for safeguarding the environment and human health, which constitutes a key aspect of sustainable development. In this study, a novel method integrating Fenton oxidation with ZIF-8 adsorption was developed for the simultaneous treatment of roxarsone (ROX) and arsenite (As(III)) from wastewater. ZIF-8 was hydrothermally synthesized and characterized using X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Elemental Mapping (EM), Brunauer–Emmett–Teller (BET) surface area analysis, and zeta potential analysis. Comprehensive characterization demonstrated that the synthesized ZIF-8 exhibited a well-defined rhombic dodecahedral morphology with smooth crystal surfaces and an exceptionally high specific surface area of 1836.23 m 2 /g. Under the optimized conditions for Fenton oxidation (4.90 mmol/L H 2 O 2 , 0.1380 g/L FeSO 4 ·7H 2 O, pH 3, 30 min) and ZIF-8 adsorption (0.1 g/L ZIF-8, pH 6, 180 min, 25℃), the integrated system exhibited remarkable removal efficiencies of 92.32% for ROX (20 mg/L) and 95.16% for As(III) (1 mg/L). Specifically, compared to the individual processes, the removal efficiency of ROX was increased by 20.59% (versus Fenton-only) and 52.63% (versus ZIF-8-only), while that of As(III) was enhanced by 29.17% and 35.51%, respectively. Additionally, the integrated system exhibited maximum adsorption capacities of 107.76 mg/g for ROX and 17.70 mg/g for As(III), further confirming the presence of synergistic effects between Fenton oxidation and ZIF-8 adsorption. The adsorption processes for ROX and As(III) followed pseudo-second-order kinetics and were best described by the Langmuir adsorption model, suggesting chemisorption and monolayer adsorption on a homogeneous surface. The removal mechanism in the synergistic method involved three primary pathways: oxidation reactions (•OH), electrostatic interactions (-OH/-NH 2 ), and precipitation (FeAsO 4 ). This study demonstrates that the proposed synergistic method (Fenton@ZIF-8) is a promising technology for the simultaneous removal of both organic and inorganic arsenic species from contaminated water, with strong potential for practical application in wastewater remediation.
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RUSSIAN JOURNAL OF GENERAL CHEMISTRY
·
2025
·Vol. 95
·期 9
·2457-2467
·
IF 0.8
Sun Yanhua,Kong Xiangyang,Xi Shuoyan,Xu Zhuoyue,Zhang Yuhan
Salvianolic acid (SAB) is a natural flavonoid compound possessing significant pharmaceutical value. However, the extraction and purification of SAB from natural products are hindered by the complexity and low concentration of matrix components. In this research, a new surface imprinted polymer with core-shell structure, denoted as ZIF-8@MIPs, was successfully developed using porous metal-organic frameworks (MOF) ZIF-8 as the scaffold. ZIF-8@MIPs exhibited remarkable selective extraction and enrichment of SAB from Salviorrhiza . Series of characterizations and adsorption experiments demonstrated that ZIF-8@MIPs possessed a typical core-shell octahedral structure with a high specific surface area. The resultant high-density imprinted sites allowed the ZIF-8@MIPs to exhibit a high adsorption capacity (46.7 mg/g) and exceptional selectivity (IF = 3.11) for SAB, while achieving adsorption equilibrium within 90 min. Notably, the ZIF-8@MIPs maintained an adsorption capacity of 89.2% for SAB after 7 cycles of adsorption-desorption experiments, indicating good reusability. Furthermore, a solid-phase extraction column was established utilizing the ZIF-8@MIPs as the adsorbent, and the content of SAB in the Salviorrhiza extract was determined by combining this with HPLC. The spiked recovery rate ranged from 87.70 to 92.90%, with RSD of 2.87–3.43%, demonstrating the reliability and reproducibility of this method. In conclusion, the ZIF-8@MIPs developed in this study offer a promising approach for the selective extraction of active flavonoids from natural matrices, with potential application in application prospects.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Lilin Sun,Tiantian Wu,Xiaoyang Fang,Rongrong Li
As a highly valued natural lignocellulosic biopolymer, bamboo plays a critical role in developing sustainable material systems. However, when exposed to rainwater, this biopolymeric substrate is highly susceptible to fungal degradation, making it difficult for traditional fungicides to retain long-term efficacy. Their inevitable leaching weakens antifungal performance and raises environmental concerns, while conventional treatments often compromise the mechanical integrity of the lignocellulosic structure. Therefore, developing green, durable, and substrate-compatible antifungal technologies is essential. Nanoscale zinc oxide (ZnO) is a promising inorganic antimicrobial agent due to its multi-mechanism activity and favorable biosafety, yet issues like agglomeration, poor stability, and rapid ion release limit its long-term performance. To overcome these drawbacks, a stepwise in-situ construction strategy is introduced, where a ZnO layer is first grown as both the core and zinc source to direct ZIF-8 formation, yielding a shell that stabilizes ZnO and ensures sustained Zn 2+ release for long-lasting antifungal efficacy. Comprehensive characterization verifies the successful formation of a compact, crystalline core-shell heterostructure well-integrated with the biopolymer matrix. Mechanical testing confirms that the ZnO@ZIF-8 treatment preserves the intrinsic mechanical properties of the bamboo, maintaining a tensile strength of 96.52 MPa while elevating bending strength by 31.79% to 169.46 MPa. Anti-mold and anti-leaching evaluations further demonstrate excellent durability, maintaining Grade 0 (no mold growth) infection after 14 days of leaching and 28 days of humid-heat incubation. This work presents an efficient, durable, and environmentally friendly antifungal strategy for bamboo, offering valuable insights into the application of metal oxide-MOF composites in bamboo protection.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yusof A.Y.A. Mohammed,A.M. Abdel-Mohsen,Qi-Jun Zhang,Mohammad Younas,Lu-Bin Zhong,Jia-Cheng E. Yang,Yu-Ming Zheng
Hexavalent chromium Cr(VI) is one of the most toxic heavy metal ions. Therefore, the removal of this contaminant from wastewater is of particular importance. Herein, a novel zeolitic imidazolate framework (ZIF-8) nanoparticles based electrospun polyacrylonitrile (PAN)/polyethylenimine (PEI) nanofibrous composite membranes (NCMs) were prepared and characterized by SEM, XRD, FTIR, TGA and other characterization techniques. The NCMs were tested for the adsorption of Cr(VI) from water. Results showed that the inclusion of PEI tailored the surface of the NCM to be superhydrophilic. The prepared electrospun NCM showed a high adsorption capacity for Cr(VI) (up to 403.5 mg·g −1 ) under ZIF-8 concentration of 5 wt%. More importantly, introducing ZIF-8 up to 5 % did not only increase the adsorption capacity but also enhanced the thermal stability, mechanical strength, and structure of the NCM. The experimental analysis of co-existing ions and the reusability of up to ten cycles showed that the optimized PAN/PEI@ZIF-8 NCM exhibited good selectivity and excellent stability for wastewater treatment. The adsorption kinetics followed the pseudo-second-order model and the adsorption isotherm could be fitted well by the Langmuir model. Thermodynamics revealed that the adsorption process was spontaneous and endothermic. The adsorption mechanism was found to be mainly electrostatic attraction and reduction. This study demonstrated the potential of ZIF-8-incorporated PAN/PEI NCMs for the removal of Cr(VI) from water.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Liu-Kun Wu,Zhen-Liang Xu,Min Tong,En-Chao Li,Yong-Jian Tang
In recent years, the incorporation of nanoparticles in nanofiltration membranes has received extensive attention as a practical approach to improve membrane performance. However, previous studies attributed the enhancement of TFN membrane performance primarily to the advanced properties of nanoparticles and the structural impact on the polyamide layer, while ignoring the influence and contribution of the substrate. This study provides compelling evidence that the effect on the substrate of blending nanoparticles contributes to the enhancement of membrane permeability. We quantified the changes in permeation resistance composition of the TFC and TFN membranes before and after heat treatment by a resistance-in-series model, combined with the addition of polyvinylpyrrolidone. After incorporation of ZIF-8, the permeation resistance of substrate decreased from 0.177 h bar m −1 to 0.0313 h bar m −1 after heat curing, while that of PA layer decreased from 0.1375 h bar m −1 to 0.0972 h bar m −1 . In addition, we removed the PA layer of TFC and TFN membranes by acid hydrolysis. The results indicated that the PWP of TFN membrane were continuously greater than that of the TFC membrane, which supports our conclusion that nanoparticles impacted the shrinkage of substrate during heat curing. The current study provides a novel mechanistic understanding of the improvement of TFN membrane performance by nanoparticles.
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Frontiers in Bioengineering and Biotechnology
·
2023
·
IF 5.7
Du Longhai,Zhu Guanghao,Xu Yanlong,Han Binxu,Wang Yu,Zhu Minhui,Meng Yingdi,Chen Huaiwen,Yu Zuochong
Introduction: The toxic side effects of systemic high-dose chemotherapy and poor sensitivity to radiotherapy hinder the survival rate of patients with osteosarcoma (OS). Nanotechnology offers new solutions for OS treatment; however, conventional nanocarriers suffer from inadequate targeting of tumors and short in vivo circulation time.Methods: Here, we designed a novel drug delivery system, [Dbait-ADM@ZIF-8]OPM, which uses OS-platelet hybrid membranes to encapsulate nanocarriers, to enhance the targeting and circulation time of nanocarriers, thereby enabling high enrichment of the nanocarriers in OS sites.Results: In the tumor microenvironment, the pH-sensitive nanocarrier, which is the metal-organic framework ZIF-8, dissociates to release radiosensitizer Dbait and the classical chemotherapeutic agent Adriamycin for the integrated treatment of OS via radiotherapy and chemotherapy. Benefiting from the excellent targeting ability of the hybrid membrane and the outstanding drug loading capacity of the nanocarrier, [Dbait-ADM@ZIF-8]OPM showed potent anti-tumor effects in tumor-bearing mice with almost no significant biotoxicity.Conclusion: Overall, this project is a successful exploration of the combination of radiotherapy and chemotherapy of OS treatment. Our findings solve the problems of the insensitivity of OS to radiotherapy and the toxic side effects of chemotherapy. Furthermore, this study is an expansion of the research of OS nanocarriers and provides new potential treatments for OS.
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Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 14
·7564-7571
·
IF 11.9
Yechen Si,Yunhao Jiang,Jiayi Liu,Hongyu Guan,Xing-Long Wu,Changsheng Shan
It is a huge challenge to develop safe and stable lithium metal batteries with high energy density owing to the growth of Li dendrites. Herein, for the first time, an oxidized ZIF-8/polyacrylonitrile (OZPAN) fiber film is designed as a multifunctional interlayer for constructing a novel Li metal battery with superior performance. The excellent lithophilicity and uniform porous structure of the OZPAN interlayer could anchor and regulate Li-ion flux with high ionic conductivity (2.22 mS cm−1), high Li+ transference number (0.78) and homogeneous Li deposition. Therefore, the Li//Li symmetric cell exhibits ultralow overpotential (11 mV) with long-term cycling stability and dendrite-free Li deposition. Moreover, Li//LiFePO4 (LFP) full cell has an extremely high capacity (162 mA h g−1 at 1C, close to the theoretical specific capacity of LFP), outstanding rate performance and high coulombic efficiency (more than 94%) during 500 cycles. This study demonstrates a promising interlayer strategy for developing high-performance Li metal batteries.
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CELLULOSE
·
2023
·Vol. 30
·期 7
·4353-4371
·
IF 5.7
Wang Peiwen,Chen Congjin,Shen Hangyu,Wei Jinrou,Lan Yi,Liao Xiufen,Fan Hui,Hu Huayu,Zhang Yanjuan,Huang Zuqiang
Ciprofloxacin (CIP) contamination can induce the growth of antibiotic-resistant bacteria, which poses a great threat to the environment. Herein, a composite adsorbent material, sodium lignosulfonate/chitosan@ZIF-8 (SLS/CS@ZIF-8), was synthesized by introducing sodium lignosulfonate into chitosan foams (CS-FM) and then loading ZIF-8 onto the resulting foams (SLS/CS-FM) by in situ immobilization to effectively remove CIP from water. The adsorption behaviour and mechanism were studied through batch experiments and characterization analysis. The results showed that the maximum adsorption capacity of SLS/CS@ZIF-8 was 413 mg/g with a CIP concentration of 250 mg/L at 303 K, which was more than most previously reported adsorbents. The CIP adsorption of SLS/CS@ZIF-8 was better described by the pseudosecond-order kinetic model and Langmuir isothermal model. The adsorption was a spontaneous and endothermic physical adsorption process with increased entropy. The adsorption involved electrostatic interactions, hydrogen bonding interactions and π-π interactions. This work provides a potential adsorbent for the effective removal of CIP from wastewater and a new, low-carbon, green chemical technology for the high-value utilization of lignin.
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Foods
·
2023
·Vol. 12
·期 4
·813
·
IF 5.2
Yunfei Xie,Xianghui Dong,Nifei Cai,Fangwei Yang,Weirong Yao,Lijun Huang
Bisphenol A (BPA) is an endocrine disruptor which is widely present in fish under the influence of environmental pollution. It is essential to establish a rapid detection method for BPA. Zeolitic imidazolate framework (ZIF-8) is a typical metal-organic framework material (MOFs) with a strong adsorption capacity, which can effectively adsorb harmful substances in food. Combining MOFs and surface-enhanced Raman spectroscopy (SERS) can achieve rapid and accurate screening of toxic substances. In this study, a rapid detection method for BPA was established by preparing a new reinforced substrate Au@ZIF-8. The SERS detection method was optimized by combining SERS technology with ZIF-8. The Raman peak at 1172 cm−1was used as the characteristic quantitative peak, and the lowest detection concentration of BPA was as low as 0.1 mg/L. In the concentration range of 0.1~10 mg/L, the linear relationship between SERS peak intensity and the concentration of BPA was good, and R2was 0.9954. This novel SERS substrate was proven to have great potential in rapidly detecting BPA in food.Keywords:SERS;metal-organic frameworks;bisphenol A;rapid detection
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Nano Energy
·
2022
·
IF 19.069
Junyu Chen,Li Song,Fangwei Qi,Siyu Qin,Xiangjun Yang,Wenjia Xie,Kuo Gai,Ying Han,Xin Zhang,Zhou Zhu,He Cai,Xibo Pei,Qianbing Wan,Ning Chen,Jian Wang,Qi Wang,Yijun Li
Piezoelectric biomaterials are advantageous in terms of easy generation of transduced bioelectrical signals to skeleton systems in response to body movements or external stimulations . In the bone formation process, the coupling of angiogenesis-osteogenesis is crucial but the effect of piezoelectric biomaterials on angiogenesis and mechanism of stress-transformed electrical signals affecting vascular cells remain elusive. In this work, hierarchically architected polyvinylidene fluoride (PVDF) foam fabricated by solid-state shearing milling was further decorated with ZIF-8 nanocrystals . The unique hierarchical porous structure realizes stable voltage outputs up to 10 V without polarization. The electric potential of piezoelectric PVDF affected molecular trajectory of Zn 2+ released from ZIF-8, leading to Zn 2+ enrichment around the PVDF surface. Under piezoelectric condition, PVDF/ZIF-8 foams promoted in-vitro angiogenic and osteogenic activity as well as antibacterial effect. Upon calvarium and femur defect repair, PVDF/ZIF-8 piezoelectric foams also guided vascularized bone regeneration through micro-current stimulation and Zn 2+ enrichment. RNA-seq demonstrated PVDF/ZIF-8 piezoelectric foam mainly up-regulated ATP coupled cation transmembrane transportation in vascular endothelial cells, which enhanced cellular uptake of Zn 2+ , indicating the synergistic effect of piezoelectric PVDF and bioactive ZIF-8. This work offers a preliminary explanation for mechanism of angiogenesis-osteogenesis coupling of PVDF/ZIF-8 foam nanogenerator and provides a valuable complement to clinical treatment strategies for bone defect repair.
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INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Guangyu Wu,Chengwei Zhou,Haoxin Li,Siye Xia,Yongli Zhu,Jiangang Han,Weinan Xing
Design and fabrication of outstanding adsorbents for treating organic pollutants in wastewater following green chemistry principles remain huge challenging. In this paper, a biomass cellulose aerogel@ZIF-8 (CA@ZIF-8) based on bamboo leaves cellulose aerogel (CA) was controllable synthesized and used for the removal of methylene blue (MB) from aqueous solution. CA was prepared from bamboo leaves by NaOH/ urea low temperature dissolution method and freeze-drying method, and then ZIF-8 was grown in situ on its surface, successfully preparing CA@ZIF-8 composite with three-dimensional porous structure. The tests of X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the structures of materials, and the related results showed that arsenic was successfully adsorbed by the prepared CA@ZIF-8. The influences of pH (2−12), contact time (5–180 min), temperature (298 K, 308 K, 318 K) and other factors on MB adsorption quantity were studied in the adsorption experiments, and the maximum adsorption capacity was about 90.18 mg/g at 298 K. The adsorption thermodynamics showed that the adsorption process of CA@ZIF-8 to MB was spontaneous and decreased with the increase of temperature. The possible adsorption mechanism was also suggested. The CA@ZIF-8 exhibited good reusability that the removal of MB remained above 77.25 % after 5 cycles. The above results show that CA@ZIF-8 is a economically and proficient suitable material for removing MB from wastewater.
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2023
·
IF 5.8
Jidong Wang,Yating Zhang,Min Dong,Zhaopeng Liu,Binbin Guo,Haipeng Zhang,Liming Gao
Detecting and analyzing circulating tumor cells(CTCs) is significant for early diagnosis, management, and personalized treatment of tumors. Herein, a smart magnetic aptamer modified Fe 3 O 4 @ZIF-8 core/shell structured nanoparticle (NPs) was successfully constructed using for capture and simultaneous pH- and NIR-irradiation responsive release of CTCs. Taking MCF-7 as model CTCs, it could be captured ca. 60 % in low-concentration artificial blood by aptamer (SYL3C) on the surface of Fe 3 O 4 @ZIF-8 NPs. After magnetic separation, the ZIF-8 shell in aptamer-modified Fe 3 O 4 @ZIF-8 NPs carrying captured CTCs would disintegrate within 20 min under the synergistic effect of an acidic environment (pH=6.0) and NIR irradiation leading to the release of CTCs with high cell viability , which was benefited for the subsequent culture and analysis. This magnetic and core/shell structured device integrated high-efficiency capture, quick isolation and perfect release into one system, which showed great potential s for the detection of CTCs in the clinic.
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