JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yue Hu,Lijiu Cao,Yunpeng Gong,Xu Ma,Yufang Chen,Tao Jin
Formaldehyde sensors represent an effective technology for real-time, online monitoring of formaldehyde concentrations. The selectivity of gas-sensitive materials for formaldehyde is a fundamental determinant of sensor performance and is crucial for the development of formaldehyde sensing technology. In this work, Sn-doped Zn-MOFs were employed to fabricate SnO 2 /ZnO micro-nano materials, and their selective response behaviors to formaldehyde were systematically explored. The results demonstrate that 5 % SnO 2 /ZnO, prepared with 5 % Sn doping, exhibits exceptional selectivity for formaldehyde. Under testing conditions of 170 °C and relative humidity below 60 %, the 5 % SnO 2 /ZnO sensor achieved a selectivity coefficient of 0.87 toward 50 ppm formaldehyde, with a response value of 72.8, response and recovery times of 81/30 s, a linear regression coefficient of 0.9997, and a minimum detection limit of 0.047 ppm. Moreover, the 5 % SnO 2 /ZnO sensor demonstrates excellent selectivity, anti-interference capability, and stability for formaldehyde detection. The enhanced formaldehyde selectivity is attributed to the high specific surface area, abundant pore structure, abundant oxygen vacancies, and n–n heterojunctions present in the 5 % SnO 2 /ZnO composite.
研究领域:
材料科学
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化学传感器
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纳米技术
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环境监测
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气体检测
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DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 415
·期 5
·855-865
·
IF 4.478
Lai Haohong,Niu Yuanyuan,Ming Pingtao,Wang Jinhao,Wang Shumei,Xu Yan,Zhai Haiyun
In this paper, a novel electrochemical sensor was constructed for the detection of purine bases. Ultrafine carbide nanocrystals confined within porous nitrogen-doped carbon dodecahedrons (PNCD) were synthesized by adding molybdate to ZIF-8 followed by annealing. With MoC-based PNCDs (MC-PNCDs) as the carrier, gold nanoparticles (AuNPs) were deposited on the electrode surface via potentiostatic deposition as the promoter of electron transfer, forming a AuNPs/MC-PNCDs/activated glassy carbon electrode (AGCE) sensor. MC-PNCDs had a large specific surface area, which combined with the excellent electrocatalytic activity of AuNPs, synergistically improved the electrocatalytic activity. The morphology and structure of the electrode surface modifier were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray photoelectron spectroscopy, infrared spectroscopy, X-ray diffraction, nitrogen adsorption–desorption analysis, and electrochemical characterization. Under the optimal conditions, the linear detection range of guanine (G) and adenine (A) was 0.5–160.0 μM, and the detection limits (S/N=3) were 72.1 and 69.6 nM, respectively. AuNPs/MC-PNCDs/AGCE was successfully constructed, and was used to simultaneously detect G and A with high sensitivity and selectivity. Moreover, the sensor was successfully used to detect G and A in herring sperm DNA samples. Graphical abstract
研究领域:
分析化学
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电化学
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纳米技术
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材料科学
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生物传感器
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生物分析化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Haiqiang Ma,Bo Yin,Tong Ye,Ishioma Laurene Egun,Yafei Li,Xianglan Zhang,Haiyong He
Hard carbon rich in closed pores is considered a highly promising anode candidate for advanced sodium-ion batteries (SIBs). Nevertheless, the precise regulation of closed pore structures is significantly impeded by the structural complexity of hard carbon. In this study, a hard carbon with tunable closed-pore architecture was constructed by using ZIF-8-derived porous carbon with uniform pore size (~0.8 nm) and adjustable pore structure as the substrate. Carbonization temperature control and a chemical vapor deposition (CVD)-based pore-sealing strategy were combined to tailor the pore structure and optimize sodium storage performance. The results revealed that the size and number of closed pores are determined by the open-pore characteristics of the carbon substrate; specifically, substrates with larger micropores and higher specific surface areas promote the development of a greater number of closed pores of larger diameters. Benefiting from the optimized closed-pore architecture, the sample ZCHC-1200 exhibits outstanding electrochemical performance, delivering a high reversible capacity of 436.5 mAh g −1 , with a plateau capacity of 265 mAh g −1 . At a high current density of 2C, it provides 236.8 mAh g −1 and retains 86.5 % of its capacity after 100 cycles. In situ Raman and ex situ X-ray photoelectron spectroscopy (XPS) analyses revealed that the predominant contributor to the elevated plateau capacity is Na + filling within closed pores. This study offers a novel strategy for designing closed pores through open-pore modulation, shedding light on the development of next-generation hard carbon anodes for SIBs.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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产品关联
DOI
PubMed
高影响因子
Food Packaging and Shelf Life
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2025
·
IF 10.6
Huixuan Zhang,Xue Yang,Yingying Zhang,E. Zhao,Haimiao Tian,Keshan Wang,Ning Ji,Yuanyuan Liu,Rui Wang
The growing consumer demand for fresh fruit accelerates the advancement of fruit preservation packaging technology. Functional packaging materials, incorporating natural active substances and nanomaterials, offered a foundation for effective preservation. While traditional nanomaterials, predominantly solid in nature, failed to provide adequate channels for material exchange necessary to meet the respiratory requirements of fruits. In this study, porous metal-organic framework zeolitic imidazolate framework-8 (ZIF-8) was synthesized and combined with tannic acid to construct respiratory channels, which were subsequently incorporated into chitosan/gelatin/polyvinyl alcohol composite films. The results demonstrated that ZIF-8@tannin strengthened the cross-linked network structure of the polymer, thereby enhancing the biocompatibility, thermal stability, mechanical strength, and barrier properties of the composite film. Simultaneously, the porous structure provided respiratory pathways that effectively regulated the respiration intensity of preserved blueberries. Notably, the CTZ100 film (100 mg ZIF-8, 20 mg tannin) exhibited optimal overall performance, successfully inhibiting microbial spoilage, weight loss, hardness reduction, and moisture migration during storage. This approach offered valuable insights for developing biodegradable active packaging with antioxidant capabilities and enhanced respiratory support, addressing quality and safety challenges in fruit preservation.
研究领域:
食品科学与技术
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包装工程
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材料科学
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采后生理学
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纳米材料
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产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Fangcheng Hu,Xingyuan Liu,Chunping Chen,Yushan Liu,Xiaotong Xu,Lin Han,Caian He,Min Wang
The clinical translation of urolithin A (UA), an ellagitannin-derived metabolite with antioxidant and mitophagy-inducing properties, is hampered by its poor solubility, limited stability, and low oral bioavailability. To address these limitations, we developed a core-shell nanoplatform (UA@ZIF-8@CMG) comprising a ZIF-8 core for efficient encapsulation and a carboxymethyl β-glucan (CMG) shell for enhanced stability and potential targeting. The optimized formulation exhibited a high drug-loading capacity (12.65 %), markedly improved UA stability, and demonstrated pH-responsive release, with minimal leakage (22 %) under simulated gastric conditions followed by sustained release in the intestinal environment. In vitro studies revealed reduced cytotoxicity and a dual cellular uptake mechanism, involving putative Dectin-1-mediated endocytosis in macrophages and nonspecific uptake in intestinal cells. This uptake profile resulted in superior preservation of mitochondrial membrane potential and more effective ROS scavenging compared with free UA. The key innovation of this system lies in the synergistic ZIF-8@CMG architecture, which integrates robust protection, controlled release, and cell-type-specific uptake, thereby distinguishing it from previously reported delivery platforms. Collectively, this work presents a translatable strategy to enhance UA bioavailability and therapeutic performance, underscoring its promise for both nutraceutical and pharmaceutical applications.
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Xiao Yang,Jian Chen,Hui Liu,Xiufang Li,Shian Zhong
Novel molecularly imprinted polymers (MIPs) based on zeolite imidazolate framework-8 (ZIF-8) stabilized Pickering emulsions polymerization were successfully prepared for the selective identification and separation of 2,4-dichlorophenoxyacetic acid (2,4-D) in aqueous solutions. Experimentally, ZIF-8 of particle size of about 100 nm was successfully synthesized, which can be used as a stabilizer in Pickering emulsion. And then, with 2,4-D as the template monomer, 4-vinylpyridine (4-VP) as the functional monomer, the hollow spherical polymer microspheres were formed via Pickering emulsions polymerization . At last, after the removal of ZIF-8 and template, MIPs were obtained, which were characterized by Fourier transmission infrared (FT-IR) spectrometry and scanning electron microscopy (SEM). Through experiments, the results showed that the adsorption capacity of MIPs and NIPs had a good correlation with Langmuir isothermal model and the kinetic adsorption of MIPs was well suitable for the pseudo-second order kinetic model. The maximum adsorption capacity of MIPs was 108.10 mg/g, while that of NIPs was 28.22 mg/g. The imprinting factor (IF) was about 3.83. And the optimal adsorption equilibrium time was 60 min. The selective and regeneration adsorption experiments showed that MIPs had a high specific selectivity and stability. Also, MIPs revealed good selectivity for 2,4-D in complex water samples. On the basis, it could be proved that ZIF-8 is an excellent alternate for the traditional stabilizers and sacrificial materials, providing a new idea for separation and analysis of harmful substances in water environment.
研究领域:
环境科学
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材料科学
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化学工程
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分析化学
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Wenjing Li,Jinsheng Li,Youze Zeng,Dong Pan,Rina Sa,Xue Wang,Meiling Xiao,Zhe Wang,Jianbing Zhu
This study focused on enhancing the performance of anion exchange membranes (AEMs) in water electrolysis applications. Anion exchange membrane water electrolysis (AEMWE) is a crucial technology for hydrogen production, but its performance is largely determined by the key materials of the AEMs. We developed a new filler and incorporated it into poly(terphenyl piperidinium) (PTP) to address the key challenges in AEM properties, such as ion conductivity and long-term stability. The resultant composite membranes exhibited improved ionic conductivity (128.8 mS cm–1, 80 °C), enhanced resistance to swelling (<8%), and excellent alkaline stability (more than 2160 h, 60 °C in 1 M KOH). Additionally, surface modification of the filler enhanced its compatibility with the polymer matrix, thereby preventing the filler from compromising the mechanical properties of the AEMs and promoting long-term stability. Notably, the AEMWE achieved a high water electrolysis performance (2.3 A cm–2 at 2 V, 80 °C) and remarkable durability (1300 h at 0.5 A cm–2, 60 °C). Overall, this research presented a promising strategy for AEM design and applications in hydrogen production through water electrolysis.
研究领域:
材料科学
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能源工程
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电化学
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氢能
·
高分子化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xiaoqi Cheng,Duoxin Zhang,Jun Li,Rongmin Wang,Yufeng He,Yaping Zhang,Pengfei Song
With the accelerating green transformation of agriculture, the development of environmentally friendly and highly efficient antimicrobial materials has emerged as a critical strategy to address challenges in agricultural development. Herein, thiazole copolymer microspheres integrated with zinc-based metal-organic framework antimicrobial materials (ZIF-8@P(TMA-MA)) were successfully synthesized via coordination polymerization of thiazole copolymers and the organic ligand 2-methylimidazole (2-MIm). The resulting ZIF-8@P(TMA-MA) composite exhibited remarkable antibacterial properties, achieving a 99.9 % inhibition rate against E. coli and S. aureus within 24 h in aqueous solution, with the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values of 0.50 mg/mL and 1.00 mg/mL, respectively. For mycorrhizal fungi , ZIF-8@P(TMA-MA) demonstrated sustained antibacterial activity over 168 h, maintaining an antimicrobial efficacy of 99.9 %. Impressively, this exceptional performance was attributed to the synergistic interaction between the five-membered thiazole heterocycles and ZIF-8. Additionally, the application of ZIF-8@P(TMA-MA) in maize growth experiments yielded promising results, highlighting its ability to enhance plant growth. This work presents an effective antibacterial platform based on PolyMOFs, demonstrating their innovative potential applications in promoting plant growth and protecting crops from microbial damage.
研究领域:
农业微生物学
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材料科学
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纳米技术
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植物生物技术
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Meiling Xu,Linchun Nie,Jiawei Liao,Dejing Meng,Wenjing Liu,Haobo Yang,Ranhao Zhao,Qingxiang Zhou
A novel and visible ratiometric fluorescence sensor based on magnesium and nitrogen co-doped carbon dots (Mg, N-CDs) encapsulated in zeolitic imidazolate framework-8 (Mg, N-CDs@ZIF-8) was designed for effective detection of oxytetracycline (OTC), employing a “turn-off/turn-on” fluorescence sensing strategy. The blue-emission Mg, N-CDs@ZIF-8 was quenched owing to fluorescence resonance energy transfer by OTC, while the green fluorescence of OTC was significantly enhanced through the interaction of Mg 2+ and Zn 2+ with OTC, enhancing the visual tracking of OTC through a distinct blue-to-green color transition. This sensor displayed a wide linearity range (0.02 − 25 μg/mL), a low detection limit (14.2 ng/mL), and a fast response time (6 min). The validity of the sensor was successfully verified by detecting OTC in milk, honey, tap water, and lake water samples. Additionally, an expandable fluorescence sensor array was constructed for the discrimination of four tetracycline antibiotics (TCs) in real samples, indicating significant application in complex environmental samples.
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DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 106
·61736-61742
·
IF 3.708
Shu-Tao Gao,Wei-Hua Liu,Ning-Zhao Shang,Cheng Feng,Qiu-Hua Wu,Zhi Wang,Chun Wang
Efficient utilization of solar energy has received tremendous attention due to the increasing environmental and energy concerns. In this paper, a plasmonic photocatalyst integrated with metal–organic framework (MOF) material, Ag/AgCl@ZIF-8, was fabricated for the first time. The unique hetero-junction structure of Ag/AgCl@ZIF-8 greatly enhanced its photocatalytic activity. Selecting RhB as a model pollutant, 98% of RhB can be degraded after 16 min under solar radiation. The relationship between the photocatalytic activity and the structure of Ag/AgCl@ZIF-8 hybrid materials was discussed and the possible reaction mechanism was proposed. The high photocatalytic activity of the hybrid material under solar radiation revealed its great application potential in directly harvesting solar energy to solve the environmental pollution issues.
研究领域:
材料科学
·
光催化
·
环境科学
·
纳米材料
·
能源化学
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DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Jianhua Luan,Xin Zhang,Wenjing Qian,Xinyu Zhang,Mengru Shu,Xiubo Zhao,Nan Wang
Chromium(VI) ions (Cr(VI)) are highly toxic heavy metal pollutants, and their rapid detection holds significant importance for environmental protection. In this study, a colorimetric detection platform was developed using a copper-based porphyrin metal–organic framework (CuTCPP) with peroxidase-like (POD) activity. 8-Hydroxyquinoline (8-HQ) was used to inhibit the color-forming reaction. Upon the addition of the target analyte, Cr(VI), the colorimetric response was restored, since Cr(VI) can preferentially form a chelate with 8-HQ. Results showed that the detection system exhibited a linear range from 50 nM to 10 μM (R2 = 0.999) with a low detection limit (LOD) of 22.3 nM, demonstrating excellent selectivity even in the presence of multiple interfering ions. The proposed intelligent response mechanism provided a visual, rapid, and user-friendly solution for on-site monitoring of Cr(VI) contamination, showing promising application potential in environmental analysis.
研究领域:
环境科学
·
分析化学
·
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Qiufen Liu,Xuelei Chen,Jiahao Wu,Liming Zhang,Guanjie He,Shouqin Tian,Xiujian Zhao
Metal–organic frameworks (MOFs) constructed by metal ions/clusters and organic linkers are used to encapsulate fluorescent guest species with aggregation-caused quenching (ACQ) effects to enhance fluorescence properties due to their porous structures and high specific surface areas. However, there would be a problem of matching between MOF pores and guest molecules’ sizes. In this paper, amorphous ZIF-8 was modified by carboxyl functional groups (H3BTC-ZIF-8) via introducing the 1,2,4-benzenetricarbonic acid (H3BTC) ligand into the ZIF-8 sol system. Moreover, H3BTC-ZIF-8 was used for the loading of organic fluorescent dyes rhodamine 6G (R6G) and coumarin 151 (C151) to prepare R6G/C151/H3BTC-ZIF-8 composite films. A white-light-emitting composite film (R6G/C151/H3BTC-ZIF-8) with CIE coordinates of (0.323, 0.347) was successfully prepared by compounding fluorescent dyes (R6G and C151) with H3BTC-modified ZIF-8, whose photoluminescence quantum yield (PLQY) can reach 64.0%. It was higher than the PLQY of the composite films prepared by crystalline ZIF-8 (40.2%) or amorphous ZIF-8 without H3BTC (48.0%) compounded with the same concentrations of dyes. The fluorescence enhancement was probably attributed to an increased amount of active sites of H3BTC-modified ZIF-8 interacting with dyes C151 and R6G. This can form hydrogen bonds between H3BTC-ZIF-8 and C151, and weak electron donor–acceptor (D–A) interactions between H3BTC-ZIF-8 and R6G molecules, respectively, thus enhancing the interactions between dyes and ZIF-8 and reducing the ACQ effect existing between dye molecules. Therefore, this strategy could provide an important guidance to develop white-light-emissive materials.
研究领域:
材料科学
·
化学
·
光电技术
✓ 已验证
DOI
高影响因子
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