JOURNAL OF CHROMATOGRAPHY A
·
2018
·
IF 3.716
Ning Zhang,Chuanhui Huang,Ping Tong,Zunmei Feng,Xiaoping Wu,Lan Zhang
Volatile polycyclic aromatic hydrocarbons (PAHs) in water and soil are associated with status in the human body. Development of simple, efficient detection method is challenging due to the coating could be attacked by the abundance of water in the direct-immersion solid-phase microextraction. The stability of coating is essential to the analysis results. In this paper, a stable Ni-Zn MOF/g-C 3 N 4 (MG NFs) nanoflowers with cavity traps structure was firstly reported and acted as solid-phase microextraction (SPME) adsorbent for PAHs. Markedly enhanced moisture and acid stability of the MG NFs was obtained through the doping the hydrophobic graphitic carbon nitride (g-C 3 N 4 ) and metal ions into metal organic frameworks (MOFs). The aperture environment and ambient environment of MG NFs were changed by the doping of the Ni and the g-C 3 N 4, respectively. The moisture and acid stability of MG NFs were prominently increased under the dual protection. Compared to commonly used commercial coatings, the MG NFs own large surface area, unique nanoflowers structure and numerous open metal sites on the nanosheets, which demonstrated significant extraction superiority for PAHs. The MG NFs coated fiber was used for the SPME preconcentration of PAHs and couped with GC–MS for detecting PAHs. It presented low detection limits (0.1–3.0 ng L −1 ), wide linearity (0.3–5000.0 ng L −1 ) and good linearity (the correlation coefficient >0.9951). The inter-day and intra-day relative standard deviation (RSD) (n = 3) for three replicate extractions using one fiber was 3.8%–9.1%, and 3.5%–9.2%, respectively. The fiber-to-fiber reproducibility (n = 3) was 4.2–11.8%. The coupling method was successfully applied in the analysis of real water and soil samples with satisfactory recoveries of 82.9–109.2%, 84.2–106.4%, and the corresponding RSDs were 2.4–11.3%, 3.6–10.8%, respectively. The results indicated the effectiveness of NG NFs coated fiber in further practical application.
研究领域:
环境科学
·
分析化学
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DOI
高影响因子
PHYSICA SCRIPTA
·
2022
·Vol. 98
·期 1
·015012
·
IF 3.081
Juncheng Zhou,Xinyue Huang,Wenlin Feng
A Michelson interferometric carbon monoxide (CO) fiber-optic sensor based on Co/Ni-MOF-74 is proposed and fabricated. The bimetallic-ion-coordination MOFs material Co/Ni-MOF-74 was prepared by solvothermal method. Through XRD and XPS characterizations, the results show that Co/Ni-MOF-74 and Ni-MOF-74 have the same crystal structure. Co/Ni-MOF-74 has a good adsorption effect on CO, and it is integrated into the optical fiber sensing structure for CO detection. In the CO concentration range of 0–35 ppm, the sensitivity and linearity are 0.022 35 dB/ppm and 0.999 36, respectively. The detection limit of the sensor is about 1.990 46 ppm. The presented fiber-optic sensor has excellent selectivity, resistance to temperature interference and good time stability, and it is expected to be applied to the detection of trace CO.
研究领域:
材料科学
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光学工程
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环境监测
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DOI
高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 14
·5159-5166
·
IF 8.262
Lijin Huang,Man He,Beibei Chen,Bin Hu
A facile preparation of magnetic MOF composites with flexible mercapto group pendants in their pores is realized through solvent-assisted ligand exchange (SALE) under mild conditions in water, and terephthalate in UIO-66 is replaced with mercaptoacetic acid (MAA). After the SALE processing, the crystallinity, porosity, and superparamagnetism of the mercapto functionalized magnetic Zr-MOF (MFC-S) are well maintained, and the obtained MFC-S exhibits a higher adsorption capacity (282 mg g−1) for Hg2+ than that of the magnetic Zr-MOF (MFC-O). Furthermore, the prepared MFC-S can be regenerated easily by liquid desorption after adsorption of metal ions and be reused more than 5 times without obvious decrease in removal performance. The proposed SALE method for the preparation of mercapto functionalized magnetic MOF composites (MFCs) is easy-to-operate and low cost, providing not only a reliable porous MFC platform for the removal of metal ions, but also a simple and efficient synthesis route for the preparation of functionalized MFCs which cannot be achieved through conventional approaches.
研究领域:
材料科学
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环境科学
·
化学工程
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DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 55
·35517-35530
·
IF 4.036
Ziguang Zheng,Xiaomei Jiang,Xiaowei Yang,Min Ma,Siping Ji,Fengzhi Jiang
The metal or metal clusters and organic ligands are relevant to the selectivity and performance of phosphate removal in MOFs, and the electron structure, chemical characteristics, and preparation method also affect efficiency and commercial promotion. However, few reports focus on the above, especially for 2D MOF nanomaterials. In this work, two 2D Ln-TDA (Ln = La, Ce) nanosheets assembled via microwave- and ultrasonic-assisted methods are employed as adsorbents for phosphate (H2PO4−, HPO42−) removal for the first time. Their microstructure and performance were characterized using XRD, TEM, SEM, AFM, FTIR, zeta potential, and DFT calculations. The prepared 2D Ln-TDA (Ln = La, Ce) nanosheets exposed more adsorption sites and effectively reduced the restrictions of mass transfer. Based on this, the Langmuir model was employed to estimate the maximum adsorption capacities of the two kinds of nanosheets, which reached 253.5 mg g−1 and 259.5 mg g−1, which are 553 times and 3054 times larger than those for bulk Ln-TDA (Ln = La, Ce), respectively. Additionally, the kinetic data showed that the adsorption equilibrium time is fast, approximately 15 min by the pseudo-second-order model. In addition, the prepared products not only have a wide application range (pH = 3–9) but also offer eco-safety in terms of residuals (no Ln leak out). Based on the XPS spectra, FTIR spectra and DFT calculations, the main adsorption mechanisms included ligand exchange and electrostatic interactions. This new insight provides a novel strategy to prepare 2D MOF adsorbents, achieving a more eco-friendly method (microwave- and ultrasonic-assisted synthesis) for preparing 2D Ln-based MOF nanosheets by coordinative unsaturation to boost phosphate adsorption.
研究领域:
材料科学
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环境科学
·
化学
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DOI
PubMed
高影响因子
Materials Futures
·
2025
·Vol. 4
·期 2
·025302
·
IF 10.8
Yali Sun,Yun Li,Yang Zhou,Ting Cai,Yuxuan Chen,Chao Zou,Han Song,Shenghuang Lin,Shenghua Liu
Organic electrochemical transistors (OECTs) are regarded as a promising platform for chemical and biological sensing due to their biocompatibility, cost-effectiveness and flexibility. However, maintaining long-term stability of OECTs while achieving high sensitivity remains a challenge for their practical applications. One of the main reasons is the relatively low electronic and ionic conductivity of the channel material. Herein, we present a p-type OECT fabricated by incorporating metal–organic framework (MOF)-MoS2 hybrid nanosheets into the PEDOT:PSS channel via solution-based processes. The strategy significantly improves the sensitivity of OECT, with the transconductance of the device increasing by ∼threefold to 19.34 mS. The higher transconductance is attributed to the hybrid MOF-MoS2 dopant, which not only enhances the electronic conductivity, but also strengthens ion transport and capacitance of the PEDOT:PSS film due to the synergistic effects from high electron mobility of MoS2 and MOF porous structure with large surface area. The fabricated OECT demonstrates high selectivity and sensitivity as a glucose biosensor across a wide concentration range in saliva. Finally, we illustrate the merits of integration machine learning algorithms to construct predictive models using the extensive datasets produced by our sensors for both classification and quantification tasks. These findings highlight the great potential of OECTs incorporating MOF-MoS2 hybrid, as a promising candidate for ultra-sensitive biological detections, and broaden the applications of our OECT biosensors for non-invasive health monitoring and wearable electronics.
研究领域:
生物医学工程
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材料科学
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传感器技术
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产品关联
DOI
高影响因子
Food Packaging and Shelf Life
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2025
·
IF 10.6
Xiaoyu Xu,Kangqi Huang,Danfeng He,Bin Huang,Qun Tang,Heping Li,Zhiming Zou
Colorimetric ammonia-sensing smart packaging materials that enables real-time visual detection of food freshness play an important role in ensuring food safety. This work involved the construction of a novel Cu/Na-metal organic framework (CuNa-MOF) colorimetric ammonia sensing agent and its subsequent exploitation as functional reinforcing filler of potato starch (PS) substrate to boost the fabrication of high-performance smart packaging materials. Based on single crystal data analysis, a new mechanism of crystal-to-crystal phase transformation was proposed for the colorimetric ammonia-sensing action of CuNa-MOF. This new mechanism involved only minor changes in CuNa-MOF crystal structure (with the coordinated water replaced by ammonia), indicating its unique structural integrity and stability, thus contributing to superior ammonia sensing ability. The results also demonstrated that the introduction of CuNa-MOF (2–6 wt%) within PS substrate resulted in the formation of compatible and tight nanocomposite films. When the content of CuNa-MOF increased from 0 to 6 wt%, the tensile strength, water vapor barrier, and oxygen barrier capability was respectively increased by 11.6 %, 16.4 %, and 18.2 %, and the UV-shielding efficacy was increased from 36.8 % to 96.1 %. Furthermore, the fabricated PS/CuNa-MOF film presented good biocompatibility and long-term colour stability, while combining remarkable colour-changing ammonia sensing function with high antibacterial efficiency (100 %) against Escherichia coli and Staphylococcus aureus . Additionally, the PS/CuNa-MOF film allowed for real-time visual monitoring of prawn freshness decay by discernible coloration changes. This work offers a new strategy in the design of high-performance colorimetric ammonia-sensing materials for smart packaging application.
研究领域:
材料科学
·
食品安全
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 7
·2101908
·
IF 6.389
Meng Miao,Zhipeng Wang,Zhiming Guo,Jinfeng Xing
A quasi solid–liquid reaction strategy is proposed that is based on the instantaneous transformation of structured solid ligand aggregation into insoluble Cu 3 (HITP) 2 metal–organic framework (MOF) aggregation without morphologic change (HITP = 2,3,6,7,10,11-hexaiminotriphenylene). The initial 3D ordered submicron macropores (TOM) in ligand aggregation can be maintained during the transformation due to the extremely rapid rate of coordination reaction. In this case, the in situ synthesis of the Cu 3 (HITP) 2 MOF film with large-scale TOM structure (TOM-Cu 3 (HITP) 2 film) on ceramic-based gold interdigital electrode (IDE) is achieved. Scanning electron microscope is used to confirm the morphology in each stage of synthetic process. Spectroscopic characterizations prove that there is no essential difference between TOM-Cu 3 (HITP) 2 film and ordinary Cu 3 (HITP) 2 MOF, except for slight differences in the contents of individual surface functional group and integral crystallinities, respectively. Notably, TOM structure endows the TOM-Cu 3 (HITP) 2 film with a dramatic promotion in sensitivity to H 2 S gas. The resistive response of the IDE loaded with TOM-Cu 3 (HITP) 2 film to the 80 ppm H 2 S gas reaches 78.5 at room temperature, which is 6.7× more than that of the Cu 3 (HITP) 2 film without TOM structure. The method of obvious universality allows the authors to perform in situ synthesis directly on the desired substrate without transfer process.
研究领域:
材料科学
·
化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Sheng Zhao,Jing Xu,Min Mao,Lingjiao Li,Xuanhao Li
A dye-sensitive photocatalytic H 2 evolution reaction (HER) system with photogenerated carrier directed conduction was constructed. The protonated g-C 3 N 4 combines with the sheet-like Co MOF to form a 2D/2D heterojunction via electrostatic self-assembly. The protonated g-C 3 N 4 and 2D Co-MOF directionally adsorb Eosin Y (EY) and triethanolamine (TEOA) molecules through hydrogen bond and complexation to achieve a whole photocatalytic system. The integral structure effectively facilitates the utilization of dye sensitizer and hole sacrificial agent to achieve the effective and stable photocatalytic H 2 evolution capacity. The photocatalytic hydrogen evolution rate of g-C 3 N 4 after protonation is 1.88 times as high as that of the original g-C 3 N 4 . On the basis of 2D/2D heterojunction, Co MOF is doped with rare earth element Sm. The 4f electrons and the difference valences (Sm 3+ and Co 2+ ) further suppress the reorganization of photogenerated excitons to achieve highly efficient photocatalytic HER. The directional coupling of sensitizer and electron sacrificial agent combined with rare earth element doping makes the photocatalytic HER rate of the composite material reached 73.42 μmol . h −1 within 5 h under simulated sunlight.
研究领域:
材料科学
·
光化学
·
能源科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Zhaoxiang Zeng,Lihua Huang,Caiyan Xu,Siqi Rao,Yin Chen,Wenjin Xu,Hao Hong
Metal-organic frameworks (MOFs) are a unique type of coordination polymer characterized by their high porosity and enormous specific surface area, which enable their use as carriers. We have constructed a novel MOFs-based nanodelivery system designed for multimodal combination therapy to enhance the delivery efficiency and efficacy of chemotherapeutic drugs. The synthesis of MOF-199, which inherently possesses a drug-release response function, was used as a nanodrug carrier. Doxorubicin (DOX) was encapsulated through physical adsorption, and the carrier surface was modified with a biomimetic material, polydopamine (PDA). Both PDA and hyaluronic acid (HA) molecules contain carboxyl groups, which can be connected through Fe3+-mediated coordination interactions. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) were used to test the size, dispersity, and structural characteristics of the synthesized products, confirming their appropriate size and dispersity. BET(BET surface area) and TGA test results indicated that the nanocarrier exhibits good stability, a large specific surface area, and high porosity, making it suitable for use as a drug carrier. Ultraviolet spectrophotometry confirmed that the nanocarrier MOF-199-PDA-HA has the ability to consume GSH, with the drug loading rate and encapsulation efficiency of DOX in the system were measured as 39.58% and 73.26%, respectively. In cellular experiments, the DOX@MOF-199-PDA-HA group produced toxic hydroxyl radicals following H2O2 addition. After near-infrared light irradiation, both cellular toxicity and reactive oxygen species fluorescence intensity increased, indicating further enhanced anticancer efficacy. Using free HA as a control, it was confirmed that HA enhances tumor-specific accumulation of DOX@MOF-199-PDA-HA by binding to CD44 receptors on cancer cell surfaces.DOX@MOF-199-PDA-HA is a pH/GSH/NIR-responsive nanodelivery system with targeting functionality. This system ensures that drugs are released with higher efficiency in the tumor microenvironment through pH and glutathione (GSH) responsive drug-release mechanisms, thereby reducing toxicity to healthy tissues
研究领域:
药剂学
·
纳米医学
·
肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Shuang Ni,Li Xu,Xi-Ting Zhang,Shao-Min Wang,Qing-Yuan Yang
Efficient and economical capture and separation of sulfur hexafluoride (SF6) are critical for emissions mitigation and industrial reuse. Conventional distillation methods remain energy-intensive, prompting the need for cost-effective alternatives. Here, MOF-303, constructed from earth-abundant aluminum and low-cost linkers, features optimally sized pores (8.3 Å) that selectively adsorb SF6 (5.5 Å) over N2 (3.6 Å). This rational pore engineering enables MOF-303 to achieve benchmark SF6 capture (1.91 mmol g–1 at P < 0.1 bar) with exceptional selectivity (148), while its low regeneration energy (22.9 kJ mol–1) ensures practical cycling. Breakthrough experiments confirm robust performance under dynamic conditions. Computational studies reveal how pore geometry enables size-exclusive recognition. Compared to noble-metal adsorbents, MOF-303’s earth-abundant components reduce costs by >70%, offering a sustainable solution for industrial SF6 recovery.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Yifei Luo,Guohe Huang,Yongping Li,Jing Huang,Yao Yao,Peng Zhang,Zixin Zhang,Jian Shen,Jianan Yin,Xiujuan Chen,Yuwei Wu,Mengna Li,Kai Zhao,Sichen Gao,Chun Zhang
Ensuring the safe removal of fluoride from drinking water poses a significant challenge in numerous remote communities affected by fluoride contamination. Therefore, this study focuses on the in-situ growth of MOF—AlFu on ceramic filters (CFs), thereby synthesizing in-situ MOF-modified ceramic filters (IMCFs) for effective fluoride removal from drinking water in such communities. Initially, we conducted response surface optimization of the IMCF preparation process, followed by comprehensive characterization. Based on SEM, XRD, and FTIR analyses, it is confirmed that AlFu successfully grows on the surfaces and within the pores of CFs, forming layered structures that enhance the effective adsorption of fluoride on IMCFs. Besides, zeta potential and FTIR results indicated that electrostatic adsorption, ion exchange and hydrogen bonding are the primary mechanisms of fluoride adsorption on IMCFs, which is also confirmed by the adsorption kinetics. The results of adsorption isotherms show that the maximum adsorption of IMCFs is 9.51 mg/g. Within the pH range of 4–10, IMCFs reduced the fluoride concentration from 10 mg/L to below 1.2 mg/L. Furthermore, the IMCF retains over 75 % of its adsorption capacity after undergoing five use cycles, exhibiting remarkable durability during the multiple cycling filtration process. This study suggests that the developed IMCF can serve as a safe and effective defluoridation technology for purifying drinking water in remote communities.
研究领域:
环境科学
·
材料科学
·
水处理技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Huajing Wang,Li Zeng,Xiao Wu,Baisheng Sa,Hanxin Chen,Rui Xiong,Dawen Zeng
The long-term stability of the metal-organic frameworks (MOFs) gas sensors is of great value in advancing their practical applications under complex environmental conditions (high humidity, high temperature, etc.). However, long-term stable and accurate gas detection by MOF sensors in an energy-efficient state remains a formidable challenge. In this work, the vanadium-based MOF MIL-47(V) is reported as a novel and efficient NO 2 sensing material, which exhibits intense response and trace detection with outstanding stability at room temperature (RT, 25 °C). The high specific surface area and abundant hollow channels of MIL-47(V) provide numerous active sites for the adsorption of NO 2 molecules. The high chemical stability and hydrophobicity enable the MIL-47(V) sensor to maintain long-term stability in the face of environmental disturbances. Furthermore, theoretical calculations validate the high reactivity of the V atoms and the hollow channels in MIL-47(V). The V sites demonstrate a strong adsorption energy of −0.87 eV to NO 2 , which enhances the interaction between the MIL-47(V) and NO 2 . The MIL-47(V) sensor shows outstanding NO 2 sensing properties at RT, with high sensitivity (response ≈ 2.89–10 ppm NO 2 ), trace detection limit (15 ppb), excellent long-term stability (response ≈ 2.11–3 ppm NO 2 , eight weeks) and good humidity resistance (response ≈ 1.21–1.14 to 0 %-80 % relative humidity, 100 ppb NO 2 ), which makes it remarkably attractive for ultrasensitive, accurate and reliable NO 2 detection at RT.
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DOI
高影响因子
危险品化学品经营许可证（带存储）