IEEE SENSORS JOURNAL
·
2025
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IF 4.5
Ziheng Zhi,Fangrong Hu,An Su,Mingzhu Jiang,Wenying Jiang,Longhui Zhang,Zhongpeng Gao,Weiyu Luo,Chengju Meng
P-Xylene is a prevalent indoor hazardous volatile organic compound(VOC). A long-term exposure limit of 100 ppm for p-xylene is generally recommended. Therefore, sensitive and selective detection of trace p-xylene is crucial. This work presents a method for detecting p-xylene gas by combining terahertz (THz) metasurface sensor with a metal-organic-framework (MOF) material, copper benzene-1,3,5-tricarboxylate (HKUST-1). The sensor with double split ring resonators is fabricated using a micromachining process and characterized by a terahertz time-domain-spectroscopy (TDS) system. The test results are consistent with the simulation. Subsequently, the sensor's surface is modified using the MOF material of HKUST-1 to enhance its sensitivity to the p-xylene gas. At room temperature, the sensitivity for p-xylene gas concentrations is between 1-100 ppm .The modified sensor has a maximum response frequency shift of 14 GHz for p-xylene gas at 100 ppm. Furthermore, the specificity, repeatability and stability of the sensor are characterized. The proposed method for highly sensitive and specific detection of p-xylene gas has important reference significance for the development of other types of gas sensors.
研究领域:
化学
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材料科学
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传感技术
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产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
·
2023
·
IF 1.8
Kai Sun,Xinbao Li,Ye Yuan,Yucheng Wang,Ying Chen,Yingying Zhu,Junliang Lu
Adsorption of volatile gasoline components at oil terminal by using metal organic frameworks (MOFs) is a prospective technology in reducing environment pollution and increasing oil resource recovery. In this study, a typical MOF of HKUST-1 was facile prepared by solvothermal method and tested in the adsorption of volatile gasoline components. Isobutylene was selected as a model compound. The effects of preparation parameters Cu 2+ /H 3 BTC molar ratios, Cu 2+ precursors, and solvent compositions on the structure of HKUST-1 and its subsequent adsorption performance were systematically studied. The synthesized samples were characterized by XRD, SEM, and N 2 physisorption. It was found that the HKUST-1 prepared by using DMF as the unique solvent obtained the highest specific surface area (1076.7 m 2 /g) and the largest pore volume (0.90 cm 3 /g). Furthermore, the maximum isobutylene adsorption capacity of 31.9 mg/g was found on the HKUST-1 which prepared under the conditions of Cu 2+ /H 3 BTC = 2, Cu (CH 3 COO) 2 as the Cu 2+ precursor, and a solvent composition of DMF:EtOH:H 2 O = 0:4:3.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·127515
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IF 4.386
Wenrui Zhao,Beibei Wang,Xueping Ji,Kai Kang,Bing Wang,Lin Wang,Jujie Ren
Herein, a novel electrochemiluminescence (ECL) sensor was developed using a dual signal amplification mechanism based on a typical HKUST-1 metal-organic framework, [Cu3(BTC)2(H2O)3, BTC=1,3,5-benzene tricarboxylate], CdS quantum dots (QDs) and multi-walled carbon nanotubes (MWCNTs) for ultrasensitive determination of catechol. HKUST-1 not only has a dispersion effect to carry more CdS QDs for enhancing stability, but also acts as effective catalyzer to accelerate the transformation of persulfate ion (S2O82−) for generating more sulfate radical anions (SO4•−), therefore amplifying the signal of the ECL sensor. Meanwhile, the introduction of MWCNTs to the ECL process could promote the electron transfer rate and accelerate the kinetics of the electro-catalytic reaction attributing to its stronger conductivity, achieving dual-amplifying effect, which could obviously increase the sensitivity of the ECL sensor. The proposed sensor displayed a wide linear range of 1 × 10−7 − 1 × 10−3 M and a low detection limit of 3.8 × 10−8 M with excellent stability, high repeatability and outstanding anti-interference ability under the optimal conditions. Impressively, the sensor possessed commendable feedback when detecting catechol in real samples. Therefore, this research provided a new strategy combining the advantages of MOFs, QDs and MWCNTs materials for phenolic pollutants detection.
研究领域:
分析化学
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环境科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
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IF 9.136
Haike Li,Lijinhong Huang,Xindong Li,Wanfu Huang,Lang Li,Wenhao Li,Meng Cai,Zhaohuang Zhong
This study aimed to further enhance the solvent stability and flux of organic solvent-resistant nanofiltration (OSN) membranes. Based on hexane diamine cross-linked polyetherimide (PEI) ultrafiltration membranes, in-situ calcium alginate (CaAlg) hydrogel doped with HKUST-1 was constructed as an interlayer, and then the OSN membrane with an integral covalent bond structure was constructed from interfacial polymerization reaction and N N dimethylformamide (DMF) activation. The membrane showed ultra-thinness (polyamide (PA) layer thickness reduced from 97 to 11 nm), large surface area (surface roughness increased from 75.6 to 113 nm), high hydrophilicity (water contact angle reduced from 60.1° to 54.45°), and negative charge. The CaAlg-HKUST-1 interlayer limited the piperazine diffusion rate by hydrogen bonding and covalent bonding, etc., reduced the thickness of the PA layer, and linked the base membrane and the PA layer by its internal integral covalent bonding, which effectively enhanced the structural stability of the OSN membrane. The PA/CaAlg-HKUST-1 6 /PEI membrane achieved a flux of 29.4 L·m −2 ·h −1 in ethanol and a rejection of 94.7 % in 0.1 g·L -1 methyl blue. Different dye rejection tests, solvent flux tests, DMF and acetone immersion tests, fouling resistance tests, and continuous operation tests show PA/CaAlg-HKUST-1 6 /PEI membrane has better solvent resistance, dye separation performance, and stable membrane flux. Hence, it has great application prospects in the fields of organic solvents and other types of wastewater treatment.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Ge Yang,Yanjiao Wang,Mengling Sun,Panpan Xu,Chunzheng Wang,Ke Huang,Heqing Jiang,Svetlana Mintova,Hailing Guo
The amino-modification of the filler material is one of the most common strategies for optimization of the performance of mixed matrix membranes, aiming to enhance the interactions between the filler and the organic matrix and accelerate the adsorption of gas molecules by the filler. Herein, we found that the in-situ introduction of amino groups into the HKUST-1 filler would have negative effects on the gas separation performance of the MMMs following the “diffusion-adsorption coupling control” mechanism, which suggests that using MOFs fillers with large aperture size to accelerate the diffusion of small H 2 molecules and slow the diffusion of polar CO 2 molecules through the adsorption-desorption process. The NH 2 -HKUST-1 filler caused the blockage and loss of the pore structure , and the interfacial interactions in the PEI-based mixed matrix membranes were not improved. Therefore, the in-situ synthesized NH 2 -HKUST-1 did not support H 2 /CO 2 separation. This work further investigates the possible “diffusion-adsorption coupling control” mechanism of fillers with large aperture size and contributes to the development of MMMs materials.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
IRANIAN POLYMER JOURNAL
·
2023
·Vol. 32
·期 10
·1229-1240
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IF 3.1
Song Lixin,Zhang Jian,Zhang Xing,Rui Chaofan,Zhang Yunxia,Wang Mingyu,He Juan
The surface imprinting polymers (HKUST-1 @ MIPs) were synthesized by molecular imprinting technology. Using the metal–organic framework (HKUST-1) as the carrier, 4-methylumbelliferyl acetate as alternative templates for aflatoxins, and molecularly imprinted polymers polymerized on the surface of HKUST-1. The adsorption capacity (6.0 μg·mg −1 ) and adsorption rate (adsorption equilibrium reached within 5 min) of HKUST-1 @ MIPs for aflatoxins were studied. HKUST-1 @ MIPs were used as adsorbents to prepare surface-imprinted solid-phase extraction columns (HKUST-1 @ MIPs SPE columns). The extraction conditions of HKUST-1 @ MIPs SPE columns were optimized, and the reliability of the method was verified by HPLC–FD technique. Water was chosen as the wash solution and methanol as the eluent with an elution volume of 2 mL. The linear range of the method was 0.5–20 μg·kg −1 with R 2 = 0.9991–0.9996. The detection limits of aflatoxins (G2, G1, B2, and B1) were 0.05, 0.02, 0.03, and 0.05 μg·kg −1 , respectively. The limits of quantification were 0.2, 0.1, 0.15, and 0.3 μg·kg −1 , accordingly. The spiked recovery of aflatoxins (G2, G1, B2, and B1) was 92.5%-118.4%, and the relative standard deviation was 3.14%-6.03%. It had been verified that the self-made solid-phase extraction column had high stability and reusability and could be used for at least six times. Comparing the HKUST-1 @ MIPs SPE and immunoprophylactic columns, a low-cost, easy-to-operate, and sensitive method was developed for detecting trace aflatoxins in food by combining with HPLC–FD technique. Graphical abstract
In this work, dissolve BTC and Cu (NO3)2·3H2O completely and stir magnetically, heat to 120 °C for 12 hours. After washing with solvent, the purple solid HKUST-1 was obtained by centrifugation and drying
研究领域:
食品安全
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分析化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
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IF 4.6
Huiping Wu,Hui Sun,Bin Yu,Afang Gao,Gaoyuan Chen,Xinyu Liu,Shijie Wang,Yutong Feng
Recently, the rapid growth of the textile, printing, and dyeing industries has led to severe pollution from dye wastewater. Bimetallic metal-organic frameworks (bimetallic MOFs) have emerged as promising adsorbents for dyes removal. Herein, Fe-HKUST-1 with an octahedral structure was anchored on the surface of viscose spunlaced nonwoven material (VSN) via an in situ solvothermal method to prepare Fe-HKUST-1@VSN. After carbonization, Fe-HKUST-1@VSNC was obtained for the adsorption of organic dyes in water. When the carbonization temperature is no more than 240 ο C, the morphologies and structures of Fe-HKUST-1@VSNC are not changed. And the adsorption efficiencies and capacities of Fe-HKUST-1@VSNC-240 for Congo red (CR) and crystal violet (CV) are the optimal. At an initial dye concentration of 10 mg L −1 , a temperature of 35 °C, and pH 7, Fe-HKUST-1@VSNC-240 shows its highest performance, reaching 98.17 % removal of CV in 90 min and 98.65 % removal of CR in 120 min. The adsorption processes of Fe-HKUST-1@VSNC-240 for both CV and CR are slightly affected by coexisting ions. The adsorption efficiency of Fe-HKUST-1@VSNC-240 for CV and CR declines to 50.10 % (after 6 cycles) and 56.76 % (after 22 cycles), respectively. Moreover, Fe-HKUST-1@VSNC-240 also demonstrates good adsorption performance in real water environment. The adsorption processes of Fe-HKUST-1@VSNC-240 for both CV and CR are endothermic, spontaneous, and monolayer adsorption, primarily through chemical adsorption and intra-particle diffusion. The synthesized Fe-HKUST-1@VSNC-240 can adsorb various organic dyes, along with excellent structural stability and recyclability, offering a promising solution for dye-contaminated wastewater remediation.
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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纳米技术
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污染治理
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2021
·
IF 5.455
Rong Pan,Yining Tang,Yanni Guo,Jun Shang,Lei Zhou,Wei Dong,Deliang He
To develop effective SO 2 adsorbents, HKUST-1 and HKUST-1 @ GO were synthesized by hydrothermal and room-temperature methods, and characterized by SEM, BET, XRD , TG and FTIR. The preparation method of the adsorbent, amount of adsorbent, initial concentration of SO 2 , and the influence of time and temperature on the adsorption of SO 2 by HKUST-1 and HKUST-1@GO were studied. The results showed that the hydrothermally synthesized HKUST-1@1.2%GO was the best adsorbent for SO 2 , the SO 2 concentration did not affect the final adsorption efficiency, the best adsorption time was 20 min, and the best adsorbent dose was 200 mg. The kinetics and isotherms of HKUST-1@1.2%GO were studied, and the thermodynamic parameters were calculated. The static SO 2 adsorption of HKUST-1@1.2%GO conformed to the pseudo-first-order model and Freundlich model, and was a spontaneous exothermic process. Lowering the temperature is beneficial to the adsorption. At 288 K, the maximum theoretical SO 2 adsorption capacity of HKUST-1 @1.2% GO was 72.49 mmol g −1 . After five adsorption cycles, the adsorption efficiency only decreased by 0.8%, indicating that the adsorbent has excellent repeatability and cyclic stability.
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
CHEMICAL ENGINEERING JOURNAL
·
2016
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IF 5.31
Feng Xu,Ying Yu,Jian Yan,Qibin Xia,Haihui Wang,Jing Li,Zhong Li
An ultrafast synthesis method is developed for the preparation of composites of graphite oxide and HKUST-1, GrO@HKUST-1. Fast synthesis of GrO@HKUST-1 composites can be quickly achieved at room temperature within 1 min. The synthesized composites were characterized by XRD, SEM, N 2 adsorption, FTIR and TGA. The isotherms of CO 2 and N 2 on the as-synthesized materials were measured and the isosteric heats of CO 2 adsorption were estimated. The CO 2 /N 2 adsorption selectivities were predicted by means of ideal adsorbed solution theory (IAST). Results show that the GrO@HKUST-1 composites have higher BET surface area and pore volume than the parent HKUST-1. The CO 2 adsorption capacity of 2GrO@HKUST-1 (2% of GrO) is up to 9.02 mmol/g at 1 bar and 273 K, giving an increase of 32% in comparison of the parent HKUST-1. The isosteric heat of CO 2 adsorption on 2GrO@HKUST-1 is slightly higher than that of HKUST-1, suggesting the stronger interaction between CO 2 molecules and 2GrO@HKUST-1. The CO 2 /N 2 adsorption selectivity of 2GrO@HKUST-1 is significantly enhanced over pristine HKUST-1. At 1 bar, the CO 2 /N 2 adsorption selectivity of 2GrO@HKUST-1 is up to 186, while that of parent HKUST-1 is only 103. This rapid room temperature synthesis route is promising for new MOF-based composites.
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
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Zicheng Chen,Xiangyang He,Jing Ge,Guangyuan Fan,Lanhe Zhang,Ashak Mahmud Parvez,Guanhua Wang
Nanofibrillated cellulose (NFC) has presented great potential as supports for functional membrane materials owing to its unique advantages. In this work, NFC-supported MOF hierarchically porous membranes were synthesized by anchoring HKUST-1 (copper 1,3,5-benzenetricarboxylate open-framework) on NFC membrane through a green DMF-free (N,N-Dimethylformamide) method at room temperature and afterward, the as-prepared composite membrane was used to remove formaldehyde from the air. The addition of HKUST-1 particles significantly increased the specific surface area of NFC membrane without affecting the NFC properties. Meanwhile, the nucleation and growth process of HKUST-1 on the NFC membrane could be effectively regulated, which further controlled the morphology of HKUST-1 as well as the anchored position of HKUST-1. When HKUST-1 was anchored on the interior and surface of the membrane, HKUST-1 reduced the compactness of the arrangement between fibers, which resulted in a hierarchical porous structure and then exposed more active adsorption sites of HKUST-1 particles. Thus, the flexible composite membranes exhibited effective formaldehyde adsorption from a low formaldehyde concentration environment (3.0 mg/m 3 ). Under the optimum conditions, the maximum adsorption capacity of the HKUST-1@NFC-1 for formaldehyde reached 378.09 mg/g (based on HKUST-1 wt), which was considerably higher than support-free HKUST-1 powders. Consequently, the present work offers a green and controllable route to prepare NFC-supported MOF composite membranes with highly effective formaldehyde adsorption capacity and thus provides a promising option for NFC application as a flexible adsorbent support.
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
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 5
·1-8
·
IF 6.232
Lin Yanna,Sun Yuanling,Dai Yuxue,Zhu Xiaodong,Liu Hao,Han Rui,Gao Dandan,Luo Chuannan,Wang Xueying
Lysozyme aptamer-functionalized magnetic alginate hydrogel was prepared for separation and enrichment of lysozyme. Luminol-labeled aptamer was used as a signal tag, and the signal tag was adsorbed on magnetic carboxylated carbon nanotubes based on the π-interaction. When lysozyme was added, the aptamer specifically binds to the lysozyme, causing the signal tag to detach from the magnetic carboxylated carbon nanotubes. When the aptamer/lysozyme complex bound to the complementary single strand of aptamer on the hemin@HKUST-1, lysozyme was released. The released lysozyme can be recombined with the signal tag adsorbed on the magnetic carboxylated carbon nanotube, allowing more signal tag to be dispersed into the solution. Determination of lysozyme was achieved by releasing the luminol-labeled aptamer to generate a chemiluminescence signal at a wavelength of 425 nm. It was proved by experiments that the synthesized hemin@HKUST-1 had a strong catalytic effect on the luminol-NaOH-H 2 O 2 system. The chemiluminescence signal was increased nearly 100 times. The complementary pairing allowed the luminol to be immobilized on the surface of hemin@HKUST-1. The generation and consumption of short-lived reactive oxygen species were concentrated on the surface of the MOFs, which improves the chemiluminescence efficiency. The introduction of hemin@HKUST-1 and DNA solved the defects of chemiluminescence analysis. The chemiluminescence assay was able to detect lysozyme with linear range of 1.05 × 10 −6 U∙mg −1 (6.00 × 10 −13 mol∙L −1 )–1.25 × 10 −2 U∙mg −1 (7.14 × 10 −9 mol∙L −1 ); the detection limit was 3.50 × 10 −7 U∙mg −1 (2.00 × 10 −13 mol∙L −1 ) ( R 2 = 0.99). The recovery of lysozyme in spiked saliva samples was 97.4–102.8%.
Schematic presentation of chemiluminescence assay. Lysozyme (Lys) was captured by aptamer-modified magnetic sodium alginate (M-Alg-Apt); Glycine (pH = 2) as eluent for Lys. Luminol-modified Apt (Apt-luminol) as signal tag; magnetic carbon nanotubes (MCNTs) as adsorption matrix; cDNA was complementary to Apt; hemin@HKUST-1 as catalyst.
研究领域:
生物化学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 35
·27901-27911
·
IF 3.84
Chunling Xin,Haijuan Zhan,Xin Huang,Hongguang Li,Ning Zhao,Fukui Xiao,Wei Wei,Yuhan Sun
Two type of modulators, including sodium acetate and triethylamine were used to synthesize nanosized HKUST-1 crystals with tailored size and morphology using a coordination modulation method. The results of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N2 sorption isotherms confirm that the size of the HKUST-1 crystals can be tuned from the micron scale to the nanoscale through precise modulation of the amounts of the modulators. Moreover, hierarchical porous structures are obtained with the addition of modulators. It is suggested that a moderate acid–base environment and capping groups play an important role in controlling the size and morphology of HKUST-1. Dynamic CO2 breakthrough experiments illustrate that the CO2 capacity of nanosized HKUST-1 crystals is superior to that of micron-sized HKUST-1 crystals under low CO2 partial pressure conditions (0.1 bar). Besides, the CO2 adsorption capacity of nanosized HKUST-1 crystals was maintained after ten adsorption/desorption cycles.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）