INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 9.2
Shijie Cao,Quanquan Li,Hui Yun,Boyu Zhang,Zhixue Wang,Xiaowen Wang,Jing Bai,Xiaodong Wang,Yunhua Xu
Magnesium Hydride (MgH 2 ) is a promising hydrogen storage material but suffers from a high dehydrogenation temperature and sluggish sorption kinetics, which hinder its practical application. Accordingly, we report the use of a Cu-based metal-organic framework (HKUST-1) derived carbon material as a catalyst for optimizing the MgH 2 hydrogen storage performance. The MgH 2 containing 10 wt% HKUST-1 (denoted as MgH 2 -HKUST-1) exhibits a maximum dehydrogenation temperature of 50 °C, much lower than pure MgH 2 . Additionally, it demonstrates enhanced hydrogenation dynamics: it adsorbs 6.4 wt% H 2 within 240 s when heated to 350 °C, and even at 200 °C, it still captures 5.7 wt% H 2 in 60 min. Moreover, the dehydrogenation activation energy is 85.01 kJ per mole of H 2 , showing a marked reduction compared to pure MgH 2 . Furthermore, the excellent H 2 storage performance perhaps stems from the synergistic interaction of Cu 2+ /Cu + redox reactions, mechanochemical size effects, and in situ carbon scaffolding.
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APPLIED ORGANOMETALLIC CHEMISTRY
·
2026
·Vol. 40
·期 4
·e70543
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IF 4.3
Xinhao Zhang,Qiang Wang,Haoyang Lin,Dingkai Hu,Biao Liu,Dezhi Cao,Guorong Zhao
The excessive consumption of fossil fuels has triggered a dramatic surge in CO 2 emissions, prompting the development of diverse mitigation strategies. Among these, the functionalization of metal–organic frameworks (MOFs) with polar amine moieties has emerged as a promising approach to substantially enhance their CO 2 capture capacity. In this study, HKUST-1 was synthesized via a solvothermal method and then modified with three different amines (DEA, TEPA, and PEI) by impregnation to prepare a series of solid amine adsorbents. The effects of the amine type, amine loading, and environmental parameters, including temperature, gas flow rate, CO 2 concentration, and humidity, on the CO 2 adsorption performance were systematically studied. Thermal stability, cycling performance, and adsorption kinetics were also evaluated. The results show that the PEI-modified adsorbent exhibits the best performance, with an optimal amine loading of 20%. Excessive amine loading leads to pore blockage and reduces adsorption capacity. Compared to unmodified HKUST-1, PEI20@HKUST-1 shows a 92% enhancement in CO 2 adsorption, attributed to PEI's bidentate adsorption mechanism and flexible polymeric chains, which contribute to a high amine utilization efficiency. Among the environmental factors studied, higher temperatures lower the CO 2 uptake due to thermodynamic constraints, whereas increasing flow rate and humidity first promotes and then suppresses adsorption. The optimal adsorption conditions are identified as 30°C, 20 mL min −1 flow rate, and 45% relative humidity. Moreover, PEI20@HKUST-1 displays good thermal stability and excellent cycling performance, retaining 88% of its initial adsorption capacity after 15 consecutive adsorption–desorption cycles. Kinetic analysis confirms that the adsorption process follows the Avrami model, which indicates a combined physisorption and chemisorption mechanism.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·127515
·
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.
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JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Yanjiao Wang,Ge Yang,Hailing Guo,Xianglong Meng,Guodong Kong,Zixi Kang,Rémy Guillet-Nicolas,Svetlana Mintova
HKUST-1 nanocrystals (50–80 nm) were homogeneously dispersed in a polyetherimide (PEI) polymer matrix . The use of a capping agent (sodium formate) prevented the agglomeration of HKUST-1 nanocrystals in the casting solution. The highly dispersed HKUST-1 nanocrystals were found to strengthen the interactions with the PEI and minimize the interfacial holes by providing more accessible Cu unsaturated metal sites for the C O bonds on the five-membered rings of the PEI matrix. The PEI membrane loaded with 30 wt % HKUST-1 nanocrystals (30-N-HKUST-1/PEI) showed a high H 2 permeability (193.3 Barrer at 25 °C under 1.5 bar) and good ideal H 2 /CH 4 and H 2 /CO 2 selectivity factor of 101.7 and 20.6 in a single gas test, respectively. In the gas mixture test, it also showed a good separation performance, i.e., a H 2 /CH 4 and H 2 /CO 2 selectivity factor of 82.4 and 16.5 was measured, respectively. The 30-N-HKUST/PEI membrane was tested in a gas mixture at different temperatures (25–100 °C), different pressures (0–3 bar) and various time (5–72 h) to study the performance in more realistic conditions thus to be further considered in the separation of syngas.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
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.
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LANGMUIR
·
2023
·
IF 3.9
Qiang Ma,Lijun Jiang,Bowen Yang,Bowen Xu,Qingyuan Wang,Qihong Wu,Ping Ning,Yingjie Zhang,Jin Huang,Jiming Hao
Gaseous thallium (Tl) pollution events, primarily caused by non-ferrous mineral refineries and fossil fuel combustion, have increased over the past few decades. To prevent gaseous Tl distribution from flue gas, MnO2/CeO2@HKUST-1 (MCH) was synthesized and found to achieve a gaseous Tl(I) removal level of up to 90% at 423 K, a weight hourly space velocity (WHSV) of 2000 h–1/mL with an Mn dose of 10%, maintained over 10 h. The best Mn/Ce ratio was found to be 9:1. To further investigate surface kinetic behavior, four commonly used kinetic models were applied, including the Eley–Rideal (ER) model, Langmuir–Hinshelwood (LH) model, Mars–van Krevelen (MVK) model, and pseudo-first-order (PFO) model. While the ER and LH models had the slightest deviation, the MVK model was the most reliable. The CatMAP software was also used to match the simulation deviation. This work demonstrated the Tl removal mechanism and provided insights into the accuracy of kinetic models on minor-radius heavy metal. Thus, this research may help promote the design of reactors, heavy metal removal rates, and flue gas purification technology selection.
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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.
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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.
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ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Yufang Wu,Yiwei Sun,Jing Xiao,Xun Wang,Zhong Li
In this work, a novel Gly@HKUST-1 with simultaneously enhanced moisture stability and improved adsorption capacity was developed by grafting glycine (Gly) onto the open metal sites of HKUST-1, in order to recover light hydrocarbons from natural gas efficiently. The resultant Gly@HKUST-1 had higher C2H6 and C3H8 adsorption capacities compared to HKUST-1 and some other metal–organic frameworks, which reached as high as 6.47 and 7.80 mmol/g at ambient conditions. Its C2H6/CH4 and C3H8/CH4 adsorption selectivities were up to 12.6 and 173.5, respectively. Fixed-bed experiments showed that 0.3Gly@HKUST-1 could separate the CH4/C2H6/C3H8 mixtures completely at ambient conditions, showing excellent separation property toward the light hydrocarbons. More importantly, stability experiments confirmed that after the two samples were exposed to moist air (RH of 55%) for 20 days, 0.3Gly@HKUST-1 still remained its crystal structure, while parent HKUST-1 lost most of its crystallinity. Computational simulations showed that Gly grafting onto unsaturated Cu site played a critical role in enhancing stability against water vapor and improving capacity due to its shielding of unsaturated Cu site as well as introduction of −COOH or −NH2 as the H-binding sites. Gly@HKUST-1 is promising for practical application of efficiently recovering ethane and propane from natural gas by adsorption.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhu Liu,Shoulu Yang,Zhongwei Wang,Ning Ji,Xingong Li,Yingfeng Zuo
The effect of moisture on the volatile organic compound (VOC) adsorption on biomass-derived metal–organic framework composites is significant in practical applications. In this study, wood-based metal organic frameworks (MOF199-W) and hydrophobic MOF199-W (HMOF199-W) were developed using HKUST-1 (MOF199) and long alkyl chains to investigate the adsorption performance of toluene and enhance the selectivity of adsorption under high humidity conditions. The results demonstrated that HKUST-1 could be anchored onto the surface of wood vessels and fibers through coordination with Cu 2+ , resulting in an improved surface area in comparison to natural wood. The toluene adsorption capacity of MOF199-W with a 20 % loading was comparable to that of an equivalent amount of MOF199, with adsorption capacities of 323.5 mg/g and 369.9 mg/g, respectively. Further, the Yoon-Nelson model was found to adequately describe the dynamic adsorption process. Following the introduction of long alkyl chains, MOF199 and MOF199-W were endowed with strong hydrophobic character (water contact angle of 107.0 ◦ , 104.0 ◦ , and water uptake of 30.5 mL/g, 55.3 mL/g). With the increase in humidity, the adsorption performance of MOF199 and MOF199-W for toluene sharply decreased, but HMOF199 and HMOF199-W still maintained the adsorption capacities at 304.7 mg/g and 226.7 mg/g, even under 80 % RH conditions. Therefore, HMOF199-W has shown great potential in wooden building materials with the ability for toluene capture under humid conditions.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Sijie Yuan,Ying Tu,Ru Yu,Fei Nie
Introducing novel catalysts is essential for developing chemiluminescence (CL) systems that exhibit sustained and robust emission. Traditional Luminol-H2O2 systems typically feature flash-type CL emission. In this study, we discovered that the porous material HKUST-1 can induce a long-lasting and intense CL emission when combined with Luminol-H2O2. This long-term emission signal can be directly detected by the smartphone. By changing the calcination temperature, a series of microporous and hierarchically porous HKUST-1 materials were prepared as catalysts to adjust the kinetic characteristics of the CL signal of Luminol-H2O2 system from flash-type to glow-type. A systematic investigation into the influence of the central metal and ligand, aperture, and particle size of HKUST-1 on the CL kinetic properties revealed that the pore structure has the most pronounced impact on the dynamics of the Luminol-H2O2 CL reaction. Capitalizing on the intense emission of the HKUST-1-catalyzed Luminol-H2O2 system, we established a CL sandwich immunoassay strategy for concanavalin A (ConA), demonstrating good linearity and low detection limit. This research presents a significant endeavor in modulating the dynamics of CL signal emissions.
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JOURNAL OF LIGHTWAVE TECHNOLOGY
·
2025
·
IF 4.8
Hongrong Zheng,Xin Kang,Qihao Yang,Haider Syed Irshad,Dingyi Feng,Fu Liu,Xuetao Gan,Biqiang Jiang
Recent increased attention to environmental and health monitoring demands faster response and reliable gas concentration measurement technology. Herein, we propose an optical fiber-based strategy for fast ethanol gas concentration sensing using a tilted fiber grating (TFG) assisted with a nanolayer of HKUST-1. The TFG excites unique cladding mode resonances and strong evanescent field that interact with the in-situ grown HKUST-1 nanolayer that provides a path for the penetration and absorption of ethanol gas. The TFG, functionalized with 281 nm thick HKUST-1 nanolayer, exhibits a sensitivity of 7.7 nm/% over an ethanol gas concentration range of 0∼0.14% and a limit of detection of 35 ppm at room temperature, by tracking the resonance wavelength shift of a cladding mode. Time-domain experiments reveal the response and recovery times of 26.7 s and 10.3 s, respectively, attributed to the high surface area and porosity of the HKUST-1 nanolayer. The proposed fiberoptic ethanol gas sensor offers ease of integration, rapid response, and high repeatability and reliability, making it suitable for applications such as chemical plant leakage monitoring and medical breath analysis.
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