Inorganic Chemistry Frontiers
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2018
·Vol. 5
·期 12
·3163-3169
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IF 5.106
Jinman Yang,Xingwang Zhu,Zhao Mo,Jianjian Yi,Jia Yan,Jiujun Deng,Yuanguo Xu,Yuanbin She,Junchao Qian,Hui Xu,Huaming Li
We fabricated a multidimensional heterostructured In2S3–CuInS2 photocatalyst to convert CO2 to CO. The hybrid photocatalyst can be obtained by using an In-containing MOF as a precursor followed by sulfidation and ion exchange. Moreover, the multidimensional structure, a 2D nanosheet semiconductor distributed on 1D hollow nanotubes, inhibits the recombination of charge carriers, increases CO2 adsorption and affords a large surface area promoting exposure of plentiful active sites. As a result, the as-synthesized optimal heterostructured In2S3–CuInS2 display a excellent activity with the CO evolution rate of 19.00 μmol g−1 h−1 over the under visible light irradiation, which is roughly four times higher than that of pristine In2S3. This work might pave the way for increasing the performance of metal sulphide photocatalysts by MOF-guided chemistry.
研究领域:
材料科学
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环境科学
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SEPARATION AND PURIFICATION TECHNOLOGY
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2017
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IF 3.359
Yingcai Zhao,Jiawei Wang,Zongbi Bao,Huabin Xing,Zhiguo Zhang,Baogen Su,Qiwei Yang,Yiwen Yang,Qilong Ren
A magnesium-based metal-organic framework with high hydrothermal stability, Mg-CUK-1, was investigated for the adsorption separation of acetylene from ethylene. The synthesized MOF remained excellent thermostability even near 500 °C according to TGA results. Characterization techniques including FTIR, SEM, and PXRD were utilized to confirm the detailed structure and properties of the Mg-based MOF. It exhibited moderate adsorption capacities of C 2 H 2 (3.01 mmol/g at 100 kPa and 273 K). Moreover, it showed preferential adsorption of C 2 H 2 over C 2 H 4 with C 2 H 2 /C 2 H 4 adsorption selectivity over 3, outperforming some popular MOFs. Furthermore, the isosteric heat of C 2 H 2 (<21 kJ/mol) and C 2 H 4 (<18 kJ/mol) were extremely lower than those MOFs with open metal sites. From an industrial point of view, this MOF could be synthesized in absence of organic solvent, drastically reducing the risk of environmental pollution in the production process. Besides, such advantages as excellent hydrothermal stability, cheap and non-poisonous metal ion resource, high C 2 H 2 adsorption capacity, and low isosteric heat make the Mg-based MOF promising in practical application.
研究领域:
材料科学
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化学工程
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PROGRESS IN ORGANIC COATINGS
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2026
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IF 7.9
Jiahao Ma,Mengsheng Xia,Jiwei Chen,Yixi Su,Chao Wang,Wenbo Shi,Weizhao Meng,Enhui Liu,Weiqi Fu
The development of marine antifouling coatings that are both highly effective and environmentally sustainable presents a persistent challenge, impeding their widespread commercial application. To address this challenge, we developed sustained-release composite coatings by incorporating Zn (II)-Ln (III) bimetallic metal-organic frameworks (MOFs) into a polyurethane (PU) matrix. Four MOF variants (i.e., H₂FDA@Gd, H₂FDA@Ce, H₂OBA@Gd, and H₂OBA@Ce) were solvothermally synthesized using antifouling ligands (H₂FDA/H₂OBA) with Zn 2+ /Gd 3+ /Ce 3+ nodes, which were used as a filler for polyurethane resin, featuring bcu-topology frameworks and bidentate bridging coordination. These MOFs, which are composed of antifoulants, can degrade gradually in seawater. Therefore, the coatings demonstrated multifunctional antifouling performance, achieving 86% - 92.5% adhesion reduction against E. coli and S. aureus , as well as 75.5% against P. tricornutum , in addition to sustained lanthanide ion release and enhanced corrosion resistance. MOFs extend the path of the corrosive medium, exhibiting excellent anti-corrosion performance of the composite coatings. Field testing confirmed near-complete resistance to SRB corrosion and a maximum reduction in corrosion area of 76.28%. This work establishes an eco-friendly strategy through controlled MOF degradation that concurrently releases bioactive ligands and metal ions, enabling long-term marine protection with minimal environmental impact.
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APPLIED SURFACE SCIENCE
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2023
·
IF 6.7
Tian Gao,Hua Zhang,Xiang Zhao,Shujuan Xiao,Ziyang Zhang,Shouwu Yu
The low photocatalytic efficiency of a single MOF limits its application, and the assembly of different MOF into MOF-on-MOF heterojunctions can construct fine charge transfer interfaces, thereby improving the photocatalytic ability. In addition, the heterojunction constructed by the two MOFs can maintain the porous structure of the MOF material to a large extent, which is conducive to the adsorption behavior. In this paper, Z-scheme heterojunction is prepared by solvothermal growth of MIL-88B on NH 2 -MIL-125 matrix. The Z-scheme heterojunction of NH 2 -MIL-125@MIL-88B greatly improves the photo-response range and charge separation efficiency. It showed good photocatalytic activity for tetracycline (TC) degradation. Under visible light irradiation, the removal efficiency of NM-3 catalyst with the best performance reached 96.26 % within 120 min, and the rate constant was 0.02428 min −1 , which was about 9.75 times and 4.16 times of NH 2 -MIL-125 and MIL-88B alone. The results of free radical trapping and ESR indicated that O 2 − and OH take important parts in the photodegradation of TC. The active sites and degradation pathways of TC vulnerable to attack were predicted by DFT calculation and intermediate analysis. The design and preparation of Z-scheme heterojunction provide a new strategy for visible light degradation of TC.
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PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
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2020
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IF 3.57
Sittipranee Ploychompoo,Qianwei Liang,Xin Zhou,Chen Wei,Hanjin Luo
Contamination of drinking water with heavy metals, particularly arsenic (As), is a persistent problem with serious public health implications worldwide. In this study, we present a zinc based metal-organic framework (Zn-MOF-74) and polyacrylamide polymer (PAM) coated on reduced graphene oxide (rGO) as an effective adsorbent for the removal of arsenite (As(III)) from water. Zn-MOF-74 nanoparticles were prepared by room-temperature precipitation and these were immobilized on rGO surface grafted PAM by a free-radical polymerization method, (Zn-MOF-74/rGO/PAM nanocomposites). The experimental data correlates well with the pseudo-second-order kinetic model and Langmuir isotherm, and the maximum adsorption capacity ( q max ) was 282.4 mg g −1 at pH 10, 298 K. The removal efficiency was rapid, removing more than 99.8% of As(III) from a 0.2 mg L −1 solution and achieving drinkable levels in 15 min. Thermodynamic data revealed that the process was spontaneous and endothermic. Furthermore, the adsorbent revealed high stability in pH range 4–10 and could be reused at least four times. Adsorption mechanism involved a synergistic combination of chemisorption and physisorption. FTIR and XPS analyzes revealed that the amide group (–NH 2 ) and hydroxyl group (–OH) on Zn-MOF-74/rGO/PAM dominate in their adsorption.
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Yutian Cai,Runyang Zhou,Shanshan Zhang,Mengke Qiao,Yongzhi Cheng,Yingli Zhu,Hui Luo,Pingan Chen,Xiangcheng Li,Fu Chen
MOFs-derived magnetic carbon-based composites exhibit great application potentials in electromagnetic absorption field. Nowadays, the MOF-on-MOF hybrid materials, constructed by self-assembly of two or more MOFs, gradually become the prevailing precursors for efficient microwave absorbers due to the flexible structure and component design which are beneficial to improving microwave attenuation and optimizing impedance matching. Herein, the binary MOF-on-MOF hybrid templates MIL-88A@ZIF-67 has been fabricated based on a surfactant-assisted growth strategy, and subsequently thermally converted into the spindle-like Co 3 Fe 7 @NC/magnetic MWCNTs composites (CFM) through a DCDA-assisted carbothermal reduction method. It has been revealed that the carbothermal temperature could not only regulate the crystallinity of Co 3 Fe 7 alloys and magnetism of CFM composites, but also make significant impact on chemical and mesoscopic structure of conductively hierarchical architecture composed by surficial MWCNTs and pyrolytic carbon derived from various ligands of different MOFs. Among the three proposed absorbers in this work, the CFM-700 sample with densest surficial magnetic MWCNTs achieved a satisfied balance between intrinsic microwave consumption and impedance matching due to the magnetic-dielectric synergistic effect. The reflection loss of CFM-700 could keep staying below −20 dB in an ultra-wide range from 3.6 GHz to 18.0 GHz when the thickness varies from 1.3 mm to 5.45 mm. Moreover, the minimum reflection loss of CFM-700 is −68.75 dB at 1.88 mm and the effective absorbing bandwidth could reach 4.72 GHz at only 1.55 mm. It is believed that this work paves an inspiring way to design conductively hierarchical magnetic carbon-based composites with excellent microwave absorption through construction of MOF-on-MOF hybrid structures.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Haoran Yin,Menghan Huang,Lixia Wang,Sheraz Muhammad,Tayirjan Taylor Isimjan,Jingya Guo,Dandan Cai,Bao Wang,Xiulin Yang
Constructing defective heterojunctions is crucial for enhancing the intrinsic activity of metal-organic framework (MOF)-based electrocatalysts for efficient alkaline water splitting, yet it remains a significant challenge. Here, we present a novel oxygen-vacancy-rich MOF-on-MOF heterojunction nanosheet catalyst (Ni NDC@Fe BDC/CP) fabricated on carbon fiber paper through lattice mismatch. Experimental and theoretical analyses reveal that this catalyst, with an ultra-thin nanosheet morphology (∼ 4.3 nm), abundant oxygen defects, and a tightly coupled heterojunction interface, facilitate interfacial charge transport. It optimizes the d-band center, enhances oxygen-containing intermediate adsorption, and promotes the formation of highly active Ni(Fe)OOH species, significantly boosting OER performance. In comparison to individual Ni NDC/CP and Fe BDC/CP, the obtained Ni NDC@Fe BDC/CP exhibits competitive OER performance, delivering an overpotential of 192/239 mV at a current density of 10/100 mA cm −2 and a small Tafel slope of 38.8 mV dec −1 . When coupled with Pt/C/CP in an overall water splitting device, the Ni NDC@Fe BDC/CP (+) ||Pt/C/CP (−) achieves a cell voltage as low as 1.43 and 1.54 V at 10 and 100 mA cm −2 , respectively, surpassing benchmark catalysts RuO 2 and Pt/C.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jun Yu,Hao Yang,Xiangyu Li,Xupeng Chen,Wenyue Li,Xingang Li,Chun Zhang
Semiconductor photocatalytic technology is recognized as one of the effective technologies for using solar energy to solve current environmental problems. In this study, a Z-scheme heterojunction ZnFe 2 O 4 /Er-ZnO hollow nanotube composite was prepared by hydrothermal method. The results show that the degradation efficiency of tetracycline (TC) in ZnFe 2 O 4 is only 51 %, while the degradation efficiency of ZnFe 2 O 4 /2% Er-ZnO hollow tube composites is as high as 97 %. At the same time, ZnFe 2 O 4 /2% Er-ZnO has a larger specific surface area (specific surface area of 224.39 m 2 · g −1 ), which is 27 times that of ZnFe 2 O 4 (specific surface area of 8.30 m 2 ·g −1 ). Density functional theory (DFT) calculations and experimental analysis show that the doping of Er, the unique hollow structure and the formation of heterojunction make ZnFe 2 O 4 /2% Er-ZnO have a large specific surface area, efficient carrier separation ability and strong redox ability, so the Z-scheme heterojunction ZnFe 2 O 4 /2% Er-ZnO hollow tubular composites have strong degradation ability for tetracycline. In addition, the liquid chromatography-mass spectrometry (LC-MS) analysis technique was used to propose the possible degradation pathways of antibiotics, which provided ideas for the treatment of water pollution.
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Journal of Water Process Engineering
·
2024
·
IF 6.3
Yupeng Pan,Xuewei Li,Zile Zhuang,Yihan Li,Zhiyi Wang,Qizhi Luo,Xuncai Chen
The utilization of MOF-on-MOF heterojunction materials has demonstrated exceptional functional scalability; however, their application in the realm of photocatalytic degradation remains relatively limited. This study focuses on the synthesis of a MOF-on-MOF heterojunction involving the growth of Prussian blue (PB) onto the surface of ZIF-8, with ZIF-8 serving as a seed. The optimized MOF-on-MOF heterostructure catalyst, denoted as PB@ZIF-8, exhibited a degradation efficiency exceeding 98 % across the pH range of 4.0–10 in the Fenton system under sunlight irradiation. Notably, the reaction rate constant in the PB@ZIF-8/H 2 O 2 /Sun system was 0.029 min −1 , which is 2.43 and 2.36 times higher than that of pure PB and ZIF-8. The superior performance of PB@ZIF-8 was attributed to the synergistic effect of PB and ZIF-8 in the MOF-on-MOF composite, which played a pivotal role in the tetracycline degradation process by enhancing light absorption and facilitating the separation of carriers. Furthermore, the PB@ZIF-8 catalyst exhibited exceptional stability, allowing for 5 cycles of recycling while consistently maintaining a degradation efficiency exceeding 97 %. This research not only expands the possibilities for architecting MOF-on-MOF structures but also contributes to the development of heterojunction materials for the removal of emerging pollutants from wastewater.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Rou-Yu Li,Wenyu Yuan,Meng-Ru Cui,Boda Li,Hui Zhang,Zhenhao Peng,Quan-Guo Zhai
The interfaces in heterostructure photocatalysts play an important role in charge migration, but the rational controllable interfacial construction remains a challenge. Herein, a covalently bonded interface with delocalized π bonds was controllably constructed via the encapsulation of UiO-66-NH2 nanoparticles in MUV-10 skeletons. The UiO-66-NH2/MUV-10 heterojunction enabled both efficient capture and conversion of CO2 and H2O. The delocalized π bond in the covalent interface efficiently accelerated interfacial charge migration, suppressed carrier recombination, and reduced the work function for electronic effusion. As a consequence, UiO-66-NH2/MUV-10 exhibited superior CO2 photoreduction activity with H2O under visible light irradiation in the gas–solid phase. The CO evolution rate reached as high as 38.7 μmol g−1 h−1, which surpassed that of most commonly reported gas–solid phase photocatalysts. This work not only provides a feasible strategy for the controllable construction of interfaces but also demonstrates the great potential of interfacial engineering for efficient photocatalysis and other related areas.
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Applied Materials Today
·
2024
·
IF 7.2
Chao Su,Zexuan Wu,Jing Zhang,Kaiyang Li,Yanqiang Kong,Naiqiang Zhang,Yongping Yang
Efficient freshwater production techniques are urgently required to address the global water-scarcity problem. The solar-driven atmospheric water harvesting (AWH) technology, which can capture water vapour from ambient air and release it under sunlight, is a sustainable and feasible strategy for obtaining fresh water. The key to achieving high water harvesting lays in the dynamic adsorption properties of the material and the heat and mass transfer characteristics of the device structure. Therefore, this paper reports a core-shell structured material, UiO-66@MIL-101(Cr) (U@M), where the outer layer exhibits excellent water-adsorption characteristics under arid conditions, and the inner layer exhibits high water-adsorption characteristics under high humidity conditions. These inner and outer layer materials are assembled into a core-shell structure while considering the water-harvesting features of both sides, achieving synergistic enhancement of the AWH performance at low relative humidity (RH). Experimental results demonstrate that at 25°C and 30 % RH, the novel core-shell structured material achieves a high water-harvesting capacity of 0.408 g g −1 and excellent stability in 50 operating cycle tests. At the system level, we have developed a solar-driven AWH device based on the synthesised core-shell material. Daytime and night-time experimental tests were conducted in outdoor environments, resulting in a water production rate exceeding 1.336 kg m − ² day − ¹, with the collected water meeting the standards for laboratory-grade pure water. The research findings can be applied to alleviate water issues in arid regions, such as residential water supply, industrial electrolysis for hydrogen production and other fields, showing broad application prospects.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Xiaoyan Liu,Pengyu Guo,Zhiwei Liu,Borong Zhang,Sijia Li,Xin Liu,Yunling Liu
Although the one-step separation of ethylene from C2 hydrocarbons remains a significant challenge, one-step C2 separation provides a revolutionary breakthrough in cost savings and efficient energy utilization. Recent advances in metal–organic frameworks (MOFs) for achieving one-step C2 separation have been widely recognized. In this work, for the first time, the potential relationship between the structure and properties of MOF materials previously used for one-step C2 separation was revealed from a mathematical statistical perspective. Additionally, the importance of N/O sites in enhancing the selectivity of C2H6/C2H4 separation is elucidated as a supplementary finding. Guided by the above findings, a pillar-layered MOF (JLU-MOF167) was synthesized using a mixed-ligand strategy. The unprecedented layer structure, composed of triazole units and multiple Cd units, provides an optimal thickness that creates a large number of N/O sites. Simultaneously, the tortuous channels between the pillars ensure sufficient interaction space between the molecules and the framework. The excellent structural design enables JLU-MOF167 to exhibit outstanding performance in both C2H2/C2H4 and C2H6/C2H4 separations as well as dynamic separation capabilities. Furthermore, theoretical calculations confirm the critical role of high-density N/O sites in facilitating one-step C2 separation.
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