JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Guangjun Liu,Xiaoyang Yu,Fei Zhou,Keling Yan,Lanrui Yin,Changfu Zhuang,Ying Wang,Di Tian
In this paper, a 2 dimensional (2D) metal–organic frameworks (MOFs) nanosheets grown on 1D ZIF-67 modified carbon nanofibers (CNFs) was designed and fabricated with a hierarchical heterostructure. The hierarchical 2D/1D MOFs/CCNF offers rich electrochemical active sites and favorable ion/electron diffusion pathways. The synergistic effect of Co, CNFs and MOFs from heterostructures contributes to superb electrochemical activities. Benefiting from the hierarchical heterostructures optimized by the mass ratio of ZIF-67/PAN and CCNF/NiMOF as well as the type of substrates, CCNF-20@MOF showed a specific capacity of 361.50 C g −1 at 0.5 A g −1 , whose charge storage mechanism is dominated by diffusion control. Meanwhile, a bamboo-derived carbon material (BBC) was designed in the solid-state asymmetric supercapacitor (CCNF-20@MOF//BBC). The device exhibited an energy density of 38.89 Wh kg −1 at the power density of 800.02 W kg −1 and excellent cycling stability, that exceed many MOFs based devices. Moreover, it could be successfully used for LED light-emitting, demonstrating a good application prospect. This work provides a feasible strategy for the improved performance of MOFs and CNFs based materials in the field of energy storage.
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FOOD CHEMISTRY
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2024
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IF 8.5
Hongyuan Zhang,Jieqiong Wang,Wei Wu,Ce Han,Ming Li
A novel electrochemical sensor for detecting heavy metal ions in seafood was developed to address food safety concerns. The sensor integrates graphene oxide into NH 2 -UiO-66 loaded nanofiber carbon aerogel, enhanced its three-dimensional conductive network and effective active surface area (0.34 cm 2 ), which improved ion enrichment and oxidation-reduction reaction rates. Using the Box-Behnken design, the sensor was optimized to detect cadmium and lead with LODs of 0.16 μg·L −1 and 0.07 μg·L −1 in the 1 to 150 μg·L −1 linear range. Applied to real seafood samples, the sensor showed results consistent with ICP-OES, confirmed its reliability in complex substrates. This approach offered a promising, low-cost solution for real-time monitoring of heavy metal contamination in seafood, ensuring public food safety.
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MICROPOROUS AND MESOPOROUS MATERIALS
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2024
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IF 4.8
Kunpeng Liu,Yixuan Yu,Qi Wang,Lingtong Kong,Tianjun Sun
A comprehensive investigation was conducted to explore the adsorption behaviors of CH 4 over N 2 on ultra-microporous Al/Zr-FDCA frameworks, which were synthesized specifically using the eco-friendly and bio-sourced 2,5-furandicarboxylic acid (FDCA). Characterization results revealed that both Al-FDCA and Zr-FDCA exhibited similar specific surface area and surface groups, leading to comparable methane uptake per-unit mass at atmospheric pressure. However, the presence of Zr nodes generated ultra-micropores around 0.43 nm in size, leading to a pronounced affinity for CH 4 . Zr-FDCA demonstrated a higher CH 4 /N 2 selectivity (8.90) calculated from the isotherms compared to Al-FDCA (3.86). Furthermore, breakthrough experiments indicated that under the same dynamic conditions, Zr-FDCA exhibited 1.5 times higher CH 4 uptake per unit volume and 2.5 times higher CH 4 /N 2 selectivity when compared to Al-FDCA. Initially, a four-step VPSA process was simulated to investigate the separation of CH 4 /N 2 mixture, in which the effects of feed-gas flow rate, adsorption time, adsorption pressure, and desorption pressure in VPSA cycle were extensively evaluated to enhance the purity and recovery of methane. Subsequently, a six-step process was employed for further optimization, achieving a purity of 95.9 % and a recovery of 99.1 %. The obtained results demonstrated the reliability of the established model and highlighted the significant potential of Zr-FDCA for CH 4 /N 2 separation.
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JOURNAL OF POROUS MATERIALS
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2025
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IF 3.2
Zhang Xu,Peng Xiaoqian,Liu Shaojun,Liu Xiaochan,Liu Guoran,Liu Rongshuang,Niu Jiale,Yuan Zhipeng,Zhang Jing,Yi Xibin,Filatov Serguei
A current challenge for natural gas adsorbed storage technology is to find specialized adsorbent materials that are able to store and deliver large amounts of methane (CH 4 ) near room temperature and at low pressures. In this study, bimetallic MOFs is supported on nitrogen-doped carbon foam derived from melamine (MC@NZn) by vacuum impregnation process as an adsorbent for CH 4 storage. The nitrogen-doped carbon foam with macroporous internetwork combined with high surface area and micro-/mesoporous structure of the NiZn-MOF leads a hierarchical porous structure, which provides efficient and rapid pathways for the penetration of CH 4 molecules and more active sites for CH 4 adsorption. Experimental results show that MC@NZ4 exhibits a CH 4 adsorption capacity of 105.80 cm 3 ·g -1 under 298 K and 60 bar with isosteric heat of adsorption of 10.71 kJ·mol -1 . Furthermore, MC@NZ4 achieves a CH 4 /N 2 adsorption selectivity of 5.63, indicating its potential for CH 4 adsorption. This work provides a simple method to combine MOF powders with three-dimensional skeleton substrate material to fabricate monolithic solid porous materials, which can find potential applications in gas adsorption.
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ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Hao Wang,Yinjie Wang,Tianyu Li,Chuang Yu,Peng Lin,Jiping Liu,Yuxuan Lan,Ye-Tang Pan
Flexible polyurethane foams are widely used in building and vehicle interiors due to their lightweight and high resilience. However, most foams are non-biodegradable or fireproof, leading to serious white foam pollution and safety problems. Here, FPUF made of a porous MOF material loaded with flame retardant elements as a coating is reported, which realizes fire protection, isolation of heat and noise, and recovery of foam. The results show that FPUF-3 exhibited excellent fire and smoke suppression effects, and PHRR, CO production, and CO 2 production are reduced by 28.5%, 54.5%, and 21.4%, respectively. The FPUF-3 shows a longer heat preservation effect and can reduce the common noise decibel by >35%. In addition, the coating exhibits excellent stability under extreme acid–base conditions and has longer durability and effectiveness under alkaline conditions. Furthermore, the separation and recovery of FPUF and coating can be realized by ethanol solvent, and the recovery rate of coating can reach >80%, the foam still has the original high elasticity and lightweight characteristics. It provides a sustainable and practical solution for effectively improving the noise reduction, fire prevention, and heat insulation capabilities of FPUF.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Yong Lai,Zhenzhen Sun,Hantao Wen,Hanming Ding
Fenton-like technology is an eco-friendly and efficient method to degrade organic contaminants. Herein, a bimetallic catalyst with high catalytic activity was obtained by anchoring Co and Mn on N-doped carbon materials (MnCo/N-C) through a one-step pyrolysis process. Peroxymonosulfate (PMS) was activated by cobalt nanoparticles, nitrogen-coordinated metal atoms, and defect sites in MnCo/N-C to produce several reactive species, including SO 4 •– , 1 O 2 , O 2 •– , and •OH. The catalyst showed high activity and excellent stability during the catalytic processes. The degradation of 50 mL of rhodamine B solution with a concentration of 0.03 g/L was almost completed in only five minutes by using 0.1 g/L of the catalyst and 0.2 g/L of PMS. Furthermore, the catalyst could be used over a wide pH range of 3–11. Overall, this work provides a simple approach to preparing a more effective and long-lasting Fenton-like catalyst for the degradation of organic contaminants.
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ACS Applied Polymer Materials
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2024
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IF 4.4
Naipu He,Wen Li,Tingting Shi,Zongjie Li,Fengchuan Guo,Zongxin Li,Xuerui Zhao
ZIF-8@chitosan (CS)/polyvinylpyrrolidone (PVP) hydrogels (CPxHGZ) were fabricated by in situ growth of metal–organic framework (MOF) crystals on the network of CS/PVP semi-interpenetrating hydrogels. The ZIF-8 crystals were assembled in the channel of hydrogel and coated by networks of hydrogel. Morphology and distribution of the ZIF-8 crystals in CS/PVP hydrogels were modulated by the polymer network of hydrogels. PVP played a key role in guiding the growth of ZIF-8 crystals and preventing aggregation of ZIF-8 crystals in the network of CS/PVP hydrogel. Additionally, the PVP content in hydrogels influencing the adsorption capacity of CPxHGZ for CO2 was explored. With increasing PVP content in the hydrogels, the equilibrium adsorption of CPxHGZ for CO2 was increased. Especially, the equilibrium adsorption of CP10HGZ for CO2 was increased by 22%, which was higher than that of the pure ZIF-8 crystals. The results of kinetic simulation, XRD spectra, and FT-IR spectra revealed that the adsorption mechanism of CPxHGZ for CO2 was mainly chemisorption. The presence of multisites, including the amine groups in CS and PVP as well as metals in ZIF-8, was beneficial for enhancing the adsorption capacity of CPxHGZ for CO2.
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LANGMUIR
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2024
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IF 3.7
Xiaotian Zhang,Zipeng Jin,Kunting Li,Yisheng Hu,Lei Xu,Baiyan Li
Despite their high surface area, remarkable porosity, and efficient charge transfer mechanisms, conductive MOFs have found limited utilization within the domain of photocatalysis. In this study, we synthesized a cutting-edge S-type Ni3(HITP)2/TiO2 heterojunction photocatalyst exhibiting outstanding light harvesting and prolonged lifetime of photogenerated electrons through an in situ synthesis approach. Compared with TiO2, the composite materials not only significantly increase the specific surface area by 4.07 times but also expand the visible light absorption edge from 400 to 1100 nm. The hydrogen production rate of Ti/Ni-3 reached 4.927 mmol·g–1·h–1, which is 4.51 times that of TiO2. The S-type interface charge transfer pathway of the Ni3(HITP)2/TiO2 composite material was inferred by band structure, in situ XPS, SPV, and free radical capture, which improves charge separation and extends the carrier lifetime to undergo directional migration driven by an IEF. This is the main reason for the improved photocatalytic performance of Ni3(HITP)2/TiO2 composite materials.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Wangchang Geng,Pengfei Song,Xinrou Cao,Libing Duan
Metal oxides derived from metal-organic frameworks (MOFs) can maintain the porosity and unique structure of MOFs, giving them significant development potential in the field of gas sensing. In this study, bimetallic Ni/Zr-MOFs solid microspheres were synthesized via the solvothermal method, and NiO/ZrO 2 composites with p-p heterostructure were further prepared through an annealing process. The morphology, structure, specific surface area, and pore size of NiO/ZrO 2 composites were analyzed using a series of characterization techniques. The gas sensing performance study showed that the NiO/ZrO 2 -2 sensor exhibited higher response (32.3–100 ppm), lower detection limit (7.2 ppb), shorter response/recovery time (55 s/83 s), and excellent repeatability to triethylamine gas at the operating temperature of 240 ℃. Additionally, within a specific range (1–200 ppm), a strong linear relationship was observed between the response value and the gas concentration for the NiO/ZrO 2 -2 sensor (R 2 =0.9588). This study is expected to provide a valuable reference for designing high-performance triethylamine sensors.
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CHEMISTRY OF MATERIALS
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2024
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IF 7.2
Xiao-Mei Yu,Yihu Ke,Xue Wang,Hai Liu,Hong Yuan
The specific structure of the support and the interactions between the catalyst components can lead to electron transfer, which in turn could affect the catalytic performance in heterogeneous catalytic reactions. In this paper, we have successfully prepared MnxOyCz composite materials from the calcination of the Mn-organic framework. Then bimetallic Au–Pt nanoparticles (NPs) were supported onto MnxOyCz via the colloidal-deposition method. These catalysts were tested in the selective oxidation of glycerol to glyceric acid under basic conditions. The results demonstrated that the catalytic activity of the bimetallic Au–Pt/MnxOyCz catalyst is considerably superior to those of the monometallic (Au and Pt) supported catalysts. Under the optimized conditions, 100% of glycerol can convert with 57.3% selectivity of glyceric acid. Multicharacterizations showed that the strong interaction between Au and Pt in the Au–Pt/MnxOyCz catalyst can enhance the dispersion of Au–Pt alloy NPs, promoting the electronic coupling effect on the metal surface. At the same time, the rich oxygen vacancies in this catalyst can facilitate the activation of oxygen, which causes the Au–Pt/MnxOyCz catalyst to show better catalytic activity. Specifically, the interaction between Au and Pt not only decreases the particle size of the Au–Pt alloy NPs but also promotes the reduction of Mn-based oxides and the mobility of oxygen. The absence of Au leads to a decrease in Pt 4f7/2 binding energy, resulting in an enrichment of electrons at the Pt active site and enhancing the oxidation ability of the primary hydroxyl group. In addition, the Au–Pt/MnxOyCz catalyst showed excellent stability without substantial loss of activity after being recycled five times. The insights and methodology may provide some new guidance for the reasonable design of bimetallic catalysts for the catalytic oxidation of biopolyols under mild conditions.
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ENVIRONMENTAL POLLUTION
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2024
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IF 7.6
Yaoyu Zhou,Jianlong Wang
Electro-Fenton (EF) can in-situ produce H 2 O 2 and effectively activate H 2 O 2 to generate powerful reactive species for the destruction of contaminants under acidic conditions, however, the production of iron-containing sludge and requirement of low working pH significantly hinder its practical application. Herein, a novel Cu, N co-doped carbon (Cu–N@C) with metal organic framework (MOF) as a precursor was constructed and adopted for the elimination of pefloxacin (PEF) in the heterogeneous electro-Fenton (HEF) process. PEF could be almost completely removed within 1 h and total organic carbon (TOC) removal efficiency was 48.57% within 6 h. Meanwhile, Cu–N@C had good repeatability and environmental adaptability, it can still maintain excellent catalytic performance after 10 cycles, and it exhibited satisfactory remediation performance in simulated water matrix. In addition, the HEF process catalyzed by Cu–N@C also showed satisfactory degradation effect on other organic pollutants including atrazine, methylene blue, and chlorotetracycline. Under the action of impressed current, the HEF system could generate H 2 O 2 in-situ, and the active species could be generated in the redox cycle of Cu 0 /Cu 1+ /Cu 2+ . Electron paramagnetic resonance and quenching experiments confirmed that •OH was the dominant active species in the degradation of organic compounds. The degradation process of PEF was studied by mass spectrometry analysis of intermediate products. This study provided a simple method to prepare MOF-based electrocatalyst , which exhibits promising application potential for treatment wastewater .
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COLLOID AND POLYMER SCIENCE
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2025
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IF 2.3
Zhang Fei,Xie Mingzhu,Zhao Jing
With the rapid development of nanotechnology, nanocarriers play an important role in achieving precise drug delivery and controlled release. Among them, nanoscale metal organic frameworks (NMOFs) have shown great potential due to ultra-high specific surface area, controllable size, tunable structure and open metal sites. The aim of this study is to enhance the multifunctionality of UiO-66-NH 2 NMOFs, such as physiological stability, biocompatibility, pH responsiveness, and targeting, by post-synthetic modification with hyaluronic acid-dopamine (HA-DA) functional material. The structure, size, and morphology were characterized by IR, XRD, DLS, and SEM, and the stability, drug-loading capacity, controlled release, and biocompatibility under different conditions were evaluated. The results showed that the particle size distribution and surface properties were improved after modification. This modification not only enhanced the stability in physiological environment, but also accelerated drug release in the acidic environment and improved drug bioavailability, which was of great significance for targeting acidic microenvironments. Cytotoxicity experiments further showed that the introduction of HA-DA effectively reduced the cytotoxicity and provided more suitable environment for cell growth. This study can achieve responsive release, alleviate inflammatory response, and promote tissue repair, especially for sports injuries, which provides a new approach for developing efficient and safe drug delivery systems. Graphical abstract Based on the structural properties of NMOF, a UiO-66-NH 2 NMOF drug delivery system was constructed by the post-synthetic modification of hyaluronic acid-dopamine (HA-DA). This kind of drug delivery system exhibits excellent stability and biocompatibility, and achieves responsive release, which may alleviate inflammatory response and promote tissue repair. This study provides a new approach for developing efficient and safe drug delivery systems.
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