JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2024
·Vol. 35
·期 22
·1-15
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IF 2.8
Zhang Xue-Feng,Fu Yun-Xuan,Wang Jun-Chuan,Li Xiao-bing,Zhao Zhao-Ye,Wu Xiang-Feng,Wang Hui,Ci Li-jie
The In 2.77 S 4 /In-MOFs Z-scheme heterojunction composite photocatalysts were successfully synthesized via an insitu hydrothermal growth method. The chemical structure, morphology, optical properties, and photogenerated carriers transfer behavior of the as-prepared In 2.77 S 4 /In-MOFs composites were characterized in details. The In 2.77 S 4 /In-MOFs (10 wt%) composite showed the optimal photocatalytic degradation efficiency of 95.9% in 90 min for the tetracycline (TC) model pollutant, which was significantly higher than that of pure In 2.77 S 4 (75.1%) and In-MOFs (9.7%). The X-ray photoelectron spectrometer (XPS), photoelectrochemical, and electron paramagnetic resonance (EPR) technique were carried out to illuminate the photocatalytic degradation mechanism of In 2.77 S 4 /In-MOFs (10 wt%) for TC, which showed that the Z-scheme heterojunction structure of In 2.77 S 4 /In-MOFs (10 wt%) could reinforced the light harvesting capacity and promote the photogenerated carrier migration under visible light irradiation. Furthermore, the photogenerated holes play a major role during the photocatalytic degradation reaction. Finally, this work maybe offers an effective method for the designing In 2.77 S 4 -based Z-scheme heterojunctions to facilitate the charge carrier transfer in heterogeneous catalysts.
研究领域:
材料科学
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环境科学
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化学
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2025
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IF 3.5
Sheli Zhang,Yuerong Yan,Huijie Shan,Yunchang Fan,Haibao Zhu
The chemical fixation of carbon dioxide (CO 2 ) represents a viable strategy to achieve carbon neutrality. However, the conversion of CO 2 is still limited by the lack of efficient heterogeneous catalysts. To address this problem, a flexible linker-based metal-organic frameworks were synthesized using hard Lewis acid indium as metal center (In-MOFs) and their catalytic performance for the CO 2 cycloaddition with epoxides in the absence of solvent and co-catalyst was evaluated. Experimental results revealed that In-MOFs exhibited great catalytic activity (cyclic carbonate yield, 97.2 %) and selectivity (>98 %) for the cycloaddition of CO 2 and epichlorohydrin (ECH) under mild conditions (80 °C for 5 h, 0.1 MPa CO 2 ) due to the strong Lewis acidity of In (III), which significantly lowered energy barrier of epoxide ring opening and the insertion of CO 2 , consequently promoting the CO 2 cycloaddition reaction. These results suggested that the In-MOFs exhibited promising potential as catalysts for the CO 2 chemical fixation and may provide a new approach for the fabrication of MOFs-based catalysts for the CO 2 conversion.
研究领域:
材料科学
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催化化学
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环境化学
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无机化学
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可持续能源
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高影响因子
Environmental Science-Nano
·
2024
·
IF 5.8
Xinyu Liu,Chenchen Li,Jian Nan,Ruike Liang,Huabin Wang,Rui Xu,Yong Zhang
A combination of metal–organic frameworks (MOFs) with TiO2 can improve the performance of TiO2 in the photocatalytic degradation of organic pollutants. The selection of organic ligands for MOF preparation is a key factor for designing MOF–TiO2 composites with excellent photocatalytic properties. However, the photocatalytic performance of such composites has rarely been examined. In this study, a series of TiO2 nanoflowers (NFs) modified with In-based MOFs were prepared via a hydrothermal method using 1,1,2,2-tetra(4-carboxylbiphenyl)ethylene (TCBPE) as the organic ligand. The fabricated TiO2@In–TCBPE (TIT) heterojunctions exhibited enhanced light absorption, charge separation, and electron transfer characteristics owing to the transport of ·O2− free radicals through the charge transfer pathway between heterostructures. Rhodamine B (RhB) was chosen as a typical representative of organic pollutants under simulated sunlight and is used to evaluate the photocatalytic performance of TIT composites. The optimized TIT composite exhibited a strong photocatalytic effect, and the complete degradation of RhB was achieved in 13 min. In addition, the prepared TIT composite demonstrated excellent photocatalytic activity during the degradation of organic pollutants in different aqueous environments (tap water, lake water, and river water). This study provides a reference for the selection of ligands for the subsequent construction of high-performance MOF photocatalysts.
研究领域:
材料科学
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环境科学
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化学
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高影响因子
Small
·
2025
·
IF 12.1
Jian Zhang,Xinpeng Wang,Xiaomeng Guo,Wenhao Sang,Qing He,Wen Zhang
Metal–organic frameworks (MOFs) with unique pore architectures and electron-rich sites exhibit an unprecedented iodine capture property. In this contribution, the crystal-size and pore-size-dependent iodine adsorption behavior in MOFs ranging in crystal size from nanometers to micrometers with mesoporous and microporous structures is reported. Nano-sized MOFs have much higher iodine adsorption capacities and rates than Micro-sized MOFs. The pore diffusion for iodine adsorption in MOFs is the rate-controlling step and small-sized MOFs can provide larger external surface areas for iodine transport into adsorbents. Raman spectra suggest the diffusion of iodine molecules is more restricted than iodide species in micropores, and the iodine concentration gradient is more significant in microporous MOF-74 than in mesoporous PCN-222. Molecular simulation indicates iodine transports from mesopores to micropores, and aggregates in micropore cages and framework walls. The electron-rich O/N sites in MOFs attract iodine strongly and restrict iodine diffusion, while the weak interaction between iodine molecules becomes prominent at a high iodine loading amount and thus increases the iodine diffusivity in MOFs. The above result reveals a strong size dependence in iodine adsorption behaviors sensitive to MOFs' intrinsic crystal size, porosity, and guest–host interactions, and MOFs with smaller crystal sizes and mesoporous construction have better iodine capture performance.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
Journal of Energy Storage
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2023
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IF 9.4
Guijie Yin,Liyuan Zhou,Yang Xiang,Pingping Tan,Xu Li,Hongwei Pan,Shujuan Bao,Yannan Wang,Maowen Xu,Xuan Zhang
As one of the key components in a lithium-ion battery , separator plays an important role in guaranteeing the battery safety in practical application. However, polyolefin-based battery separators are prone to causing safety problems, such as internal short circuit and thermal runaway, due to their poor thermal stability, low melting point and flammable nature. In this work, a unique capsule structure with a zeolitic imidazolate framework-8 (ZIF-8) as the shell and flame retardant (FR) as the core was designed by a one-step in-situ growth method. The porous ZIF-8 shell can successfully prevent the flame retardant, i.e., hexachlorocyclotriphosphazene (HCCP) from decomposing into electrolyte, therefore, retaining the electrochemical performance. When fire accident occurs, the ZIF-8 shell collapses and releases the HCCP before further damage could take place to the battery. The results show that ZIF-8/FR-50@PP keeps 98 % area retention rate at 190 °C, and the self-extinguishing time (SET) is 2 s. The Li//NCM-811 cells based on ZIF-8/FR-50@PP deliver a remarkable discharge capacity of 50 mAh·g −1 even at 10C, and a high capacity retention of 68 % at 1C over 300 cycles. This work provides a new design strategy for high safety and good performance battery.
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Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Xiang Li,Xiaoge Chen,Bo Wang,Gang Yu
The development of engineered nanomaterials has aroused great attention in controlling the existence of toxic micropollutants. However, their performance in complex environmental matrices is frequently neglected. Highly efficient enrichment coupled with synergistic degradation with low concentrations is challenging but significant in practical industrial applications. In this study, a large group of active pharmaceutical compounds (PACs) at environmentally relevant concentrations ∼ μg/L were rapidly extracted in core-shell MIL-100 (Fe), followed by effective degradation during the visible-light photo-Fenton process in situ. Unexpectedly, in natural secondary wastewater, adsorption capacities were inhibited (2–50 % decreased after 60 min), while the degradation kinetics of eight PACs were remarkably promoted (1.42–2.92 times higher). Under neutral pH, the accumulated pharmaceuticals within cages were effectively decomposed by •OH and 1 O 2 , mainly derived from visible-light-induced reduction of Fe (III)-cluster and the generation of ROS. The structural parameters (log K ow ) were closely correlated to the adsorption behavior (R 2 = 0.74), which remarkably facilitated the degradation. The powder was loaded onto the PTFE/ultrafiltration membrane in a flow-through reactor. The targeted PACs were rapidly degraded over the self-cleaning surface under visible light irradiation, implying a promising future for industrial application.
研究领域:
环境科学
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纳米材料科学
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高影响因子
ACS Applied Materials & Interfaces
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2026
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IF 7.8
Peixin Zhang,Luoxing Xiang,Junghye Lee,Zhengkai Chen,Lin Huang,Liang Feng
Developing advanced adsorbents with both high selectivity and low regeneration energy remains a central challenge in realizing energy-efficient CO2 capture technologies. In this work, we report an ultramicroporous metal–organic framework, PCP-IPAN, designed with CO2-philic electrostatic cavities to promote strong yet thermally tunable interactions with CO2 molecules. Notably, the framework exhibits highly temperature-sensitive adsorption profiles, characterized by a sharp reduction in CO2 uptake within a narrow temperature range (273–323 K). This significant thermal sensitivity enables a large working capacity and ensures facile desorption at mild temperatures, which is a key requirement for reducing the energy penalty in pressure- and temperature-swing adsorption (P/TSA) processes. Single-component adsorption measurements reveal that PCP-IPAN-Co achieves high CO2 capacities of 4.60 and 3.32 mmol g–1 at 273 and 298 K (1.0 bar), respectively. Furthermore, it delivers CO2/N2 (15/85) IAST selectivities of 71.6 and 99.3, alongside CO2/CH4 (50/50) IAST selectivities of 39.8 and 19.6 at these temperatures. Dynamic column breakthrough experiments for CO2/N2 and CO2/CH4 binary mixtures confirm the material’s excellent separation selectivity, and vacuum pressure swing adsorption (VPSA) simulations demonstrate its efficient separation energy consumption during cyclic operation. These findings highlight PCP-IPAN as an efficient platform for carbon capture.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xiaoyang Fan,Chao Qu,Ziqian Shi,Jun Tian,Chaoyue Wei,Longyun Lin,Tingting You,Yukun Gao,Penggang Yin
Induced vacancy defects have been strategically employed to enhance the performance of semiconductor substrates for surface-enhanced Raman scattering (SERS) applications such as chemical sensing and biosensing. However, maintaining these induced vacancy defects over prolonged use remains a significant challenge, as they tend to rapidly self-heal when exposed to air. In this study, we demonstrate that chemically induced oxygen vacancy (CIVO) defects can stabilize defect sites in the metal–organic framework (MOF) SERS substrate. Due to steric hindrance and the coordination environment surrounding the CIVO defects, these vacancies remain stable in atmospheric conditions for 100 days, in stark contrast to the short-lived photoinduced defects in conventional metal oxide semiconductors, which typically persist for only a few minutes. More significantly, the CIVO defect MOF substrates present a 3 orders of magnitude detection limit lower than the pristine MOF. Practical applications were tested by the CIVO defect MOF substrates, in which rhodamine 6G and p-aminoazobenzene molecules can be sensitively and quantitatively detected. This strategy of chemically induced stable oxygen vacancy defects exhibits broad applicability and is expected to further enhance the performance of MOF-based SERS substrates.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Hang Cui,Jing Yan,Faguang Ma,Zequan Diao,Ming Yan,Yilin Wu,Jianming Pan
Here, ribavirin (RBV) was introduced into metal organic frameworks (MOFs) in this instance to direct the in situ fabrication of appropriate nanocage structures to facilitate the targeted binding of RBV. Well-designed nano-caged RBV imprinted membranes (NCRIMs) have remarkable antifouling capabilities and can selectively separate RBV from wastewater generated by the RBV production process by constructing imprinting sites inside the molecule. Polydopamine (PDA) is rich in hydrophilic groups (hydroxyl and amino groups) that interact with water molecules via hydrogen bonding, thereby generating a hydrate layer on the membrane surface. The synthesized RBV imprinted sites were homogeneously scattered at the interface and inside of the membrane, resulting in a satisfactory selectivity. Notably, methacrylic acid and acrylamide act as functional monomers that synergistically promote the ability to selectively recognise RBV imprinting sites. It was demonstrated that NCRIMs had favourable rebinding selectivity ( α RBV/ACV = 3.28, α RBV/AZT = 2.48, α RBV/LAM = 3.72) as well as partial selectivity ( β RBV /LAM = 9.48, β RBV/AZT = 8.20, β RBV/ACV = 2.95), indicating the potential of NCRIMs in practical application. What is significant is that the cooperative imprinting and modification methods devised in this study offer directions for the selective isolation of valuable components from complex environments, as well as a reference towards the design of potentially highly resistant membranes.
研究领域:
材料科学
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环境工程
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药物化学
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高影响因子
Chem
·
2026
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IF 19.1
Wen Wang,Xinyuan Zhao,Qi Li,Yue Zhang,Qifan Wang,Yao Xie,Fangyu Ren,Shengli Hou,Bin Zhao
The synthesis of asymmetric carbonates from renewable CO 2 is important for sustainable chemistry but often suffers from low efficiency, harsh reaction conditions, and noble metal catalysts. Achieving this efficient transformation under mild conditions by non-noble metal catalysts remains a great challenge. Herein, a framework {[In 3 ( μ 3 -O)(H 2 O)Cu 4 (CPT) 4 I 2 ]⋅(NO 3 )⋅1.5H 2 O⋅3DMF} n (CuIn-CPT, CPT = 3,5-bis(4′-carboxyphenyl)-1,2,4-triazole) was synthesized, assembled from a [Cu 12 In 18 ] nanocage with multiple Cu I and In III Lewis acid sites, and it exhibits good thermal and chemical stabilities. It achieves up to 98% yield in multicomponent reactions of CO 2 , propargyl alcohols, and primary alcohols without solvent under mild conditions, with a record turnover number of 4,844—ten times higher than top Ag-based catalysts—and excellent recyclability over 10 cycles. Density functional theory (DFT) calculations and mechanistic studies confirm that the synergistic effect between [Cu 4 ] and [In 3 ] clusters enhances catalytic efficiency. This work provides an inspiration for developing efficient non-noble metal heterogeneous catalysts in CO 2 conversion.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Wenxiang Qiu,Jie Yin,Xinyu Liu,Xinmiao Zhang,Xinyu Shi,Chunyan Dai,Naixia Lv,Chao Wang,Hongping Li,Huaming Li
Metal-organic frameworks (MOFs) have attracted significant attention in catalysis due to their permanent porosity and abundance of active sites. However, mass transfer limitations and low active site utilization in heterogeneous reactions have hindered the efficient production of active oxygen species in catalytic processes. Fortunately, MOF-based porous ionic liquids integrate the catalytic activity of solid catalysis and fluidity of ionic liquids. Herein, we synthesized UiO-66-based porous ionic liquids (PIL-UiO-66) for catalytic oxidative desulfurization. The cavity of the UiO-66 moiety has been confirmed to be empty through gas uptake studies and molecular dynamics simulations. Due to the imidazolium-based ionic liquid with superb mass transfer accelerating production of active oxygen species, PIL-UiO-66 demonstrated an enhanced desulfurization efficiency (98.3%) than UiO-66 (33.1%). Ultimately, the oxidation mechanism was revealed by the experimental results along with the theoretical calculations the oxidation mechanism. These findings provide an effective approach to developing MOFs-based PILs as catalysis.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Peng Yan,Zhisheng Chen,Xiang Li,Fenglan Liang,Yan Tan,Yidong Lin,Keqi Yang,Chuxuan Xiao,Jiahao Wu,Deyun Ma
By introducing functional groups into the isophthalate ligand to decorate the pore of the MOFs, gas adsorption and separation performance can be tunable. In this paper, two isostructural 2D Co-MOFs, [Co(5-MIA)(bpy)]·H 2 O ( 1 ) and [Co(5-EIA)(bpy)]·H 2 O ( 2 ) (5-H 2 MIA = 5-methoxyl-isophthalic acid; 5-H 2 EIA = 5-ethyoxyl-isophthalic acid; bpy = 4,4′-bipyridine), with different functionalized pore surfaces and channel sizes were designed and constructed. The structures and performance of the two Co-MOFs were analyzed by SCXRD, PXRD, IR, TGA, and gas sorption (CO 2 , C 2 H 2 , CH 4 , CO, and N 2 ). Attributed to the methoxyl of isophthalate skeleton, 1a (activated 1 ) shows enhanced CO 2 uptake over other gases. In spite of decreased pore sizes (3.49 Å) compared with 2a (4.38 Å), the CO 2 uptake of 1a (43.41 cm 3 g −1 ) is larger than that of 2a (22.39 cm 3 g −1 ) at 298 K and 100 kPa. Compound 1 incorporates methoxyl groups into the narrow channel, and exhibits the cooperative effect of CO 2 -preferential due to adsorbent-adsorbate coactions and size sieving. GCMC simulation has been used to explore the adsorption coactions of CO 2 and 1 , and the results confirmed that the methoxyl groups in the channel are the main binding sites of CO 2 . At ambient temperature and 100 kPa, the IAST selectivities of CO 2 /C 2 H 2 (1:1), CO 2 /CH 4 (1:1), C 2 H 2 /CH 4 (1:1), CO 2 /CO (1:2) and CO 2 /N 2 (15:85) on 1a were 2.6, 39.3, 13.3, 282 and 1433, respectively. The easy activation and regeneration, excellent thermal and humidity stability, and good reusability, make 1 a hopeful adsorbent for adsorption and separation of CO 2 .
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