APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Qiaoqiao Mu,Wei Zhu,Xian Li,Chufeng Zhang,Yanhui Su,Yuebin Lian,Pengwei Qi,Zhao Deng,Duo Zhang,Shuao Wang,Xing Zhu,Yang Peng
In this work, composite thin films comprising the 2D/2D MOF/rGO heterostructures assembled via Coulomb interaction are employed as the cocatalyst for photocatalytic CO 2 reduction for the first time. The electrostatic charge transfer and the strong π-π interaction induced in the heterostructure effectively modulate the electronic structure of the metal centers in the conductive 2D MOF (Ni 3 HITP 2 ), evidenced by Zeta Potentials, HR-TEM, XPS and XANES. The best thin-film catalyst with an optimal MOF/rGO ratio demonstrates a high CO evolution rate of 3.8 × 10 4 μmol h −1 g film −1 (0.46 min −1 in TOF) and a good selectivity of 91.74%, synergically contributed by the improved photoelectron harvesting on the rGO scaffold, the efficient charge transportation/transfer within the conductive and intimate 2D heterostructure, the coherent energy flow owing to aligned energy levels, and the enriched electron density at the isolated Ni-N 4 sites boosted by electrostatic charge transfer.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Xuebin Hou,Sarah Louise Stanley,Min Zhao,Jin Zhang,Huimin Zhou,Yibing Cai,Fenglin Huang,Qufu Wei
As the most widely used metal oxide catalysts in photocatalytic degradation, the fast recombination of charge carriers limits the photocatalytic performance of multiform TiO 2 , resulting from its direct-band-gap property. In the present work, we designed C-doped coupled TiO 2 /ZnO nanofibrous membrane based on the derivation of ZnO from the metal organic framework (MOF). The morphology and catalytic properties of the composite membrane could be manipulated by the growth of ZIF-8 crystals. Compared to pristine TiO 2 nanofibers (11.4341 m 2 g −1 ), the composite membrane with an optimized ZnO cubes exhibited larger specific surface area (30.2475 m 2 g −1 ) after introducing ZnO cubes. Furthermore, the crossed-network connection between TiO 2 and ZnO cubes is propitious to increase the synergy of the heterojunction , subsequently effectively inhibiting the recombination of photogenetrated holes and electrons. Benefitting from the trinomial synergistic effect of carbon doping, ZnO and TiO 2 , the as-designed composite membrane exhibited excellent photocatalytic performance to Rhodamine compared to pure TiO 2 nanofibers. This study not only presents the strategy of preparing a C-doped coupled TiO 2 /ZnO composites with crossed network connection for effective photocatalysis , but also exploit the application of MOFs.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Haiyang Zhang,Junchuan Wang,Ying Sun,Xueqin Zhang,Hong Yang,Baoping Lin
The exploration of an inexpensive, low-energy consumption and environmentally friendly preparation process to synthesize high capacitance performance MOF-based electrode materials is an important prerequisite for their commercialization. We propose a non-calcined strategy to synthesize nanowire microsphere shaped Co-BTC (CBNWM). Making MOF into one-dimensional nanowire structure can effectively increase its active sites and the ion transfer rate. After the MOF nanowires are entangle and reunite into microspheres, their mechanical property and chemical stability are improved. Therefore, compared with Co-BTC crystal (CBC), the electrochemical properties of CBNWM have been significantly improved. The specific capacity of CBNWM reaches 1020 F g −1 at 5 mV s −1 or 657 F g −1 at 0.5 A g −1 with the capacity remains 81.4% after 3000 cycles. Subsequently, a flexible asymmetric device of CBNWM//AC was fabricated, whose maximum energy density can achieve 34.4 W h kg −1 with the related power density of 375.3 W kg −1 .
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Fei Guo,Dongsheng Li,Rui Ding,Jiaming Gao,Xuehua Ruan,Xiaobin Jiang,Gaohong He,Wu Xiao
Two-dimensional nanomaterials have the characteristics of high aspect ratio and high space utilization, which has huge potential advantages in gas separation. In this work, g-C 3 N 4 two-dimensional nanosheets with sieving pore structure were selected as templates and combined with ZIF-90 to construct a 0-dimensional/2-dimensional composite material ZIF-90@C 3 N 4 (ZCN). The complete two-dimensional g-C 3 N 4 nanosheets were stripped under acid etching conditions at 25 °C. ZIF-90 was distributed in an orderly manner on the two-dimensional nanosheets, and the nanosheets were spread out due to the growth of ZIF-90 to provide more free volume. The gas permeation experiment proved that the ZCN has a better CO 2 /N 2 separation performance. The ZCN/Pebax mixed matrix membrane (MMM) with the optimized 8.0 wt% ZCN loading showed an improved CO 2 permeability of 110.5 Barrer and a CO 2 /N 2 selectivity of 84.4, surpassing the Robeson upper bound (2008). The results demonstrated that the designed composite filler with 2D nanosheets is an effective strategy to enhance gas separation performance of MMMs and verified the application potential in gas purification industry.
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高影响因子
Molecular Catalysis
·
2020
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IF 3.687
Haijun Pan,Yuanyuan Peng,Xinhuan Lu,Jie He,Lin He,Chenlong Wang,Fanfan Yue,Haifu Zhang,Dan Zhou,Qinghua Xia
1,3,5-benzenetricarboxylate (BTC) and 4,4′-bipyridine (BIPY) are employed in the synthesis of dual ligands Ni-MOFs. The magnetic Ni@CN nanocatalyst is prepared by direct pyrolysis of Ni-MOFs in N 2 atmosphere, which exhibited excellent activity in selective hydrogenation of nitrobenzene (NB) to aniline (AN) at 60 °C, 2.0 MPa H 2 . The conversion of NB can reach 99.1 mol%, and the selectivity of AN is over 99 %. A series of characterizations are obtained by XRD, Raman, XPS, SEM, TEM, TPR and TGA. It is found that the synergic effect of Ni species and N contributes to the increase of catalytic activity of the catalyst. Cycling tests proved that the prepared catalyst could be reused ten times without a visible reduction in catalytic activity of hydrogenation. The excellent stability and activity of Ni@CN nanocatalyst could be assigned to the porosity of carbon material doped with nitrogen, derived from dual ligands Ni-MOFs.
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高影响因子
Nanoscale Advances
·
2022
·Vol. 4
·期 9
·2171-2179
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IF 5.598
Dawei Xu,Xuhui Li,Tingting Zheng,Ruixue Zhao,Pengyu Zhang,Kai Li,Zhongfeng Li,Lirong Zheng,Xia Zuo
Here, a series of Fe/N/C catalysts with different proportions and pyrolysis temperatures are prepared by co-pyrolysis of melamine with a γ-cyclodextrin metal–organic framework (γ-CD-MOF) containing iron(II) phthalocyanine (FePc). Due to the restriction effect of the host and guest at the molecular level, γ-CD-MOF can effectively avoid the π–π stacking of FePc and restrain the agglomeration of Fe atoms during pyrolysis. The phases and structures of the catalysts are characterized, which proves that the obtained catalyst has a three-dimensional porous and internal cavity structure with abundant surface area (1055.317 m2 g−1) and Fe is atomically dispersed in nitrogen-doped carbon. The onset potential (0.988 V vs. RHE) and half-wave potential (0.846 V vs. RHE) of FePc@CD/M (1 : 20)-1000 are superior to those of a commercial 20% Pt/C catalyst. FePc@CD/M (1 : 20)-1000 also exhibits an approximately four-electron (3.84) transfer process, good stability and excellent methanol tolerance.
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 5
·1-13
·
IF 5.3
Cao Xiaodong,Zhang Chenlu,Xu Yunan,Wang Wei,Hu Huiying,Chen Keji,Yang Jing,He Shudong,Sun Hanju,Ye Yongkang
An electrochemical biosensor using gold nanoparticles (AuNPs)-doped bimetallic-organic framework (BMOF) with enhanced peroxidase-like activity was constructed to detect Salmonella Typhimurium ( S. typhimurium ). The BMOF of CuZr-MOF was synthesized via a two-step method and used as carrier to in situ immobilize AuNPs. Due to the stability of Zr-MOF, the good electrocatalytic ability of Cu (II), and the synergetic effects of AuNPs, Cu (II) and Zr (IV), the prepared AuNPs@CuZr-MOF nanozyme showed improved stability and catalytic activity to H 2 O 2 oxidation. The oxidation reaction was found to be a surface-controlled process of electron transfer and a pH-dependent electron transfer process of oxidation reaction involving two electrons. Further, AuNPs@CuZr-MOF was biofunctionalized with signal DNA probe, forming sDNA-AuNPs@CuZr-MOF nanotags. The biosensing platform was constructed on a glassy carbon electrode modified sequentially with electrodeposited AuNPs, capture DNA probe (cDNA), and BSA. Finally, a sandwich-type detection structure was formed by hybridization reactions between cDNA and target invA gene of S. typhimurium , as well as between invA gene and the sDNA of sDNA@AuNPs@CuZr-MOF nanotags. Under optimized experimental conditions, the biosensor achieved a linear range of 1 × 10 −16 to 1 × 10 −8 mol L −1 for the target invA gene with a detection limit (LOD) of 6.2 × 10 −17 mol L −1 using differential pulse voltammetry measurement (DPV). It was successfully applied to the direct and quantitative detection of invA gene segments in total DNA extracts of S. typhimurium , showing a linear range from 3.5 to 3.5 × 10 6 CFU mL −1 and a LOD of 0.82 CFU mL −1 . The fabricated biosensor exhibited good selectivity, reproducibility, and storage stability, enabling its use for the detection of invA gene segments in contaminated milk, with recoveries between 95.9% and 103.1%. Graphical
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Ziyu Tang,Chuanlin Mou,Yadong Li,Shihao Chen,Xianmin Yang,Xu Ding,Hongbo Deng,Linyuan Wang
Here, we report a controllable strategy for fabricating monodispersed microspheres composed of poly(butyl methacrylate) (BMA) and silane-modified Cu/Ni-embedded metal-organic framework (MOF)-TiO₂ composites (denoted as BMA@Cu/Ni@MOF-TiO₂ microsphere) for efficient photocatalytic degradation. Monodispersed oil-in-water (O/W) emulsion templates are prepared by a microfluidic device, which contain silane-modified Cu/Ni@MOF-TiO2 in oil phase. Utilizing benzildimethyl ketal (BDK) as a photoinitiator, porous microspheres can be obtained through a straightforward photopolymerization process initiated by ultraviolet light. When the concentration of the surfactant polyglycerol polyricinoleate (PGPR 90) is 14% (w/v) and the crosslinker trimethylolpropane trimethacrylate (TMPTMA) is 12% (w/v), the BMA@Cu/Ni@MOF-TiO2 microspheres have good monodispersity, and the average diameter is 180.7 μm and coefficient of variation (CV) is 3.64%. When silane-modified Cu/Ni@MOF-TiO2 loading is 0.4% (w/v), the removal rate to methylene blue (MB) is up to 96.2% in 20 min, which is higher than that of powdered (86.6%). Under the optimal conditions, the removal rate of methylene blue reached 99.3% within 50 minutes. Moreover, after 5 cycles of testing, the degradation efficiency remained above 97.94%,, which strongly demonstrated the reusability of BMA@Cu/Ni@MOF-TiO2 microspheres. The photocatalytic mechanism involves the generation of electron-hole pairs in Cu/Ni@MOF-TiO2 under light irradiation, which react with O2 to produce reactive oxygen species (ROS) to degrad MB. The characterization results of XPS, and FTIR show that the silane-modified Cu/Ni@MOF-TiO2 is successfully loaded into the microspheres. BMA@Cu/Ni@MOF-TiO2 microspheres have a specific surface area of 5.962 m2/g and a specific volume of 2.491 cm3/g, providing sufficient diffusion channels and active sites for MB dyes. Therefore, BMA@Cu/Ni@MOF-TiO2 microspheres have excellent recyclability, high stability and attractive photocatalytic degradation efficiency, and show potential application prospects in the future treatment of dye wastewater.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Wenting Li,Wei Kang,Chengan Ye,Nina Wu,Feihong Wang,Huan Pang
Excessive discharge of uranyl ion (U(VI)-containing) wastewater poses significant environmental and human health risks due to radiological contamination. In this study, a metal–organic framework (MOF) exhibiting aerogel-like properties was synthesized by combining UiO-66-NH 2 with MXene through a freeze-drying process. The research focused on the removal of U(VI) from aqueous solutions with this aerogel material. The adsorption isotherm was consistent with the Langmuir model, and the maximum adsorption capacity was determined to be 229.1 mg∙g −1 . The aerogel-like MOF possesses a mesoporous structure, enhancing its U(VI) adsorption efficiency while enabling easy separation and maintaining structural integrity afterward. In cyclic adsorption–desorption experiments conducted over five cycles, the UiO-66-NH 2 /MXene adsorbent demonstrated a U(VI) removal efficiency exceeding 96 %. Overall, the aerogel-like MOF demonstrates outstanding U(VI) adsorption capacity and shows promise as an effective capacitive deionization (CDI) electrode for mitigating radiological contamination.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xin Li,Xue He,Peigang Han,Pinyi Zhao,Xin Yang,Fangxun Liu,Yuxin Zhao,Tong Zhang,Genggeng Zhang,Zheng Zhang,Yuwen Wang,Wei Liu,Huan Wang
In this work, we designed and synthesized a novel MOF derived cobalt-nitrogen co-doped polyhedral carbon @ platinum nanoparticle composites (Co-N/MDPC@PtNPs) to conduct electrochemical biosensing for DNA damage marker 8-Hydroxy-2’-deoxyguanosine (8-OH-dG). Co-N/MDPC@PtNPs composite was simple to prepare and doped with various elements to enhance its catalytic performance synergistically. In this work, Co-MOF was used as a substrate material, while dopamine as a carbon source, nitrogen source and bridging agent, and wrapped on the surface of MOF by self-polymerization. Platinum ions were connected to the surface of Co-MOF by the interaction of platinum ions with polydopamine. Platinum nanoparticles were obtained using ascorbic acid as a weak reducing agent. Through high temperature calcination, Co-MOF carbonization, cobalt doping and nitrogen doping can be achieved in one step. Finally, the final material - Co-N/MDPC@PtNPs was obtained by hydrochloric acid etching. The Co-N/MDPC@PtNPs-1 shows excellent performance in the detection of 8-OH-dG. The low detection limit is 0.234 µM, the wide linear range is 0.52 µM~159.02 µM, and the sensitivity is 0.346 µA/µM. The material shows good repeatability, selectivity and stability, realizing the detection of 8-OH-dG in actual urine samples and actual damaged DNA samples, providing a new method to verify the mechanism of DNA damage. It has great significance in the field of biomedicine.
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 5
·1-12
·
IF 5.3
Li Na,Guo Yiqun,Wu Mengmeng,Wang Aiying,Guo Yuna,Li Yuancheng
A highly specific and ultrasensitive electrochemical immunosensor for malachite green (MG) detection in complex food matrices is presented. The sensor was constructed through a stepwise assembly process incorporating gold nanoparticles, antibodies, and metal–organic framework (MOF)-derived Pd/CuO@NiO nanocomposites. Its structure and electrochemical performance were thoroughly validated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Key detection parameters, including pH and nanocomposite concentration, were systematically optimized to maximize sensor performance. The sensor demonstrated a broad linear detection range (10 −4 to 100 ng/mL) and an ultralow detection limit (42 pg/L). Specificity tests confirmed the immunosensor’s ability to selectively detect MG without interference from structurally similar compounds such as crystal violet, nitrofuran drugs, and chloramphenicol. Its practical applicability was verified using pretreated freshwater fish samples spiked with MG, yielding recoveries of 95%–105%. Furthermore, the results showed strong agreement with those of the conventional enzyme-linked immunosorbent assays (ELISA) method, with minimal difference ratios observed. These findings establish the immunosensor as a reliable, accurate, and rapid tool for detecting MG in food safety applications. Looking ahead, the platform’s modular design and versatility provide opportunities to extend its application to other harmful contaminants in food and environmental monitoring, contributing to broader advancements in public health and safety. Graphical abstract
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DOI
PubMed
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2025
·
IF 3.1
Li Kaiqian,Zhang Xupeng,Li Xianghong,Chang Qiaowen,Deng Shuduan,Zhu Gang
Introducing novel bimetallic metal–organic frameworks (Cu/Zr-MOF) into wood cellulose scaffolds via an in situ growth strategy represents an effective approach to enhance the fire retardancy of wooden products. This work evaluates the effects of Cu/Zr-MOF loading content embedded in wood composite on the MOF morphology and flame retardancy of natural wood (NW). We discovered that MOF loading has a significant impact on the morphology of Cu/Zr-MOF. Specifically, with an increase in the amount of MOF precursors, the morphological transformation is from spherical to regular octahedra. Furthermore, the incorporation of high MOF loading remarkably enhanced the thermal stability at the early stage and exhibited significantly improved residual content. With 24 mass% loading of Cu/Zr bimetallic MOF, the highly flame-retardant wood composite (Cu-U-W-3) was obtained. Compared to pure NW, the peak heat release rate (pHRR) and total heat release (THR) were reduced to 25.25 W g −1 and 5.0 kJ g −1 , respectively. The limiting oxygen index (LOI) of the treated sample reached 24.81%, showing outstanding self-extinguishing ability. According to the char residue analysis, it was found that Cu-Zr bimetallic MOF anchored on the cell wall exhibited catalytic carbon-forming effect, thereby facilitating the generation of high-quality residual char. The enhanced fire safety of natural wood can be attributed to the oxygen barrier and the reduced heat transfer characteristics of the dense carbon layer. This work presents a novel methodology for the fabrication of bimetallic MOF hybrid flame retardants, with the objective of enhancing the flame retardancy of wooden products.
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高影响因子
危险品化学品经营许可证（带存储）