Journal of Inorganic and Organometallic Polymers and Materials
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2023
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IF 4
Zhang Xue-Feng,Chang Tian-Long,Guo Na,Jia Guo-Liang,Li Xiao-Bing,Zhao Zhao-Ye,Wang Hui,Wang Jun-Chuan,Wu Xiang-Feng,Pan Cheng-Si,Liu Lei,Yang Lin-Lin
Fe-based MOFs (Fe-MOFs) are excellent photocatalysts and have synergy well with Fenton reagents relative to other MOFs. In this work, a series of uniformly covered NH 2 -Fe-MIL-88B@TpPa-1-COF composites were synthesized using an in-situ anchoring growth strategy, which used F127 as functional molecule to decorate NH 2 -Fe-MIL-88B nanoparticles to eliminate their surface electrostatic repulsion with Tp molecules during the subsequent coating procedure. Meanwhile, the -NH 2 groups in the skeleton of NH 2 -Fe-MIL-88B could also be used as anchors to covalently connect TpPa-1-COF shell and migration channels for effective charge transfer. This uniformly covered core–shell structure would endow these composites with much more contact area and imine bond linkage between the Fe-MOFs core and COFs shell. Compared with the random packing structure, the uniformly covered Fe-MOF@COF-3 composite possessed a higher proportion of Fe 2+ to Fe 3+ . As a result, the optimized Fe-MOF@COF-3 catalyst could achieve the highest photo-Fenton degradation efficiency of 93.9% for tetracycline hydrochloride (TC⋅HCl), which was much higher than 54.8% of pure NH 2 -Fe-MIL-88B. In addition, the uniform TpPa-1-COF shell could further effectively enhance the stability of NH 2 -Fe-MIL-88B by protecting Fe ions from leaching, and the toxicity of the water samples treated with our photo-Fenton degradation process declined obviously. All these merits will endow Fe-MOF@COF-3 photo-Fenton catalyst great potential application value as in the field of environmental governance.
研究领域:
材料科学
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环境科学
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催化
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高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 9
·4976-4982
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IF 7.443
Hao Huang,Xun Feng,Cuicui Du,Siyuan Wu,Wenbo Song
Uniform iron carbide nanoparticles (Fe3C, ∼10 nm), size evolved from nano-scaled Fe-MIL-88b, were one-pot pyrolytically embedded in 3D porous N-rich graphene. Extra ORR catalytic activity with four-electron selectivity was achieved in an alkaline electrolyte. The onset and peak potential were 10 mV and 40 mV more positive, respectively, than commercial Pt/C.
研究领域:
材料科学
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电化学
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纳米技术
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Hao Li,Zhiang Hou,Yao Hu,Jinnan Wang,Aimin Li,Philippe François-Xavier Corvini
Although molecular cocatalysts (MCs) have demonstrated significant application potential for photoelectrochemical (PEC) water splitting, the immobilization and stabilization of them for long-term application remains challenging. Herein, an integrated photoanode (BiVO 4 @NM88B(Fe)/Co 4 O 4 ) is developed by immobilizing Co 4 O 4 cubanes onto NH 2 -MIL-88B(Fe) (NM88B(Fe)) decorated BiVO 4 via site-isolation strategy. The unoccupied coordination sites in NM88B(Fe) covalently bound to both Co 4 O 4 and BiVO 4 , which significantly decreases the interfacial charge transfer resistance of BiVO 4 @NM88B(Fe)/Co 4 O 4 and achieve prolonged stability. More importantly, the oxygen evolution cocatalyst (OEC) NM88B(Fe)/Co 4 O 4 remarkably lowered the energy barrier and thermodynamically favored surface water oxidation. Consequently, the photocurrent density of BiVO 4 @NM88B(Fe)/Co 4 O 4 photoanode achieved up to 5.26 mA·cm −2 at 1.23 V RHE , which is 3.73 times higher than that of bare BiVO 4 . This work presents a site-isolation strategy to overcome molecular catalyst stabilization challenges in PEC systems while offering crucial insights into designing efficient charge transfer channels between OECs and semiconductors for enhanced water splitting performance.
研究领域:
材料科学
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光电化学
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可再生能源
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催化
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纳米材料
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Liangyan Shao,Zongxue Yu,Xiuhui Li,Xuyang Li,Haojie Zeng,Xiaofang Feng
A one-pot strategy for the preparation of NH 2 -MIL-88B(Fe)/CDs composite was successfully developed via a simple solvothermal synthesis method. NH 2 -MIL-88B(Fe)/CDs composites were characterized by XRD, FT-IR, SEM, TEM, XPS, UV–vis DRS, PL, transient photocurrent response and Mott-Schottky plots. The synthesized NH 2 -MIL-88B(Fe)/CDs composites exhibit stronger photocatalytic activity than the original NH 2 -MIL-88B(Fe) in both photoreduction of Cr(VI) and photodegradation of MB. This is mainly because on the one hand, there is an interaction at the interface between CDs and NH 2 -MIL-88B(Fe), and on the other hand, CDs in the composite as local electron acceptors can effectively enhance charge transfer and inhibit electron-hole recombination. The experimental results show that the pH value greatly affects the reduction efficiency of Cr(VI) over photocatalyst, and the addition of hole trapping agent is beneficial to photocatalytic reduction. Moreover, we have proposed the possible photocatalytic mechanism on composites through trapping experiments of active species. Importantly, cycling experiments have also revealed that NH 2 -MIL-88B(Fe)/CDs photocatalysts have good chemical stability and reusability, and have broad industrial application prospects.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Journal of Energy Chemistry
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2022
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IF 13.599
Yibo Zhang,Zhihua Li,Liangjun Gong,Xuyu Wang,Peng Hu,Jun Liu
With the advantages of the multiple oxidation states and highly open crystal structures, vanadium-based composites have been considered as the promising cathode materials for aqueous zinc-ion batteries (ZIBs). However, the inherent inferior electrical conductivity, low specific surface area, and sluggish Zn 2+ diffusion kinetics of the traditional vanadium-based oxides have greatly impeded their development. Herein, a novel hierarchical porous spindle-shaped Ag-V 2 O 5 with unique heterostructures was rationally designed via a simple MOF-assisted synthetic method and applied as stable cathode for aqueous ZIBs. The high specific surface area and hierarchically porous superstructures endowed Ag-V 2 O 5 with sufficient electrochemical active sites and shortened the diffusion pathways of Zn 2+ , which was beneficial to accelerate the reversible transport of Zn 2+ and deliver a high specific capacity (426 mA h g −1 at 0.1 A g −1 and 96.5% capacity retention after 100 cycles). Meanwhile, the self-built-in electric fields at the heterointerface of Ag-V 2 O 5 electrode could strengthen the synergistic coupling interaction between Ag and V 2 O 5 , which can effectively enhance the electric conductivity and maintain the structural integrity, resulting in superb rate capability (326.1 mA h g −1 at 5.0 A g −1 ) and remarkable cycling stability (89.7% capacity retention after 2000 cycles at 5.0 A g −1 ). Moreover, the reversible Zn 2+ storage mechanism was further investigated and elucidated by kinetics analysis and DFT calculations.
研究领域:
材料科学
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电化学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Zhenfei Yang,Longlu Wang,Ming Fang,Xinnian Xia,Yutang Liu
The key to achieve an efficient cooperative photoredox reaction system is to elaborately construct high-efficiency multifunctional photocatalysts with the maximum carrier utilization. Herein, a well-design S-scheme MIL-88B (Fe)/ZIS heterojunction modified with amorphous CoS 1+x cocatalyst (CMZIS) was firstly successfully constructed. The CMZIS heterojunctions show a high H 2 evolution rate of 3164.9 μmol g −1 h −1 coupling with a benzaldehyde generation rate of 3417.8 μmol g −1 h −1 , which are 7.9 and 8.1 times higher than those of pure ZIS. The excellent performance of CMZIS heterojunctions benefits from the synergistic effect of S-Scheme heterojunction and CoS 1+x cocatalysts. This synergy realized the directional transfer and spatial separation of photogenerated carriers in CMZIS, thus inhibiting charge recombination and and maximizing the redox ability of charge carriers. Moreover, CoS 1+x cocatalyst offer more active sites and further enhance the H 2 evolution efficiency. This work will offer fresh insights to the construction and mechanism study of advanced multifunctional photocatalysts for the highly efficient cooperative photoredox reaction system.
研究领域:
材料科学
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催化化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
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IF 6.7
Tingting Zhang,Xing Liu,Yanqiu Jiang,Xiaowei Zheng,Jian Zhang,Yudong Li,Defeng Li,Kaifeng Lin
Photo-Fenton reaction has received increasing attention in removing antibiotics in water. Herein, Fe 2 O 3 -on-ZrO 2 polypods were designed and synthesized via metal organic frameworks (MOFs) derivation strategy combined with reflux heating and baking. The experimental results showed that under Ultraviolet–visible (UV–vis) light irradiation, more than 95 % tetracycline hydrochloride (TC-HCl) was degraded by Fe 2 O 3 -on-ZrO 2 with Fe/Zr mole ratio of 1.3 in 25 min within full pH range. Mainly due to the following points, there were abundant Fe 2 O 3 -on-ZrO 2 heterojunctions, which conduced to transfer photo-induced electrons (e − ) from ZrO 2 to Fe 2 O 3 , thus accelerating the iron cycle. Besides, OH – adsorbed was oxidized to hydroxyl radicals (·OH) by holes (h + ) in the valence band (VB) of ZrO 2 , and ZrO 2 also enhanced the stability of the catalyst and reduced the leaching of iron ions. Finally, the reasonable degradation pathway and degradation mechanism were speculated by high performance liquid chromatography-mass spectrometry (HPLC-MS), electron spin resonance technology (ESR), scanning Kelvin probe (SKP), the conduction band (CB) and VB positions of Fe 2 O 3 -on-ZrO 2 , etc. This work exhibited a new structure and degradation mechanism, which would further encourage researchers to study the rational regulation of materials with special morphology and structure.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
NANOTECHNOLOGY
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2024
·Vol. 35
·期 42
·425702
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IF 2.9
Rui Li,Huilin Hu,Furong Xiong,Xiang Xue,Minqi Wu,Xuan Zuo,Wang Zhang,Xiangliang Pan
Efficient metal–organic frameworks (MOFs) photocatalytic bactericidal catalysts are urgently needed in water purification. Herein, a Fe-MOF (MIL-88B-NH2(V1Fe5) with promoted electron transport was achieved by vanadium (V) ions doping and V/Fe ratio optimization, showing excellent photocatalytic bactericidal activity against E. coli under visible light irradiation (99.92%). The efficient antibacterial mechanism, V as a Ti-like mediator boosting electronic transmission in MIL-88B-NH2(V1Fe5), was revealed by its band structure, transient photocurrent, electrochemical impedance spectroscopy, and scavenger quenching experiments. The enhancement of photocatalytic bactericidal performance of Fe-MOFs by V–ion-doping was confirmed by two other Fe-MOFs, MIL-53-NH2(V1Fe5) and MIL-101-NH2(V1Fe5), with the same metal ions and ligands, both of which have higher performance than the corresponding undoped MOFs. Among them, MIL-88B-NH2(V1Fe5) exhibits the highest photocatalytic bactericidal activity due to its suitable metal clusters ([M(μ3-O)] cluster) and topological structure (three-dimensional rhomboid network structure). This work demonstrated the amplification effect of V ion doping on electron transport in Fe-MOFs 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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光催化
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Qing Jin,Kai Ma,Guilong Gao,Xinyu Zhou,Lijie Xu,Ying Zhang,Jiangtao Shi,Lu Gan
In this study, a series of carbon nanofiber (CNF) based one-dimensional catalysts were prepared by pyrolyzing MIL-88B(Fe) anchored PAN/lignin electrospun nanofibers, which were then employed to activate peroxymonosulfate (PMS) for bisphenol A (BPA) degradation. The results indicated that adjusting the lignin content in nanofiber precursor could engineer the crystalline phase of iron compounds in the catalysts, as well as their catalytic activity and stability. Specifically, the precursor with lower lignin content was converted into Fe 3 O 4 loaded CNF (P2L1-Fe-C), whereas Fe 3 C loaded CNF was obtained (P1L1-Fe-C) by increasing lignin content to 50 wt% in the nanofiber precursor. Having multiple Fe valence states within Fe 3 C which facilitated internal electron transfer, P1L1-Fe-C exhibited high catalytic activity with high stability and low iron ion leaching when activating PMS for BPA degradation. P1L1-Fe-C/PMS system could produce more kinds of active species including hydroxyl radical (•OH) and multiple non-radical species like singlet oxygen ( 1 O 2 ), high-valent iron-oxo species, and electron transfer process. Comparatively, P2L1-Fe-C/PMS system was only able to produce •OH and 1 O 2 . The existence of more BPA degradation pathways resulted in enhanced resistance of P1L1-Fe-C/PMS system towards various environmental interferences. This study inspires a new thinking of developing iron based Fenton-like catalyst with tunable crystalline phases through precursor recipe regulation, achieving both high activity and stability. Download: Download high-res image (225KB) Download: Download full-size image
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高影响因子
RSC Advances
·
2023
·Vol. 13
·期 15
·10135-10143
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IF 3.9
Yangjie Chen,Juan Hao,Zhihang Yin,Qinghui Wang,Youting Zhou,Lingpu Jia,Huiming Li,Wenlong Liao,Kunping Liu
Internal standard molecule 4-mercaptobenzoic acid (4-MBA) embedded Au core-Ag shell nanorods (Au-MBA@Ag NRs) were prepared by a seed-mediated growth method, then loaded on octahedral MIL-88B-NH2 to obtain a novel ratiometric SERS substrate of Au-MBA@Ag NRs/PSS/MIL-88B-NH2 (AMAPM) for detecting rhodamine 6G (R6G) in chili powder. The porous structure and excellent adsorption ability of MIL-88B-NH2, allowed for increased loading of Au-MBA@Ag NRs, thereby shortening the distance between adsorbed R6G and the “hot spot” resulting from local surface plasmon resonance (LSPR) of Au-MBA@Ag NRs. Based on the SERS characteristic peak ratio of R6G to 4-MBA, the ratiometric SERS substrate displayed improved accuracy and excellent performance for R6G detection, with a wide linear range of 5–320 nM and a low detection limit of 2.29 nM as well as fine stability, reproducibility and specificity. The proposed ratiometric SERS substrate offered a simple, fast and sensitive sensing strategy for R6G detection in chili powder, which demonstrated potential applications in food safety and the analysis of trace analytes in complex matrices.
研究领域:
分析化学
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纳米技术
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食品科学
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光谱学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Wenqian Nong,Yinglu Chen,Danyu Lv,Yitao Yan,Xi Zheng,Xianming Shi,Zhen Xu,Weiliang Guan,Jun Wu,Yongguang Guan
Pathogenic bacteria seriously endanger human health. Metal-organic framework (MOF)-enzyme composites are novel antibacterial materials for effective bacterial inactivation. In this study, we develop a MOF-based nanozyme hybrid for synergistic bacterial eradication, which integrates features of bacterial capture, magnetic assembly, lysozyme hydrolysis, and light-triggered thermal generation and carvacrol release. Core-shell nanoparticles (Fe 3 O 4 @ [email protected] 2 -MIL-88B(Fe), FPM; PVP = polyvinylpyrrolidone) are synthesized by loading PVP-modified Fe 3 O 4 to NH 2 -MIL-88B(Fe), and then covalently immobilizing lysozyme onto the FPM surface through enzymatic reaction by microbial transglutaminase. The lysozyme-covered FPM is further employed as a host matrix for loading antibacterial carvacrol to synthesize Fe 3 O 4 @ [email protected] (Fe)–NH-lysozyme/carvacrol (FPMLC) nanozyme hybrid. This FPMLC can capture bacteria by electrostatic attraction and the FPMLC-bacteria composite is then assembled by an extra magnet. The lysozyme layer can degrade peptidoglycan of the bacterial cell wall, and the released carvacrol can disrupt the bacterial cell membrane under near-infrared (NIR) irradiation. Systematic antibacterial results demonstrate that the developed FPMLC nanozyme hybrid at a low dose of 100 μg/mL completely inactivates (100%) both Escherichia coli and Staphylococcus aureus at cell density of 10 6 CFU/mL. This FPMLC exhibits high-efficiency antibacterial efficacy but no significant cytotoxicity in vitro , and therefore provides promising antibacterial applications in biomedical, environmental, and food fields.
研究领域:
材料科学
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纳米技术
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生物医学工程
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微生物学
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药学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2023
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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.
研究领域:
环境科学
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材料科学
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化学
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光催化
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DOI
高影响因子
危险品化学品经营许可证（带存储）