MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Junjie Qi,Wenhui Hao,Jingkun Li,Yuqi Wan,Guoyong Jiang,Yukihiro Ozaki,Fuwei Pi
Phoxim is a broad-spectrum organophosphorus pesticide widely used in the world; however, its neurotoxicity and potential risk pose a significant threat to human health and ecosystems. To address this issue, based on the same metal clusters and similar topologies, a MOF-on-MOF composite strategy, i.e., PCN222(Fe)@NU-1000, was developed for rapid evaluation of phoxim via ratiometric fluorescence and colorimetric dual-signal output. Herein, the inner core, PCN222(Fe), imparts peroxidase-like catalytic activity enabling colorimetric detection based on the 3,3′,5,5′-tetramethylbenzidine (TMB) and the solution decolourisation caused by acetylcholinesterase (AChE) products, while the outer shell, NU-1000, provides a strong fluorescence emission at 461 nm. This core-shell structure also facilitates fluorescence resonance energy transfer (FRET), whereby phoxim selectively quenches the fluorescence of NU-1000 without affecting PCN222(Fe), enabling ratiometric fluorescence sensing. This integrated dual-signal system-comprising ratiometric fluorescence and enzyme-mimetic colorimetry-ensures signal cross-verification and improved detection accuracy. The fluorescence mode exhibits a quantification range of 5.0 ng/mL to 4.0 μg/mL with a detection limit of 4.0 ng/mL, while the colorimetric mode shows a linear range from 2.5 ng/mL to 25.0 ng/mL and a detection limit of 1.76 ng/mL. Furthermore, the method accurately evaluates phoxim levels in fruits and vegetables such as apples and celery, achieving recoveries ranging from 95 % to 115 % and a relative standard deviation (RSD) of less than 9 %. This MOF-on-MOF dual-signal sensing strategy is designed to be simple, user-friendly, and highly reliable, providing significant value for the development of rapid and sensitive approaches in food and environmental science.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yushi Han,Qin Yin,Shuo Geng
The development of the liquor industry urgently needs to solve the problem of wastewater treatment. The electrochemical oxidation method, with its advantages of high efficiency and environmental friendliness, has surpassed traditional processes. The low electro-oxidation potential of organic alcohols in wastewater (significantly lower than the oxygen evolution reaction, OER) endows it with dual value: it can replace the anode OER while simultaneously achieving pollutant degradation and driving the hydrogen evolution reaction (HER) at the cathode, achieving the synergy of “anode pollution control and cathode hydrogen production”. Based on this, this study constructed a Fe-NiOOH/NiMo/NF heterojunction catalyst, which, through the synergy of the efficient alcohol degradation ability of Fe-NiOOH and the excellent hydrogen evolution performance of NiMo, established a stable coupling system for wastewater degradation and hydrogen evolution at high current densities. Experiments confirmed that: Experimentally, the Fe-NiOOH/NiMo/NF anode delivers 200 mA cm −2 at 1.434 V vs. RHE; the NiMo/NF cathode reaches 20 mA cm −2 at an overpotential of 88 mV; and the full cell (Fe-NiOOH/NiMo/NF=|NiMo/NF) sustains 100 mA cm −2 for 100 h with only a 30 mV rise in voltage. Compared with the high-purity alcohol-based OER replacement scheme, using low-cost liquor wastewater as the anode reactant significantly reduces the cost of hydrogen production. The stable operation of this synergy system at high current densities provides a reliable technical path for the industrialized wastewater degradation and hydrogen production.
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高影响因子
APPLIED CATALYSIS A-GENERAL
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2025
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IF 4.8
Hongying Sha,Yuxuan Feng,Jingbo Mao,Hui Lv,Jinxia Zhou
The hydrodeoxygenation of lignin-derived syringol to phenol faces challenges in selectively cleaving C Aryl –O bonds while maintaining aromatic ring and a phenolic -OH group integrity. Herein, we developed a trimetallic CoFeAg/SiO 2 catalyst that achieves 100 % syringol conversion and 52.4 % phenol selectivity, surpassing bimetallic CoAg/SiO 2 (42.2 mol%) and monometallic Co/SiO 2 (7.6 mol%) catalysts. As promoters, Ag facilitates the low-temperature reduction of Co 3 O 4 to CoO and further to metallic Co, while Fe prevents excessive reduction of CoO to metallic Co. Through the synergistic effects of Fe and Ag on Co, the CoFeAg/SiO 2 catalyst undergoes in situ reduction under reaction conditions (1 MPa H 2 , 330 °C), forming a polycrystalline CoO-Co structure with abundant oxygen vacancy (O ᴠ ) and Lewis acid sites. The CoO-Co-O v active sites facilitate heterolytic H 2 cleavage while preferentially adsorbing and activating oxygen-containing functional groups over the aromatic ring of syringol. This dual functionality selectively promotes C Aryl –O bond dissociation while suppressing undesired ring hydrogenation, providing an effective catalyst design strategy for sustainable phenol production from biomass-derived syringol.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Shangsong Han,Yong Wang,Binhong Gan,Jun Cai,Siyi Jiang,Cuiyu Huang,Shanshan Li
MIL-53(Fe), as a typical metal–organic framework (MOFs) material, has shown broad application prospects in the field of membrane separation technology due to its advantages such as high specific surface area and good chemical stability. However, few studies have specifically applied it to the preparation of oil–water separation membranes. Therefore, this study innovatively proposed a self-assembly strategy. By constructing a MOFs composite coating covering the membrane surface and a comprehensive metal polyphenol network (MPN), this approach was designed to form an efficient, comprehensive oil-rejection system while significantly enhancing pure water flux. Then, through a series of characterizations and performance tests, the results showed that the prepared composite membrane exhibited excellent oil–water separation performance: pure water flux was as high as 3641.21 L m −2 h −1 , and at the same time, the rejection rate of oil-in-water emulsion was stably maintained at more than 99.58%. Therefore, this study not only successfully verified the great potential of MIL-53(Fe)-based composite membranes in the field of efficient oil–water separation, providing a new theoretical basis and feasible technical path for its design, but also further expanded the practical application prospects of MOFs materials in the treatment of oily wastewater, opening up new ideas for the development of the next generation of high-performance separation membranes.
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高影响因子
CHEMPHYSCHEM
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2025
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IF 2.2
Li Ma,Wei-Ming Yang,Lin Xue,Jie Zhang,Ke-Xin Lin,Pei-Jian Chen,Xiang Zhang,Hai-Shun Liu
Graphical The co-catalysis of iron-nickel bimetals can not only achieve the complete degradation of organic pollutants but also continue to be recycled. The introduction of Ni enhances the reducibility of the 3D Fe 50 Ni 50 catalyst surface, promotes electron transfer, enriches the surface with Fe (II) during degradation, maintains activity, and provides a self-healing effect. Advanced oxidation processes offer a potent, eco-friendly solution for degrading organic wastewater. Creating high-activity and stability catalysts is crucial to addressing water pollution concerns. Nevertheless, due to constraints in their preparation, prevalent catalysts often lack satisfactory cyclic stability and pose challenges in recovery. This research introduces an innovative catalyst, the 3D printed Fe-Ni porous framework (3D Fe 50 Ni 50 ), characterized by its high activity, robust stability, and straightforward recovery process. The catalytic performance of 3D Fe 50 Ni 50 is attributed to the synergistic effects of its bimetallic constituents and its distinct porous architecture. Under optimal conditions, the kinetic reaction constant reaches 1.56 min −1 . It represents a 26-fold increase over commercially available Fenton's reagent ZVI powder. And the Fe 50 Ni 50 catalyst can be employed cyclically up to 132 times, maintaining a degradation efficiency of over 90% relative to its initial performance. The findings of this article suggest that incorporating Ni augments the catalyst surface's reducibility, facilitating electron transfer. This bestows the catalyst with a nice self-healing ability, ensuring sustained degradation. This investigation paves the way for the design of catalysts with heightened activity and stability and presents promising applications in wastewater treatment.
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PubMed
高影响因子
Nature Energy
·
2021
·Vol. 6
·期 6
·614-623
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IF 60.858
Gao Ruijie,Wang Jian,Huang Zhen-Feng,Zhang Rongrong,Wang Wei,Pan Lun,Zhang Junfeng,Zhu Weikang,Zhang Xiangwen,Shi Chengxiang,Lim Jongwoo,Zou Ji-Jun
Platinum is the archetypal electrocatalyst for oxygen reduction—a key reaction in fuel cells and zinc–air batteries. Although dispersing platinum as single atoms on a support is a promising way to minimize the amount required, catalytic activity and selectivity are often low due to unfavourable O 2 adsorption. Here we load platinum onto α-Fe 2 O 3 to construct a highly active and stable catalyst with dispersed Pt–Fe pair sites. We propose that the Pt–Fe pair sites have partially occupied orbitals driven by strong electronic coupling, and can cooperatively adsorb O 2 and dissociate the O=O bond, whereas OH* can desorb from the platinum site. In alkaline conditions, the catalyst exhibits onset and half-wave potentials of 1.15 V and 1.05 V (versus the reversible hydrogen electrode), respectively, mass activity of 14.9 A mg −1 Pt (at 0.95 V) and negligible activity decay after 50,000 cycles. It also shows better performance than 20% Pt/C in a zinc–air battery and H 2 –O 2 fuel cell in terms of specific energy density and platinum utilization efficiency.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Guanhong Liu,Rongze Tang,Congcong Wang,Dehong Yu,Zhenxin Wang,Haochen Yang,Jia Wei,Shunhua Zhu,Fenglei Gao,Feng Yuan,Bin Pan
Cuproptosis and ferroptosis are difficult to synergize in tumor suppression due to their spatiotemporal asynchrony and mechanistic dispersion. Therefore, we proposed a new paradigm of Ferroptosis-Cuproptosis self-recycling. An iron‑sulfur cluster (Fe-S) metabolic collapse was constructed by hyaluronic acid (HA)-functionalized bimetallic nano-enzymes (HA@CuCo-NC) to initiate this tumoricidal mechanism. HA@CuCo-NC specifically accumulates in osteosarcoma cells through HA-mediated targeting. The multi-enzyme activity triggers a surge of reactive oxygen species (ROS) in the tumor microenvironment, which, along with Co 2+ , induces ferroptosis. This leads to severe mitochondrial damage and glutathione (GSH) depletion, which in turn activates the cuproptosis cascade. Cuproptosis causes Fe-S protein degradation and Fe 2+ release into the labile iron pool (LIP) by inhibiting Fe-S cluster formation and dihydrolipoamide acetyltransferase (DLAT) oligomerization. The released Fe 2+ enhances oxidative stress and promotes membrane disassembly via the Fenton reaction. The two act synergistically to form a dynamic self-reinforcing cycle: Ferroptosis-related mitochondrial damage exacerbates the toxicity of Cu 2+ . Cuproptosis-released Fe 2+ further activates ferroptosis. In vivo experiments demonstrated that HA@CuCo-NC significantly inhibited the growth of osteosarcoma in situ without causing systemic toxicity. This research introduces a novel approach to treating solid tumors by reconstructing the metabolic interaction network of copper and iron.
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 10
·1-13
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IF 5.3
Meng Dongling,Chen Zhiyan,Chen Zhibin,Cen Junrao,Li Jitao,Yang Yaling
Iron-cerium co-doped carbon dots (Fe,Ce-CDs) were synthesized by one-step hydrothermal method using tartaric acid and L-tryptophan as ligands. Fe,Ce-CDs shows excellent peroxidase-like (POD) activity and nitrite (NO 2 − ) can promote the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to its blue oxidation product (oxTMB) due to the formation of ∙NO 2 free radical. NO 2 − further react with oxTMB to form a yellow color via diazotization resulting in the absorbance Change at 450 nm. By Fe,Ce-CDs + NO 2 − + TMB + H 2 O 2 and oxTMB + NO 2 − systems, a dual-signal colorimetric nanosensor for NO 2 − detection is developed with lower detection limits (LODs) of 0.272 μg/L and 0.019 mg/L, respectively. The proposed methods were applied to the detection of NO 2 − in tobacco samples with good recovery from 91.20 to 110.61%, achieving similar results and indicating their high accuracy and feasibility. Graphical
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高影响因子
Polymer Chemistry
·
2015
·Vol. 6
·期 26
·4794-4800
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IF 5.52
Hui Zhu,Gaojian Chen,Zhenbiao Zhang,Nianchen Zhou,Weidong Zhang,Xiulin Zhu
Fe(0) powder-catalyzed one-pot reaction was successfully employed to design linear and star polymers in a well-controlled manner by combining ambient temperature living radical polymerization and click chemistry. The polymerization behavior possessed the characteristics of “living”/controlled radical polymerization: the first-order kinetic plots, narrow molecular weight distribution (PDI < 1.4), the linear relationship between molecular weights and the monomer conversions and the successful chain-extension with a NIPAAM monomer. Furthermore, the NMR and MALDI-TOF-MS data indicated that the Fe(0)-catalyzed one-pot strategy is different from our reported Cu(0)-catalyzed one-pot strategies to make the targeted polymers.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Quan Huo,Gongquan Liu,Haihui Sun,Yanfei Fu,Yao Ning,Boyu Zhang,Xubiao Zhang,Jing Gao,Jiarun Miao,Xiaolin Zhang,Suyan Liu
CeO 2 /MIL-101(Fe) catalysts for a photocatalysis-extraction oxidation desulfurization (PEODS) system were designed by introducing different amounts of CeO 2 into MIL-101(Fe). And, the materials were further analyzed via some characterization technologies. Moreover, an optimization system, composed of CeO 2 /MIL-101(Fe), extractant acetonitrile and oxidant H 2 O 2 , was selected to remove dibenzothiophene (DBT) from model oil under visible-light irradiation. Evaluation results illustrated that 90% of DBT in oil phase was able to be transformed within 2 h as the adding amount of CeO 2 , the volume ratio of model oil to acetonitrile and the molar ratio of H 2 O 2 to DBT was 60 mg, 2:1 and 3:1, respectively. Radical scavenger experiments verified that · OH and · O 2 – were main reactive species in the process. The high photocatalytic activity was originated from a synergic effect produced between active sites of CeO 2 and active surface of MIL-101(Fe) and formed heterostructure in the catalyst, which broadened optical response ranges and facilitated photoinduced charge separations and transfers. Additionally, a convinced PEODS mechanism was proposed and rationalized.
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Kaiyu Qi,Zeming Yuan,Yuan Hou,Ruichao Zhao,Bangwen Zhang
MoS 2 nanosheets have been widely explored as LIB anode materials due to higher theoretical capacity and weak interlayer interactions, but limited by their low conductivity and ease of stacking. Herein, we reported a novel Fe doped MoS 2 /reduced graphene oxide (Fe-MoS 2 /rGO) composite as LIB anode material and its one-step synthesis method. The results show that the synthesized Fe-MoS 2 /rGO composite has unique porous heterostructure , where networked Fe-MoS 2 nanosheets of several nm thickness grow upon crumpled rGO sheets with high specific area. Due to the Fe doping as well as the mild synthesis conditions, the resulting Fe-MoS 2 upon rGO sheets has wide interlayer spacing, abundant lattice defects and lower inner resistance. As a result, the Fe-MoS 2 /rGO electrode exhibits significant improvement in electrochemical performance relative to the non-doped MoS 2 /rGO electrode. The reversible capacities of Fe-MoS 2 /rGO electrode reach 1255 mAh/g (2nd circle) and 946 mAh g −1 (100th circle) with a retention of 75.4%. By comparison, the reversible capacities of MoS 2 /rGO electrode are only 654.1 mAh g −1 (2nd circle) and 429 mAh g −1 (100th circle) with a low retention of 64.1%.
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高影响因子
JOURNAL OF CATALYSIS
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2023
·
IF 7.3
Shuhao Li,Feng Wang,Zongli Xie,Derrick Ng,Boxiong Shen
Zeolitic imidazolate framework-8 (ZIF-8) based catalysts are considered as promising candidates for the selective catalytic reduction of NO by CO (CO-SCR) reaction due to their large specific surface area. However, the structure of ZIF-8 will be damaged during the synthesis procedure of the catalyst, leading to a decrease in their physical properties, which in turn affects the catalytic performance of the catalyst. Herein, a CeO 2 -ZIF-8 core-shell structure was synthesized and doped with Fe, resulting in the formation of Fe@CeO 2 -ZIF-8, for CO-SCR reaction. Characterization results show that the Fe@CeO 2 -ZIF-8 core-shell catalyst has better morphology, thermal stability, and higher specific surface area than the FeCe co-impregnated ZIF-8 catalyst (FeCe@ZIF-8 (IM)). Moreover, the reducibility of the reactive Fe species in the Fe@CeO 2 -ZIF-8 core-shell catalyst is also enhanced. As a result, the Fe@CeO 2 -ZIF-8 core-shell catalyst exhibited higher low-temperature CO-SCR catalytic activity with its NO conversion reaching 99% at 250 °C versus the FeCe@ZIF-8 (IM) catalyst (89% at 250 °C). The experimental results were further verified by density functional theory (DFT) calculations including Electron Localization Function (ELF), Valence Charge Density Difference (VCDD), Projected Density of States (PDOS) and Bader charge analyses. The calculation results revealed that the core-shell configured Fe@CeO 2 -ZIF-8 catalyst has a stronger active metal-support charge transfer and better capacity for the adsorption of the reactants. The reaction mechanism over Fe@CeO 2 -ZIF-8 core-shell catalyst was investigated via in situ DRIFTS experiments, and results showed that the nitro compounds and formate species are critical intermediates in this reaction at a higher temperature range (300–350 °C). This work provides a new strategy for the synthesis of ZIF-8 based catalysts with better properties for CO-SCR reaction.
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