FOOD CHEMISTRY
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2025
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IF 9.8
Jianfang Jiang,Kuaqian Deng,Rui Duan,Cong An,Fanglin Dao,Jiali Huang
Organophosphorus pesticides (OPs) are extensively utilized in agricultural production, but they pose significant threats to environment and organisms. This study aims to develop a novel method for the rapid and efficient detection of OPs. Initially, an iron/manganese zeolitic imidazolate framework (Fe/Mn-ZIF) with excellent oxidase-like activity was synthesised. The catalytic performance was evaluated, and the main factors influencing catalytic activity were investigated. Subsequently, a combined acetylcholinesterase assay was employed to detect three OPs. The specificity and recyclability of Fe/Mn-ZIF were also studied. The proposed colorimetric strategy demonstrated strong linear relationships: 0.1–2 mg/L for trichlorfon, 0.2–14 mg/L for glyphosate, and 0.4–10 mg/L for glufosinate, with the low detection limits of 0.024, 0.080, and 0.121 mg/L (3 S/N) respectively. Good recoveries were observed in real sample detection. This work lays a foundation for enhancing the catalytic performance of Fe/Mn-ZIF, which holds promise for biosensing applications.
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DOI
PubMed
高影响因子
DESALINATION
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2025
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IF 9.8
Zhiqiang Wu,He Ren,Hao Zhou,Jianeng Ji,Haiyun Ding,Chunyan Li,Minjie Shi,Ying Hong,Jun Yang
Prussian Blue analogs (PBAs) have emerged as one of the promising materials for capacitive deionization (CDI) due to their excellent specific capacity and outstanding ion adsorption capability. However, Mn-based hexacyanoferrate Prussian Blue (MnHCF) suffers from insufficient utilization of active sites and poor ion kinetics during the electrochemical process, resulting in weak ion adsorption capacity and easy destruction of its stable structure. In this work, CuMnHCF was synthesized by incorporating Cu into the MnHCF framework via an in situ solvothermal approach. The appropriate introduction of Cu effectively occupied the interstitial sites of the MnHCF structure, optimized its electronic configuration, and successfully activated both the metal–N bonds and the Fe–CN dual redox-active sites within the framework (evidenced by in situ Raman measurements). These merits collectively led to a significant enhancement in the electrosorption capacity of CuMnHCF toward Na ions. The CuMnHCF electrode exhibits excellent cycling stability in aqueous NaCl electrolyte. After 5000 cycles, the specific capacitance decay is minimal, with a capacity retention rate of approximately 61.5% (5 A g −1 ). As applied in electrochemical desalination experiment at a voltage of 1.2 V for 50 cycles, the retention rate of CuMnHCF electrode reached as high as 82.2%. Additionally, it not only exhibits a high salt removal capacity of 58.4 mg g −1 (salt removal rate: 1.95 mg g −1 min −1 ), but also a peak salt removal rate of 15.7 mg g −1 min −1 . As an application extension, the CuMnHCF electrode also shows excellent desalination performance for K + , Ca 2＋ , and Mg 2 + .
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Zhengming He,Cong Li,Jingzhen Su,Kai Zhang,Jiaxue zhu,Ren Cai,Yunshu Zhang,Jieming Yuan,Xiaohong Guan
Iron-based catalysts are generally used to activate oxidizing species, such as hydrogen peroxide by increasing homogeneous active substances like free radicals, to promote the degradation of organic matter. However, less attention has been paid to the reactions on the surface or the generation of heterogeneous metal-oxo species. Herein, oxygen vacancies (Vo) were introduced into Fe oxides by a calcination-induced hetero-atom doping modification. The characteristic peak of the heterogeneous hypervalent iron-oxo [≡Fe IV =O] species in the UV–Vis spectrum at 371 nm was observed. In the context of electrochemical experiment, Vo-rich Mn-Fe 2 O 3 significantly enhanced the electron conduction of sulfamethoxazole and H 2 O 2 , while simultaneously inhibiting the self-decomposition of potassium ferrate (Fe(VI)). Regarding the H 2 O 2 generated during the self-decomposition process of Fe(VI), Vo-rich Mn-Fe 2 O 3 can accelerate the degradation of sulfamethoxazole, increasing the reaction rate to 0.1081 min −1 (with a 30.05 % improvement in removal efficiency). Density functional theory calculations indicate that Vo leads to an enhanced capture of O atoms by the low-coordinated Fe atoms, promoting the anchoring of H 2 O 2 and the formation of the active ≡Fe IV =O with a higher spin state. This work proposes heterogeneous reactive species on the surface of metal oxidase, constructing Vo as the O atom capture sites in iron-based oxides to facilitate the formation of ≡Fe IV =O and the degradation of organic compounds.
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Yuqiu Fan,Dawei Liu,Haipeng Wan,Xingyu Liu,Jun Wang,Kun Xiong
For rapid and efficient removal of tetracycline (TC), a new cobalt (Co) and manganese (Mn) co-doped zinc ferrite (CoMnZFO) photoanode was synthesized in this study. Compared to the pure zinc ferrite (ZFO), CoMnZFO exhibited stronger enhanced light harvesting ability and a narrower band gap. Although there were oxygen vacancies in both CoMnZFO and ZFO lattices, CoMnZFO possessed more double-exchange interaction pathways in comparison with ZFO. Besides the Fe 2 + /Fe 3+ pathway, CoMnZFO also had the Mn 3+ /Mn 4+ pathway, which facilitates the transfer of photogenerated electrons ( e - ) and holes (h + ), thereafter enabling CoMnZFO better photoelectrocatalytic (PEC) activity. Since CoMnZFO had a significantly smaller Helmholtz layer resistance than ZFO, it enhanced TC adsorption onto its surface. Exposed to simulated solar light for 12 min, CoMnZFO was able to make the complete degradation of TC (20 mg/L, 70 mL) when a voltage of 0.2 V was applied, while ZFO only achieved a TC degradation rate of 50.85 ± 5.77 % under the same condition. In addition, CoMnZFO achieved a TC mineralization rate of 41.89 ± 1.72 %, while that of ZFO was 13.87 ± 1.94 %. Furthermore, a quantitative structure-activity relationship (QSAR) method was applied to evaluate the ecotoxicological impact of the degradation products. The results demonstrate that the toxicity and mutagenicity of TC were weakened after experiencing the PEC treatment of CoMnZFO. Overall, this work offers a rapid and efficient way for PEC removal of TC-contaminated wastewater.
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高影响因子
ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Meiqing Yan,Jiapeng Yang,Enrou Mei,Ye He,Zhaoping Chen,Weiwei Huan,Xiaojuan Liang,Weidong Xiang
To address the issues of Pb toxicity and stability in traditional lead halide perovskite materials, this study presented an environmentally benign aqueous-phase synthesis method for the fabrication of a series of high-performance, green-emitting, lead-free organic–inorganic hybrid manganese(II) halide (OIMnHs) materials, (C12H28N)2Mn(1–x)ZnxBr4. Through Zn2+ doping, the optical properties and stability of the materials were significantly enhanced. Notably, (C12H28N)2Mn0.95Zn0.05Br4 exhibited a remarkable photoluminescence quantum yield (PLQY) of 97.2% and narrow-band green emission at 520 nm with a full width at half-maximum (fwhm) of 43 nm. Furthermore, (C12H28N)2Mn0.95Zn0.05Br4@PET composite films, fabricated via a double-layered PET film encapsulation technique, demonstrated exceptional environmental stability, including resistance to air, heat, water, and blue light. Finally, by integrating (C12H28N)2Mn0.95Zn0.05Br4 with commercial K2SiF6:Mn4+ red phosphor, a composite light conversion film was developed, achieving an impressive wide color gamut coverage of 116.73% NTSC 1953 and 86.82% Rec. 2020. Importantly, the aqueous-phase method exhibited excellent scalability, as demonstrated by a successful 20-fold scale-up production without compromising the optical properties or crystal structure of the materials, highlighting its potential for large-scale manufacturing. This study paved the way for the development of high-performance, environmentally friendly, low-cost, and readily scalable lead-free halide materials for wide-color-gamut backlight displays.
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2014
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IF 2.063
Jianrong Li,Jinsheng Chen,Yanke Yu,Chi He
The Fe–Mn–Ce/CP catalyst prepared by the incipient-wetness impregnation method was investigated for elemental mercury (Hg 0 ) removal in simulated coal-fired flue gas . The incorporation of Fe could remarkably enhance the SO 2 -resistance of Fe–Mn–Ce/CP catalyst at low temperature, and the existence of water vapor had negative impact on Hg 0 removal efficiency. More than 95% of Hg 0 could be removed at 100 °C under the conditions of 60 ppm HCl, 3% O 2 ( v/v ), 5% H 2 O ( v/v ) and 400 ppm SO 2 . Hg-TPD results indicated that Hg 0 adsorption amount decreased after the addition of H 2 O or SO 2 . The XPS results revealed that the incorporation of Fe could enhance the contents of high valence Mn x + (i.e., Mn 3+ /Mn 4+ ) and Ce 3+ species in the composite catalysts, which are favorable for the oxidation process of elemental mercury. The surface characteristics were not the primary factor determining the catalytic activity . Overall, the catalytic performance of the Fe–Mn–Ce/CP catalyst was closely related to the Fe 3+ state, high ratios of (Mn 4+ + Mn 3+ )/Mn 2+ and high content of not fully coordinated cerium species.
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DOI
高影响因子
TRIBOLOGY INTERNATIONAL
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2021
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IF 4.872
Wenlong Wang,Qingjian Liu,Daquan Li,Lei Jin,Huaping Xiao
To better understand the properties of Mn-23Cu-6Ni alloy, its tribological behavior and wear mechanism were investigated under various conditions, including dry sliding, polyalphaolefin (PAO) lubrication , and PAO lubrication with molybdenum disulfide (MoS 2 ) additive. The experimental results showed high friction and severe wear when exposed to dry sliding while the running-in process denoted contact under PAO lubrication. MoS 2 nanosheets improved the friction reduction and anti-wear performance of PAO and suppressed the running-in process, rendering the sliding system stable from the beginning. The wear mechanism of the Mn-23Cu-6Ni alloy changed from adhesive wear in dry conditions to abrasive wear when exposed to PAO lubrication with MoS 2 nanosheets .
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Kunli Song,Kaiyu Guo,Yixuan Lv,Dandan Ma,Yonghong Cheng,Jian-Wen Shi
Selective catalytic reduction with ammonia is the mainstream technology of flue gas denitration (de-NOx). The reducibility and acid site are two important factors affecting the de-NOx performance, and effective regulation between them is the key to obtain a highly efficient de-NOx catalyst. Herein, a series of Mn–Fe–BTC with different ratios of Mn and Fe are synthesized, among which 2Mn-1Fe-BTC with 2:1 molar ratio of Mn and Fe has excellent low-temperature (LT) de-NOx performance (above 90% NO conversion between 60 and 270 °C) and good tolerance to H2O and SO2 poisoning (88% NO conversion at 150 °C with 100 ppm of SO2 and/or 6% H2O). It is revealed that the reducibility properties and acid sites of Mn–Fe–BTC can be flexibly tuned by the ratio of Mn and Fe. The difference in electronegativity between Fe and Mn leads to the redistribution of valence electrons, which enables the controllable reducibility of Mn–Fe–BTC. Furthermore, different amounts of Mn and Fe lead to different electron transport, which determines the type and number of acid sites. The synergistic effect of Mn and Fe endows Mn–Fe–BTC with enhanced surface molecular adsorption capacity and enables the catalyst to selectively chemisorb NH3 and NO at different active sites. This research provides guidance for the flexible regulation of reducibility and acid site of LT de-NOx catalyst.
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DOI
高影响因子
Journal of Energy Storage
·
2023
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IF 9.4
Yao Lu,Miaoyan Song,Jieyou Huang,Le Zhang,Binyu Zhao,Wenwei Wu,Xuehang Wu
Charging P2-type Na 0.66 Ni 0.33 Mn 0.67 O 2 (NNM) to a high upper cut-off voltage of 4.3 V (vs. Na + /Na) can yield a competitive discharge voltage (3.6 V-class) and capacity. However, achieving stable cycling for NNM under this condition remains challenging owing to an unfavorable phase transition and a large lattice-volume change. Herein, a dual-site doping strategy is used to simultaneously realize a pinning effect at the Na and transition metal sites. Incorporating pinned K + and Zn 2+ ions considerably enhances the structural stability of NNM, affording a complete single-phase reaction with ultralow strain (only 0.54 % variation in volume) during Na + insertion/extraction. The synergistic contributions of dual-site doping to the enhanced electronic conductivity , lowered Na + migration barrier, and increased Na + diffusion coefficients are confirmed via theoretical calculations. Consequently, the K + /Zn 2+ dual-site-doped Na 0.63 K 0.03 Ni 0.26 Zn 0.07 Mn 0.67 O 2 delivers satisfactory discharge capacities of 118.6 and 63.2 mAh g −1 at 10 and 2000 mA g −1 , respectively, and achieves an excellent capacity retention of 81.2 % after 200 cycles at 500 mA g −1 . This study provides a promising method to strengthen the stability of the Ni − Mn-based layered framework and optimize other high-voltage and high-capacity layered oxide cathode materials .
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2026
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IF 6.2
Zhongliang Gong,Xiaodong Yi,Xi-Gui Gao,Huwenyu Huang,Yu-Xin Ma,Zi-Xuan Liu,Jingmei Zhao,Lijuan Feng,Cheng-Yang Yue
The increasing demands in optoelectronic applications have driven the advancement of organic–inorganic hybrid metal halides (OIHMHs), owing to their exceptional optical transparency and high luminescence performance. In this work, three zero-dimensional OIMH single crystals of (C7H18N2)MBr4 (C7H18N2 = 1-propylpiperazine, M = Cd, Zn, and Mn) were prepared via a facile saturated crystallization method with adjustable luminescence properties. (C7H18N2)MnBr4 displays intensive green light emission with the highest photoluminescence yield (PLQY) of 54.93% originating from the d–d transition of Mn2+. Due to filled d orbital configurations of Zn2+ and Cd2+, (C7H18N2)CdBr4 and (C7H18N2)ZnBr4 exhibited blue light owing to their stronger self-trapped excitons (STEs) recombination. Furthermore, (C7H18N2)CdBr4 and (C7H18N2)ZnBr4 exhibited another red luminescence band after grinding, originating from defect-induced STEs. In addition, due to their excellent PL performance, the white LED fabricated based on (C7H18N2)MnBr4 and (C7H18N2)ZnBr4 has demonstrated a high color rendering index (CRI) of 88.2. This work not only provides a strategy for optimizing the photoluminescence performance by modulating metal ions within the same crystal structure of OIHMHs, but also provides insights into both intrinsic STE emission and the design of high-performance luminescent materials.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Hongchuan Jiang,Xiang Li,Guodong Zhang,Cai Liang
Solar-driven calcium-looping offers a promising pathway for efficient storage and utilization of concentrated solar energy. However, the large-scale application of calcium-based heat carriers is hindered by low solar absorptance, poor sintering resistance, and slow reaction kinetics. Moreover, the energy conversion characteristics and particle behavior under direct irradiation remain poorly understood. In this study, Mn-Zr co-doped CaO composite particles were synthesized via an extrusion-spheronization method, achieving high absorptance, strong sintering resistance, and rapid reaction kinetics. Specifically, the co-doping of Mn and Zr significantly enhances absorptance to 67.7% while effectively reduces cracking. The stable framework of CaMnO 3 and CaZrO 3 maintains abundant mesoporous channels and suppresses sintering. The composite particles exhibit outstanding cycling stability, maintaining an energy storage density of 1148 kJ/kg after 40 cycles with only 22.9% degradation, far outperforming pure CaO materials (64.9% degradation after 20 cycles). Direct irradiation experiments confirm their high solar-thermal conversion efficiency, with particle temperature within the light spot reaching 1600 °C in 3 s. The irradiation-induced particle inhomogeneous sintering mechanism was preliminary proposed. Meanwhile, the effect of non-uniform irradiation on energy storage characteristics and particle behavior is revealed. Non-uniform irradiation led to localized hotspots and increased thermal stress, which aggravated particle breakage and sintering within the light spot.
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高影响因子
Energy & Environmental Materials
·
2026
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IF 14.1
Yuyao Ma,Sidong Zhang,Wei Hu,Wenqing Wei,Yutao Li
Li-rich Mn-based layered oxides are recognized as cathode materials with bright prospects for rechargeable lithium-ion batteries (LIBs), primarily attributed to their low cost, high capacity output, and high operating voltage. However, their practical application is restricted by inadequate initial Coulombic efficiency (ICE) and unstable electrode/electrolyte interfaces, which result in high interfacial impedance, large overpotential, irreversible capacity fading, and inferior cycling stability. In this work, Li 3/8 Sr 7/16 Ta 3/4 Zr 1/4 O 3 (LSTZ), a fast Li + -ion conductor, is introduced as a surface coating. The LSTZ layer effectively suppresses oxygen release and electrolyte corrosion, thereby mitigating structural degradation and voltage decay while improving interfacial stability. Moreover, LSTZ provides fast Li + transport pathways, facilitating Li + diffusion, and reducing polarization, which significantly enhances rate capability. At 1 C and 25 °C, the LSTZ-coated cathode delivers a reversible capacity of 178.5 mAh g −1 with 94.4% retention after 120 cycles. Even at 0.3 C and 45 °C, it maintains 209.7 mAh g −1 with 95.7% retention after 300 cycles, demonstrating excellent thermal stability.
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DOI
高影响因子
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