International Journal of Electrochemical Science
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2024
·
IF 1.3
Mengling Xu,Junjie You,Chuanqing Du,Zhuotong Yu,Siqing Cheng
Prussian blue (PB) has been broadly recognized as promising cathode materials for sodium-ion batteries (SIBs) due to its large interstitial space and robust frame structure, whereas their applications are impeded by unsatisfied long-term cyclability and poor rate capability due to its inherent lattice defects. Herein, we report to fabricate the mesoporous hollow Fe 4 (Fe(CN) 6 ) 3 (one kind of PB) hierarchical nanocrystal architecture by the hydrothermal crystallization and HCl etching of the mesoporous precursor Fe 4 [Fe(CN) 6 ] 3 cubic particles, leading to high crystallinity and large specific surface area. The resultant Fe 4 [Fe(CN) 6 ] 3 cathode for SIBs exhibits a good reversibility and cycling stability with a capacity retention of 75.6 % at 0.5 C after 200 cycles as well as superb rate capability featuring a stable discharge specific capacity of 30.2 mAh g −1 at as high as 10 C, demonstrating the fast kinetics and low polarization of electrochemical reaction, which might be ascribed to the unique architecture and high crystallinity. This offers a new route to designing PB cathode of for SIBs with high rate capabilities.
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高影响因子
MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Xue Zhang,Shihan Kang,Wangxing Cheng,Lei Wang,Nannan Lu,Lin-Wei Chen
Establishing an efficient and sensitive electrochemical sensor for paracetamol (PCM) is of significant importance in pharmaceutical quality control and environmental protection. This paper reports a novel electrochemical sensing platform based on a ZIF-8-derived strategy for fabricating N-doped porous carbon with monodispersed Fe-N x sites (Fe-N/NPC). The introduction of iron phthalocyanine (Fe-Pc) molecules fixed within the ZIF-8 framework prevents the aggregation of metal species during high-temperature treatment, ensuring the high dispersion of Fe-N x sites. Under optimized conditions, Fe-N/NPC-10/GCE electrochemical sensor exhibits excellent performance for PCM detection, which is mainly attributed to the synergistic enhancement between Fe-N x and NPC. The high surface area of NPC with a porous structure and N doping effect, which enhances its adsorption capacity for PCM, facilitating electron transfer and thereby amplifying the response signal. At the same time, the high-density monodispersed Fe-N x provides abundant catalytic active sites, improving electrocatalytic activity. Through the investigation of how buffer solution pH affects the oxidation peak induced by PCM, a pH of 7.0 was ultimately determined to be the optimal value. Using differential pulse voltammetry (DPV), the Fe-N/NPC-10/GCE electrochemical sensor demonstrates a wide detection range (0.1–10, 10–150 μM) for PCM with a detection limit (LOD) of 0.019 μM. Furthermore, the sensor exhibits good selectivity, stability, and reproducibility, and has been successfully applied for the determination of PCM in real pharmaceutical samples, with a recovery rate close to 100 %, indicating that the analytical method performs well and is suitable for analysis of real samples.
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COLLOIDS AND SURFACES B-BIOINTERFACES
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2024
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IF 5.4
Na Li,Jing Tang,Congxiao Wang,Minghui Wang,Guodong Chen,Lei Jiao,Qinglai Yang,Xiaofeng Tan
The rational design of nanozymes with highly efficient reactive oxygen species (ROS) generation to overcome the resistant infection microenvironment still faces a significant challenge. Herein, the highly active Fe single-atom nanozymes (Fe SAzymes) with a hierarchically porous nanostructure were prepared through a colloidal silica-induced template method. The proposed Fe SAzymes with satisfactory oxidase (OD)-like and peroxidase (POD)-like activity can transform O 2 and H 2 O 2 to superoxide anion free radical (•O 2 - ) and hydroxyl radical (•OH), which possess an excellent bactericidal effect. Also, the glutathione peroxidase (GPX)-like activity of Fe SAzymes can consume glutathione in the infection microenvironment, thus facilitating ROS generation to enhance the sterilization effect. Besides, the intrinsic photothermal effect of Fe SAzymes further significantly boosts the enzyme-like activity to generate much more reactive oxygen species for efficient antibacterial therapy. Accordingly, both in vitro and in vivo results indicate that the Fe SAzymes with synergistically photothermal-catalytic performances exhibit satisfactory antibacterial effects and biocompatibility. This work provides new insights into designing highly efficient SAzymes for effective sterilization applications by an amount of ROS generation.
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PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Zhihao Liu,Tingting Yang,Yuwen Yan,Yongtao Tang,Jianxin Meng,Fengyu Li
Colorimetry is to determine the component content usually comparing or measuring the “RGB” values, which has the advantages of quick response and visual comparison. However, the widely reported “RGB” models are limited by requiring professional operation such as accurate sampling, insufficient information, cumbersome calculation, etc., which has significantly restricted the promotional application. Inspired by the PAA-PVA gel with excellent absorbing-swelling ability and superior response ability, indefinite volume addition has a significant difference in the swelling phenomenon of PAA-PVA hydrogel, the extent of this enlargement is directly related to the amount of testing sample absorbed, which can be applied to reflect testing sample volume added. In addition, benefited from a comprehensive and precise parameter network, the deep learning (DL) algorithm solves the defects such as ambient light effect and manual extract RGB values of the colorimetric sensing analysis strategy. Considering Fe(II) is an essential element for life science and environmental monitoring, we have developed a self-calibrating colorimetric sensor assisted deep learning strategy for the Fe(II) detection with indefinite volume. It can directly complete the analysis of Fe(II) concentration via captured images, without going through a complicated process similar to the RGB model. Specifically, we integrated the advantages of colorimetric sensing strategy, absorbing-swelling hydrogel, and DL algorithm to develop a phenanthroline (PHEN) indicator doped PAA-PVA colorimetric sensor (PHEN-PAA-PVA). Then, 2,500 colorimetric response images were collected as the training dataset and assessed 2 DL algorithms and 7 machine learning (ML) algorithms. The convolutional neural network (CNN) model exhibited the most efficiency to quantify 1×10 −5 -9×10 −4 mol/L Fe(II), with a limit of detection (LOD) of 3.3×10 −6 mol/L. It provides a promising and blooming in-situ detection approach for Fe(II) analysis, contributes to health management and environment monitoring.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yingying Guo,Huiyong Wang,Qian Zhang,Shuaiqi Gao,Zhiyong Li,Yang Zhao,Zhimin Liu,Suojiang Zhang,Jianji Wang
Covalent organic frameworks (COFs) have great potential in solar hydrogen production to alleviate environmental pollution and global energy crisis. However, to achieve high H 2 yield is still a challenge. Herein, we designed and synthesized two Fe 3+ -coordinated imine type COFs (Fe-COFs) for photocatalytic H 2 production from water splitting. It was surprising to find that with the progress of H 2 evolution under visible light, the bulk powders of Fe-COFs (180–250 nm) were gradually stripped into covalent organic nanosheets (Fe-CONs, 0.3–1.9 nm), which in turn efficiently catalyzed H 2 production. As such, a self-driven mechanism was established in the catalytic system, and H 2 evolution rate increased with the increase of cyclic runs until the thickness of the nanosheet no longer changes in the regeneration and reuse process of the Fe-CON photocatalysts. The optimal Fe-CON catalyst exhibited a record high H 2 evolution rate of 67.94 mmol g −1 h −1 among the currently reported COFs loaded with other non-noble metals, due to the more exposed active sites, smaller charge-transfer resistance, and stronger separation ability of the photogenerated electrons and holes of Fe-CONs. This work provides the first example for the integration of self-driven photochemical exfoliation of 2D materials and their highly efficient photocatalytic hydrogen evolution.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 5
·1-14
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IF 2.8
Junlong Wang,Yimin Dai,Ling Cai,Siwen Yang,Yusong Yang,Lihui Xie,Li Wan
The frequent leakage of crude oil and the illegal discharge of industrial organic pollutants have caused serious damage to the ecological environment and the loss of valuable resources. In this paper, we introduce a sponge with magnetic and photothermal properties. Polydopamine and ferric oxide (Fe 3 O 4 ) were grafted onto the sponge, self-assembled on the three-dimensional (3D) skeleton surface by Zif material, and grafted with cetyltrimethoxysilane to make the modified sponge highly hydrophobic (water contact angle = 155°). Moreover, due to the dual photothermal conversion properties of polydopamine and ferric oxide (Fe 3 O 4 ), the modified sponge can be quickly heated to 110 °C under light (1.25 kw/m 2 ). The modified sponge demonstrated excellent crude oil adsorption capacity (44 g/g) and recyclability. Due to its magnetic properties (saturated magnetization = 4.43 emu/g), derived from the incorporation of Fe₃O₄, the sponge could be remotely controlled for adsorption. Moreover, it demonstrated the ability to continuously adsorb and collect light oil from the water surface with the aid of a peristaltic pump. The sponge also functioned as an efficient filter for separating heavy oil underwater through liquid gravity, achieving a separation efficiency of 97.2%. Therefore, this composite sponge not only presents a promising solution for crude oil spill remediation but also holds significant potential for industrial wastewater treatment, making it highly relevant for practical environmental applications.
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高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 8
·e202303088
·
IF 1.9
Xiayan Zhang,Zhi Song,Boxia Liu,Jialu Liu,Yeqiong Huang,Dongxu Han
Graphical Ni/Fe bimetallic atom cluster catalyst is prepared by a hydrothermal to stimulate PMS to produce high concentration 1 O 2 and efficiently remove BPA from aqueous solution. It is found that 1 O 2 in the system is the most important active component in the degradation process of BPA, and a high concentration of 1 O 2 could promote the rapid degradation of BPA in solution. The advanced oxidation process based on peroxymonosulfate (PMS) is a new water purification strategy. In this work, Ni/Fe bimetallic atom cluster composite catalyst is prepared by a hydrothermal synthesis to stimulate PMS to produce high concentration singlet oxygen ( 1 O 2 ) and efficiently remove bisphenol A (BPA) from aqueous solution. The experimental data show that in a broad pH range (pH=3–11), the removal rate of BPA by the non-free radical pathway induced by 1 O 2 is close to 100 %, and the catalyst still has high stability after 5 cycles. The mechanism of BPA removal in NiFe−BC/PMS/BPA catalytic degradation system is investigated by quenching experiment. It is found that 1 O 2 in the system is the most important active component in the degradation process of BPA, and a high concentration of 1 O 2 could promote the rapid degradation of BPA in solution. In this paper, the high catalytic activity and selectivity of bimetallic atomic cluster catalysts can provide new insights for the treatment of phenolic wastewater.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Shuangshuang Yang,Xingwei Wang,Chen Zhao,Chuanpeng Li,Qiangliang Yu,Bo Yu,Meirong Cai,Feng Zhou
Electromagnetic (EM) pollution frequently disrupts the regular operation of sophisticated electrical devices, necessitating the urgent development of lightweight EM wave absorbers that possess powerful absorption capability. Herein, we report a simple method for the preparation of Fe and heteroatom co-doped biochar composites (FeX-BC, where X = N, S) by directly carbonizing the precursors of anhydrous FeCl 3 , cherry kernel powder, and heteroatom dopants (melamine or Na 2 S 2 O 3 ·5H 2 O). By adding different amounts of dopants during the synthesis of the precursors, it is possible to adjust the heteroatom content of the FeX-BC samples with precision. It is worth mentioning that the FeN 0.1 -BC composite delivers the best EM wave absorption performance with an effective absorption bandwidth of 4.8 GHz and a minimal reflection loss of −63.2 dB. Furthermore, the significant attenuation of EM wave can be attributed to the synergistic interplay of magnetic loss, dielectric loss and the enhanced impedance matching. This study introduces a simple methodology for the fabrication of EM wave absorbers, a significant contribution to the synthesis, advancement, and functional applications of biomass-derived materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Wenjie Wang,Shan Ni,Yue Zhao,Yafeng Liu,Wang Yao,Jianrong Zeng,Congmei Chen,Huizhou Liu,Liangrong Yang
Uranium capture from aqueous solution is a hopeful project for the development of the nuclear industry, while the construction of adsorbents with high adsorption capacity, kinetics and selectivity remains a challenge. Herein, a feasible two-dimensional superstructure of Fe-based Mott-Schottky heterojunction (2D-Fe-N-C) is fabricated by an ice template and pyrolysis coupling strategy, which synergistically achieves the high-performance adsorption and reduction of UO 2 2+ from aqueous solution. The two-dimensional superstructure exposes more active sites and promotes ion transport, thereby increasing the adsorption capacity and accelerating the adsorption rate of the material. In addition, the internal electric field generated by the work function difference formed by each component of heterojunction contributes to improving the conductivity and speeding up the charge transfer. Meanwhile, the resulting charge space at the heterogeneous interface enhances the adsorption of uranium and the reduction reaction. Thus, the designed 2D-Fe-N-C demonstrates excellent adsorption and reduction properties for uranium, with extraction efficiency reaching up to 1348.0 mg/g and achieving adsorption equilibrium within 4 h. Moreover, 2D-Fe-N-C demonstrates high selectivity for various ions and exhibits superior adsorption performance in real water systems. This research offers a feasible strategy based on the synergistic effects of superstructure and interface engineering to achieve highly efficient selective adsorption of uranium.
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高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xiaoqin Sun,Xuejiao Feng,Yuan Dang,Sining Yun
Sulfite is deemed as a promising precursor to produce highly reactive species for contaminants remediation. Herein, the urchin-like Ni-Fe-Mo sulfide (NiFeMoS x ) was anchored in-situ on nickel foam as a cathode to activate CaSO 3 for efficient degradation of tetracycline (TC) under natural condition. The degradation efficiency reached 92.7% within 60 min, which was about 1.81 times higher than that of the electro-Fenton process based on NiFeMoS x . The beneficial performance came from the synergistic activation of CaSO 3 by simultaneous rapid redox cycles of Fe(II)/Fe(III) and Ni(II)/Ni(III) on the NiFeMoS x cathode. Specifically, the primary intermediates Fe(II)-HSO 3 - and Ni(II)-SO 3 2- triggered a series of radical chain reactions, accompanied the reduction of Ni(III)/Fe(III) by electrochemistry and electron donor of Mo(IV) and S 2- on the surface of the catalyst. The regeneration of the Fe(II)/Ni(II) was quickly realized and subsequently triggered the chain reactions, which would accelerate the formation rate of reactive species, such as SO 4 ∙ − , ·OH, O 2 ∙ − and 1 O 2 , of which 1 O 2 and O 2 •- played important roles on degradation TC. This work provides a promising application for the efficient removal of persistent organic pollutants by metal sulfide activated sulfite.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Hao Li,Manling Zhang,Yufeng Jiang,Yi Liu,Wenjun Duan,Di Lang,Wei Du,Zhaofeng Chang,Peng Zhang,Bo Pan
s Biochar exhibited excellent performance in activating persulfate (PS) for the degradation of organic contaminants. However, the role of endogenous metals in the activation of PS needs to be clarified, which will hinder the understanding of the PS activation mechanism by biochar and the design of efficient biochar for PS activation. In this study, biochars were prepared at different temperatures using cellulose, and trace amounts of Fe (0.069 %) and Mn (0.056 %) were incorporated separately or together into biochar to mimic the endogenous metals whose concentrations were consistent with the ones in local corn stalks. Our results demonstrated that a trace amount of Fe could greatly enhance the removal of ofloxacin (OFL) in the C1000-Fe system. Removing metals from biochar via acid-washing did not significantly impact the removal efficiency of OFL. The Raman analysis showed that Fe could increase the defect structures in C1000-Fe, which were converted during the cycling experiments, indicating they participated in the activation of PS. ROS capturing and quenching experiments confirmed that the increased defect structures via Fe in C1000-Fe facilitate the activation of PS to generate superoxide anions (O 2 •− ) and then convert them into singlet oxygen ( 1 O 2 ) for OFL degradation. Our results highlighted that a trace amount of Fe in biochar enhanced its activation of PS for degradation of OFL via altering the carbon structure, not itself as the activation site, which will benefit understanding the role of endogenous metals in the activation of PS.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Sheng Deng,Xu Han,Ningqing Lv,Xiaochun Yang,Qiyuan Liu,Yonghai Jiang,Yu Yang,Beidou Xi
Despite the widespread use of biochar as a heterogeneous catalyst in AOPs, there is still a need to clarify the activation mechanism of nitrogen-doped biochar on ferrate (Fe(VI)). The Fe(VI) activation was significantly enhanced by the nitrogen-doped biochar synthesized at 800 °C (BC N -800) in this research, resulting in improved degradation of carbamazepine. Characterizations showed that a honeycomb-like pore and channel structure was formed on the inner layer of modified biochar and the SSA and pore volume were increased five and two times respectively as the temperature raised to 800 °C. Numerous indications indicated that the main active oxidizers in the BC N -800/Fe(VI) system were the high Fe species, and subsequent examination unveiled that the incorporation of nitrogen resulted in decreased resistance to charge transfer and enhanced efficiency of electron transfer for the production of high Fe species. DFT calculation illustrated that the SET path in the BC N -800/Fe(VI) system was spontaneous and single-electron oxygen atom transfer was the primary path for generating more highly reactive Fe(V) species. Notably, the BC N -800 remains stable after the organic degradation reaction and the toxicity of the intermediates produced during degradation decreases. This research will not only establish a theoretical foundation for designing eco-friendly catalysts based on biochar but also boost the investigation of biochar's ecological impacts.
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高影响因子
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