APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Lili Huang,Shengpeng Mo,Xin Zhao,Jiangjing Zhou,Xiaobin Zhou,Yanan Zhang,Yinming Fan,Qinglin Xie,Bing Li,Junhua Li
Herein, a core-shell structured Co 3 S 4 /NC@ZnS/NC heterojunction has been constructed via elaborately synthesizing metal-organic framework (MOF)-on-MOF precursors (ZIF-67@ZIF-8) and following controlled carbonization-sulfidation processes. The developed Co 3 S 4 /NC@ZnS/NC achieves higher performances for CO 2 photoreduction with water vapor towards CO (28.44 μmol g −1 h −1 ), CH 4 (1.93 μmol g −1 h −1 ) and C 2 H 4 (12.23 μmol g −1 h −1 ) in a continuous-flow condition under visible-light irradiation, which are significantly superior than those of Co 3 S 4 /NC and ZnS/NC. 13 CO 2 isotope tracer analysis verifies that CO, CH 4 and C 2 H 4 originate from the carbon source of CO 2 . Experiments and DFT calculations confirm that constructing an electron transport layer (ZnS/NC) in Co 3 S 4 /NC@ZnS/NC can contribute to a feasible channel for the enhanced separation and transfer of charge carriers. In heterojunction , non-bonding Co and Zn atomic pairs as adsorption sites synergistically participate in the CO 2 activation through the unique electron transport channel and acquire the lower energy barriers of COOH* formation. Moreover, in situ DRIFTS reveals the key intermediates and possible conversion pathways to main products. This work presents an attractive strategy to construct dual MOFs-derived metal sulfide heterojunctions for high-performance CO 2 conversion.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Ruiqi Fang,Jie Kang,Fengliang Wang,Xin Zhao,Yingwei Li
The production of valerate esters, a class of transportation biofuels (additives), usually undergoes alternate hydrogenation and acid-catalysis dehydration processes that suffer from inevitable coke deposition and undesirable side reactions. We report a one-pot esterification–hydrogenolysis reaction pathway for valeric biofuels synthesis from biomass-derived 2-furoic acid, which was proceeded over the elaborate CoPtX@Co3O4-NC (X = 0.01, 0.02, 0.05, and 0.1) catalysts. The catalysts were constructed through a MOF-engaged etching-pyrolysis-replacement strategy to obtain mesoporous pocket cube nanoboxes-in-nanobox morphology and uniform CoPtX@Co3O4 core–shell nanoparticles with Pt moieties in tunable content and size (from single-atom scale to 2.4 nm). The obtained acid-free CoPtX@Co3O4-NC catalyst achieved an average 92.2% yield of ethyl valerate at a complete conversion of 2-furoic acid, and the reaction ran steadily in a microchannel continuous flow reactor for at least 200 h, which also inhibited the byproduct generation and coke deposition. A mechanistic study suggested that 2-furoic acid was preferably adsorbed on the oxyphilic Co3O4 shell for esterification initially; then the generated esters underwent sequential and exclusive hydrogenolysis steps over the CoPt core to yield valerate esters. The high industrial application prospect of this reaction pathway was additionally highlighted by producing 12 kinds of valeric biofuels from 2-furoic acid and the corresponding C1 ∼ C7 primary, secondary, and tertiary alcohols.
研究领域:
化学工程
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催化材料科学
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产品关联
DOI
高影响因子
MOLECULES
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2025
·Vol. 30
·期 9
·1869
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IF 4.6
Lili Chen,Shuya Xue,Xin Li,Linbo Deng,Jiapeng Li,Jing Zhou,Yansha Gao,Xuemin Duan,Limin Lu
The development of sensitive and selective methods for detecting pesticide residues has become paramount for ensuring food safety. In this work, a high-performance molecularly imprinted electrochemical sensor based on the composite of Cu-BTC- and FeCo-ZIF-derived N-doped carbon (FeCo@NC), synthesized by pyrolysis and electrodeposition, was developed for Benomyl (BN) detection. The materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). In this sensing system, the Cu-BTC/FeCo@NC composite used as the electrode substrate displayed a large specific surface area, high electronic conductivity, and rich active catalytic sites, demonstrating excellent electrocatalytic ability toward BN oxidation. Meanwhile, Cu-BTC, with its abundant surface functional groups, facilitated strong hydrogen bonding interactions with the imprinted template molecule of 3,4-ethylenedioxythiophene (EDOT), promoting the formation of a uniform molecularly imprinted membrane on the substrate material surface. The introduced MIP-PEDOT could enhance the selective recognition and enrichment of the target BN, leading to an amplified detection signal. Thanks to the synergistic effects between Cu-BTC/FeCo@NC and MIP-PEDOT, the proposed sensor achieved a low detection limit of 1.67 nM. Furthermore, the fabricated sensor exhibited high selectivity, reproducibility, and interference resistance in detecting BN. The method has been successfully applied to the determination of BN in vegetable and fruit samples, indicating its potential for use in practical applications.
研究领域:
食品科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2022
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IF 9.231
Kenken Li,Jiarui Cui,Qi Yang,Songlei Wang,Ruiming Luo,Argenis Rodas-Gonzalez,Peiyuan Wei,Li Liu
In this research, g-C 3 N 4 /Cu@CoO/NC, which contained graphitic phase carbon nitride (g-C 3 N 4 ) with a binary nanostructure and Cu@CoO/NC with a bimetallic MOF precursor, was constructed by a low-temperature pyrolysis process. The g-C 3 N 4 /Cu@CoO/NC was characterised by several techniques, including X-ray diffraction, scanning electron microscope, transmission electron microscope and X-ray photoelectron spectroscopy. Further, it was used to prepare an electrochemical sensor for the detection of ractopamine (RAC) in meat samples. The sensor showed excellent electrochemical oxidation characteristics for RAC detection, with a wide linear range (0.005 μmol/L to 32.73 μmol/L) and low detection limit (1.53 nmol/L). Meanwhile, the reproducibility, stability and interference of the g-C 3 N 4 /Cu@CoO/NC/GCE sensor were found to be excellent. Besides, the g-C 3 N 4 /Cu@CoO/NC/GCE sensor was well-used for the detection of RAC in pork, pig liver and lamb samples with recovery rates ranging from 96.5 % to 102.2 %.
研究领域:
食品科学
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分析化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2018
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IF 4.439
Limei Xu,Lin Ma,Xiaoping Zhou,Yan Ling,Xiaolang Wang,Meifeng Chen
A simple hydrothermal plus annealing method has been developed to fabricate SnS/NC nanocomposites and their electrochemcial Li-storage performance has also been investigated. The as-prepared composites are characterized by XRD, SEM, EDS, Raman, BET and XPS. In this composite, ultrathin SnS nanosheets are well hybridized with glucosamine-derived nitrogen-doped carbon to form hierarchical porous architectures with large surface areas. Benefiting from the desirable structural merits as well as the generated synergism between components, the SnS/NC composite electrode delivers an enormously enhanced electrochemical lithium-storage performance including large reversible capacity of 832 mA h g −1 after 100 cycles, enhanced cyclability and superior high-rate capability.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Di Wu,Yilin Wang,Zhifang Liu,Caiyu Ge,Jiejun Li,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Rifampicin (RFP) is an emerging environmental pollutant that exists in natural waters due to discharged from the medical and pharmaceutical industries, posing potential risks to aquatic life and human health. Developing highly sensitive detection techniques for RFP is essential for environmental monitoring and public health protection. In this work, Mn 2 O@Zn-NC was synthesized using in-situ growth and pyrolysis methods. Rod-like MnO 2 providing dispersed sites for the growth and crystallization of dodecahedral ZIF-8,with dodecahedral ZIF-8 tightly encapsulates MnO 2 . Additionally, the Zn-NC formed after high-temperature treatment effectively addresses the issue of poor conductivity in MnO 2 , which is conducive to the accurate display of RFP current signals. Using material of Mn 2 O@Zn-NC, a high-sensitivity electrochemical sensor was developed with a detection range of 0.040–100 µM and a limit of detection of 25 nM. This highly sensitive sensor can accurately detect RFP in environmental samples, with results comparable to those obtained using UV-Vis spectroscopy. This breakthrough electrochemical detector provides valuable opportunities for creating smart, efficient, and portable monitoring solutions.
研究领域:
环境科学
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分析化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Kunpeng Song,Wenwen Yang,Jinfeng Wei,Fang Liao
The slow kinetic efficiency of the cathode oxygen reduction reaction (ORR) and high catalyst cost of fuel cells has seriously hindered the development of clean energy technologies. Herein, a novel Fe-Cu dual atomic sites embedded in hyper crosslinked N-doped carbon skeleton (FeCu@NC) catalyst was fabricated via mimicking both the constituents of active centers and Fe-N4 microstructure of Cytochrome c oxidase (CcO). The FeCu@NC exhibits a superior ORR activity, with about 40 mV more positive halfwave potential (E1/2) than that of commercial Pt/C catalyst in base. Importantly, the FeCu@NC displays an excellent durability (keep 92.7% activity after 20000s), which is superior to commercial Pt/C. Experimental data combined with theoretical calculation show the remarkable performance of this catalyst is attributed to the design of Cu、Fe bifunctional catalytic synergy reference CcO, the unique synergistic effect between Cu and Fe coordination units in which metal Cu serves as another electron donor to increase the electron density of Fe-N4 centers and thus facilitate O2 reduction.
研究领域:
材料科学
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催化化学
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能源技术
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生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2023
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IF 6.4
Guandong Wang,Wenjuan Xiang,Huize Liu,Yizhi Yin,Dandan Ma,Jinfu Ma
The key to the development of metal–air batteries is the research on efficient and stable non-noble metal bifunctional electrocatalysts that can simultaneously catalyze the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the same electrolyte. Ce–O–C single-component materials have abundant oxygen vacancies and commendable electrical conductivity; therefore, they have great application potential in bifunctional catalysis. However, their application is limited by the harsh synthesis conditions (pyrolysis at >1750 °C). Herein, CeO2C2/NC material is obtained during the pyrolysis of Ce-MOF at 900 °C, and it is found that the CeO2C2/NC material has a satisfactory ORR/OER bifunctional catalytic effect. In addition, CeO2C2/NC possesses good electrochemical properties, such as ORR Eonset = 0.92 V, E1/2 = 0.83 V (vs reversible hydrogen electrode (RHE)), and an excellent Tafel slope of 77.7 mV dec–1, outperforming the commercial Pt/C catalyst. X-ray photoelectron spectroscopy (XPS) analysis reveals that Ce3+ and its chemisorbed oxygen (Oβ) percentages of 50.33 and 79.37%, respectively, are the main reasons for the production of abundant oxygen vacancies. The prepared Ce–O–C series material will be applied to zinc–air batteries (ZABs), which is expected to improve the comprehensive performance of ZABs. The results can provide ideas for the development of ORR/OER single-component bifunctional catalysts.
研究领域:
材料科学
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电化学
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能源存储与转换
✓ 已验证
DOI
高影响因子
Molecular Catalysis
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2023
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IF 4.6
Binxiong Guang,Weijia Pu,Yiwei Zhang,Wei Zhang,Yahui Xiao,Yong Liu
Highly selective oxidation of styrene into benzaldehyde with molecular oxygen under solvent-free conditions still remains a great challenge. Herein, Ce-modified heteropolyacid-based poly(ionic liquid)s were prepared as precursors followed by carbonization to obtain nano CeWO x composite confined in N-doped carbon (CeWO x @NC). Then, the as-prepared catalysts were further characterized by FT-IR, TG, XRD, XPS, BET, SEM, TEM-EDS and H 2 -TPR to discuss the relationship between the structure and performance. The nano CeWO x composite with a mixed valence state of W 4+ and W 6+ was formed and well dispersed in the N-doped carbon. Moreover, the valence ratio of W 4+ to W 6+ , redox capacity and oxygen vacancies could be tailored by carbonization temperature and incorporation of Ce, which was strongly correlated with the catalytic performance of CeWO x @NC catalysts. Benefited from that, the CeWO x @NC800 catalyst displays outstanding catalytic performance for solvent-free oxidation of styrene into benzaldehyde with styrene conversion of 45.1%, benzaldehyde selectivity of 89.2% and TOF of 310.1 h −1 at the optimum reaction conditions. Furthermore, the catalyst has shown robust stability and reusability.
研究领域:
化学工程
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催化科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Ting Zhao,Kaiquan He,Xingyi Hu,Pu Hu,Chaoqun Shang
Li S battery suffers from polysulfides' shuttle effect and unsatisfactory redox kinetics. To tackle these issues, we design a multi-functional interlayer based on heterogeneous Mo 2 C/Co confided by N-doped porous carbon (Mo 2 C/Co@NC) via one-step controlled pyrolysis of Co 2+ /MoO 4 2− /2-methylimidazole. The heterogeneous Mo 2 C/Co as active centers effectively immobilizes polysulfides and accelerates their redox transformation kinetics. Moreover, the hierarchical porous NC matrix guarantees rapid electron/ion transport. Acting as an interlayer, the electrochemical evaluation demonstrates desirable performance. Specifically, a high initial discharge capacity of 874.0 mAh g −1 is achieved at 3C, which retains 373.3 mAh g −1 after 1000 cycles (capacity fading rate: 0.057 %/cycle), significantly outperforming battery without interlayer (0.082 %). This work demonstrates an effective heterointerface engineering strategy for the development of Li S battery practical application.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Research
·
2024
·
IF 9.5
Liang Chen,Zhang Tianyu,Sun Shilun,Han Aijuan,Qiu Zenghui,Xu Haijun,Liu Junfeng
Iron–nitrogen–carbon single-atom catalysts (Fe–N–C SACs) are widely acknowledged for their effective oxygen reduction activity, however, their activity requires further enhancement. Meanwhile, additional structural optimization is necessary to enhance mass transport and achieve higher power density in practical applications. Herein, using ZIF-8 as a template, we synthesized yolk–shell catalysts featuring complex sites of Fe single atoms and Cu nanoclusters (y-FeCu/NC) via partial etching and liquid-phase loading. The synthesized y-FeCu/NC catalyst exhibits high specific surface area and mesoporous volume. Combined with the advantages of highly active sites and yolk–shell structure, the y-FeCu/NC catalyst demonstrated outstanding catalytic performance in the oxygen reduction reaction, achieving a half-wave potential ( E 1/2 ) of 0.97 V in 0.1 M KOH. As a practical energy device, Zn-air battery (ZAB) assembled with y-FeCu/NC catalyst achieved a remarkable power density of 356.3 mW·cm −2 , representing an improvement of approximately 28.5% compared to its solid FeCu/NC counterpart. Furthermore, it showcased impressive stability, surpassing all control samples.
研究领域:
材料科学
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电化学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wenyao Xue,Hongliang Fu,Guanjie Xue,Jing Zhao,Yue Lian,Zhifeng Wang,Yongfeng Hu,Huaihao Zhang
The oxygen evolution reaction (OER), a half-process of water electrolysis, involves four electron transfer processes with a high energy barrier, leading to slow reaction kinetics. Developing stable and high-efficiency OER electrocatalysts remains a major challenge in field of water electrolysis. Here, a novel Ni-doping V 2 O 5 @NC nanoflower-like catalyst is synthesized for OER reaction. Specifically, Ni-V 2 O 5 @NC is obtained by incorporating Ni into V 2 O 5 through a simply hydrothermal- carbonization process, using NH 4 VO 3 , Ni(NO 3 ) 2 ·6 H 2 O and H 2 C 2 O 4 · 2 H 2 O as raw materials. This approach can improve the OER activity and stability of V 2 O 5 . Ni-V 2 O 5 @NC presents the following advantages. Firstly, Ni-doping combined with nanoflower structure improves the reaction activity. Ni-doping generates more electrochemical active sites, facilitating the adsorption/desorption process of reaction intermediates and electron transfer, thereby enhancing catalytic activity. Besides, the nanoflower-like structure provides a relatively high specific surface area and more active sites to participate in the reaction, thus boosting the catalytic reactivity. Secondly, Ni with high conductivity and its doping into V 2 O 5 causes structural and performance changes of material, reducing the charge transfer resistance and optimizing the conductive property. Meanwhile, the inherent N and C from hydrothermal reaction also increase material conductivity. Also, Ni doping inhibits the stacking of V 2 O 5 lamellar structure while maintaining the catalyst’s activity, structural integrity and the improved stability. The electrochemical analysis results show Ni-V 2 O 5 @NC good electrochemical performance. Ni-60-V 2 O 5 @NC features a low overpotential (300 mV@10 mA cm −2 ) and a small Tafel slope (74.2 mV dec −1 ) in OER. Additionally, the overpotential of Ni-60-V 2 O 5 @NC only increases by 3 mV after 1000 cycles stability tests.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）