ACS Catalysis
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2023
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IF 12.9
Heng Shi,Yi He,Yubin Li,Pingya Luo
Fenton-like catalysis based on peroxymonosulfate (PMS) activation has shown great potential in the treatment of organic wastewater. Heterogeneous Fenton-like catalysts containing transition metal active sites are highly efficient for PMS activation. However, the reduction of oxidized metal active sites was usually not prompt due to the sluggish reaction kinetics, which caused the insufficient redox cycle of the metal active sites and further hampered the catalysis efficiency. Recent studies have shown that the synergy effect between photocatalysis and PMS activation may address the above obstacle and boost overall efficiency. However, a deeper understanding of this synergy effect is still missing, making it difficult to be rationally controlled; thus, a poor synergy effect is frequently reported. Herein, a Co/Fe bimetal-doped graphitic carbon nitride (g-C3N4) was designed representatively through systematical characterization and theoretical calculation, the synergy effect was revealed to be profoundly determined by the competitive role of a hole in the system and the adsorbed metastable PMS* on the catalyst surface, and furthermore, the synergy effect can be rationally manipulated; when the Co/Fe doping ratio is 2.5:2.5, the as-prepared g-C3N4 with a moderate valence band position can endow the catalyst with an optimized photo-Fenton-like synergistic effect and the highest catalytic degradation performance. This work sheds light on the rational design of highly efficient photo-Fenton-like catalysts.
研究领域:
环境科学
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催化材料
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
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IF 13.273
Dan Yu,Jiahong He,Taiping Xie,Qiang Xu,Quanxi Zhu,Jun Yang,Jibin An,Feng Ye,Jiankang Wang,Bin Xiang
It is of significant to explore activation mechanism of peroxymonosulfate (PMS) for development of more active and robust metal oxide catalyst. Here, we discover a key role of Sr-O bond in boosting the catalytic activity of SrCo 0.81 Fe 0.19 O 2.78 perovskite. In this catalytic system, oxygen vacancy, Fe 4+ /Fe 3+ , and Co 3+ /Co 2+ redox cycles synergistically enhanced catalytic activity of SrCo 0.81 Fe 0.19 O 2.78 for antibiotic degradation with 100 % Florfenicol (FF) removal in 27 min. Moreover, this catalyst presented excellent stability although oxygen vacancy had a decrease after reuse. The influential factors including coexisting anions on FF degradation were systematically studied. Comparative experiments and theoretical calculation indicate Sr-O ionic bond provides electrons for Co-O and Fe-O covalent bonds to accelerate Fe 4+ /Fe 3+ , and Co 3+ /Co 2+ redox cycles for PMS activation . Finally, the FF degradation pathway over SrCoFe perovskite/PMS system was identified by LC-MS/MS.
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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DOI
高影响因子
Sustainable Energy & Fuels
·
2021
·Vol. 5
·期 4
·1095-1102
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IF 6.367
Fen Li,Jinxia Li,Lihui Zhou,Sheng Dai
Metal–organic frameworks (MOFs) have recently emerged as one of the most promising electrocatalysts for oxygen evolution reaction (OER) due to their abundant metal sites and porous structures. However, the limited modulation of the single-metal sites of MOF-based catalysts restricts further promotion of their catalytic performance. In this work, we have developed a composite Co–Fe-based MOF catalyst based on Co–BDC (1,4-benzenedicarboxylate) and Fe–BDC, which modulated the electronic structure via the construction of the heterogeneous interfaces of Co–BDC and Fe–BDC. Enhanced OER performance was achieved in the composite Co–Fe–BDC catalyst, far more exceeding that of the counterpart Co–BDC or Fe–BDC. In addition, it was found that additional ultrasonic treatment effectively facilitated the dispersion of Fe–BDC on Co–BDC, as compared to the composited MOF obtained via physical mixture or magnetic stirring. The composite Co–Fe–BDC catalyst prepared via the ultrasonic-assisted one-pot synthesis exhibited an overpotential of 295 mV at a current density of 10 mA cm−2, which was even superior to that of the commercial RuO2 catalyst, while holding a lower cost and excellent stability. Insights gained in this study may shed new lights on heterogeneous interfaces and composition strategy of MOF-based electrochemical catalysts.
研究领域:
材料科学
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电化学
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DOI
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
Jinlin Hu,Haojie Zhang,Simeng Xia,Yishu Cai,Zhou Shi,Lin Deng
The widespread occurrence of carbamazepine (CBZ) in aquatic environments necessitates efficient water treatment technologies. This study developed a cobalt-doped iron oxychloride (Co-FeOCl) catalyst via a facile calcination method to activate peracetic acid (PAA) for enhanced degradation of CBZ. The incorporation of Co into the FeOCl structure dramatically boosted the catalytic performance, with 0.5Co-FeOCl exhibiting superior activity compared to pristine FeOCl. The 0.5Co-FeOCl/PAA system achieved an apparent rate constant of 0.039 min⁻ 1 , 19.5 and 5.6 times higher than that of the PAA alone (0.002 min⁻ 1 ) and FeOCl/PAA (0.007 min⁻ 1 ) systems, respectively. Mechanistic investigations revealed that the degradation was primarily driven by organic radicals (CH 3 C(O)OO• and CH 3 C(O)O•) and high-valent metal species (Co(IV) and Fe(IV)). The Co doping established synergistic Fe(II)/Fe(III)-Co(II)/Co(III) redox cycles, effectively accelerating the rate-limiting Fe(III) reduction step and facilitating continuous generation of reactive species. XPS analysis confirmed an increased surface Fe(II) content after reaction, supporting this synergistic mechanism. Density functional theory (DFT) calculations proved that Co sites exhibit superior adsorption capacity for PAA compared to Fe sites on three main facets. This work not only presents 0.5Co-FeOCl as a highly efficient and stable catalyst for PAA activation but also provides fundamental insights into the synergistic mechanisms in bimetallic/PAA systems for remediating refractory organic pollutants.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Wei Jiang,Yajun Li,Hongcheng Li,Yuhao Fu,Yi Li,Jian Ren,Qian Li,Limei Pan,Jian Yang
In this work, a unique three-dimensional (3D) network NiFeCoP@Ti₃C₂Tₓ composite, consisting of Co, Fe co-doped Ni 2 P (NiFeCoP) nanosheets anchored on Ti₃C₂Tₓ nanosheets via heterojunction, was situ constructed by phosphidizing the NiFeCo-LDH@Ti₃C₂Tₓ precursor. The 3D network structure establishes a 3D conductive network while generating a built-in electric field at the heterointerface, which efficiently accelerates electron/ion transport and simultaneously improves the structure stability of the electrode. DFT calculations demonstrate that Co doping further optimizes the electronic structure of NiFeCoP, introduces additional active sites, thereby promoting electrochemical reaction kinetics. Meanwhile, the synergistic effect among Ni, Fe, and Co with different redox potentials effectively buffers the volume changes during charge/discharge processes. Consequently, NiFeCoP@Ti₃C₂Tₓ as lithium ion batteries (LIBs) anode shows outstanding electrochemical performance at different current density (950 mAh/g after 340 cycles at 0.5 A/g, 816 mAh/g after 900 cycles at 1 A/g, 541 mAh/g after 1000 cycles at 2 A/g).
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DOI
高影响因子
JOURNAL OF POWER SOURCES
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2025
·
IF 7.9
Junlong Feng,Le Hu,Xiaowei Wu,Ziqin Liu,Kaiquan He,Pu Hu,Chaoqun Shang
The uncontrollable Li dendrite accumulation accompanied by low Coulombic efficiency severely hampers the sustainable and practical application of lithium metal batteries (LMBs). To tune the uneven Li + flux caused by irregular pores on commercial separator and realize modulated Li + plating/stripping behaviors, in this work, we report the modification of commercial polypropylene separator with etched Co/Fe-based Prussian blue analogue (PP@PBA-X, X represents the HCl etching time). The optimal PBA-4 with acid etching for 4 h possesses regulated micro-/meso-/macro-porous structure, which ensures homogeneous Li + flow of PP@PBA-4 with high Li + transference number of 0.76 and further hinders the growth of Li dendrites. With the assistance of PP@PBA-4, the Li||Li cell shows stable cycling performance for 500 h at 1 mA cm −2 with fixed specific capacity of 1 mAh cm −2 , while the full Li-S battery with limited Li supply delivers favorable cycling stability for almost 430 cycles with 60 % capacity retention and high Coulombic efficiency of 99.95 % at current density of 500 mAg −1 .
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Materials
·
2024
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IF 3.1
Xiaofei Hao,Ran Wang,Xiumin Tan,Xiufeng Zhang,Xupo Liu,Zhaoyang Wu,Dongli Yuan
Fabricating efficient oxygen evolution reaction (OER) electrocatalysts is crucial for water electrocatalysis. Herein, the spinel-type high-entropy oxides of (Co, Fe, Mn, Ni, Cr) 3 O 4 were synthesized through the high-temperature calcination approach. The influences of calcination temperatures on structures and electrochemical properties were investigated. The optimized catalyst of HEO-900 contains the hybrid structure of regular polyhedrons and irregular nanoparticles, which is beneficial for the exposure of electrochemically active sites. It was identified that the abundant high-valence metal species of Ni 3+ , Co 3+ , Fe 3+ , Mn 4+ , and Cr 3+ are formed during the OER process, which is generally regarded as the electrochemically active sites for OER. Because of the synergistic effect of multi-metal active sites, the optimized HEO-900 catalyst indicates excellent OER activity, which needs the overpotential of 366 mV to reach the current density of 10 mA cm −2 . Moreover, HEO-900 reveals the prominent durability of running for 24 h at the current density of 10 mA cm −2 without clear delay. Therefore, this work supplies a promising route for preparing high-performance multi-metal OER electrocatalysts for water electrocatalysis application.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Dehao Kong,Yong Wang,Jiayin Han,Yuan Gao,Fengrong Liu,Weirong Zhou,Yubing Gao,Geyu Lu
Triethylamine monitoring plays a vital role in industrial safety and marine environmental protection. Co 3 O 4 has been proved to be a promising sensitive material for triethylamine detection. Promoting gas reactions on the surface of sensitive materials is the key to realizing high-performance gas sensors. In this work, MgO microrods were used as sacrificial templates to prepare nanosheet-assembled hollow microtubular Co-Fe bimetallic oxides. The large specific surface area, small crystallite size, and stretched lattice of Co-Fe bimetallic oxides boosted surface gas reactions and improved the response to triethylamine vapor. The modulation in the energy band structure caused by doping-occupied sites of iron on the gas-sensing properties was also considered. The preferential occupation of tetrahedral sites by multivalent iron reduced the work function and band gap of the material, thus enhancing the formation of ion-adsorbed oxygen. In these cases, the sample with about 20 % iron content (CF2) showed the optimum triethylamine sensing performance at 195 °C, with a detection limit as low as 1 ppm, a gas response of 10.9 for 100 ppm triethylamine, and a 58 % shorter recovery time. In addition, it also exhibited excellent selectivity and repeatability. The gas adsorption model was additionally used to analyze the response and recovery process from an energy perspective. This work contributes insights into the sensitivity enhancement and response-recovery process modulation of spinel oxide gas sensors, mainly in terms of crystal structure and doping sites.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
DOI
高影响因子
Small
·
2025
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IF 12.1
Haiyang Shi,Lei Zhang,Xinhua Huang,Qingquan Kong,Abdukader Abdukayum,Yingtang Zhou,Guoyou Cheng,Sanshuang Gao,Guangzhi Hu
The design and fabrication of nanocatalysts with high accessibility and sintering resistance remain significant challenges in heterogeneous electrocatalysis. Herein, a novel catalyst is introduced that combines electronic pumping with alloy crystal facet engineering. At the nanoscale, the electronic pump leverages the chemical potential difference to drive electron migration from one region to another, separating and transferring electron-hole pairs. This mechanism accelerates the reaction kinetics and improves the reaction rate. The interface electronic structure optimization enables the CoFe/carbon nanotube (CNT) catalyst to exhibit outstanding oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performance. Specifically, this catalyst achieves an ORR half-wave potential (E₁/₂) of 0.895 V, outperforming standard Pt/C and RuO₂ electrocatalysts in terms of both specific activity and stability. It also demonstrates excellent electrochemical performance for OER, with an overpotential of only 287 mV at a current density of 10 mA cm⁻ 2 . Theoretical calculations reveal that the carefully designed crystal facets reduce the energy barrier of the rate-determining steps for both ORR and OER, optimizing O₂ adsorption and promoting the oxygen capture process. This study highlights the potential of developing cost-effective bifunctional ORR–OER electrocatalysts, offering a promising strategy for advancing Zn–air battery technology.
研究领域:
材料科学
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电化学
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催化科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Lina Zhang,Ziren Wan,Jia Deng,Fangzhou Li,Jingqi Dong,Wulin Yang,Shaodong Xie,Guanghe Li,Fang Zhang
The catalytic membrane, combining confinement effect with advanced oxidation processes , exhibits great potential as an efficient technology for removing contaminants and mitigating membrane fouling . Herein, the Prussian blue analogues (PBAs) functionalized graphene oxide (GO) membranes, referred as PGMs, was successfully fabricated. It exhibited a package-like confined structure where Co–Fe PBAs were encapsulated within interconnected GO nanosheets . The surface properties, internal structure as well as the catalytic performance of PGMs were controlled by adjusting the amount of Co–Fe PBAs anchored on GO nanosheets . The designed PGM as efficient peroxymonosulfate activator exhibited exceptional catalytic performance, achieving complete removal of bisphenol A (BPA) with a retention time of 31 ms. The corresponding first-order rate constant was 6000 min −1 , which surpassed conventional batch system by four orders of magnitude (0.2194 min −1 ). Moreover, the redox cycle involving Fe 2+ and Co 3+ , coupled with the effective suppression of ion leaching from Co–Fe PBAs nanoparticles (<10 μg/L) through GO protective layers, ensured the stable catalytic performance of PGM over 144 h. This study employs a novel approach to confine catalytic nanoparticles within two-dimensional nanosheets, demonstrating the potential applications of the resulting confined membrane in water treatment.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 21.1
Jinhui Zhang,Jianglin Liu,Dalang Chen,Xiaofei Wang,Dongjie Yang,Xuliang Lin,Xueqing Qiu
The development of efficient and robust bifunctional oxygen electrocatalysts is crucial for advancing rechargeable zinc-air batteries. Although bimetallic composites are promising, conventional doping strategies often lack precise structural control. Herein, we report a sustainable synthesis of Co/Fe heterojunction catalysts from biorefinery lignin, incorporating low-cost Zn as a structural regulator. Zn spacers suppress CoFe alloy crystallization and promote Co 5.47 N formation, while Zn volatilization induces in situ carbon nanotube growth to enhance electronic structure and charge transport. The resulting Zn-CoFe@NLC catalyst exhibited favorable bifunctional performance, with a half-wave potential of 0.84 V for the oxygen reduction reactionand a high kinetic current density (17.2 mA cm -2 at 0.8 V). When implemented in zinc-air batteries, it achieved long cycling stability exceeding 1300 h (at 5 mA cm -2 ) and 1550 h (at 10 mA cm -2 ), more than 2.5 times that of noble metal catalyst (600 h at 10 mA cm -2 ). DFT calculations revealed that the CoFe-Co 5.47 N interface acted as an electron redistribution hub, synergistically enhancing the intrinsic activity of Co/Fe sites. This work underscores the promise of lignin as a sustainable precursor and establishes a generalizable route for rational structural engineering of bimetallic electrocatalysts for energy storage.
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
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IF 4.65
Yuanming Deng,Xi Zou,Zairan Liu,Jinzhi Wang,Zhong Wang,Jiaoning Tang
Here we present a simple method to prepare a highly efficient three components nanocomposites via thermal degradation of layered double metal hydroxides (LDHs)@polyvinyl alcohol (PVA) composites. Co 7 Fe 3 /CoFe 2 O 4 @C obtained from this method is applied to activate peroxymonosulfate (PMS) to degrade polluted organics and showed excellent performance. The best removal RhB efficiency of Co 7 Fe 3 /CoFe 2 O 4 @C (Co/Fe = 1:1) is near 100% within 10 min and the lowest ions elution (∼0.05 mg/L) under pH = 7, which is also better than the performance of the precursor Co–Fe LDH. Through further cycling experiments and degradation of p -nitrophenol, the stability and catalytic performance of the catalyst were verified. Finally, free radical scavenging experiments prove ·OH and SO 4 · - radicals participating in the reaction, which are the key factors for degradation. Based on the above, the derivation of the mechanism of Co 7 Fe 3 /CoFe 2 O 4 @C (Co/Fe = 1:1) catalyzing PMS to degrade polluted organics was proposed, and we consider this catalyst has great application prospect.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）