Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
He Xun,Yao Yongchao,Zhang Min,Zhou Yilei,Zhang Limei,Ren Yuchun,Dong Kai,Tang Hong,Nan Jue,Zhou Xingli,Luo Han,Ying Binwu,Yu Qi,Luo Fengming,Tang Bo,Sun Xuping
Seawater electrolysis driven by offshore renewable energy is a promising avenue for large-scale hydrogen production but faces challenges in designing robust anodes that suppress surface chlorine reactions and corrosion at high current densities. Here we report a strategy by selectively docking PW 12 -polyoxometalate (PW 12 -POM) onto Fe sites of CoFe hydroxide anode to modulate the electronic structure of adjacent Co active centers and regulate Cl⁻/OH⁻ adsorption for efficient alkaline seawater oxidation. Our CoFe-based anode achieves low overpotentials, high catalytic selectivity, and notable durability, with continuous operation at 1 A cm⁻² for over 1300 hours and at 2 A cm⁻² more than 600 hours. Theoretical calculations and ex situ/in situ analyses reveal that PW 12 -POM coordination at Fe sites stabilizes Fe, suppresses its leaching, modulates Co acidity, promotes OH⁻ adsorption, and protects metal sites from Cl⁻ corrosion.
研究领域:
电化学
·
材料科学
·
能量转换
·
催化
·
可再生能源
·
表面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Liye Shuai,Qun Li,Jia Liu,Jiabin Wu,Xinning Huang,Jianglong Yu,Jinxiao Dou,Huaiguang Li,Xingxing Chen
The rational design of efficient photoanodes is essential for advancing solar-driven water oxidation. This study addresses the intrinsic challenges of bismuth vanadate (BiVO 4 ), such as sluggish charge kinetics and severe surface recombination, through the construction of a ternary composite photoanode via synergistic interfacial modification and cocatalyst integration. A hierarchical architecture was fabricated through sequential low-temperature chemical bath deposition and electrodeposition, integrating a CoFe-layered double hydroxide (CoFe-LDH) interlayer and nickel-hydroxynitrate (Ni 2 (NO 3 ) 2 (OH) 2 ) onto BiVO 4 substrates. The optimized BiVO 4 /CoFe-LDH@Ni 2 (NO 3 ) 2 (OH) 2 photoanode achieves a photocurrent density of 5.57 mA/cm 2 at 1.23 V vs. reversible hydrogen electrode (V RHE ) under Air Mass 1.5 Global (AM 1.5G) illumination, accompanied by a 251 mV cathodic shift in onset potential. Comprehensive characterizations-including X-ray photoelectron spectroscopy (XPS), open-circuit photovoltage (OCP) decay, time-resolved photoluminescence (TRPL) decay, electron paramagnetic resonance (EPR) and Kelvin probe force microscopy (KPFM)-reveal that the oxygen vacancy (O v )-rich CoFe-LDH@Ni 2 (NO 3 ) 2 (OH) 2 layer facilitates efficient charge transfer within BiVO 4 and generates a pronounced built-in electric field, thereby significantly enhancing interfacial charge separation. Concurrently, density functional theory (DFT) calculations demonstrate that the interfacial effect of CoFe-LDH@Ni 2 (NO 3 ) 2 (OH) 2 substantially lowers the thermodynamic barrier for the oxygen evolution reaction (OER). This study offers fundamental insights for fabricating high-efficiency BiVO 4 -based photoanodes.
研究领域:
材料科学
·
物理化学
·
能源化学
·
光催化
·
半导体电化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2021
·
IF 4.837
Yelin Zhu,Dafeng Zhang,Fengqin Chang,Jian Zhu,Ping Wang,Fang Tan,Xiaohua Li,Lei Li,Guangzhi Hu
In this study, CoFe 2 O 4 –CoFe microspheres were synthesized using a simple hydrothermal method and treated in a furnace at a high temperature. The structure and morphology of the CoFe 2 O 4 –CoFe microspheres were well characterized by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) pattern, and X-ray photoelectron spectroscopy (XPS). The glassy carbon electrode (GCE) modified with CoFe 2 O 4 –CoFe as an electrochemical sensor exhibited excellent electrochemical activity for the detection of both Pb(II) and Cd(II) ions via differential pulse anodic stripping voltammetry (DPASV). The related measurement conditions of the proposed electrochemical sensor were optimized by changing the deposition potential, deposition time, and pH value of the electrolyte. Under optimized conditions, the CoFe 2 O 4 –CoFe-based electrochemical sensor exhibited broad linear ranges of 5.0–400 and 5.0–320 μg L −1 with limits of detection (LODs) of 0.50 and 0.26 μg L −1 for the Cd(II) and Pb(II) ions, respectively. In addition, the results of the interference and actual water sample analyses showed that the peak currents of target ion were not strongly interfered with, by 50-times interference ions, such as Al(III), As(III/V), Ca(II), Cr(III), and Zn(II). The proposed CoFe 2 O 4 –CoFe microsphere-based electrochemical sensor can be potentially applied to detect Pb(II) and Cd(II) ions in untreated tap water and other environmental samples, simultaneously.
研究领域:
材料科学
·
电化学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhen Wang,Ying Fang,Ying Yang,Bo Qiu,Haipu Li
A rational design of high-performance catalysts with peroxymonosulfate (PMS) activation and arsenic adsorption capacities for the removal of p -arsanilic acid ( p -ASA) is in high demand but remains a significant challenge. Herein, vacancies-rich metal–organic frameworks (MOFs) were constructed by room-temperature co-precipitation procedure, and the magnetic CoFe encapsulated in N -doped carbon nanotubes (CoFe- N -CNTs) were prepared using MOFs template by an annealing process under a nitrogen atmosphere. The synthesis conditions of CoFe- N -CNTs were optimized by tuning Fe/Co ratio and carbonization temperature. The CoFe- N -CNTs/PMS system showed favorable removal performance, achieving complete degradation of 46 μM p -ASA within 3 min and a total arsenic removal efficiency of 98% within 30 min at 0.1 g/L catalyst and 400 μM PMS. The degradation rate ( k obs ) and total arsenic removal efficiency towards p -ASA by CoFe- N -CNTs/PMS system were 6.7 and 2.7 times of those in the MOFs without vacancies-derived catalyst/PMS system, respectively. CoFe- N -CNTs/PMS system exhibited robust and efficient performance over a broad range of pH (4.5–9.0) and in different water matrices. Scavenging experiments and electron paramagnetic resonance (EPR) results demonstrated that non-radical singlet oxygen ( 1 O 2 ), sulfate radicals (SO 4 − ), hydroxyl radicals ( OH), and superoxide (O 2 − ) were involved in p -ASA decomposition. Electron transfer and direct oxidative transfer process (DOTP) also contributed to p -ASA degradation. High-performance liquid chromatography coupled with inductively coupled plasma mass spectrometry (HPLC-ICP-MS) analysis indicated that the arsenic moiety was cleaved from p -ASA in the form of As(III) and then rapidly oxidized to As(V). X-ray photoelectron spectroscopy (XPS) analysis indicated the removal of inorganic arsenic followed the mechanism of the inner-sphere complex. This study highlights the in-situ synthesis of CoFe- N -CNTs with outstanding activities for catalytic degradation and arsenic removal of organoarsenicals.
研究领域:
环境科学
·
催化材料
·
污染控制
✓ 已验证
产品关联
DOI
高影响因子
Green Energy & Environment
·
2020
·
IF 6.395
Revanasiddappa Manjunatha,Li Dong,Zibo Zhai,Jianyi Wang,Qianru Fu,Wei Yan,Jiujun Zhang
Rational design and synthesis of low-cost trifunctional electrocatalysts with improved stability and superior electrocatalytic activity for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) are highly desirable but remain as the bottlenecks at the current state of technology. In this paper, the cobalt-iron (Co–Fe) composite supported on nitrogen-doped carbon nanotubes (CoFe composite/NCNTs) is synthesized. The intrinsic OER and HER catalytic activities of this CoFe composite/NCNTs composite are significantly improved with palladium (Pd) nanocluster decoration [Pd-coated (CoFe composite/NCNTs)]. The as-prepared Pd-coated (CoFe composite/NCNTs) catalyst exhibits excellent trifunctional electrocatalytic activity and stability due to the interfacial coupling between Pd and (CoFe composite/NCNTs). This catalyst is successfully employed in the water electrolysis cell as both OER and HER electrode catalysts, flexible rechargeable Zn-air battery as the bifunctional ORR and OER electrode catalyst. The cell voltage of this catalyst-coated electrodes requires only 1.60 V to achieve 10 mA cm −2 current density for water electrolysis cell, which is comparable to and even better than that of Pt/C and Ir/C based cell. The primary Zn-air battery using this catalyst shows a constant high open-circuit voltage (OCV) of 1.47 V and a maximum power density of 261 mW cm −2 in the flooded mode configuration. Most importantly, a flexible Zn-air battery with this catalyst runs very smoothly without a change in voltage gap during flat, bending, and twisting positions.
研究领域:
材料科学
·
电化学
·
能源催化
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Weixuan Guo,Sixiang Zhuang,Ying Peng,Yi Shen,Yungui Li,Suorong Zhang,Qile Fang
Designing high-performance heterostructure catalysts for peroxymonosulfate (PMS) activation is a promising research area. PMS-driven organic pollutant degradation via radical pathways usually suffers from the interference of other coexisting matters. In this study, we took a source design approach and employed a self-templating strategy using Prussian blue analog (PBA) precursors to fabricate CoFe/C heterostructure catalysts dominated by a nonradical pathway. Slow-speed coordination renders the CoFe PBA precursor with a highly ordered crystal structure and fewer coordinated water, resulting in an ideal carbon-encapsulated CoFe bimetallic catalyst (CoFe-S-T) with more high-valence metals and a graphitized carbon layer in its heterostructure; the obtained catalyst is proven to have superior catalytic performance for tetracycline (TC) degradation through a nonradical pathway in PMS-driven oxidation . The high Co III /Co II ratio and surface oxygen content make CoFe-S-T an excellent catalyst by boosting the generation of 1 O 2 , which is the predominant active species. In addition, CoFe-S-T has a high proportion of graphitized carbon layers, which significantly improves the direct electron transfer pathway. Thus, utilizing precursor design in a self-templating strategy is an effective method to synthesize high-performance heterostructures for PMS-driven organic pollutant degradation.
研究领域:
环境科学
·
材料科学
·
化学工程
·
催化
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Qingsong Jiang,Zhijie Chen,Muyan Bai,Shan Liu,Xiangyang Lou,Shimao Deng,Yangzi Shangguan,Xiaosong Gu,Qiang Zeng,Songhe Yang,Ying Liu,Hong Chen
Developing green and efficient techniques to convert plastic wastes into functional materials is attractive and remains highly challenging. This study employs a hydrothermal combining with pyrolysis process for constructing a Co 3 Fe 1 @C heterostructure from the polyethylene terephthalate (PET) waste-mediated metal-organic frameworks. The as-obtained Co 3 Fe 1 @C shows a core-shell structure and possesses good performance towards water electrolysis. The Co 3 Fe 1 @C can attain the current density of 100 mA cm −2 with an overpotential of 250 mV for oxygen evolution reaction (OER). In addition, the bifunctional Co 3 Fe 1 @C can realize the overall seawater electrolysis at 50 mA cm −2 with good stability for 280 h driven by a 2.2 V commercial silicon solar cell. Overall, this study demonstrates a green chemistry approach to simultaneous plastic waste upcycling and cost-effective electrocatalyst fabrication, which may stimulate further research on the “waste materialization” approach to converting solid waste into highly efficient catalysts for various chemistry and energy industry applications.
研究领域:
材料科学
·
环境科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Xiao Xia,Yifei Wei,Yeshun Tian,Changliang Wu,Guangbin Duan,Zongming Liu,Chenyu Jiang
Developing chloride-tolerant electrocatalysts for seawater splitting remains challenging due to severe anode corrosion and competing chlorine evolution reaction (CER). Here, we propose a boric acid etching strategy to transform CoFe layered double hydroxide (LDH) into BO 3 3- -modified CoFeB catalysts, which simultaneously achieve exceptional oxygen evolution reaction (OER) activity (247.4 mV @ 100 mA cm −2 ) and corrosion resistance in alkaline seawater. The interfacial BO 3 3− species suppress chloride adsorption while promoting generation of highly active Co 3+ sites, as theoretically verified by density functional theory calculations showing preferential OH − adsorption and optimized OOH∗ intermediate binding. When integrated in membrane-free electrolyzers (Pt/C || CoFeB), the system delivers ultralow voltages (1.847 V@500 mA cm −2 ) with satisfactory stability (150 h@500 mA cm −2 ), significantly outperforming commercial RuO 2 counterparts. This work establishes an anion-engineering paradigm through controlled etching, offering a cost-effective scalable solution for industrial hydrogen production from seawater.
研究领域:
电化学
·
材料科学
·
能量转换
·
催化
·
纳米技术
·
理论化学
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2024
·Vol. 16
·期 13
·1818
·
IF 3
Tongke Hu,Yazhen Chen,Xiaolan Guo,Yongjun Peng,Jianhua Cheng
The exploration of efficient, low-leaching, and recyclable transition-metal-based catalysts is of great importance for the removal of pollutants from peroxymonosulfate (PMS) in water purification processes. In this study, a bimetallic CoFe@CSC-700 composite was prepared by an alkaline gel pyrolysis reduction method using chitosan as a forming agent and applied to activate PMS to degrade levofloxacin (LEV). The leaching concentration of both cobalt and iron ions in the CoFe@CSC-700 catalyst was reduced by about 8-fold compared to the monometallic composite pellet catalyst. In addition, the removal efficiency of the CoFe@CSC-700 catalyst can still reach 90% after five cycles, showing good recyclability, recoverability and stability. Both free radical pathways (SO4·−, ·OH, and ·O2−) and non-free radical pathways (1O2) were detected in the oxidation reaction, with free radical pathways as the main contributor. The possible degradation pathways of LEV were proposed by LC-MS tests. Overall, this study provides new insights into the construction of efficient and stable PMS catalysts for wastewater treatment.
研究领域:
环境科学
·
催化
·
水净化
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Qian Kong,Chengcheng Yu,Qing Lu,Xingyu Yang,Tongguang Xu,Qi Song,Huatong Li,Zhaoshuo Yuan,Hongyu Liu,Qian Qiao,Gang He,Yufan Wang,Linglong Yao,Xiaoping Dai,Xin Zhang
The electrolysis of water for hydrogen production has gained increasing attention as a sustainable and efficient method to obtain high-purity green hydrogen. The development of efficient catalysts for hydrogen evolution is crucial in order to achieve this target under industrial conditions. The objective of this work is to synthesize a highly efficient F-Co x Fe y (PO n ) z /IF catalyst with ultra-low impedance for hydrogen evolution in electrolytic water by incorporating metal phosphatides into metal oxide nanoclusters through a controlled two-step process involving melting and electrodeposition. The nano-heterostructure of F-Co x Fe y (PO n ) z /IF exhibits a low overpotential of 276 mV at a current density of 1000 mA cm −1 , while having an electrochemical impedance comparable to commercial Pt/C/CP (0.41 Ω), and long-term stability up to 200 h in 1 M KOH electrolyte. The synergistic effect of crystal/amorphous heterojunctions, F doping, and oxygen vacancies further enhances the kinetics of water cracking. Impressively, when combined with NiFeCo LDH/NiS/NF as membrane electrodes, F-Co x Fe y (PO n ) z /IF || NiFeCo LDH/NiS/NF achieves a water decomposition voltage of 2.03 V at a current density of 1000 mA cm −2 and demonstrates stable operation for over 500 h, showing great potential for large-scale commercial production.
研究领域:
电化学
·
催化
·
材料科学
·
氢能
·
纳米技术
·
能量转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Tao-Long Wu,Xiu-Niang Tan,Tian-Tian Nong,Yu-Jie Pan,Peng-Fei Qiu,Jia-Qi He,Yan Zhou,Xue-Cai Tan,Zai-Yin Huang,Lei Han
Owing to the high specific surface area, rich active sites, well-controlled morphology and structural stability with tunable compositional components, the rational combination of hybrid nanostructured materials from metal-organic frameworks templates has become highly attractive and still of great challenge for supercapacitors. In this work, three bimetallic metal–organic frameworks Co 1-x Fe x -MOF-74/NF ( x = 0.25, 0.5 and 0.75 ) nanoarrays with different proportional Co/Fe ratios on nickel foam have been successfully designed and fabricated via in-situ interfacial growth method, which were further controllable converted to α-Co(OH) 2 /CoFe 2 O 4 nanoarrays with different proportional Co/Fe ratios CF-x/NF ( x = 0.25, 0.5 and 0.75 ) without structure collapse through alkaline etching process. Among them, the transformation of the bamboo-shoot-like CF-0.75/NF electrode displays excellent electrochemical properties with high area capacitance (3941.14 mF/cm 2 at 2 mA/cm 2 ), good rate capability, low resistances and remarkable cycling stability. The CF-0.75//AC ASC device delivers a high energy density of 0.16 mWh/cm 2 at a power density of 0.756.1 mW/cm 2 . And this CF-0.75//AC ASC device exhibits a good cycling stability and practical application in energy storage field. This strategy could be extend to form other unique bimetallic hybrids nanoarrays architectures with enhanced electrochemical activity for high-performance energy storage devices.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Linhao Wang,Jia Wei,Jiangkai Huo,Wei Ji,Xiaohui Zhang,Yanan Li,Jiamei Li,Nan Cui,Wenhao Yan,Yuxin Zhao,Jun Li,Ju Wang
Herein, an electron-optimized core-shell CoFe alloy-carbon composite (CoFeC) was developed from prepared CoFe Prussian blue analogues (CoFe PBAs) through pyrolysis and applied for peracetic acid (PAA) activation. Characterization analysis and theoretical calculations indicated that the Co sites as the primary active centers, with the presence of C and Fe in CoFeC significantly narrowed the difference between the d-band center ( Ɛ d ) and the Fermi level ( E F ), thereby reducing PAA adsorption energy on Co sites and enhancing electron transfer. The identification of reactive species confirmed that acetylperoxy radicals (CH 3 C(O)OO·) and singlet oxygen ( 1 O 2 ) were the dominant species driving the reaction. The CoFeC/PAA system demonstrated exceptional pollutant degradation efficiency, achieving nearly 100% removal within 30 min, along with strong interference resistance and high durability in continuous-flow reactors. This work provided novel insights into the activation of PAA by bimetallic carbon catalysts and offered guidance for the development of efficient and sustainable water treatment technologies.
研究领域:
环境科学
·
材料科学
✓ 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）