ACS Catalysis
·
2023
·
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.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Hui Li,Xinlei Ren,Wenxue Pan,Shiting Zhu,Jin Zhang,Zhiyuan Yang,Liu Qian,Yueying Wang,Yujing Huang,Lin Guo,Minghui Xiang
The reasonable control of the structure of metal–organic frameworks (MOFs) is a promising strategy for improving their peroxymonosulfate (PMS) activation activity. In this study, ZIF-67 @ZIF-8 was used as a template to prepare bimetallic core–shell Co-Fe@NC via Fe doping and high-temperature carbonization . Co-Fe@NC maintained the core–shell structure of the original MOF, in which cobalt was uniformly distributed in the nitrogen-doped graphite carbon skeleton and the surface of the graphite carbon skeleton was covered with iron. With the synergistic effect of the nitrogen-doped graphite carbon skeleton, iron, and cobalt, 100% of tetrabromobisphenol S (TBBPS) was removed in 60 min with k obs = 0.062 min −1 in Co-Fe@NC-0.2/PMS system. The addition of iron increased the graphitization degree with I D /I G value increased from 0.98 (Co@NC) to 1.034 (Co-Fe@NC-0.2) and electron transfer rate of the carbon skeleton. Besides, the Co leaching was effectively attenuated from 1.86 mg/L(Co@NC) to 0.78 mg/L (Co-Fe@NC-0.2) by the core-shell structure and bimetal strategy. Both O 2 · - and 1 O 2 contributed to the degradation of TBBPS according to quenching experiments. TBBPS was deeply degraded into small-molecule compounds through three degradation pathways by the Co-Fe@NC-0.2/PMS system. This study provides a new strategy for designing highly efficient bimetal–carbon composites for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2024
·Vol. 14
·期 3
·667-672
·
IF 4.4
Qiulan Huang,Ruiqin Ren,Jia Li,Muhammad Waqas,Pan Chen,Xiaotian Liu,Dujuan Huang,Zhongyun Yang,Xinglan Peng,Du-Hong Chen,Youjun Fan,Wei Chen
Fabricating highly competent and cost-effective catalysts is essential for promoting the sluggish kinetics associated with the oxygen reduction reaction (ORR). Herein, a new type of Fe, Co decorated porous carbon composite catalyst co-doped with S and N (FeCo–SNC) was prepared by a simple carbonization process. Interestingly, FeCo–SNC inherits not only the pore structure but also the large surface area of the ZIF-67 dodecahedron. Furthermore, the electronic configuration of the two catalytic centers in Fe–N–C and Co–NC was customized. On the basis of synergetic coordination between the two active sites, the fabricated FeCo–SNC showed prior stability for the ORR even after 10 000 cycles of cyclic voltammetry measurement, besides the great limiting current density of 5.99 mA cm−2 and high half potential of 0.856 V (vs. reversible hydrogen electrode), surpassing the commercially available Pt/C catalyst. Moreover, the primary active site of Fe–N–C was regulated, providing the highest catalytic activity for the ORR. This research offers a new perspective on enhancing carbon-based catalysts for the ORR without relying on precious metals and introduces a strategic method for controlling active centers.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhu Xiong,Yuhang Cheng,Kaige Dong,Mahmud Sakil,Zhu Wang,Liguo Zhang,Tangfu Xiao,Gaosheng Zhang,Shuaifei Zhao
Super trace thallium(I) (Tl + ) is still highly toxic and its removal from surface water is challenging. Here, we developed a new adsorptive membrane by immobilizing bimetal (cobalt and iron) Prussian blue analogues (Co@Fe-PBAs) on a polytetrafluoroethylene microporous membrane (Co@Fe-PBAs-M). The prepared membrane displayed precise adsorption of trace Tl + (50 μg/L) from complex water. A variety of interfering factors, such as water pH, competitive adsorption of positive ions (Na + and K + ) and negative ions (CO 3 2– and PO 4 3- ), natural organic matters (e.g., fulvic acid and bovine serum albumin) were evaluated during Tl removal. The composite membrane showed high removal efficiency (over 80 %) during long-term dynamic membrane separation of surface water containing super trace Tl + (<2.0 μg/L), breaking through the adsorption limitation in ultralow concentration of Tl + . The unique bimetal electron transfer of Co@Fe-PBAs-M reinforced the adsorptive performance to Tl + through dual ion exchange and intercalation. In the treatment of real Pearl River water containing 0.5 μg/L of Tl + , our membrane effectively reduced the Tl + concentration to 0.04 μg/L during 6-h continuous separation, which was far below the required level for drinking water (i.e., 0.1 μg/L). This work offers a promising solution for safe drinking water by remedying ultralow Tl + contaminated surface water.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xin Liu,Liping Yang,Li Chen,Shuxia Li,Peng Li,Yongrong Sun,Ning Kang,Chenglong Wang
It is still challenged to propose a straightforward and in-situ growth method of fabricating perovskite-type metal oxide films with dense and uniform surface coverage. This paper presents a simple strategy to prepare LaBO 3 (where B = Ni, Co, Fe, Mn) films by metal oleate (MO) route, in which metal oleates (La(OA) 3 and (B(OA) x , x = 2 or 3) serve as effective ligands to inhibit the self-aggregation among crystal grains. The as-prepared LaNiO 3 film with uniform and dense surface shows a reduced contact angle (31.5° vs 51.2°) and surface roughness (Ra = 14.2 vs 23.9 nm) compared with film prepared by Sol-gel (SG) method. Finally, the LaNiO 3 film by MO route is successfully employed as hole transport layer (HTL) in perovskite solar cells (PSCs) to obtain a power conversion efficiency (PCE) up to 15.62 %, which is 1.54 times that of PSCs by SG method. This work opens an avenue for fabricating LaBO 3 films with dense and uniform surface coverage by MO route.
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2024
·
IF 3.5
Lijuan Ma,Han Wang,Jing Zang,Xinna Wang,Hao Li,Yanwei Li,Yanhui Li
The rational design of efficient, stable, low-cost non-precious metal-based electrocatalysts with enhanced oxygen reduction reaction (ORR) activity has attracted widespread attention. In this study, a novel electrocatalyst, Fe/Co-N-MWCNT, was prepared by in-situ growth of ZIF-8 and Fe/Co-Phen on multi-walled carbon nanotubes (MWCNTs), then pyrolysis under different temperature to obtain optimal one. During the pyrolysis process, the incorporation of Fe and Co facilitated the formation of metal active sites and Fe-Co alloy, thereby promoting electron transfer and enhancing the ORR activity. Compared to Pt/C (E1/2 = 0.854V, JL = 4.90 mA cm-2), Fe/Co-N-MWCNT demonstrated a comparable half-wave potential (E1/2 = 0.812V) and an enhanced limiting current density (JL = 5.37 mA cm-2). Furthermore, Fe/Co-N-MWCNT was stable and showed no significant change after 2000 cycles, with only a negative shift of 7 mV in E1/2. Ampere response testing revealed that the current decay of Fe/Co-N-MWCNT after 10000 s was only about 7.8%, while that of Pt/C was about 18.4%. Due to its excellent catalytic stability, Fe/Co-N-MWCNT was demonstrated to be an excellent candidate for rechargeable zinc-air batteries. The outstanding electrocatalytic performance of Fe/Co-N-MWCNT can be attributed to its high pyridinic nitrogen content, the unique structure and abundant metal active sites.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2025
·
IF 2.9
Jiaqi Li,Yidan Zhang,Pingyu Luo,Chun Li,Fanming Zeng,Tiantian Sun,Hanhui Lei,Xiaoteng Liu,Chunbo Liu
Persulphate-based advanced oxidation technology efficiently and cost-effectively removes organic dyes from water but designing stable photocatalytic systems and understanding their reaction mechanisms remain key challenges. Metal–organic frameworks (MOFs) have attracted considerable research attention for degrading organic pollutants owing to their high porosity, tunable structure, and ease of modification. In this study, a series of M-MOF-74 (M = Co, Fe, Ni) photocatalysts are synthesized by a hydrothermal method for methylene blue (MB) degradation. Among them, the Co-MOF-74 photocatalytic synergetic peroxymonosulfate system exhibits high catalytic activity after 30 min of visible light irradiation. MB degradation efficiency reaches 94.8%, and the reaction rate constant is 0.210 min−1, which is approximately 19.44 times higher than the reaction rate constant of the original Co-MOF-74. Compared with Fe-MOF-74 and Ni-MOF-74, Co-MOF-74 exhibits better photocatalytic performance due to the dynamic changes in the valence state of cobalt, which more effectively facilitate the activation of PMS. In addition, this study analyses the possible degradation pathways of MB in water and toxicological evaluations of intermediate products, providing new insights for the effective removal of dyes in water.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
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.
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
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.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
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).
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 15
·1-12
·
IF 2.8
Pan Yusong,Zhu Yuan,Wang Yuanqing,Huang Run,Pan Chengling
Based on the strong capability of transition metal ions for peroxymonosulfate (PMS) activation and highly affinity of MoS 2 towards PMS, thus decorating MoS 2 with transition metal ions would efficiently activate PMS for degradation of organic pollutants. In this work, Co/Fe co-doped MoS 2 catalyst were synthesized by simple chemical method. The prepared Co/Fe co-doped MoS 2 catalyst displayed excellent catalytic activity for organic pollutant degradation. The removal efficiency of RhB and MB is 99% in 6 min and 98% in 15 min under PMS system, respectively. Both the capture experiment and EPR results verified that 1 O 2 played an important role in the organic pollutant degradation process in PMS system. The catalytic mechanism revealed that the synergistic effect between Mo ion and Co/Fe ions is beneficial for boosting the catalytic properties of Co/Fe co-doped MoS 2 catalyst. The cycle experiments confirmed that Co/Fe co-doped MoS 2 possesses excellent chemical stability and re-usability.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
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.
✓ 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）