Catalysts
·
2024
·Vol. 14
·期 4
·279
·
IF 3.8
Yan Wang,Wuxin Liu,Rongzhe Wang,Qing Wang,Shaohua Luo,Pengqing Hou,Yahui Zhang,Shengxue Yan,Xin Liu,Jing Guo
Fe/N-doped carbon (Fe-NC) is an excellent base-metal catalyst for use in an electrocatalytic oxygen reduction reaction (ORR) with high activity. In this paper, graphite phase carbon nitride (g-C3N4) was first obtained from the pyrolyzing of melamine, and then different proportions of FeCl3were separately doped into g-C3N4to further prepare the Fe-NC catalyst. The Fe-NC catalyst was applied in an ORR reaction, and the results show that the Fe-NC catalyst doped with 0.5 mmol FeCl3possesses exceptional electrocatalytic performance, with an onset potential of 0.96 V and a half-wave potential of 0.81 V, which approaches that of a Pt/C catalyst. Meanwhile, the Fe-NC catalyst displays high stability and methanol resistance. The results supply a new way to prepare efficient ORR electrocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·850
·
IF 4
Qiongqiong He,Xuewen Wu,Ping Ma,Zhaoyang Song,Xiaoqi Wu,Ruize Gao,Zhenyong Miao
Phenol is a refractory organic pollutant that is difficult to degrade in wastewater treatment, and efficiently and stably degrading phenol presents a significant challenge. In this study, iron-doped humic acid-based nitrogen–carbon materials were prepared to activate peroxymonosulfate (PMS) for the degradation of phenol. The Fe-N-C/PMS system achieved a phenol degradation rate of 99.71%, which follows a first-order kinetic model, with the reaction rate constant of 0.1419 min−1. The phenol degradation rate remained above 92% in inorganic anions (Cl−, SO42−, HCO3−) and humic acid and the system maintained a 100% phenol removal rate over a wide pH range (3–9). The iron in the catalyst predominantly exists in the forms of Fe0and Fe3C, and Fe0, Fe2+/Fe3+are the main active sites that promote PMS activation during the reaction. Additionally, Fe-N-C has a large specific surface area (1041.36 m2/g). Quenching experiments and electron spin resonance (ESR) spectroscopy detected the active free radicals in the Fe-N-C/PMS system: SO4•−, •OH, O2•−, and1O2. The mechanism for phenol degradation was discussed, involving radical pathways (SO4•−, •OH, O2•−) and the non-radical pathway (1O2), in the Fe-N-C/PMS system activated by Fe0, Fe2+/Fe3+, sp2hybridized carbon, C-O/C-N, C=O, and graphitic nitrogen active sites. This study provides new insights into the synthesis of efficient carbon-based catalysts for phenol degradation and water remediation.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Haoyang Fu,Ruizhao Wang,Qianyu Xu,Minwang Laipan,Chenliu Tang,Weixian Zhang,Lan Ling
Typical antineoplastic agent doxorubicin (DOX) contamination is a major environmental concern and its efficient purification remains a daunting challenge so far. This work explored the potential of Fe/Pd-doped graphite carbon nitride (g-C 3 N 4 @Fe/Pd) for DOX removal from water, involving the removal performance, mechanism, and pathway. Structural characterization of g-C 3 N 4 @Fe/Pd showed that the metallic Pd clusters are decorated on the surface of uniformly distributed iron nanoparticles (~ 28 nm) on g-C 3 N 4 . The existence of g-C 3 N 4 effectively relieved the agglomeration and overgrowth of iron nanoparticles, the strong coupling effect among the Fe, Pd and N demonstrates the excellent DOX removal performance (k = 0.115 min −1 ) with versatility under different initial concentrations (30–150 mg/L) and material dosages (0.1–0.4 g/L). Three possible degradation pathways of DOX were proposed, where catalytic saccharide moiety elimination is the primary pathway. Importantly, intermediates exhibit lower toxicity and the final degradation product is efficiently adsorbed by g-C 3 N 4 @Fe/Pd.
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Jingye Cui,Huan He,Wanqi Shi,Zhicheng Liao,Danni Cui,Jianxiang Yang,Yixin Liu,Chaochao Lai,Bin Huang,Xuejun Pan
Microbial-derived extracellular polymeric substances (EPS) and iron minerals are ubiquitous in aquatic environments, and they can influence the fate of organic micropollutants such as 17α-ethinylestradiol (EE2). However, the interactions between EPS and iron minerals, and their influence on EE2 photodegradation, are seldom addressed in the literature. This study explored the effects of EPS derived from different aerobic or anaerobic microbials on the reductive dissolution of ferrihydrite (Fhy) and subsequent EE2 photodegradation, with emphasis on the impact of Fe-EPS complexes formation. In the dark, EPS could promote the reductive dissolution of Fhy via ligand-metal charge transfer, accompanied by Fe(III)-EPS complexes formation. Irradiation could further enhance such a dissolution process. Dissolved iron could accelerate the photolysis of protein and humic substances, triggering Maillard-like reactions that form the unsaturated medium- or high-molecular-weight polymers. The aerobic-EPS containing more proteins and humic substances photodegraded EE2 more effectively than anaerobic-EPS, with the triplet excited state playing a crucial role. In contrast, Fhy inhibited EPS-mediated EE2 photodegradation via light-shielding effect or photosensitizers oxidative decomposition. The information obtained in this research would contribute to the understanding of photochemistry involving EPS, iron minerals, and steroid estrogens, providing new insights into their environmental behavior.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jingwen Ma,Jinhao Liu,Junbin Li,Ruiting Wang,Ying Tian
Electrocatalytic nitrate-to-ammonia reduction (e-NO 3 RR) provides a sustainable alternative to fossil-fuel-dependent Haber-Bosch processes. However, its practical application is hindered by limited ammonia yield and unsatisfactory faradaic efficiency (FE). In this work, hierarchical porous carbon nanofibers decorated with Fe 2 O 3 nanoparticles and Fe–N–C sites (Fe 2 O 3 /Fe SAC/HCNF) are synthesized through electrospinning-assisted templated pyrolysis. Structural characterization reveals that spatial confinement effect of the polymer suppresses the agglomeration of Fe 2 O 3 during the synthesis process and the core-shell structure enhances the stability Fe species under prolonged operational conditions, while the hierarchical porous hollow fibers serve as an integrated substrate, optimizing both the active sites and mass transfer pathways. The Fe SAC sites preferentially adsorb and activate NO 3 − , while the ultrafine Fe 2 O 3 site provide abundant active hydrogen for the subsequent reduction process. Accordingly, Fe 2 O 3 /Fe SAC/HCNF achieves an FE maximum of 87 % ± 4 % at −0.50 V, with a corresponding areal productivity of 1.5 ± 0.02 mmol h −1 cm −2 and excellent long-term stability. When incorporated into a Zn-NO 3 − battery as the cathode, the Fe 2 O 3 /Fe SAC/HCNF system exhibits outstanding electrochemical performance with high power density of 4.67 mW cm −2 and FE of 85 % ± 2 %. This study establishes a systematic strategy for synergistically enhance the performance of NO 3 RR to ammonia.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Qing Huang,Wen-feng Zhuge,Chen-dong Ling,Feng-ping Liu,Wei Huang,Cui-zhong Zhang,Jin-yun Peng,Xi-xu Qin
Abstrac t Herein, we have successfully developed a highly sensitive electrochemical sensing platform specifically designed for the detection of butylated hydroxytoluene (BHT) by using the composites of gold nanoparticles and hollow micro-nests like Fe-functionalized manganese dioxide (Fe-MnO 2 @Au NPs). Specifically, the hydrothermal method was used to synthesize Fe-MnO 2 with a three-dimensional hollow micro-nest structure. Subsequently, in situ growth of Au NPs on the Fe-MnO 2 surface was achieved using a mild chemical reduction at room temperature. The electrocatalytic properties of the material were enhanced by Fe-functionalized MnO 2 and decorated Au NPs. The composite material was used to construct an electrochemical sensor capable of detecting BHT in the range from 0.05 to 32.0 μM. The limit of detection was 13 nM (S/N = 3). It was confirmed that Fe-MnO 2 @Au NPs possessed excellent reusability and anti-interference ability for the detection of BHT. Furthermore, the sensor was successfully applied to the detection of BHT in edible oil and margarine samples, indicating the potential value of this work in the field of food analysis.
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Hui Li,Ronghao Wu,Long Zhou,Zuliang Chen
In this study, a novel C-ZIF-8@Fe/REEs composite, fabricated from one-step pyrolysis using ZIF-8@Fe adsorbed with rare earth elements (REEs) as precursors was successfully used to activate peroxymonosulfate (PMS) for efficient oxidation of Bisphenol A (BPA). The as-prepared C-ZIF-8@Fe/REEs exhibited high PMS activation performance, with an BPA removal efficiency exceeding 95 % within 120 min. Characterizations revealed that the REEs introduction increased the exposure of active sites, and facilitates the electron transfer. Electron paramagnetic resonance analysis and quenching tests confirmed that both radical (·OH, ·SO 4 − ) and non-radical ( 1 O 2 , high-valent metals, and electron transfer) pathways were involved in BPA degradation. Reasonable BPA degradation pathways were proposed by analyzing the results of LC-MS and DFT calculations. Additionally, toxicity assessments demonstrated a significant reduction in the toxicity of degradation products. Finally, the synthesized composite exhibited excellent reusability and stability in real wastewater fixed column bed experiments, with the removal efficiency still be higher than 70 % after 11 h operation. These findings demonstrate that the recovery REEs from mining wastewater is an effective strategy in developing a highly efficient Fenton-like catalysts, and also highlight the promising role of using C-ZIF-8@Fe/REEs in wastewater treatment, particularly for the removal of organic contaminants.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Zhanpeng Tian,Shuangyi Li,Shumin Zou,Heping Li,Zhiming Zou,Xiuqing Zhang,Qun Tang
A new dual-functional Fe-ICA complex nanocrystal featuring intrinsic antioxidant and colorimetric ammonia-sensitive functions was designed and then combined with cellulose nanocrystal (CNC) to synergistically fortify potato starch (PS) matrix for developing advanced smart active packaging films. The influence of different Fe-ICA: CNC weight ratios on the structural, physical performances, and functional features of PS film was fully studied. Results revealed that the optimized film (PS/Fe-ICA 2 /CNC 4 ) demonstrated significantly improved mechanical strength (8.26 MPa), ductility (27.11 %), hydrophobicity (94.6°), and water/oxygen barrier performances, due to the synergistic effect of well-dispersed Fe-ICA/CNC. PS/Fe-ICA/CNC film was also endowed with potent UV-screening, antioxidant efficiency, colorimetric ammonia-sensitivity, long-term color stability, and biocompatibility. Besides, the PS/Fe-ICA/CNC film presented clear color alteration in response to shrimp spoilage, affirming its applicability for visually monitoring shrimp freshness. This work offered a new ammonia-sensitive smart packaging strategy by combining functional Fe-based complex and CNC through synergistic effects for freshness monitoring.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Xianghui Meng,Yuanjie Zhang,Zhiqiang Wang,Zihan Wang,Huiqing Zhao,Ting Wang,Zongge Li,Wenjun Kang,Haibo Li
A defect-rich carbon catalyst with highly dispersed Fe/Zn/Ce species (FeZnCe-NC-1000) is synthesized via a controllable high-temperature pyrolysis strategy. Electrochemical characterizations reveal that FeZnCe-NC-1000 exhibits enhanced oxygen reduction reaction activity in 0.1 M KOH, featuring favorable kinetics and a dominant 4-electron transfer pathway. It also shows excellent durability with minimal performance degradation after 5000 cycles and strong methanol tolerance. When integrated into zinc-air batteries, FeZnCe-NC-1000 outperforms commercial Pt/C, delivering superior open-circuit voltage, discharge rate performance, specific capacity, and maximum power density. These results demonstrate that FeZnCe-NC-1000 is a promising non-precious metal catalyst with great potential for practical applications in energy conversion and storage systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2014
·
IF 2.063
Jianrong Li,Jinsheng Chen,Yanke Yu,Chi He
The Fe–Mn–Ce/CP catalyst prepared by the incipient-wetness impregnation method was investigated for elemental mercury (Hg 0 ) removal in simulated coal-fired flue gas . The incorporation of Fe could remarkably enhance the SO 2 -resistance of Fe–Mn–Ce/CP catalyst at low temperature, and the existence of water vapor had negative impact on Hg 0 removal efficiency. More than 95% of Hg 0 could be removed at 100 °C under the conditions of 60 ppm HCl, 3% O 2 ( v/v ), 5% H 2 O ( v/v ) and 400 ppm SO 2 . Hg-TPD results indicated that Hg 0 adsorption amount decreased after the addition of H 2 O or SO 2 . The XPS results revealed that the incorporation of Fe could enhance the contents of high valence Mn x + (i.e., Mn 3+ /Mn 4+ ) and Ce 3+ species in the composite catalysts, which are favorable for the oxidation process of elemental mercury. The surface characteristics were not the primary factor determining the catalytic activity . Overall, the catalytic performance of the Fe–Mn–Ce/CP catalyst was closely related to the Fe 3+ state, high ratios of (Mn 4+ + Mn 3+ )/Mn 2+ and high content of not fully coordinated cerium species.
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2020
·
IF 7.864
Tian Tian,Ke Zhou,Yu-Sheng Li,Dong-Feng Liu,Han-Qing Yu
Phosphorus (P) recovery from wastewater can be completed by iron-involved autotrophic denitrification via forming Fe(III)–P precipitates and/or adsorbing P onto Fe(III) oxyhydroxides. However, so far, most studies focused on the final P-containing products, while the P-capturing pathways in such a process remain unclear. In this work, autotrophic iron-dependent denitrification (AIDD) was used as a typical anoxic iron-involved P-capturing biosystem to investigate the main P recovery pathways. The AIDD biosystem showed a relatively stable capability of capturing P coupled with nitrate reduction. Direct formation of amorphous Fe(II)–P precipitates after the phosphate was fed, followed by microbially driven oxidation into Fe(III)–P minerals, was found to be the primary pathway for the P capture. In addition, adsorption of phosphate onto the formed iron oxyhydroxides also contributed to the P recovery. This work provides better understanding about recovering P in AIDD and iron-involved denitrification and highlights the important roles of iron oxidizers in the iron-related biological wastewater treatment processes.
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2017
·
IF 0
Ge Ma,Zhen Chen,Zhihong Chen,Mingliang Jin,Qingguo Meng,Mingzhe Yuan,Xin Wang,Jun-Ming Liu,Guofu Zhou
In this work, we have prepared a series of efficient visible-light-driven WO 3 /Fe(III) nanofiber photocatalysts by electrospinning and impregnation method. The physical and optical properties of the prepared photocatalysts were characterized by field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and the nitrogen adsorption analysis. Under the irradiation of visible light , all the prepared WO 3 /Fe(III) nanofiber photocatalysts exhibit much higher activity for degrading methyl orange (MO) solution than the pristine WO 3 nanofibers, and reaches 94.6% under visible light irradiation for 3 h when the relative grafting amount of Fe(III) ions was 0.003 by mass percentage. Grafting of Fe(III) ions on the surface of WO 3 nanofiber could enhance its visible-light absorption and reduce the photo-generated electron-hole pairs recombination due to the interfacial charge transfer (IFCT) effect, and thus improve its photocatalytic activity , which were further verified by the ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS), photoluminescence (PL) and the ns-level time-resolved fluorescence decay spectrum measurements.
✓ 已验证
DOI
危险品化学品经营许可证（带存储）