MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
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IF 4.6
Rongrong Yu,Jingjing Wang,Xinyu Zhi,Danyi Yang,Yongqi Zhao,Guifeng Chen,Chengchun Tang,Yi Fang
With growing concerns about antibiotic contamination in water environments, developing efficient photocatalysts for tetracycline (TC) degradation has become imperative. In this study, a novel nanoflower-like BiOI/UiO-66(Ce/Fe) S-scheme heterojunction photocatalyst was developed for efficient TC degradation under visible light. Experimental evaluations revealed that the optimized 0.05-Bi/U(Ce/Fe) sample achieved 99.5 % TC degradation efficiency, maintaining 88.8 % of its initial activity after four consecutive cycles. The superior photocatalytic activity arises from three synergistic mechanisms: Fe 3+ doping modulates the band structure to broaden visible-light absorption, while the synergistic effect of Ce 4+ /Ce 3+ and Fe 3+ /Fe 2+ redox pairs optimizes charge transport. The internal electric field at the BiOI/UiO-66(Ce/Fe) heterojunction enhances charge separation while maximizing the redox capacity of the photocatalyst. Radical capture experiments and LC-MS analysis confirmed ·O 2 − and ·OH as the dominant reactive radicals, with proposed possible degradation pathways. Thus, a new synergistic strategy for designing efficient photocatalysts is proposed in this work.
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APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Wei Deng,Hai Zhang,Yingzheng Yin,Congwen Liu,Qing Liu,Jiajun Fang,Yushi Xie,Xiaoling Xu,Zuowan Zhou
Low-voltage electroporation offers a sustainable and energy-efficient approach for water disinfection. However, this technique faces significant challenges, including inefficient charge transport and inadequate stability of nanoarray-modified electrodes, which undermine both disinfection performance and system stability. In this study, we overcame these challenges by introducing iron-doped zinc oxide nanoarrays (Fe-ZnO NAs) and integrating them into a novel Non-contact Electrode System (NES). The Fe-ZnO NAs exhibited an enhanced conductivity due to the iron doping, which greatly improved their electroporation disinfection performance. At a low voltage of 1 V and a short contact time of 0.6 s, 3 wt% iron-doped ZnO nanoarrays (Fe3-ZnO NAs) electrodes achieved remarkable bacterial removal efficiencies of 6.20-log for Escherichia coli ( E. coli ) and 1.69-log for Staphylococcus aureus ( S. aureus ), compared with only 1.94-log and less than 0.10-log, respectively, for the undoped ZnO NAs electrodes. Furthermore, the Fe3-ZnO NAs electrodes demonstrated excellent operational stability, maintaining over 6.00-log removal efficiency for E. coli during 30 min of continuous operation. These results establish the transformative potential of Fe-ZnO NAs as a high-performance, low-energy electrode material, offering a practical and efficient solution for water disinfection in real-world applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Fengli Yang,Yi Su,Guangpin Lin,Jiawang Liu,Feifei Xia,Guobin Liang,Wei Lin,Huabing Zhang
Photocatalytic nitrogen fixation presents a promising alternative to the traditional Haber-Bosch process. In this study, Fe/Br co-doped bismuth molybdate (Fe/Br-BMO) was synthesized for the photocatalytic production of ammonia, achieving a production rate of 156.7 µmol g −1 h −1 . Characterization of the catalyst reveals that Fe/Br co-doping not only modifies the energy band structure and electronic properties of the catalyst but also expands the light absorption spectrum, inhibits the rapid recombination of photogenerated charge carriers, and increases both the specific surface area and the number of oxygen vacancies within the catalyst, which promote N 2 adsorption and activation and a significant reduction in the free energy of the rate-limiting step. These improvements effectively facilitate the adsorption and activation of N 2 molecules, lower the Gibbs free energy associated with the rate-limiting step, and ultimately enhance the photocatalytic activity
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JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2019
·Vol. 91
·期 1
·54-62
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IF 1.986
Deng Senlin,Zhang Xubin,Lv Guojun,Zhai Yi,Yang Zebin,Zhu Yongqiang,Li Haichao,Wang Fumin
Fe-doped zeolites with Mobil Five (MFI) structure have been widely used as heterogeneous Fenton catalysts to eliminate dyes from wastewater. However, the influence of carriers on degradation efficiency has not been reported yet. In this work, we have prepared three Fe-doped zeolite catalysts, FeS-1, FeZSM-5, and FeTS-1, with silicalite-1 (S-1), zeolite socony mobil-5 (ZSM-5), and titanium silicalite-1 (TS-1) as carriers, respectively. Characterizations, such as X-ray diffraction (XRD), scanning electron microscopy, energy-disperse X-ray spectroscopy, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflection spectroscopy (UV–Vis DRS), X-ray fluorescence spectrometer, zeta potential, and N 2 adsorption/desorption isotherms, were used to investigate the morphologies and physicochemical properties of the synthesized materials. The catalytic performances of all zeolite catalysts were evaluated in the degradation experiments. The results depicted that the degradation efficiency of FeZSM-5 was higher than that of FeS-1 and FeTS-1 owing to its higher hydrophilic property, larger external specific surface area, and more negative zeta potential value. Therefore, the ZSM-5 could be a more suitable solid matrix for heterogeneous Fenton reactions than S-1 and TS-1.
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Chemistry-An Asian Journal
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2025
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IF 3.3
Boyu Jia,Li Ju,Fancang Meng,Huan Wu,Kexiang Li,Qingmin Ji
The chemical modification and self-assembly capability of fullerenes offer advantageous conditions for tailoring Fe/N-doped carbon-based catalysts. However, their strong π–π stacking tendency may partially restrict metal loading and the generation of active Fe species. Therefore, how to utilize the distinctive features of fullerenes to precisely regulate and optimize Fe–N active sites along with their local coordination environment remains challenging. In this work, water-soluble C 60 (wsC 60 ) was synthesized via a facile interfacial oxidation process. The presence of –OH on the C 60 cage may strengthen its binding affinity with Fe 3+ ion and effectively modulate the incorporation of Fe/N into the C 60 -derived carbon electrodes. By varying the wsC 60 /Fe 3+ mixing ratios followed by pyrolysis under NH 3 , we obtained Fe/N-doped carbons (FeN@wsC 60 -900) with distinct Fe/N-doping states, including FeN 4 , O–FeN 4 /Fe cluster, and FeN 4 /Fe cluster. The abundant –OH in wsC 60 also promoted the formation of a highly porous network, enhancing active site accessibility. The resultant FeN@wsC 60 -900 exhibited excellent oxygen reduction reaction (ORR) activity, outperforming both conventional C 60 -derived carbons and commercial Pt/C. Structural characterizations and density functional theory (DFT) simulations revealed that the O-coordinated Fe–N 4 with adjacent Fe cluster could optimize the coordinate geometry and adsorption energies of key ORR intermediates.
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Journal of the Taiwan Institute of Chemical Engineers
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2025
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IF 6.3
Jun-Feng Lu,Huan Wang,Yi Zhou,Xue-Ying Mao,Xiao-Qian Feng,Shuang Wang,Yong-Hua Zhao
Background Rhodamine B (RhB) poses a significant threat to aquatic ecosystems. While Fenton oxidation process is promising approach for RhB degradation, the conventional Fenton reaction has the narrow pH range and poor reusability. To overcome these, this study developed Fenton-like system with Fe-Cu/HZSM-5 catalyst for effective RhB degradation. Methods A series of Fe x Cu 5-x /HZSM-5 catalysts (x represents the molar ratio of Fe to Cu) were prepared by impregnation. These catalysts were integrated with H 2 O 2 to construct Fenton-like system for the degradation of RhB. The catalysts were characterized by XRD, NH 3 -TPD, XPS, FT-IR, and N 2 adsorption-desorption at low temperature techniques. Significant findings Among the tested catalysts, Fe 3 Cu 2 /HZSM-5 exhibited optimal performance, achieving near-complete RhB degradation (∼100%) under the condition of 45 °C, 5.3 mM/L H 2 O 2 , 3.0 g/L catalyst dosage, and broad pH range (2–5). Mechanistic studies confirmed that hydroxyl radicals (·OH) were the primary oxidants responsible for RhB degradation in Fenton-like system. Under ·OH attacking, RhB underwent a series of reactions such as N-deethylation and disruption of the conjugated structure and was eventually mineralized into CO 2 and H 2 O. Overall, a novel Fe-Cu/HZSM-5 catalyst was developed to address the limitations of the traditional Fenton reaction, providing valuable insights for future research in this field.
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Materials
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2025
·Vol. 18
·期 23
·5362
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IF 3.2
Xiang Zhang,Xiudong Yu,Zhaoyang Li,Haishun Liu,Xiang Xiong,Changjiu Chen,Weiming Yang
Phenol, an essential feedstock widely used in manufacturing and chemical industries, inevitably results in the discharge of phenol-laden wastewater. To enhance the phenol-degradation efficiency of Fe-based amorphous alloys, a novel atomic-scale fabrication approach for Fe-Cu galvanic couples is proposed, enabling the rapid and uniform formation of micro/nano Fe-Cu structures on the surface of Fe-based alloys with significant improvement in the catalytic activity towards phenol. Micron/nano Fe-Cu couples can be fabricated within 15 s at 45 °C. Phenol degradation experiments reveal that the pristine amorphous alloy exhibits a 40 min hatching period before the phenol removal process, and it exhibits a kinetic constant (kobs) of 0.1596 min−1after the hatching period, under conditions of 50 °C, 0.5 g/L catalytic loading, 10 mmol/L H2O2, and pH = 3 towards a 50 mg/L phenol solution. With the micro/nano Fe-Cu galvanic couples, thekobsvalue markedly increased to 2.23~2.36 min−1under identical conditions except for 3 mmol/L H2O2, corresponding to approximately a 14-fold improvement. This cost-effective and time-efficient atomic-scale fabrication strategy offers a promising platform for the development of next-generation catalytic alloys and functional materials.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Fenglong Sun,Zhuang Miao,Yue Li,Yang Zhao,Huan Wang
This study innovatively develops monoclinic-phase Fe-doped BiVO 4 nanorods (Fe-BiVO 4 ) via hydrothermal synthesis as a high-efficiency photoanode catalyst for H 2 O 2 photoelectrochemical cells. By optimizing Fe doping (5 wt%), the material achieves a remarkable red-shift in light absorption and reduced bandgap, significantly enhancing visible-light utilization and charge separation. The 5 % Fe-BiVO 4 -based photoelectrochemical cell demonstrates a peak power density of 2.16 mW·cm −2 under AM 1.5G illumination, along with the calculated solar-to-electricity conversion efficiency (SECE) of 2.10 %, which is approximately 2.7 times higher than that of pure BiVO 4 -based photoelectrochemical cell. Crucially, Fe doping modulates the band structure, raising the conduction band to +0.13 V vs. RHE, which suppresses H 2 evolution and directs photogenerated electrons toward efficient H 2 O 2 reduction at the cathode side. The cell exhibits exceptional energy storage capability, delivering a specific capacitance of 31,622 mF·cm −2 (3.26 times enhancement in comparison to BiVO 4 ) after 3 h illumination and remaining 61.3 % specific capacitance after continuous 12 h operation. Combined with robust cyclability and cost-effective fabrication, this work provides a scalable strategy for solar-to-chemical-to-electrical energy conversion.
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ACS Applied Materials & Interfaces
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2022
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IF 10.383
Jianlun Hu,Kangkang Feng,Yiyang Cong,Xiaoyang Li,Yanjun Jiang,Xiaodan Jiao,Yurong Li,Yuqin Zhang,Xinying Dong,Weifei Lu,Zhi Ding,Hao Hong
Shikonin (Shik), a natural pigment, has received growing interest in various biomedical fields due to its anti-inflammatory, antitumor, antimicrobial, and antioxidant ability. However, some inherent characteristics of Shik, such as its virulence, low bioavailability, and poor solubility, have limited its biomedical applicability. Here, we reported a facile synthetic method to produce the Shik-iron (III) nanoparticles (Shik-Fe NPs), which could overcome these limitations of Shik. The synthesized Shik-Fe NPs possessed a uniform size range of 110 ± 10 nm, negative surface charges, good water dispersity, and high safety. Iron distributed uniformly inside Shik-Fe NPs, and iron constituted 20% of total mass in PEGylated Shik-Fe NPs. When interacting with activated macrophages, Shik-Fe NPs significantly reduced the level of cellular inflammatory factors, for example, iNOS, IL-1β, and TNF-α. Furthermore, the Shik-Fe NPs demonstrated synergistic anti-inflammation and anti-bacterial properties in vivo, since they could release Fe3+ and Shik to eradicate bacteria (Staphylococcus aureus and P. aeruginosa were used as model microbes here) during wound infections and provide full recovery for scald wounds. Collectively, the study established a dual-functional Shik-derived nanoplatform, which could be useful for the treatment of various inflammation-involved diseases.
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Nanoscale Research Letters
·
2018
·Vol. 13
·期 1
·1-10
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IF 3.125
Zhang Shiyu,Zhang Chao,Liu Mingyue,Huang Renliang,Su Rongxin,Qi Wei,He Zhimin
Nanoscale zero-valent iron (nZVI) has shown considerable promise in the treatment of chlorinated organic compounds, but rapid aggregation and inactivation hinder its application. In this study, palladium-doped zero-valent iron nanoparticles involving poly (γ-glutamic acid) (Fe-Pd@PGA NPs) were synthesized. The nanoparticles were small (~100 nm), uniformly distributed, and highly stable. The dechlorination performance of Fe-Pd@PGA NPs was evaluated using p -CP as a model. The results demonstrated that Fe-Pd@PGA NPs show high activity even in weakly alkaline conditions. The maximum rate constant reached 0.331 min − 1 at pH 9.0 with a Fe to p -CP ratio of 100. Additionally, the dechlorination activity of Fe-Pd@PGA NPs is more than ten times higher than that of the bare Fe-Pd NPs, demonstrating the crucial role of PGA in this system. Furthermore, we investigated the dechlorination performance in the presence of different anions. The results indicated that Fe-Pd@PGA NPs can maintain high activity in the presence of Cl − , H 2 PO 4 − , and humic acid, while HPO 4 2− and HCO 3 − ions slightly reduce the dechlorination activity. We believed that PGA is a promising stabilizer and promoter for Fe-Pd NPs and the Fe-Pd@PGA NPs have the potential for practical applications.
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Journal of Energy Chemistry
·
2024
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IF 14
Shiyu Li,Jin Yan,Meihuan Liu,Hui Su
The electrochemical conversion of nitrate, a widespread water pollutant, into valuable ammonia represents a green and decentralized approach to ammonia synthesis. However, the sluggish multielectron-proton coupling path and the low reactive species (nitrate and proton) concentration at the catalyst interface inhibit the efficiency of ammonia production from nitrate reduction reaction (NitRR). Herein, we introduce a novel iron-based tandem catalyst encapsulated by reduced graphene oxide (denoted as Fe-rGO), with a superior ammonia production rate of 47.815 mg h −1 mg −1 cat and a high Faraday efficiency (FE) of 96.51% at an applied potential of −0.5 V. It also delivers a robust stability with FE above 90% under a current density of 250 mA cm −2 for 50 h. In situ X-ray absorption spectroscopy reveals that the FeO x is dynamically translated to Fe 0 site concurrently with the enhancement of the NH 3 production rate, suggesting the Fe 0 site as hydrogenation active center. The asymmetric distribution of surface charges of rGO not only enriches nitrate ions at the catalytic interface and promotes the hydrogenation process in NitRR, but also protects the iron species and ensures their stability during electrolysis. The Zn-NO 3 − battery demonstrates an impressive FE of 88.6%, highlighting its exceptional potential for practical applications.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
·
IF 12.2
Jiami Ma,Zhixin Hu,Weihong Guo,Cheng Ni,Pan Li,Bosheng Chen,Songhua Chen,Jinlong Wang,Yanbing Guo
Ground−level ozone (O 3 ) pollution poses a significant threat to both ecosystem sustainability and human health. The catalytic decomposition of O 3 presents as a promising technology to address the issues of O 3 pollution. This study undertook the synthesis of various functionalized metal−organic framework (MOF) catalysts ( i.e., X-MIL-53(Fe) (X = H, NH 2 , NO 3 )) to delve into the influence of ligand functional groups on skeletal structure and catalytic efficacy, particularly focusing on unraveling the mechanism of O 3 catalytic decomposition under humid conditions. NH 2 -MIL-53(Fe) catalyst achieved complete O 3 decomposition under ambient temperature and high humidity conditions (RH=75 %), exhibiting a reaction rates (mol·m −2 ·s −1 ) 129 and 10.5 times greater than that of MIL-53(Fe) and NO 2 -MIL-53(Fe). The NH 2 group promotes electron flow within the backbone towards the hydroxyl group (OH) linked to Fe atom. In humid O 3 , H 2 O molecules augment the interaction between O 3 and NH 2 -MIL-53(Fe), and OH is converted to·O 2 − after deprotonation, promoting O 3 decomposition. Additionally, leveraging three−dimensional (3D) printing technology, a monolithic catalyst for O 3 decomposition was prepared for application. This study not only advances understanding of the mechanisms underlying O 3 decomposition but also offers practical solutions for addressing O 3 pollution at humid conditions.
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