JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Hu Zhou,Miao Li,Liqin Chen,Huipeng Cheng,Dan Li,Changxin Tang,Jiren Yuan,Feigao Xu
In this work, Fe 3 O 4 /B 4 C (FeB) composites were successfully prepared by a facile co-precipitation process. FeB composites were characterized using XRD , FTIR, N 2 adsorption-desorption, XPS, etc techniques and then used as heterogeneous Fenton catalysts to activate green oxidant (H 2 O 2 ) for the degradation of TCH. The removal efficiency of TCH by FeB composites was explored including different parameters of Fe 3 O 4 loading on B 4 C, catalyst dosage, initial solution pH, H 2 O 2 dosage, and reaction temperature. The highest photo-Fenton catalytic efficiency was obtained for the composites with a mass ratio of Fe 3 O 4 to B 4 C of 1:0.75. At this time, the removal efficiency of Fe 3 O 4 /B 4 C was 2 times and 391 times that of the parent Fe 3 O 4 and B 4 C, respectively, and B 4 C can effectively improve the efficiency of the Fenton cycle. h + , e - , and ·OH were mainly responsible for the degradation of TCH by Fe 1 B 0.75 composites. After repeated use for five times, the removal efficiency of the catalyst was reduced by only 8.0%. The disparity in work functions by density functional theory calculations confirmed the formation of an internal electric field at the Fe 3 O 4 /B 4 C composites interface, which contributed the transfer of charge carriers between the Fe 3 O 4 and B 4 C. Moreover, the FeB composite showed a high stability, indicating that FeB composites may be a promising heterogeneous catalyst .
研究领域:
环境科学
·
催化化学
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Dan Li,Jiahui Yang,Shuang Lv,Xiaopeng Li,Li Shao,Caiyun Zhou,Feigao Xu
Unique Fe3S4/Cu2O composites were constructed with high Fenton-like photocatalytic activity through the impregnation coprecipitation method. The structure, morphology, optical, magnetic, and photocatalytic properties of the as-prepared composites were explored in detail. The findings suggest that small Cu2O particles were grown on the surface of Fe3S4. The removal efficiency of TCH by Fe3S4/Cu2O was 65.7, 4.75, and 3.67 times higher than that of pure Fe3S4, Cu2O, and the Fe3S4 + Cu2O mixture, respectively, when the mass ratio of Fe3S4 and Cu2O was 1:1 at pH 7.2. The synergistic effect between Cu2O and Fe3S4 was the main factor for TCH degradation. The Cu+ species from Cu2O increased the Fe3+/Fe2+ cycle during the Fenton reaction. •O2– and h+ were the main active radicals; however, •OH and e– played the second role in the photocatalytic degradation reaction. Moreover, the Fe3S4/Cu2O composite retained good recyclability and versatility, and could be conveniently separated by a magnet.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2023
·
IF 5.3
Song Jie,Chen Lijun,Wei Zhiqiang,Niu Yuhua,Zhu Xiaoli
Photocatalytic degradation combined with adsorption removal of contaminants is one of the most effective methods of removing TCH P-(CM-β-CD/HPCS/KHA)@AC/TiO 2 composite material was prepared by etheration modification of β-Cyclodextrin (β-CD) and combination of activated carbon (AC) and TiO 2, the adsorption/photocatalytic degradation behavior of tetracycline hydrochloride (TCH) was studied, the P-(CM-β-CD/HPCS/KHA)@AC/TiO 2 composites were successfully prepared by FTIR, SEM, XRD and XPS Characterisation tests. At 298 K and pH 4, the removal rate of TCH can reach 98% in 2 h. The adsorption of the composites follows the quasi-second-order kinetic model, which is highly consistent with the Langmuir model, an endothermic and spontaneous adsorption process is formed through intermolecular forces and coordination. Photocatalytic degradation follows the quasi-first order model, the photocatalytic performance was verified in conjunction with TOC testing, and the process was known to be a detoxification process through toxicity testing. Finally, after 10 cycles of treatment, the composite material removed up to 70% of TCH.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Shuyan Qi,Yang Wang,Shanqiang Wu,Haiyang Li,Xu hu
To address the limited photocatalytic efficiency of single semiconductors in antibiotic degradation, this study successfully synthesized Bi 2 WO 6 /Ni 0 . 08 Mo 0 . 92 S 2 Z-Scheme heterojunction photocatalysts via a hydrothermal approach. Comprehensive characterizations including XRD, SEM, HRTEM, and BET confirmed the effective construction of the heterojunction. The optimal composite with 8% Bi 2 WO 6 loading exhibited a 38% increase in specific surface area and maintained coherent interfacial contact between components. Under simulated sunlight irradiation, this composite achieved 89.98% degradation of 60 mg/L tetracycline hydrochloride within 150 minutes, which was 8.65 and 1.58 times higher than that of pure Bi 2 WO 6 and Ni 0 . 08 Mo 0 . 92 S 2 , respectively. Mechanistic investigations revealed that the enhanced performance originated from narrowed bandgap, suppressed electron-hole pair recombination, optimized interfacial electron transfer, and degradation processes dominated by superoxide radicals and photo-induced holes—findings validated by scavenger experiments and ESR analysis. Additionally, the composite demonstrated good cyclic stability, retaining 78.6% of its initial efficiency after three consecutive cycles, along with broad-spectrum activity towards various antibiotics. This work provides a promising strategy for the rational design of high-performance heterojunction photocatalysts for efficient water purification.
研究领域:
环境科学
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材料化学
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光催化
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水净化
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半导体异质结
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DOI
高影响因子
WATER ENVIRONMENT RESEARCH
·
2025
·Vol. 97
·期 5
·e70070
·
IF 1.9
Fanye Wang,Jinnan Liu,Jingrui Liu,Xinchao Ruan,Xiaojun Yang
The widespread use of tetracycline has made the efficient and environmentally friendly treatment of tetracycline-contaminated wastewater a pressing issue in environmental management. This study synthesized high-purity and uniformly mixed Cu 0 /CuFeO 2 composite materials using a one-step hydrothermal method, aiming to enhance the catalytic activation of peroxymonosulfate (PMS) through the synergistic effect of zero-valent metal and bimetallic compounds. The Cu 0 /CuFeO 2 composite demonstrated exceptional PMS activation performance, achieving 84% tetracycline hydrochloride (TCH) degradation within 1 min and 91% degradation within 20 min. The degradation process involved the synergistic action of •OH, SO 4 •− , 1 O 2 , and electron transfer. The degradation intermediates of TCH were identified using high-performance liquid chromatography–mass spectrometry (HPLC-MS), and four potential degradation pathways were proposed. Furthermore, Cu 0 /CuFeO 2 exhibited robust degradation performance across a wide pH range and maintained high efficiency in complex aqueous environments. Even after five cycles, the composite retained 78% of its degradation efficiency, demonstrating excellent stability and reproducibility in the degradation of TCH using the Cu 0 /CuFeO 2 /PMS system. Practitioner Points A high-purity and uniformly mixed Cu 0 /CuFeO 2 composite was synthesized. Robust catalytic activity and stability was observed for the synthesized catalyst. Synergistic contributions from •OH, SO 4 •− , 1 O 2 , and e − resulted in TCH degradation. Four potential TCH degradation pathways were derived. Graphical A Cu 0 /CuFeO₂ composite was synthesized, characterized, and optimized to activate peroxymonosulfate (PMS) for degrading tetracycline hydrochloride (TCH) and related antibiotics. In this system, Cu 0 acted as an electron donor, facilitating electron transfer through the redox cycling of metal ions. This process sustained the continuous generation of reactive oxygen species—including •OH, SO₄•⁻, and ¹O₂—as well as electrons, thereby promoting the efficient degradation of TCH. Furthermore, four potential degradation pathways were proposed based on the identified degradation intermediates.
研究领域:
环境科学
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化学工程
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DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Zhineng Dai,Wenqi Zhang,Jiazhong Li,Yicheng Wu,Haiyan Fu
The prediction of Tetracycline hydrochloride (TCH) degradation using artificial intelligence (AI) has garnered increasing interest due to its potential to significantly reduce experimental costs. Despite this interest, the methods and techniques in this area remain underdeveloped and require further research. As AI technology advances, an expanding array of techniques becomes available for application in degradation prediction. In this study, polyaniline (PANI) was selected as a three-dimensional particle electrode for the degradation of TCH. We utilized five input variables: initial concentration, voltage, electrolyte concentration, particle concentration, and time, with the absorbance after degradation serving as the output. By integrating extreme gradient boosting (XGB) and a multilayer perceptron (MLP), we successfully developed the XGB_MLP model. This model achieved a predictive accuracy (R 2 ) of 98.52 % and a root mean square error (RMSE) of 0.052. Furthermore, a degradation rate of 83.48 % was observed for 10 ppm of TCH after 120 min. The findings of this study underscore the capability of the XGB_MLP model to accurately predict the degradation rate of TCH through electrochemical degradation.
研究领域:
环境科学
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人工智能
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化学工程
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DOI
高影响因子
FIBERS AND POLYMERS
·
2018
·Vol. 19
·期 3
·477-488
·
IF 1.353
Peng Qingyan,Xu Pengjun,Xiao Shili
Fabrication of porous polymer membrane with controlled drug release and efficient antibacterial performances is of great interest in biomedical fields. In this study, Laponite (LAP) nanodisks were first used to encapsulate a model antibiotic drug, tetracycline hydrochloride (TCH). Then, drug-loaded LAP nanodisks with an optimized loading efficiency (85.3 %) were mixed with poly(L-lactic acid) (PLLA) polymer to form drug-loaded composite porous membrane via solvent coasting. The structure, morphology and swelling property of the porous membranes formed with varied solvent ratio of methylene dichloride (DCM) and dimethyl formamide (DMF) in the mixture solvent were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy and swelling test. In vitro drug release behavior, the cytotoxicity and the antibacterial activity of drug-loaded composite membranes were evaluated. Results showed that the TCH release was dependent on the physical structure of PLLA membrane and the presence of LAP nanodisks effectively weakened the initial burst release of TCH, and improved the sustained release property of porous PLLA membrane. The released TCH of TCH/LAP/PLLA 3:1 and TCH/LAP/PLLA 4:1 was 10.0 % and 5.3 % within initial 1 h, respectively. More importantly, the porous TCH/LAP/PLLA membrane was cytocompatible and displayed considerable antibacterial activity, solely associated with the loaded TCH drug, confirming its potential utility in wound dressings and tissue engineering.
研究领域:
生物医学
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材料科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Tong Ding,Wenxiao Zhao,Yuqing Sun,Shilong Li,Tianxiang Yu,Wenheng Jing
In this work, a novel 2D Fe 3 O 4 -MnO 2 hollow fiber ceramic membrane (HFCM) with both excellent separation performance and high catalytic activity was constructed. The Fe 3 O 4 nanoparticles were deposited on 2D MnO 2 nanoplates to increase the Mn 3+ content, and then the nanoplates were pressure-driven and sintered on the surface of the hollow fiber ceramic supports to obtain 2D Fe 3 O 4 -MnO 2 -HFCMs. Electron spin resonance analysis confirmed that hydroxyl radicals and superoxide radicals played a major role in oxidative degradation and tetracycline hydrochloride (TCH) removal was 86.9 %. Noteworthily, TCH was concentrated on the membrane interface due to the concentration polarization effect, which increases the probability of binding free radicals from the catalytic membrane layer, thus enhancing the catalytic performance and the anti-fouling capability of the membrane. The 2D Fe 3 O 4 -MnO 2 -HFCM can be applied in wastewater treatment due to its superior catalytic ozonation activity and high separation performance.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 11
·3292-3303
·
IF 5
Weina Song,Yamin Liu,Yongli Dong,Xue Han,Mei Mu,Yan Chen,Wenyan Wang,Pei Wang,Wei Li
A heterophase junction TiO2 catalyst with brookite and anatase (MT-200-BA) was prepared via a facile one-step solvothermal method, based on the initial construction of the MIL-125(Ti) metal organic framework (MOF) precursor and subsequent structure transformation from the MOF precursor to brookite@anatase heterojunction TiO2. The fabricated catalysts have been fully characterized by X-ray diffraction (XRD), N2 adsorption–desorption, thermogravimetry (TG), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and various spectral and electrochemical tests. It was found that the unique nanostructure with a high specific surface area and large pore diameter, particularly brookite@anatase heterophase junctions and a narrow band gap make the MT-200-BA catalyst exhibit a significantly enhanced solar-driven H2 generation rate under air mass 1.5 global (AM 1.5 G), which is significantly higher than those of MIL-125(Ti), MT-180-MA and commercial P25. In addition, the MT-200-BA catalyst has also shown excellent photocatalytic performance for the degradation of tetracycline hydrochloride (TCH). The synthesis strategy adopted in this paper paves a new way for the construction of novel photocatalysts with heterojunctions via phase transformation from MOFs.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
·
IF 4.1
Xuyang Hu,Lihui Huang,Ting Sun,Zhenhui Gao,Zhengjun Qu
In this study, the synthesis of titanium dioxide nanotubes/graphene aerogel (TNGA) as a particle electrode and the application in the three-dimensional (3D) electrode for the treatment of low electrolyte concentration wastewater containing tetracycline hydrochloride (TCH) was studied. The effect of reaction parameters (electrode, electrolyte concentration, cell voltage, initial pH, ratio of TNGA mass to solution volume) on the degradation of TCH in an electrochemical system was investigated. At the optimum conditions (cell voltage 18 V, initial pH 6 and TNGA mass to solution volume ratio 2 mg/mL) predicted by the response surface methodology (RSM), a high TCH degradation rate (90.6 %) was obtained after 3 h. TNGA showed relatively high stability in the electrochemical oxidation of organic pollutants (82.3 %) even after fifty continuous cycling experiments. The quenching experiments and electron paramagnetic resonance (EPR) indicated that TNGA can generate singlet oxygen in the 3D electrode system. Two possible degradation pathways for TCH were given based on possible intermediates. This study first showed that TNGA is an excellent electrocatalytic material as a particle electrode in antibiotic elimination.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·798
·
IF 4
Zhiyong Fang,Lizhe Ma,Jieli Duan,Kefu Zhu,Xiangshu Zhang,Zhou Yang
The internal flow field and hydrodynamic properties of a photocatalytic reactor are crucial for the enhancement of degradation performance. In this study, TiO2films were loaded on the surface of quartz glass tubes and activated with UV-LEDs. Combining the degradation experiments with computational fluid dynamics (CFD) numerical simulations, the regulation laws of film surface area, flow field configuration, ratio of film surface area to solution volume (S/V), inlet flow rate and diameter on the reaction process were systematically evaluated. The results showed that the film surface area was positively correlated with the degradation efficiency of tetracycline hydrochloride (TCH). The degradation rate of TCH ranged between 32.15% and 64.83% in 12 equal film area flow field configurations. It was further found that the S/V value was positively correlated with the degradation efficiency only for the same flow field configuration, and the degradation rate of TCH was enhanced by 32.73% when the S/V value was increased from 0.018 m−1to 0.034 m−1. In addition, as the flow rate increases, the optimal inlet diameter increases accordingly (10, 25, 40, 55, and 70 mL/min corresponded to 10, 15, 20, 20, and 25 mm, respectively). The optimum structural parameters of the reactor were determined as follows: inlet flow rate of 10 mL/min, inlet diameter of 10 mm, flow field configuration type b, S/V value of 0.034 m−1, and height of 450 mm. The degradation rate of TCH under these conditions was 96.34%. The relationship between the film-reactor flow field and degradation efficiency of the photocatalytic reactor established in this study provides a reference for optimizing the design of tubular catalytic reactors.
研究领域:
环境工程
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化学反应工程
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计算流体力学(CFD)
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光催化
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反应器设计与优化
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Yating Ai,Sónia A.C. Carabineiro,Xianqiang Xiong,Huayue Zhu,Qi Wang,Bo Weng,Min-Quan Yang
Emerging contaminants in water sources present serious environmental and health risks, creating an urgent need for efficient and reliable treatment strategies. Photocatalytic advanced oxidation processes (AOPs) provide rapid reaction rates and strong oxidation capabilities, however, comprehensive evaluations of wastewater treatment, including degradation pathways, toxicity assessments and mechanistic insights, remain underexplored in the literature. This study presents novel S-scheme Mn 0.5 Cd 0.5 S/In 2 S 3 (MCS/IS) photocatalysts for efficient degradation of antibiotic pollutants, with a particular focus on tetracycline hydrochloride (TCH). The optimized MCS/IS photocatalyst demonstrates exceptional degradation efficiency and robust resistance to inorganic anions. Additionally, a continuous-flow wastewater treatment system, using an MCS/IS membrane, demonstrates outstanding stability in TCH photodegradation. Utilizing response surface methodology and Fukui function analysis, the effects of various parameters on photocatalytic degradation rates, along with the associated pathways and intermediate products, have been thoroughly investigated. Toxicity assessments confirm the environmental safety of the treated effluents. Mechanistic studies show that the S-scheme heterojunction in the MCS/IS photocatalyst improves electron-hole separation, thereby enhancing photocatalytic performance. It is expected that this study will serve as a model for advancing the removal of emerging contaminants, further enhancing photocatalytic AOPs as sustainable water purification technologies.
研究领域:
环境科学
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水处理技术
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光催化
·
材料科学
·
毒理学
·
化学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）