JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
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2025
·
IF 3
Yusheng Jiang,Xingyu Liu,Teng Li,Hankun Zhang,Lingtao Zeng,Yundi Geng,Hongwei Wu,Changjiang Liu,Hongchao Li,Ding Wang,Yan Li,Chuncheng Yang
Fe-based amorphous alloys have garnered significant attention as high-efficiency Fenton-like catalysts for wastewater treatment due to their unique disordered atomic structure and abundant active sites. However, challenges remain in achieving both ultra-fast degradation kinetics and facile catalyst recovery. In this study, magnetically recoverable Fe-Si-B amorphous nanoparticle catalysts were successfully prepared by the chemical reduction method, and Rhodamine B degradation experiments were carried out under a Fenton-like system. The structural, morphological, compositional, thermal, and magnetic properties of the Fe-Si-B nanoparticles were characterized before and after the catalytic reaction. The results demonstrated that the nanoparticles retained their amorphous structure after the catalytic reaction and exhibited excellent soft magnetic properties with a saturation magnetization of 94.41 emu/g. Under conditions of 5 mM H 2 O 2 , 70 °C temperature, and pH = 3, the catalyst achieved over 99 % degradation efficiency for 20 mg/L Rhodamine B within 2 min at a dosage of only 10 mg/L. The degradation process followed a pseudo-first-order kinetic model with an activation energy as low as 37.62 kJ/mol. Radical quenching experiments indicated that ·OH played a dominant role in the degradation reaction, and the synergistic effect between the amorphous structure and high-density active sites significantly enhanced the generation efficiency of ·OH, thereby improving catalytic performance.
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Journal of Inorganic and Organometallic Polymers and Materials
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2025
·
IF 4.9
Hou Chengmin,Ren Chuangchuang,Bai Yuan
Industrial pigment wastewater poses a serious threat to ecosystems and human health. This study aimed to develop efficient and recyclable adsorbents for the treatment of such wastewater. Initially, a magnetic carrier, W@Fe 3 O 4 , was synthesized by loading Fe 3 O 4 onto wood fibers (W) via co-precipitation. Subsequently, three types of acrylic-modified magnetic wood fiber adsorbents (W@Fe 3 O 4 -g-pGMA, W@Fe 3 O 4 -g-pAA, W@Fe 3 O 4 - g -pHEMA) were fabricated by grafting poly(glycidyl methacrylate) (pGMA), poly(acrylic acid) (pAA), and poly(2-hydroxyethyl methacrylate) (pHEMA), respectively, onto the W@Fe 3 O 4 surface through surface-initiated polymerization. The successful preparation of the materials was confirmed by FTIR, TG, and SEM. Adsorption experiments demonstrated a significant enhancement in the adsorption performance of all three modified materials for Methylene Blue (MB) and Rhodamine B (Rh B). The optimal adsorption conditions were identified as follows: adsorbent dosage of 10 mg, initial MB concentration of 20 mg/L, initial Rh B concentration of 30 mg/L, pH 7, and temperature of 35 °C. Under these optimal conditions, the removal efficiency of MB by W@Fe 3 O 4 - g -pGMA reached 83.47%, with an adsorption capacity of 16.15 mg g −1 , while the removal efficiency of Rh B by W@Fe 3 O 4 - g -pAA reached 90.08%, with an adsorption capacity of 17.95 mg g −1 . The adsorption kinetics were best described by the pseudo-second-order model. Isotherm analysis indicated that the adsorption of MB onto W@Fe 3 O 4 - g -pGMA was better fitted by the Langmuir model, whereas the adsorption of Rh B onto W@Fe 3 O 4 - g -pAA was more consistent with the Temkin model, suggesting a predominantly chemisorption mechanism. After five consecutive adsorption-desorption cycles, the removal rates for MB by W@Fe 3 O 4 - g -pGMA and for Rh B by W@Fe 3 O 4 - g -pAA remained above 70%, indicating excellent recyclability and stability of the materials. This study provides valuable insights for the design of functional adsorbents and their potential application in the advanced treatment of pigment-containing wastewater.
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NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Ziyuan Li,Jinran Zhang,Weiwei Zhao,Hongbo Jiang,Meijuan Tian,Jingman Pang,Weixing Zhao
In this study, TiO2 and anhydrous Na2CO3 were used as precursor materials to investigate the optimal conditions for synthesizing sodium titanate (Na2Ti3O7) by the molten salt method. The sodium titanate reactant was acid-exchanged to prepare titanic acid (H2Ti3O7), which was then calcined at different temperatures for varying durations. The resulting product was characterized by XRD, SEM, TEM, FE-SEM, and FTIR, confirming the formation of an H2Ti3O7/TiO2 composite. The photocatalytic degradation performance, mechanism, and stability of the H2Ti3O7/TiO2 composite were evaluated using rhodamine B as a model pollutant. The results indicated that the composite calcined at 800 °C for 3 h exhibited the fastest degradation rate. After the addition of peroxymonosulfate, the degradation efficiency reached approximately 100% within 30 min, which was higher than those of pure H2Ti3O7 and TiO2. The composite retained 94.56% of its original efficiency after four cycles, indicating excellent catalytic degradation ability. Quenching experiments revealed that the main active species were SO4˙−, ˙O2−, and ˙OH, and a possible degradation mechanism was proposed.
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Separations
·
2025
·Vol. 12
·期 10
·276
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IF 2.7
Xiaohan Zhu,Liang Song,Jia Miao
The development of efficient and sustainable advanced oxidation processes (AOPs) for organic pollutant removal is of great significance for water purification. In this study, a CoFeNi-layered double hydroxide (CoFeNi-LDH) catalyst was synthesized and applied for the simultaneous activation of peroxymonosulfate (PMS) and ozone to degrade rhodamine B (RhB) in aqueous solution. The CoFeNi-LDH/PMS/ozone system achieved a remarkable RhB removal efficiency of 95.2 ± 1.2% within 8 min under neutral pH conditions. Systematic parametric studies revealed that synergistic interactions among CoFeNi-LDH, PMS, and ozone contributed to the generation of reactive oxygen species (ROS), primarily sulfate radicals (SO4•−) and singlet oxygen (1O2), as confirmed by EPR and quenching experiments. Density functional theory (DFT) calculations demonstrated that ozone enhanced PMS adsorption and activation at CoFeNi catalytic sites. The catalyst exhibited robust magnetic recyclability and structural stability after repeated use. This work highlights a synergistic catalytic strategy for PMS/ozone activation, offering an effective and environmentally friendly platform for dye wastewater remediation.
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MICROCHEMICAL JOURNAL
·
2023
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IF 4.8
Huizi Zheng,Haoming Sun,Zhipeng Zhang,Yudan Qian,Xiaolin Zhu,Jiao Qu
Microplastics have worldwide accumulated in water and coexisted with different toxic chemicals, which ultimately threaten human health. However, the combined cytotoxicity of microplastics and typical pollutants is still limited. Therefore, it is essential to evaluate the individual toxicity of microplastics and the combined toxicity with other contaminants rapidly and accurately. In this study, a sensitive electrochemical cell-based sensor based on a carbon nanohorn/rhodamine B modified electrode was proposed. Normal human liver (L-02) cells were used as the ideal model for toxicity evaluation. The sensor was used to detect the cytotoxicity of polystyrene microplastic (PS), bisphenol A (BPA), pentachlorophenol (PCP), and lead (Pb 2+ ). The half inhibition concentration (IC 50 ) values of PS, BPA, PCP, and Pb 2+ to L-02 cells were 286.34 μg/mL, 78.85 μM, 67.87 μM, and 60.12 μM, respectively. The combined toxicity of PS and typical pollutants (BPA, PCP, Pb 2+ ) revealed an additive effect. Moreover, the mechanism underlying the cytotoxicity of microplastics and three pollutants was investigated from the perspective of oxidative stress and cellular apoptosis. The toxic effects inhibited cell division and growth, with apparent oxidative stress damage and increased apoptosis. This study provideds a sensitive tool for toxicity detection of microplastics and typical pollutants, and reveals the possible mechanisms involved.
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APPLIED ORGANOMETALLIC CHEMISTRY
·
2023
·Vol. 37
·期 9
·e7211
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IF 3.9
Qian Xu,Xinyuan Guo,Chuantao Hou,Zonghua Wang
Synthesis of Ln-porphyrin aerogels with abundant porosity and novel photophysical properties for luminescent sensing and photocatalysis should have significant importance. In this paper, a multifunctional Tb-porphyrin aerogel was synthesized using agarose as a building block for ratiometric fluorescent Cu(II) sensing and photocatalytic degradation of rhodamine B. Specially, Tb-porphyrin particles were introduced into agarose aerogel to give the Tb-porphyrin aerogel with porous structure. Tb-porphyrin aerogel shows an excellent sensing performance toward Cu(II) resulting from the self-referencing mechanism and the porous structure. The fluorescent response exhibits a linear range from 1 to 200 μM ( R 2 = 0.990), and the limit of detection is 50 nM (S/N = 3). Such a ratiometric fluorescent sensor shows excellent long-term stability and selectivity. Furthermore, the Tb-porphyrin aerogel was used for photocatalytic degradation of rhodamine B, exhibiting a more efficient activity compared with the Tb-porphyrin particle. This research should open up a new avenue to develop Ln-porphyrin aerogel-based material for ratiometric fluorescent sensing and photocatalysis.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 27
·21396-21408
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IF 2.779
Wang Jiaxuan,Wu Daoxin,Wu Jialun,Duan Mengtian,Tong Haixia
A novel Bi 2 O 3 /Cs 3 PW 12 O 40 (Bi 2 O 3 /CsPW) composite was prepared by depositing Bi 2 O 3 on the surface of spherical Cs 3 PW 12 O 40 . The synthesized photocatalyst was characterized using XRD, XPS, FT-IR, BET, SEM, TEM, and UV–Vis. The results revealed that the composite was a typical Keggin-type photocatalyst. Compared with pure Bi 2 O 3 and CsPW, the composite exhibited high photocatalytic degradation activity for rhodamine B (RhB). The 10% Bi 2 O 3 /CsPW nanocomposite could decompose 92.7% of RhB under visible-light irradiation for 240 min. The improved photocatalytic degradation efficiency is mainly due to the enhanced absorption of visible-light and effective separation of photo-induced carriers caused by heterojunction formation. The active species capture tests confirmed that RhB photodegradation using Bi 2 O 3 /CsPW composite was mainly controlled by h + and·O 2− oxidation reactions. Furthermore, Bi 2 O 3 /CsPW composite displayed good stability under cyclic experiments.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Min Zhang,Yiguo Jiang,Xiuquan Xu,Xiaofeng Yu,Wenyan Shen,Miaomiao Luo,Luyao Ding,Haiwen Chen
The reinforced light-harvesting capability, suppressed photocarrier recombination and increased specific surface area represented a possibility of excellent photocatalytic performance for graphitic carbon nitride (g-C 3 N 4 )-based photocatalysts . Herein, the porous 1,3,5-Trihydroxybenzene substituted g-C 3 N 4 (denoted as PTBCN) composites with superior visible-light-driven photocatalytic properties were rationally constructed via a two-step reaction combination of freeze-drying and thermal-polymerization. The optimal PTBCN-2 achieved the maximum photocatalytic Rhodamine B (Rh B) degradation and H 2 O 2 evolution rate constants, nearly 6.56 and 3.17 times higher than that of bare g-C 3 N 4 . The outstanding performances of PTBCN-2 were probably attributed to the extended specific surface area, robust visible light response, adjusted electronic band structure , accelerated separation and transfer of photocarriers as well as good hydrophilicity. As a result, the above integrated merits were directly responsible for the huge superoxide anion ( • O 2 − ) generation, which dominated the efficient photocatalytic reactions. This work provided a new idea to design and construct high efficiency porous aromatic ring substituted g-C 3 N 4 -related photocatalysts for organic pollutants degradation and H 2 O 2 production.
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Bioengineering-Basel
·
2022
·Vol. 9
·期 7
·307
·
IF 5.046
Zhixian Huang,Fan Zhang,Yanbo Tang,Yongdi Wen,Zhenqiang Wu,Zhen Fang,Xiaofei Tian
Hypocrellins (HYPs) are natural perylene quinone derivatives from Ascomycota fungi. Based on the excellent photosensitization properties of HYPs, this work proposed a photocatalytic advanced oxidation process (PAOP) that uses HYPs to degrade rhodamine B (RhB) as a model organic pollutant. A synergistic activity of HYPs and H2O2(0.18 mM of HYPs, 0.33%w/vof H2O2) was suggested, resulting in a yield of 82.4% for RhB degradation after 60 min under visible light irradiation at 470–475 nm. The principle of pseudo-first-order kinetics was used to describe the decomposition reaction with a calculated constant (k) of 0.02899 min−1(R2= 0.983). Light-induced self-degradation of HYPs could be activated under alkaline (pH > 7) conditions, promising HYPs as an advanced property to alleviate the current dilemma of secondary pollution by synthetic photocatalysts in the remediation of emerging organic pollutants.Keywords:photocatalytic advanced oxidation;organic pollutants;photosensitizer;ring-opening reaction;self-degradation
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PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Zhongli Liu,Haizeng Wang,Jizhou Duan,Baorong Hou
Bi 2 WO 6 /AgIO 3 (BWO/AIO) nanosheet composites were constructed by a two-step hydrothermal method . The structure, morphology and photoelectrochemical properties of the composites were characterized by X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectra (UV-DRS), transmission electron microscopy (TEM), impedance, X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The constructed photocatalyst composites exhibited the best photocatalytic performance at a molar ratio of BWO/AIO-0.8. In addition, there was complete degradation of RhB by the BWO/AIO-0.8 in 180 min under illumination, and the bactericidal rates were 99.10%, 97.32% and 96.3% for P. aeruginosa , S. aureus and E. coli, respectively, in 60 min. Based on the energy band structure of the semiconductor and radical trapping experiments, the S-scheme heterojunction was associated with the enhanced photocatalytic properties.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Lili Ma,Xueting Feng,Fanghui Cai,Chunyu Sun,Hanming Ding
Metal-organic frame materials are intensively investigated in catalysis due to their outstanding thermal stability, large specific surface area, and ultra-high porosity. In this work, a cobalt-doped zirconium-based metal-organic framework, Co-UiO-66, was synthesized by the hydrothermal approach. Co-UiO-66 could successfully activate peroxymonosulfate (PMS) ions to produce reactive oxygen species for the degradation of rhodamine B (RhB) when it was used as a Fenton-like catalyst. The catalyst with 4% Co in mass in UiO-66 (4% Co-UiO-66) showed the highest degradation efficiency. About 97.3% of RhB (50 ml of 30 mg L −1 ) was degraded in 45 min under simulated sunlight when 10 mg of 4% Co-UiO-66 was used. The degradation efficiency was much higher than that when pure UiO-66 was used. Furthermore, it was even slightly higher than when cobalt ions were used as the activator. The single-atomic dispersion and confinement effect in Co-UiO-66, as well as the strong absorption in the visible light region are responsible for the high catalytic efficiency.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Shiyu Zhang,Qiuyu Qiao,Yangfeng Wen,Kena Ren,Xiaoyu Ma,Haisheng Tao
A novel composite of acetic acid-modulated AC-NH 2 -MIL-101(Fe) was prepared by mild chemistry . The catalyst was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), Brunaure-Emmett-Teller (BET) and X-ray photoelectron spectroscopy (XPS). Acetic acid can control the crystal size, so that the catalyst had a large specific surface area (99.35 m 2 ·g −1 ) and pore size (0.13 cm 3 ·g −1 ), the adsorption amount of Rhodamine B (RhB) up to 446.965 mg·g −1 , after the addition of peroxydisulfate (PDS), the catalytic degradation efficiency of RhB was as high as 99.7%. Electronic paramagnetic resonance spectrometer (EPR) and quenching experiments showed that the catalytic process may involve radical (·OH, SO 4 -· and O 2 ·- ) and non-radical ( 1 O 2 ) processes, in which the contribution of 1 O 2 to degradation reached 63.55% and played a major role.
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