CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Usman Farooq,Xudong Hu,Jingyi Shang,Shuang Li,Jun Long,Lin Wang,Xinhai Wang
The increasing presence of pharmaceutical contaminants, such as dipyrone (DIP), in water systems highlights the urgent need for innovative and sustainable remediation technologies. This study examined the degradation of DIP using a chalcopyrite (CP)-activated peracetic acid (PAA) system, highlighting its potential for the removal of pharmaceutical pollutants. Experimental and statistical parameter optimization suggested that approximately 85.5 % of DIP degradation and 60 % of mineralization were achieved with CP (4 g/L) and PAA (10 mM) at neutral pH. Scavenger and probe experiments confirmed the presence of hydroxyl radicals ( • OH) and alkyl radical species in the CP/PAA system, but •OH was the primary contributor to DIP degradation. The surface-active sites confirmed that heterogeneous Cu(I) exerted more significant influence than Fe (II) of CP, producing 4.21 and 2.35 mg/L, respectively. The presence of reductive sulfur species in the CP allowed the capture of additional protons, creating sulfur vacancies and further strengthening the cycling of Cu and Fe species. DFT analysis confirmed that the FeCuS 2 -Fe adsorption energy (−3.71 eV) and the HOMO-LUMO gap of FeCuS 2 -Fe (0.03 eV) were critical to produce radicals. The CP/PAA system is suitable for DIP degradation and contributes significantly to the degradation of other environmental pollutants. It retained its capacity to degrade above 65 % for up to five consecutive cycles, offering a new and innovative method for water treatment.
研究领域:
环境科学
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化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2017
·
IF 6.216
Lian-Kui Wu,Hao Wu,Hui-Bin Zhang,Hua-Zhen Cao,Guang-Ya Hou,Yi-Ping Tang,Guo-Qu Zheng
In this work, graphene oxide (GO) and copper ferrite composite was synthesized on Fe-Ni foam via a one-step hydrothermal method. The foam substrate not only acts as holding material for GO and copper ferrite, but also makes this adsorbent convenient to recycle. The morphology and surface composition of the graphene oxide/copper ferrite foam (GCFF) were analyzed by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectra. The adsorption behavior of As(III) and As(V) onto the GCFF was studied as a function of solution pH, temperature, contact time, initial concentrations, and competing ions. Results show this GCFF is an efficient adsorbent for arsenic with high adsorption capacities for both As(III) and As(V) owing to the synergistic effect of CuFe 2 O 4 and GO. The maximum adsorption capacities for As(III) and As(V) are 51.64 and 124.69 mg g −1 , respectively. Adsorption isotherms study indicates a Langmuir model of adsorption. In addition, the GCFF also reveals good recyclability due to the unique foam structure and the adsorption capacity is almost not deteriorated after eight recycles. Column experiment suggests that 96% As(V) can be removed from water solution after 100 bed volume test.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Donghai Wu,Guanghua Lu,Jingjing Yao,Chao Zhou,Fuli Liu,Jianchao Liu
Copper ferrite modified carbon nanotubes (CuFe 2 O 4 /CNTs) were synthesized and employed as adsorbents/catalysts to assist electro-peroxone treatment of aqueous emerging pollutant fluconazole (FLC). Results suggest that the synthetic CuFe 2 O 4 /CNTs integrated the CNTs adsorption and ferrite magnetic abilities, showing a fast FLC removal and an excellent recyclability. The pseudo-second-order equation and the Langmuir isotherm model could well elaborate the adsorption of FLC on prepared catalysts. Compared to individual processes, electro-peroxone treatment exhibited a synergetic degradation of FLC. Approximately 89% FLC transformation was observed in the CuFe 2 O 4 /CNTs catalytic electro-peroxone process, 10% higher than that without catalysts, implying that CuFe 2 O 4 /CNTs could enhance the peroxone oxidation. Increasing of inlet gasphase ozone concentration (7.2–29.7 mg/L), catalysts dose (0.1–0.8 g/L), initial solution pH (3–11), and reaction temperature (10–30 °C) could improve the treatment efficiency, while initial FLC concentration (5–40 mg/L) and natural organic matter contents (humic acid, 0–20 mg/L) have opposite effects. The role of cathodic current density (10–60 mA/cm 2 ) was complex, 40 mA/cm 2 was observed as the optimal value. Furthermore, the degradation of FLC followed the hydroxyl radicals (HO ) oxidation mechanism. The production of HO was mainly via peroxone reactions, and the presence of CuFe 2 O 4 /CNTs could catalytic ozone and H 2 O 2 decomposition, thereby promoting HO generation. Although the magnetic CuFe 2 O 4 /CNTs had not shown obvious microelectrode characteristics, it combined adsorption and catalytic peroxone oxidation, may serve as the catalyst for electro-peroxone process.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
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2023
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IF 4.1
Adeel Ahmed,Rusul Alabada,Muhammad Usman,Asma A. Alothman,Muhammad Khurram Tufail,Saikh Mohammad,Zubair Ahmad
The aquatic ecosystems have been at high risk of destruction for the last many years due to the production and disposal of organic dyes from various textile and paint industries. A serious attention is required to cope with this environmental contamination by the removal of these dyes. An extremely effective and highly adaptive photocatalyst , La-CuFe 2 O 4 /g-C 3 N 4 (LCFO/CN), was prepared by hydrothermal technique. The synthesized catalysts were carefully analyzed using a variety of characterization techniques in order to investigate the interaction among their catalytic activity and material characteristics. The Rhodamine B (RhB) dye was used to investigate the photodegradation efficiency of the LCFO/CN photocatalyst . An excellent photodegradation of 97.35 % was observed by the LCFO/CN-2 heterojunction photocatalyst compared to pure CFO (62.73 %), LCFO (67.13 %), and LCFO/CN-1 (83.14 %), respectively, under constant reaction conditions ([catalyst] = 0.4 g/L, [RhB] = 30 mg/L, pH = 6.0, T = 25 ± 1 °C). This enhancement of photodegradation of the RhB dye by the LCFO/CN-2 photocatalyst was due to an enhancement in surface area, an increase in active sites, and a reduction in bandgap energy. The effect of different factors was also determined by varying the reaction conditions. The generation of reactive oxygen species was accomplished through trapping agents and electron paramagnetic resonance analysis. The photostability and reusability of the photocatalyst LCFO/CN-2 nanocomposite were evaluated by performing five successive experiments under predefined reaction conditions. Ultimately, this work will provide an economically feasible and environment-friendly photocatalyst for the effective degradation of RhB dye in water bodies.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
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2021
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IF 6.901
Jiankang Tan,Shenghang Xu,Huibin Zhang,Huazhen Cao,Guoqu Zheng
Copper ferrite spinels (CFOs) show potential application for use in the field of water electrolysis. However, CFOs are prepared using traditional fabrication methods and as a result always exist in powder form, making them difficult to utilise in applications. In this work, a porous bulk CFO material was fabricated via the milling and sintering of metal oxides, which can be used directly as an electrode. This CFO shows excellent oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activities. The results show that preparing the CFO under an argon (Ar) atmosphere, at high temperature and with a milling pretreatment improves the density of oxygen vacancies (OVs) in the material, thereby enhancing its ability to electrolyse water. The CFO shows high OER and HER performance when sintered at 1000°C under an Ar atmosphere and milled. In 6 M KOH solution at 10 mA cm −2 , the OER and HER overpotentials of CFO are as low as 290 and 241 mV, with OER and HER Tafel slopes of 75.5 and 114 mV dec −1 . The synthesis route developed in this study is versatile, with the CFO electrode produced exhibiting high performance in water electrolysis.
研究领域:
材料科学
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电化学
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能源转换
✓ 已验证
产品关联
DOI
高影响因子
FUEL
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2022
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IF 8.035
Weimin Wang,Hui Li,Ming Zhang,Fengqi Zhao,Siyu Xu,Changjian Wang,Zhao Qin,Ting An,Kangzhen Xu
Energetic materials have been widely employed in both military and aerospace fields. Nanothermite has superior energy properties and better combustion performance compared with conventional organic energetic materials. In this paper, a novel nitrocellulose coated aluminum/copper ferrite (Al/CuFe 2 O 4 @NC) thermite composite with moderate energy release was assembled via electrospray. The intimate contact and uniform distribution between the fuel (Al) and oxidizer (CuFe 2 O 4 ) are achieved in Al/CuFe 2 O 4 @NC microparticles. The thermochemical reactivity, laser ignition and combustion performance of Al/CuFe 2 O 4 @NC were investigated and compared with those of Al/CuO@NC, Al/Fe 2 O 3 @NC and physical mixture of Al and CuFe 2 O 4 (PM. Al + CuFe 2 O 4 ). The thermite reaction of Al/CuFe 2 O 4 @NC composite is dominated by the solid–solid reaction, which is similar to that of Al/CuO@NC and Al/Fe 2 O 3 @NC. Al/CuFe 2 O 4 @NC composite show a short ignition delay time of ∼ 4.0 ms and a moderate combustion process. The burning rates of Al/CuFe 2 O 4 @NC can be adjusted in the range of ∼ 0.39–1.77 m·s −1 by varying the content of NC in composite. In addition, the pressurization characteristics and condensed combustion products of thermite composites with different oxidizers were also investigated. The results indicate that the oxidizer and architecture have considerable effects on the thermochemical reactivity, laser ignition and combustion performance of thermite composite. The large heat release and superior ignition and combustion performance can be achieved by electrospray technology, which is an effective approach for enhancing interfacial contact.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Qiunan Sun,Xuejiang Wang,Yiyang Liu,Yanan Zhang,Siqing Xia,Jianfu Zhao
In this study, floating carbon nitride incorporating copper ferrite catalyst (CNCFEp) was synthesized by a simple coprecipitation-calcination method. The prepared catalyst was applied to the catalytic activation of peroxymonosulfate (PMS) for the degradation of antibiotics under visible light irradiation (Vis/CNCFEp/PMS system). In the presence of CNCFEp (2.0 g/L) and PMS (0.1 g/L), 97.6 % of sulfamethazine (SMT, 10 mg/L) was degraded in 30 min under neutral conditions, whereas negligible influence was observed accompanied by water matrixes. The floating composite catalyst showed excellent stability after 5 times recycling experiments. Singlet oxygen ( 1 O 2 ) and high-valent oxo-metal species were unveiled to be the major reactive oxygen species (ROS), rather than conventional hydroxyl radicals or sulfate radicals. These nonradical species were produced by direct oxidation or the transformation of superoxide ions and metastable metal composite at neutral pH. SMT was broken down by four degradation pathways in this system and a remarkable reduction in toxicity has been demonstrated by the quantitative structure–activity relationship (QSAR) prediction. Likewise, the nonradical species were capable of inactivating the bacteria ( E. coli) . This work was the first study dedicated to the mechanism of PMS activation by CNCFEp and provides a novel catalytic system for removal of organic contaminants and bacteria in environmental waters.
研究领域:
环境科学
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催化材料
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水处理技术
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产品关联
DOI
高影响因子
Energetic Materials Frontiers
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2021
·
IF 0
Jinghua Wang,Jingjing Wang,Shaojie Wang,Hui Li,Qilong Yan,Kangzhen Xu
As part of our ongoing search for high-performance nanoenergetic materials, we herein used self-assembly guided by negatively charged graphene oxide (GO) to fabricate a high-energy Al/GO/CuFe 2 O 4 nanocomposite with a dense layered structure featuring evenly mixed Al and CuFe 2 O 4 nanoparticles uniformly loaded on the GO surface. Investigation of the effects of the equivalence ratio ( Φ = 1.00–1.75) showed that the heat release achieved at the optimal value of Φ = 1.50 (3175 ± 65 J·g −1 ) exceeded that of most known thermites, while the fierce ignition process of this composite was characterized by an ignition delay time of (0.025 ± 0.002) s, a flame propagation speed of (14.3 ± 3.8) m·s −1 , and a continuous reaction duration of (33 ± 0.58) ms. In addition, the nanocomposite with Φ = 1.00 effectively catalyzed the thermal decomposition of 1,3,5-trinitroperhydro-1,3,5-triazine (RDX) and ammonium perchlorate (AP), decreasing their decomposition temperatures by 7.4 and 64.8 °C, respectively, reducing their apparent activation energies of decomposition by 118.7 and 18 kJ·mol −1 , respectively. And the constant-volume combustion enthalpies of RDX and AP increase with the addition of Al/GO/CuFe 2 O 4 . The reason of this enhanced performance was probed by analyzing the nanocomposite assembly process, and a plausible assembly mechanism was proposed.
研究领域:
材料科学
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化学工程
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纳米技术
✓ 已验证
DOI
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 10
·4331-4336
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IF 9.931
Shu-Yu Zhao,Bing Zhang,Hui Su,Jun-Jun Zhang,Xin-Hao Li,Kai-Xue Wang,Jie-Sheng Chen,Xiao Wei,Pingyun Feng
Composites of nano-sized delafossite CuFeO2 with 10–20 nm diameter and carbon nanotubes (CNTs) are constructed through a facile, one-pot hydrothermal process. The obtained nitrogen-free composites demonstrate promising electrocatalytic activity for the oxygen reduction reaction (ORR) in alkaline media. The introduction of CNTs facilitates the formation of nano-sized CuFeO2 particles. The synergistic effect between the nanosized delafossite CuFeO2 and carbon nanotubes endows the composites with a high electron transfer ability contributing to their robust ORR performance in 0.1 M KOH. This synthetic approach represents a promising method for the preparation of non-precious metal based electrocatalytic materials.
研究领域:
材料科学
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电化学
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纳米催化
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能源材料
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表面科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）