Reaction Chemistry & Engineering
·
2024
·Vol. 9
·期 3
·728-739
·
IF 3.4
Tongtong Wu,Weili Gao,Jiehe Zhang,Mingxu Hao,Shiyu Zhang,Haisheng Tao
As a typical antibiotic, tetracycline is ecotoxic and prone to bacterial resistance, producing superbugs and causing a public ecological crisis, thus raising the need to eliminate tetracycline from the aqueous environment. In this work, magnetic catalyst Fe3O4@HKUST-1 was prepared for catalyzing the degradation of tetracycline by persulfate. X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometry were used to characterize the catalyst, and the results show that the catalyst had good crystallinity and magnetic properties. Tetracycline removal in the Fe3O4@HKUST-1/persulfate system reached 84.80%, and the catalyst was easily recovered from the solution due to its good magnetic properties. Mechanism analysis revealed that the non-radical pathway was the main degradation channel in the Fe3O4@HKUST-1/persulfate system, and 1O2 was the main reactive oxygen species generated from Ov on the surface of the Fe3O4@HKUST-1 catalyst. Tetracycline degradation was achieved by hydroxylation, demethylation, decarbonylation, dehydroxylation and the cleavage of C–N bonds. This finding holds significant value in further comprehension of the catalytic activation mechanism of metal–organic frameworks derivatives on persulfate and provides novel ideas for efficient water treatment technology development.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 2
·期 6
·1795-1801
·
IF 0
Ling Li,Xiao Lan Liu,Ming Gao,Wei Hong,Gui Zhen Liu,Lu Fan,Bin Hu,Qing Hua Xia,Li Liu,Gong Wu Song,Zu Shun Xu
The adsorption processes of methylene blue from aqueous solution on Fe3O4/HKUST-1 and Fe3O4/HKUST-1/GO composites were compared. The addition of GO has greatly decreased the surface area and pore volume, led to smaller pore size, and enhanced the adsorption capacity of Fe3O4/HKUST-1/GO. The different interesting phenomena and the effect of GO were analyzed. The high adsorption capacity, excellent reusability and stability make Fe3O4/HKUST-1/GO attractive for the removal of MB from aqueous solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
FUEL
·
2018
·
IF 4.908
Wenlei Xie,Fei Wan
The main purpose of this present work is to fabricate a magnetically recyclable solid catalyst for the production of biodiesel to meet the demand of green and clean production. To accomplish this, the core–shell structured Fe 3 O 4 @HKUST-1 composites with a magnetic core and a porous metal-organic framework shell were fabricated by using a versatile Layer-by-Layer assembly method, and then basic ionic liquids were encapsulated within the core–shell magnetically responsive material, resulting in a solid hybrid base catalyst. Various techniques such as XRD, TEM, FT-IR, VSM and nitrogen adsorption–desorption were employed to characterize the as-prepared solid base catalyst. The characterization results revealed that Fe 3 O 4 nanoparticles were well coated with metal-organic framework HKUST-1 with the formation of core–shell structured nanocomposites, and moreover the basic ionic liquid had been successfully encapsulated within the magnetic nanocomposites. Furthermore, the solid base catalysts possessed superparamagnetic behavior and high saturation magnetization, allowing them to be facilely separated from the reaction mixture by using an external magnetic filed. The solid base catalyst appeared to be an efficient and environmentally benign catalyst for the transesterification of soybean oil with methanol for the production of biodiesel, giving 92.3% oil conversion to methyl esters within 3 h with a catalyst loading of 1.2 wt% and a methanol/oil molar ratio of 30:1 at reflux temperature of methanol. The solid catalyst could be readily recovered by simple magnetic decantation and reused for several times without significant degradation in its catalytic activity.
研究领域:
化学工程
·
催化材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Tongtong Wang,Xuedan Song,Hailong Xu,Miaomiao Chen,Jie Zhang,Min Ji
A recyclable and magnetic nanocomposite catalyst (IL/Fe3O4@HKUST-1) was synthesized via grafting ionic liquid (IL) [AEMIm]BF4 into magnetically functionalized metal–organic framework Fe3O4@HKUST-1 in a water–ethanol media. The properties of IL/Fe3O4@HKUST-1 were fully characterized by powder X-ray diffraction, electron microscopy, Fourier-transform infrared spectroscopy, nitrogen adsorption–desorption, density-functional theory, and a magnetic property measurement system. IL/Fe3O4@HKUST-1 showed high activity in the solvent-free cycloaddition of CO2 with epoxides under mild conditions. Furthermore, the catalyst can be easily separated from the reaction mixture, and the recycled catalyst maintained high performance for several cycles. The synergistic effect of the Lewis acid and base sites in IL/Fe3O4@HKUST-1 contributes to its greater reactivity than individual IL or HKUST-1.
研究领域:
催化
·
材料科学
·
化学工程
·
环境化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NANO
·
2025
·
IF 1.1
Peixuan Zou,Yusong Pan,Kuen-Song Lin,Wei-Chin Tsai,Yinghai Xie,Wenjie Luo,Run Huang,Xiuling Lin
The use of nanocarriers with combined photothermal and chemotherapeutic methods has been widely accepted as a promising anti-tumor treatment strategy. Leveraging the tumor-specific microenvironment, these nanocarriers enhance therapeutic outcomes. Our research developed an innovative drug carrier platform, which was composed of the Metal-Organic Framework (MOF) HKUST-1 as a drug carrier and the Fe 3 O 4 nanoparticles as a photothermal functional phase. This novel carrier demonstrated an impressive drug loading rate of 110% for Doxorubicin (DOX), suggesting a high capacity for drug delivery. Additionally, the as-prepared nanocarrier also displayed excellent photothermal conversion capability, which can efficiently convert light into heat under near-infrared light with 980 nm irradiation, thus utilizing photothermal therapy for tumors. The release mechanism of pH sensitivity of the carrier expedited drug release under acidic conditions, aligning with the tumor microenvironment. Biocompatibility assays confirmed the excellent compatibility of Fe 3 O 4 @HKUST-1 with normal tissue cells. While photothermal therapy alone successfully induced apoptosis in tumor cells, the treatment’s efficacy requires improvement as cell viability remained at 80%. Conversely, combining chemotherapy with photothermal therapy decreased cell viability to 30%, thereby effectively inhibiting proliferation. In sum, the Fe 3 O 4 @HKUST-1 drug delivery system exhibits significant potential in medical applications due to its dual-therapy approach.
✓ 已验证
DOI
高影响因子
CATALYSIS LETTERS
·
2019
·Vol. 150
·期 3
·815-825
·
IF 2.372
Huang Yan-Feng,Zhang Lu,Ma Li,Li Ying,Zhong Chongli
Abstract Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were achieved using nanoparticle-encapsulated MOFs Fe 3 O 4 @HKUST-1 as both a precursor and a self-sacrificing template. Fe 3 O 4 @HKUST-1 was thermally converted into magnetic Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites in different atmosphere (N 2 and air). The resulting composites not only kept superparamagnetic characteristics, but also exhibited improved peroxidase-like catalytic activity and high stability when compared to the precursor Fe 3 O 4 @HKUST-1. The morphology, crystal structure, magnetic and porous properties of Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were characterized, and the kinetics parameters and the influence factors on the peroxidase-mimicking activity such as temperature, pH and H 2 O 2 concentration were evaluated. On account of the excellent peroxidase-like activity, the as-prepared Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were successfully used for the catalytic removal of methylene blue (MB) dye with H 2 O 2 oxidant. This work provides an effective way to fabricate highly reactive MOFs-derived biomimetic catalysts, which have potential applications in bioassays and pollutant degradation. Graphic Abstract Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were achieved using Fe 3 O 4 nanoparticle-encapsulated HKUST-1 as self-sacrificial templates and demonstrated excellent peroxidase-like activity.
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）