ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 25
·期 31
·31705-31717
·
IF 2.8
Zheng Xiang,Wang Jinlin,Xue Xiaolong,Liu Wanxia,Kong Yadong,Cheng Rong,Yuan Donghai
In this research, the adsorptive removal of diclofenac sodium, one of the representative pharmaceuticals and personal care products, from aqueous solution using Fe 3 O 4 @MOF-100(Fe) magnetic microspheres was studied for the first time. The Fe 3 O 4 @MOF-100(Fe) microspheres exhibit strong magnetism and stability, which were observed as a core-shell structure. The maximum adsorption capacity of Fe 3 O 4 @MOF-100(Fe) for diclofenac sodium can reach 377.36 mg L −1 , which was higher than most of the adsorbents reported. The adsorption kinetics follows the pseudo-second-order kinetic equation. And the adsorption equilibrium of DCF can be described with Langmuir isotherm. In the cycle experiment, Fe 3 O 4 @MOF-100(Fe) material performed high adsorption efficiency for low-concentration diclofenac sodium solution, and the removal rate can still reach 80% after 5 cycles of adsorption without desorption. The mechanisms including electrostatic interaction, H-bond interaction, and π-π interaction that coexisted in the adsorption processes would be of benefit to enhance the adsorption capacity. The Fe 3 O 4 @MOF-100(Fe) magnetic microspheres offer exciting opportunities for further application.
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Ce-Ce Hu,Qiang Gao,Zhi-Xiu Zhu,Li-Li Chang,Wen-Jun Zhou,Kai-Sheng Xia,Bo Han,Cheng-Gang Zhou
Multi-ion-responsive probes are particularly attractive due to their high detection efficiencies and potential cost reductions, while there still remains the formidable challenge of discriminating different metal ions in pure aqueous media. Herein, a novel imidazolium chloride ionic liquid-grafted rhodamine B salicylaldehyde hydrazone (IMI-SARhBH) was rationally designed and developed as a promising multi-ion-responsive probe for the colorimetric detections and individual identifications of Cu 2+ and Al 3+ in 100% aqueous solutions. Benefitting from the remarkably hydrophilic nature of the grafted ionic liquid , the IMI-SARhBH was highly water-soluble, and showed excellent sensing performances for detections of Cu 2+ and Al 3+ under pure aqueous conditions in terms of high sensitivity, satisfactory selectivity, and strong anti-disturbance ability. More importantly, dissociation of the grafted ionic liquid in water made the probe positively charged, which caused electrostatic repulsion between itself and metal ions and thus offered the chance to differentially recognize Cu 2+ and Al 3+ . The Cu 2+ was repelled relatively weakly by IMI-SARhBH and thus identified quickly (<1 min), while the sensing detection of Al 3+ required a longer time (5 h) due to the relatively stronger electrostatic repulsion. Accordingly, a new and convenient method for individual identifications of Cu 2+ and Al 3+ from Cu 2+ –Al 3+ -coexisted solution was also successfully established.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Guohui Wang,Qixin Zhang,Lailai Qin,Kaixuan Tan,Chunguang Li,Lianshun Li,Tinggui Yang,Xiaojuan Liu
A novel metal-organic framework (MOF) material, MIL-100(Fe)-DMA, was synthesized using the solvothermal method. The structure of the MOF was characterized using scanning electron microscopy-energy dispersive X-ray spectroscopy, N 2 adsorption–desorption isotherms, X-ray diffraction analysis, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and Mössbauer spectroscopy. Batch adsorption experiments were performed to investigate the effects of initial Sr 2+ and Cs + concentrations, adsorption time, pH, and coexisting cations on the adsorption performance of the material. The adsorption mechanism was further elucidated using adsorption kinetics and isotherm models. The results indicated that the adsorption of Sr 2+ and Cs + does not significantly affect the MOF material structure. As reaction time and initial ion concentration increased, the adsorption capacity of MIL-100(Fe)-DMA for Sr 2+ and Cs + increased rapidly and then gradually reached equilibrium. Optimal adsorption occurred under alkaline conditions, with maximum adsorption capacity observed at pH = 8. The adsorption process for Sr 2+ and Cs + was well described by the pseudo-second-order kinetic model, the Weber–Morris model, and the Langmuir adsorption isothermal model. The adsorption process was mainly identified as monolayer chemical adsorption, influenced by multiple factors. Characterization combined with density functional theory calculations revealed that the unsaturated carboxylic acid groups on the surface of the MOFs play a crucial role in the interaction with Sr 2+ and Cs + .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Hongbing Mao,Huijun Wang,Yanyan Xing,Deyong Wang,Xiujun Cao,Jie Yu,Junya Yan
In this work, a boronic acid decorated mesoporous iron-based metal-organic framework (MIL-100(Fe)-B) nanozyme as an efficient immobilization matrix for glucose oxidase (GOx) was designed and prepared through a facile microwave-assisted metal-ligand-fragment co-assembly strategy. Compared with the unboric acid-modified MIL-100(Fe), boron-doped MIL-100(Fe) exhibited enhanced peroxidase-like activity, which was mainly due to the introduced B causing MIL-100(Fe) defects, accelerating mass transfer, facilitating more active sites for H2O2 decomposition. Besides, the MIL-100(Fe)-B nanozyme possessed sufficient recognition sites for immobilizing glucose oxidase with little enzyme leakage to form a cascade nanozyme with both peroxidase-like and cascade catalytic activities. A colormetric biosensor based on the integrated nanozyme reactor (GOx@MIL-100(Fe)-B) was developed for glucose detection. The proposed cascade biosensor had a linear range of 5-150 μM and a limit of detection (LOD) of 0.97 μM (3.3 δ/S). Interestingly, a portable microfluidic paper-based analytic device (μPAD) biosensor based on the cascade nanoplatform was further fabricated for visualized detection of glucose combined with a ColorPicker App on smartphone. It indicated that the integrated nanozyme GOx@MIL-100(Fe)-B was a promising candidate for glucose detection and provided a potentially analytical avenue for biosensing and other applications.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Bolun Yu,Jun Chen,Quanzhang Liu,Shuoyang Li,Xiaohang Zhang,Bowen Liang,Zuhong Lin,Haipu Li,Jingjing Yao
The use of metal–organic framework-derived materials for removing micropollutants from water is increasing, but precise composition control remains a challenge. In this study, 14 MIL-100(Fe)-derived materials were synthesized to adsorb and remove antipyrine (ANT) from water by optimizing the heating rate, pyrolysis temperature, and activation methods. The adsorbents demonstrated excellent ANT removal performance across a pH range of 3 to 11, as well as in complex water bodies. They also exhibited easy recovery and outstanding regeneration capabilities. Under the optimized conditions (i.e., ANT content: 10 mg/L, M-600–2 dosage: 0.1 g/L, and pH: 7), M-600-10 displayed the highest adsorption capacity (23.10 mg/g for ANT) while MIL-100(Fe) had limited adsorption capability (2.56 mg/g for ANT). The adsorption process was exothermic and spontaneous, influenced by both membrane diffusion and intraparticle diffusion, and followed the Freundlich and pseudo-second-order models. Despite variations in surface areas (75.70–261.91 m2/g), total pore volumes (0.2019–0.5984 cm3/g), and average pore sizes (7.47–13.99 nm), there was no strong linear relationship with adsorption capacity (7.47–15.99 mg/g). The major components, including Fe/pyrrolic N-doped graphene (PING), Fe3C/PING, Fe3O4/PING, and PING, had calculated adsorption energies of −0.94, −2.16, −0.79, and −2.24 eV, respectively, which correlated positively with Bader charge transfer numbers. The adsorbents relied on van der Waals forces for ANT adsorption, with PING exhibiting the strongest interactions and Fe3O4/PING exhibiting the weakest. These findings enhance the theoretical understanding of derived materials and expand their application in water purification.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hui Li,Weiguo Liu,Zhihao Han,Ndzondelelo Bingwa,Tianyu Wang,Hengdi Li,Yunpu Wang,Feiqiang Guo,Xiaoling Ma,Chenggong Sun
Microwave heating (MW) is known for its efficacy in promoting transesterification for biodiesel production. However, the microwave-induced catalysis, linked to catalyst absorbing capability, remains poorly understood. Herein, a class of alkaline catalysts with strong microwave absorption were synthesized, validating their positive impact on transesterification. Various methods were used to reveal the relationship between microwave absorbing capacity and physicochemical properties of the synthesized catalyst (KF/Mg-MIL). Results indicated the previously recognized basicity’s role for KF/Mg-MIL was surpassed by microwave absorbing capability (permittivity and permeability) in MW (2.45 GHz). KF/Mg-MIL, with ε r = 4.94′- j 1.09″ and μ r = 1.03′- j 0.024″, efficiently transformed microwave into thermal energy via the dielectric loss and magnetic loss, saving 50 % energy consumption and reducing 1051.61 kg CO 2 for per ton biodiesel compared to water bath heating (WB). Notably, “non-thermal” effect was observed with KF/Mg-MIL in MW, which reduced activation energy by 2.49 kJ/mol and increased the frequency factor by 793.32 min −1 in comparison to WB.
✓ 已验证
产品关联
DOI
高影响因子
Biomedical Materials
·
2024
·Vol. 19
·期 2
·025018
·
IF 3.9
Antong Jiang,Teng Wang,Xiaoling Lu,Yuxiang Tian,Zihan Jiang,Bin Xu,Hanyuan Zhang,Weijun Fang
The application of both chemotherapy and ferrotherapy together has shown great potential in increasing the effectiveness of cancer treatment. To achieve such a combination, we herein have synthesized Fe3O4 core/MIL-100(Fe) shell nanocomposites (FM) that can be used for tumor chemo-ferroptosis combination therapy. In these nanocomposites, the anticancer drug 10-hydroxycamptothecin (HCPT) and iron ions could be co-delivered into tumors. On one hand, the released HCPT molecules can enter the cell nucleus and bind with DNA, resulting in induction of tumor cell apoptosis. On the other hand, the iron ions could react with H2O2 leading to the production of ROS through the Fenton reaction, thereby triggering tumor cell ferroptosis. Consequently, a superior antitumor effect was achieved through the combination of the apoptosis and ferroptosis. Additionally, the Fe3O4 core endowed FM with high performance for magnetic resonance imaging, which further provided novel avenues for imaging guidance therapy. Therefore, we anticipate that application of these nanocomposites could have great potential in the field of tumor therapy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 14
·1135
·
IF 4.3
Mingzhang Zhu,Zeren Zhou,Yanhong Gu,Lina Bing,Yuqin Xie,Zhenjiang Shen,Wanping Chen
In sharp contrast to photocatalysis and other prevalent catalytic technologies, tribocatalysis has emerged as a promising technology to degrade high-concentration organic dyes in recent years. In this study, BaTiO3(BTO) nanoparticles were challenged to degrade methyl orange (MO) solutions with unprecedentedly high concentrations through magnetic stirring. With BTO nanoparticles and home-made PTFE magnetic rotary disks in 50 mg/L MO solutions, 10 h of magnetic stirring resulted in 91.4% and 98.1% degradations in an as-received glass beaker and in a beaker with a PTFE disk coated on its bottom, respectively. Even for 100 mg/L MO solutions, nearly complete degradation was achieved by magnetic-stirring-stimulated BTO nanoparticles in beakers with the following four kinds of bottom: 97.3% degradation in 30 h for a glass bottom, 97.4% degradation in 20 h for a PTFE coating, 97.9% degradation in 42 h for a Ti coating, and 97.4% degradation in 74 h for an Al2O3coating. Electron paramagnetic resonance (EPR) analyses revealed that the generation of reactive oxygen species (ROS) by magnetic-stirring-stimulated BTO nanoparticles is dramatically affected by the bottom material of beakers. These findings suggest an appealing prospect for BTO nanoparticles to utilize mechanical energy for sustainable water remediation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2022
·
IF 7.758
Zhen Jiao,Zhijia Miao,Heluan An,Qing Li,Xiangyuan Meng
Water eutrophication caused by phosphate emissions has become a serious environmental issue. In this study, we used the solvothermal method to prepare a novel Ce-doped MIL-100(Fe). Scanning electron microscope observations suggest that Ce-doped MIL-100(Fe) consisted of irregular polyhedrons in the size range of tens of micrometers. Spectroscopy results show that cerium atoms (Ce) were successfully doped into the MIL-100(Fe) frameworks. The specific surface area and pore size of the Ce-doped MIL-100(Fe) were 2.6 m 2 /g and 3.4 nm, respectively. Adsorptive kinetics indicated that the pseudo-second-order model with a high correlation coefficient of ( R 2 : 0.9950) fitted better than the pseudo first-order model with R 2 of 0.9436. The adsorptive isotherms showed that for these adsorption reactions, the Langmuir model matched much better than the Freundlich model for this adsorption. These facts suggest that adsorption is chemical sorption, which occurred on a homogeneous surface. The adsorption capacity of the Ce-doped MIL-100(Fe) was as high as 12.03 mg/g. The adsorption capacity of the Ce-doped MIL-100(Fe) depended strongly on the solution pH, ionic strength, and the coexisted ions. The study also found that the precipitation reaction and complexation interaction might be dominated in the adsorption. This study may contribute to the design of bimetal organic frameworks, and might add new insights into the removal of phosphate.
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-10
·
IF 4.259
Wang Guojing,Jing Shengchang,Tan Yiwei
Shape control of noble metal (NM) nanocrystals (NCs) is of great importance for improving their electrocatalytic performance. In this report, branched Pd@Rh core@shell NCs that have right square prism-like arms with preferential exposure of Rh {100} facets (denoted as b-Pd@Rh-NCs thereafter) are synthesized and utilized as an electrocatalyst for the hydrazine electrooxidation (HEO) in acidic and alkaline electrolytes. The b-Pd@Rh-NCs are obtained by the heteroepitaxial growth of Rh on the pre-formed branched Pd NCs (denoted as b-Pd-NCs thereafter) core in the presence of poly(vinyl pyrrolidone) (PVP) and bromide ions. A comparative analysis of the voltammetric data for the HEO shows a higher activity on the b-Pd@Rh-NCs exposed with Rh {100} faces than on Rh black, the b-Pd-NCs, and Pd black in acid and alkaline solutions, indicating a structure sensitivity of the reaction. Analysis of the products from the b-Pd@Rh-NCs catalysed HEO reveals a very high hydrazine fuel efficiency, as determined by on-line differential electrochemical mass spectrometry (DEMS).
✓ 已验证
DOI
PubMed
高影响因子
ACS Omega
·
2019
·
IF 2.584
Xiaogang Liu,Guiru Du,Meng Li
Combining the advantages of reactive crystal facets and engineering defects is an encouraging way to address the inherent disadvantages of titanium dioxide (TiO2) nanocrystals. However, revealing the true photoreactivity origin for defective TiO2 with coexposed or predominant exposed anisotropic facets is still highly challenging. Here, the photoreactivity of TiO2 nanocrystals with respectively predominant exposed {001}, {101}, and {100} facets before and after Ti3+ doping under both ultraviolet and visible light was compared systematically. In detail, the photocatalytic H2 production for R-TiO2-001, R-TiO2-101, and R-TiO2-100 increased by a factor of 1.34, 2.65, and 3.39 under UV light and a factor of 8.90, 13.47, and 8.72 under visible light. By contrast, the photocatalytic degradation of methyl orange for R-TiO2-001, R-TiO2-101, and R-TiO2-100 increased by a factor of 3.18, 1.42, and 2.17 under UV light and a factor of 4.03, 2.85, and 1.58 under visible light, respectively. The true photocatalytic activity origin for the obtained photoreduction and photo-oxidation ability is attributed to the exposure of more active sites (under-coordinated 5-fold Ti atoms), the facilitated charge transfer among {001}, {101}, and {100} facets, and the Ti3+ energy state with variable doping levels to extend the visible light response. This work hopefully provides significant insights into the photoreactivity origin of defective TiO2 nanocrystals with anisotropic exposed facets.
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qiongya Jin,Ye Yang,Chen Yuan,Jinchang Lei,Weijie Song
The polymer electrolyte (PE) is the key component for a typical laminated WO 3 –NiO electrochromic device (ECD). However, the electrochemical fragility usually makes it be easily damaged by the parasitic side oxidation reaction from the Ni 4+ at nickel oxide to generate gas bubbles within a short term running. Herein, we disclose a viable strategy through adopting WO 3 covered NiO as counter electrode to address this problem. In this investigated case, to render the ECD with neutral color, our previously-developed Nb doped WO 3 , Li and Si co-doped NiO, and PVB based electrolyte are employed as the basic constituents. The results demonstrate that the sputtered WO 3 cover layer offers multiple advantages, involving forming an ultra-thin blocking layer to avoid a direct contact between nickel oxide and electrolyte, improving the film quality by removing the defects and achieving an effective W doping in nickel oxide matrix to ensure a highly cyclic stability, decreasing the Li + transport impedance to realize a rapid response, enhancing the device critical current density to 0.45 mA cm −2 to conduct a trade-off between response rate and lifetime, and constructing a homogeneous electric field to realize an uniform coloring or bleaching over a larger 100 cm 2 sized ECD.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）