ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Huanran Chen,Jiahong He,Jibin An,Qiang Xu,Zhilin Xing
Sulfamethazine is an antibiotic whose anti-degradability and potential for water pollution have become a threat to water contamination. This study designed a composite cathode of Fe-MOF-525/Ti 3 C 2 to effectively remove SMT through Photoelectro-Fenton (PEF). Characterization and photoelectrochemical test results indicate that Fe-MOF-525/Ti 3 C 2 contains abundant active sites and exhibits excellent catalytic performance for the oxygen reduction reaction (ORR). Tests demonstrated that under optimized conditions, the PEF system achieved a removal rate of 95.6% for SMT and a cumulative H 2 O 2 concentration of 53 mM within 120 minutes. Reactive oxygen species (ROS) capture experiments confirmed that •OH and •O 2 − are the main ROS responsible for the degradation of SMT. Further studies investigated the possible degradation pathways. Overall, this work demonstrates an example of pollution control resulting from the philosophy of green chemistry, which offers a promising pathway to reduce the chemical demand for advanced oxidation processes.
研究领域:
环境化学
·
水污染控制
·
高级氧化技术
·
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2024
·
IF 3.7
Dandan Zhou,Shilong Li,Luyi Chai,Jian Lu,Tianxiang Yu,Yuqing Sun,Wenheng Jing
ABSTRACT Two-dimensional (2D) catalytic ozonation membranes are promising for the treatment of micropollutants in wastewater due to simultaneous ozone-catalyzed degradation and membrane filtration processes. However, it remains challenging for 2D catalytic ozonation membranes to efficiently degrade micropollutants due to low mass-transfer efficiency and poor catalytic activity. Herein, Fe/Mn bimetallic metal–organic framework (MOF) intercalated lamellar MnO 2 membranes with fast and robust ozone-catalyzed mass-transfer channels were developed on the surface of the hollow fiber ceramic membrane (HFCM) to obtain 2D Fe/Mn-MOF@MnO 2 -HFCM for efficiently degrading micropollutants in wastewater. The intercalation of Fe/Mn-MOF expanded the interlayer spacing of the MnO 2 membrane, thereby providing abundant transport channels for rapid passage of water. More notably, the Fe/Mn-MOF provided enriched reactive sites as well as high electron transfer efficiency based on the redox cycling between Mn 3+ /Mn 4+ and Fe 2+ /Fe 3+ , ensuring the effective catalytic oxidative degradation of micropollutants including tetracycline hydrochloride (TCH), methylene blue, and methyl blue. Moreover, the carboxyl groups on the MOF formed covalent bonds (–COO–) with the hydroxyl groups in MnO 2 between layers, which increased the interaction between MnO 2 nanosheets to form stable interlayer channels. Specifically, the optimal composite membrane achieved a high removal rate of TCH micropollutant (93.4%), high water treatment capacity (282 L·m –2 ·h –1 ·MPa –1 ), and excellent long-term stability (1200 min). This study provides a simple and easily scalable strategy to construct fast, efficient, and stable 2D catalytic mass-transfer channels for the efficient treatment of micropollutants in wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Yuhang Jing,Feng Gong,Sijun Wang,Wenbin Wang,Peng Yang,Enkang Fu,Rui Xiao
Plasma-assisted ammonia synthesis (PAAS) can produce ammonia using highly energetic, electronically excited nitrogen and Hydrogen radicals at low temperatures and atmospheric pressure, which has been regarded as a prospective alternative to the Haber − Bosch process. PAAS can exclusively use renewable power (solar, wind, etc.) to achieve green, decentralized and efficient ammonia synthesis. However, current catalysts for PAAS are suffering from low efficiency, poor stability and cyclability. Herein, we demonstrate a one-step hydrothermal synthesis of Ni-Co bimetallic metal–organic frameworks (MOFs) for PAAS. Attributed to the amplified gas transport capability and bimetallic coupling, the Ni-Co-MOF exhibits significantly improved PAAS performance: 88.21 μmol g −1 ·min −1 , above 30 % increase over 5 wt% Ni/Al 2 O 3 . The high stability of Ni-Co-MOF under the harsh electric field enables its durable performance (36 h) and excellent cyclability (24 cycles). Finally, to determine the viability of PAAS for industrial applications, we construct a hypothetical zero-carbon ammonia plant using only renewable energy sources, and the outcomes indicate that PAAS has significant competitiveness for future ammonia production.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Xinmei Qian,Chunxiang Li,Mingyu Zheng,Jinglun Wang,Haowen Huang,Keqin Deng
Very few MOF-related derivatives have been applied for sensors. Sensitive analysis of antibiotics in food products is one of the crucial research fields. The work described the synthesis of magnetic electrocatalyst with FeCo alloy nanoparticles confined in S, N-doped bamboo-like carbon nanotubes (FeCo@S,N-CNTs) by using bimetallic MOF as precursor. For comparison, a series of materials were prepared and used to modify screen-printed electrode (SPE). Their electrocatalytic capacities were investigated for the electrochemical reduction of two antibiotics, chloramphenicol (CAP) and nitrofurantoin (NFT). By using cyclic voltammetry (CV) and differential pulse voltammetry (DPV), the magnetic FeCo@S,N-CNTs was found to possess the better electrocatalysis. Using the disposable FeCo@S,N-CNTs/SPE constructed by magnetic control, simultaneous analysis of CAP and NFT was achieved in linear ranges of 0.05–320.0 μM and 0.01–75.0 μM with the limit of detection of 20.0 nM and 3.5 nM, respectively. The real sample detection validated the practicability of FeCo@S,N-CNTs/SPE.
研究领域:
食品科学
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 42
·16546-16554
·
IF 3.069
Chang Liu,Jing Qiao,Xue Zhang,Dongmei Xu,Nannan Wu,Longfei Lv,Wei Liu,Jiurong Liu
In this paper, we report the facile synthesis of CoNi/C nanocomposites derived from bimetallic metal organic frameworks for electromagnetic wave absorption applications. The effects of carbonation temperature on the phase structure, morphology and microwave absorption properties of the derived nanocomposites were thoroughly studied. Micro-structure characterization results indicated that the obtained CoNi/C composites are composed of numerous fine particles with the size of 20 nm, and in the composites, Ni, Co, and C elements are uniformly distributed. Electromagnetic wave absorption property evaluation showed that CoNi/C obtained at 650 °C outperformed those samples prepared at 500, 800 or 950 °C. The minimum reflection loss (RL) of −74.7 dB could be achieved with a thickness of 1.8 mm at 15.6 GHz. The effective absorption bandwidth (RL ≤ −10 dB) ranged from 2.9 GHz to 18 GHz. This study shows that these porous Co–Ni/C nanocomposites derived from MOFs are attractive candidates as electromagnetic (EM) wave absorbers due to the combined advantages of excellent impedance matching and strong interfacial loss between metallic NPs and porous carbon composites.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yaqi Yang,Zhewei Zhang,Li Zhang,Zijian Zhao
The development of detection devices with rapid response, high sensitivity, and precise detection capabilities for heavy metal ions remains a research hotspot in environmental protection and food safety. In this study, a facile and efficient synchronous doping/etching strategy was employed to synthesize hierarchically porous bimetallic MOF-derived CeSn@C-10 material. Comprehensive characterization techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) revealed that the incorporation of Sn species significantly enhanced oxygen vacancy concentration in the CeO 2 lattice while stabilizing low-valent Ce 3+ species, thereby boosting the electrocatalytic activity for CeSn@C-10. The hierarchical porous architecture endowed the material with an enlarged specific surface area and improved accessibility to active sites. When fabricated into an electrochemical sensor (CeSn@C-10/GCE), it exhibited exceptional Cu 2+ detection performance with dual linear ranges of 0.2–5 μM and 5–60 μM, achieving a low detection limit of 38 nM (S/N = 3). The sensor demonstrated remarkable anti-interference capability and promising applicability in real-sample analysis. This work provides a novel strategy for designing hierarchically porous bimetallic electrochemical sensors through synergistic enhancement mechanisms.
研究领域:
环境监测
·
食品安全
·
电化学
·
纳米材料
·
传感器与生物传感器
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Hongyang Ma,Wen Zhang,Kun Yang,Zonglinsong Liu,Wanwan Zhang
Electrospun nanofiber membranes functionalized with metal-organic framework (MOF) are considered as a promising materials for removal contaminants from wastewater. In this study, a bottom-up approach was proposed for the preparation bimetallic MOF based polyacrylonitrile (PAN) electrospun nanofiber membranes. Polydopamine (PDA)-modified PAN nanofiber membranes increased the anchoring of Co/Zn-MOF nanoparticles, further leading to the formation of Co/Zn-MOF@PDA-PAN nanofiber membranes with secondary growth method. With the increasing of 2-MIM concentration, the surface roughness and hydrophilicity of Co/Zn-MOF@PDA-PAN exhibited the increasing tendency. In addition, the antibacterials rates of Co/Zn-MOF@PDA-PAN were 59.6% and 64.9% against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) after 1h, rising to over 99.9% after 24h, demonstrating rapid and effective antibacterial activity. Importantly, membranes showed excellent anti-adhesion properties against two experimental strains. The release of ROS from Co/Zn-MOF could disrupt bacterial physiological activities, leading to their death, which could be the primary antibacterial mechanism of nanofiber membranes. The adsorption isotherm of MOF@PAN was characterized by the Langmuir model, showing a maximum adsorption capacity of 564 mg/g for SY, while kinetic data were best fitted with the pseudo-second-order model. The bimetallic MOF-based nanofiber membranes will be an effective and promising materials for antibacterial applications and water purification.
研究领域:
环境科学
·
材料科学
·
生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinran Li,Jian Chen,Zaiyu Liu,Chengyu He,Jian Pang,Lilei Zhang,Fenglin Tang,Xiupei Yang
A bimetallic MOF derivative consisting of Fe and Co (Fe/Co 2 -MOF) by Co-doping MIL-101(Fe) was successfully synthesized for peroxymonosulfate (PMS) activation in acetaminophen (N-Acetyl-Para-Amino-Phenol, APAP) degradation. The presence of Co significantly accelerated the transfer of electrons due to the synergistic effect between Fe and Co bimetallic sites. Specifically, the reaction rate constant of APAP in the Fe/Co 2 -MOF + PMS system was three orders of magnitude higher than that of MIL-101(Fe) alone and 90 times higher than that of the MIL-101(Fe) + PMS system, respectively. At room temperature, 100 % of the APAP was degraded in 15 min with a Fe/Co 2 -MOF concentration of 0.05 g/L and a PMS concentration of 0.8 mmol/L across a wide pH range from 3 to 9. High-valence metal species (Co IV and Fe IV ) and electron transfer-dominated nonradical processes were responsible for the APAP degradation. Although singlet oxygen ( 1 O 2 ) was identified as the main active species in our study, the relative contribution of 1 O 2 was negligible. The catalytic performance was particularly notable in the practical implementation of hospital sewage treatment. However, it is still urgent to seek ways to relieve cobalt leaching of Fe/Co 2 -MOF. This strategy of Co-doping provides a clear illustration of modulating MIL-101(Fe) ultimately maximize their catalytic efficiency in PMS activation for water purification.
研究领域:
环境科学
·
催化化学
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Materials
·
2020
·
IF 2.705
Wan Jun,Li Junfeng,Xiao Zhiheng,Tang Dandan,Wang Bo,Xiao Yongjun,Xu Weilin
High-performance, good stability, low-cost, and environmentally friendly batteries are important for multifunctional electronics and electric vehicles. Compared with the high-energy density lithium-ion batteries, aqueous rechargeable battery has been extensively researched due to high safety, low cost and much better rate performance. Here, we report a one-step approach to fabricate porous Ni-Cu metal–organic framework (MOF) nanosheet arrays structures for stable energy storage with a high-energy (71.2 mWh cm−3) and high-stability (capacity retention of ≈91% after 2,500 cycles) performance. Furthermore, we synthesized various porous homogeneous Ni-Co, Ni-Zn, Ni-Fe and Ni-Mn bimetal MOF structures with high surface area and conductivity utilizing this rational design. This work provides a simple efficient strategy for constructing porous homogeneous bimetal MOF nanosheet arrays with high energy and stability performance, holding a great potential for future portable electronics.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·
IF 3.3
Yujie Zhang,Yingjiang Wang,Zhaohui Li,Lingbo Qu,Lanlan Yu
Nanozymes, which possess similar catalytic activities to natural enzymes, are considered promising alternatives to natural enzymes. In the present study, a new bimetallic Fe/Mn metal–organic framework (MOF) nanomaterial was synthesized by doping Mn in MIL-101(Fe). Despite the low doping amount of Mn, the Fe/Mn MOF displayed remarkably enhanced peroxidase-like activity, catalyzing the conversion of chromogenic substrate ABTS to blue-green ABTS˙+. Subsequently, the addition of environmental pollutant aminophenol isomers induced different color changes in a solution, which provided a simple and feasible approach to differentiate them by the naked eyes. Based on the effect of aminophenol isomers on the absorption spectrum of ABTS˙+, colorimetric methods were developed to quantitatively determine m-AP and p-AP with detection limits of 0.13 μM and 0.20 μM, respectively. Furthermore, taking advantage of a smart phone software-color recognizer to analyze the RGB value, a rapid detection method for m-AP was proposed, offering a solution to detect m-AP in the absence of any analytical instruments. This work verified the essential role of doping Mn in enhancing the enzyme-like activity of nanozymes. Simultaneously, the proposed simple, rapid, and accurate sensing method provided a new option to differentiate and determine aminophenol isomers, which has great potential for environmental application.
研究领域:
环境科学
·
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Liling Wang,Yanbin Wang,Yifeng Zhou
Bimetallic MOF derivatives have shown excellent performance as nano-enzymes in the field of catalysis. Herein, PdCo oxide nanoflowers with three-dimensional flower were prepared by a simple pyrolysis method on a precursor of bimetallic PdCo-MOF. PdCoO x showed excellent peroxidase mimic activity, which could significantly promote the oxidation of TMB by H 2 O 2 . Compared with CoO x , the peroxidase mimic activity of the optimized PdCoO x -300 increased by 2.41-fold. PdCoO x -300 has high affinity for TMB and H 2 O 2 with K m values of 0.16 mM and 2.11 mM, which are only 57.03% and 36.87% of HRP, respectively. The highly specific peroxidase mimic activity is conducive to the sensitive detection of H 2 O 2 , glucose and ascorbic acid with limit of detection of 10, 100 and 10 nM, respectively. Furthermore, the total antioxidant capacity in the actual beverage samples was conducted, which showed good anti-interference ability and recovery rate.
研究领域:
催化
·
纳米酶研究
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2023
·Vol. 50
·期 1
·107-125
·
IF 3.3
Huo Quan,Zhang Xiaolin,Fu Yanfei,Zhao Jiayao,Fu Lei,Miao Jiarun,Sun Haihui,Gao Jing,Liu Suyan
In this work, CuCo@C and CuCoS@C derived from an in-situ synthesis bi-metallic MOF HKUST-1/ZIF-67 (CuCo-MOF) were successfully fabricated by calcination and hydrothermal sulfide strategies. Morphology characterization results indicated that ZIF-67 grew uniformly on the surface of HKUST-1 to form CuCo-MOF. And, benefiting from bi-metallic MOFs precursors, the formed derivatives inherited and possessed good textural properties and dispersing well metal sites, which facilitated diffusions of molecules and enhancements of catalytic performances. In addition, carbon matrix produced in the materials further accelerated electron transporting properties, boosting HER and OER activities. Accordingly, in electrolytic water evaluations, CuCo@C and CuCoS@C showed good HER and OER performance, achieving 97 mV and 180 mV of overpotential at 10 mA cm −2 in an alkaline medium, respectively. Additionally, the catalysts exhibit long-term stabilities. Thus, this study provides a rational way for designing and constructing of high-efficient catalysts for H 2 and O 2 generations from electrolytic water processes.
研究领域:
材料科学
·
电化学
·
纳米催化
·
能源化学
·
功能材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）