APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Muhammad Sabir,Mahmoud Sayed,Zhuofan Zeng,Bei Cheng,Wang Wang,Chuanbin Wang,Jingsan Xu,Shaowen Cao
The photocatalytic conversion of carbon dioxide (CO 2 ) into valuable products holds great promise from environmental and economic perspectives. However, current photocatalytic materials still exhibit unsatisfactory efficiency. In this study, a notably efficient step-scheme (S-scheme) heterojunction was developed by combining the Co-MOFs with carbon nitride nanosheets (g-C 3 N 4 ). The electrostatic interaction between these components not only facilitates the exfoliation of g-C 3 N 4 layers but also enhances the stability of the photocatalyst structure. The optimal heterojunction Co-CN4 photocatalyst achieved a significantly enhanced CO production rate of 16.1 µmol g −1 h −1 , which is 4.7 times higher than that of pure g-C 3 N 4 . This improved activity is ascribed to the enhanced light absorption and mitigated charge carrier recombination. Density functional theory (DFT) computations in conjunction with experimental observations elucidate the establishment of a close contact interface. Additionally, electron paramagnetic resonance (EPR) and in situ X-ray photoelectron spectroscopy (XPS) characterization unveil the electron transfer pathway of Co-CN4 during photocatalytic CO 2 conversion. This study offers valuable insights into the design of S-scheme photocatalysts for enhancement of CO 2 photoreduction.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2023
·
IF 8.4
Yue Wang,Hongguo Zhai,Qi Guo,Yuhao Zhang,Xia Sun,Yemin Guo,Qingqing Yang,Yanyan Zhang
Heavy metals and foodborne pathogens have become key pollutants that harm aquatic products, seriously endangering food safety and human health. Therefore, in this study, a ratiometric electrochemical aptamer sensor with a novel signal amplification strategy was constructed using ZrO 2 as the substrate and Ni/Co-MOFs@AuNPs cubic nanomaterials to increase the specific surface area to simultaneously detect Cd 2+ and S.aureus. The shared hairpin complementary chains modified with ferropene (Fc) could simultaneously bind to the Cd 2+ and S.aureus aptamers modified with methylene blue (MB) and anthrquinone-2-carboxylic acid (AQ). The ratios of MB and AQ to Fc were used to realize the qualitative and quantitative detection of Cd 2+ and S.aureus. Under the optimal conditions, the electrochemical aptamer sensor for Cd 2+ and S.aureus was in the range of 1.00 × 10 −2 -1.00 × 10 4 ng/L and 1.00 × 10 1 -1.00 × 10 7 CFU/mL, and the lowest detection limit was 1.91 × 10 −4 ng/L and 1.37 CFU/mL, respectively. The aptasensor constructed in this paper can realize the simultaneous detection of Cd 2+ and S.aureus in scallop and fish, providing a new detection method for the simultaneous detection of a variety of aquatic products pollutants.
研究领域:
分析化学
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环境科学
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食品科学
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产品关联
DOI
高影响因子
ANALYST
·
2018
·Vol. 144
·期 2
·649-655
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IF 3.864
Siyuan Li,Song Yue,Chao Yu,Yiyu Chen,Dong Yuan,Qiubo Yu
In this study, a new, simple, and label-free electrochemical immunosensor was presented for the detection of nuclear matrix protein-22 (NMP-22). In order to accurately monitor very small amounts of NMP-22, it was advantageous to use highly efficient nanomaterials as signals. For this reason, we synthesized a chrysanthemum-like nanocomposite (Co-MOFs/CuAu NWs), using Co-based metal–organic frameworks (Co-MOFs) as carriers and copper gold nanowires (CuAu NWs) wrapped around their surface, which was applied for modifying a glassy carbon electrode (GCE). The Co-MOFs/CuAu NWs possessed outstanding catalytic capabilities, which served as signal materials and simultaneously carried the anti-NMP-22 antibody (Ab). When different concentrations of the NMP-22 antigen (Ag) were specifically attached to the immunosensor, the current responses decreased by varying degrees. The designed biosensor used the principle to establish a linear regression equation and achieve an accurate quantification of NMP-22. After optimization, the NMP-22 sensor exhibited a good linear response over a concentration range from 0.1 pg mL−1 to 1 ng mL−1, with a lower detection limit of 33 fg mL−1 (based on S/N = 3). The proposed biosensor demonstrated the advantages of ultra-sensitivity, high specificity and acceptable reproducibility, suggesting that the proposed strategy has the potential for the quantification of NMP-22 in human urine samples. Moreover, the novel nanocomposite Co-MOFs/CuAu NWs are promising materials for electrochemical sensors to detect other biomolecules.
研究领域:
生物化学
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分析化学
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纳米技术
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生物传感器
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2022
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IF 9.231
Yan Guan,Peng-Bin Si,Tong Yang,Yuan Wu,Yun-Hui Yang,Rong Hu
Ochratoxin A (OTA) is a naturally occurring mycotoxin that poses serious threats, such as kidney damage, to human health. Therefore, we developed a DNA walker-based dual-signal electrochemical ratiometric platform for OTA detection, which could overlook the variations in environmental and instrumental factors and DNA load densities. Cobalt metal–organic frameworks (Co-MOFs) and toluidine blue were used as the electrochemical signal tag and internal reference probe, respectively. In the presence of OTA, this developed machine resulted in the DNA labelled-Co-MOFs far away from the electrode. Thus, Co-MOFs signal at −1.18 V decreased, while toluidine blue at −0.28 V increased. This proposed strategy has displayed superior sensitivity (limit of detection = 0.31 fg/mL, linear range = 1–50 ng/mL) and high reproducibility. The sensor was also applied for determining OTA content in red wine samples and the results were comparable to those of commercial enzyme-linked immunoassay kits with satisfactory results.
研究领域:
分析化学
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食品科学
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毒理学
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产品关联
DOI
PubMed
高影响因子
Green Processing and Synthesis
·
2025
·Vol. 14
·期 1
·
IF 3
Fuhua Wei,Yan Wang,Qinhui Ren,Qin Zhang,Hongliang Chen,Zhao Liang
Cr/Co-MOFs were synthesized via a solvothermal method using chromium acetate and cobalt chloride hexahydrate as metal ions, and trimeric acid as the organic ligand. The structures of Cr/Co-MOFs were characterized using Fourier infrared spectroscopy, X-ray diffraction, and scanning electron microscopy techniques. These Cr/Co-MOFs were used for removing organic contaminants in wastewater treatment. Fleroxacin and Rhodamine B (RhB) were specifically selected as target molecules in this study to evaluate the removal efficiency based on the mass of Co/Cr-MOFs, concentrations of organic contaminants, and adsorption time. Experimental findings indicated that at a Co/Cr-MOFs dosage of 100 mg, with initial concentrations of Fleroxacin (30 ppm) and RhB (20 ppm), removal efficiencies achieved were 95% and 99%, respectively. Within a timeframe of 5 h, Co/Cr-MOFs attained adsorption capacities amounting to 269.6 mg·g −1 for fleroxacin and 289.5 mg·g −1 for RhB. The interaction between Co/Cr-MOFs and fleroxacin, as well as RhB, is primarily attributed to factors such as pore size, hydrogen bonding, electrostatic charge, and π–π interactions. Moreover, theoretical analysis corroborated these experimental results by demonstrating conformity between the adsorption process and both second-order kinetic model equations alongside Langmuir isotherm model equations. Collectively, the experimental data combined with theoretical investigations underscore the practical significance associated with employing Co/Cr-MOFs for effective eradication of organic pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2023
·Vol. 37
·期 9
·e7212
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IF 3.9
Fuhua Wei,Meng Nie,Qinhui Ren,Xiang Yu,Hua Li,Hongliang Chen,Mengting He,Zhao Liang,Siyuan Wang,Dongxue Han
This work studies the use of Cu/Co-MOFs for the removal of doxycycline hydrochloride (DOC) in wastewater. Cu/Co-MOFs were prepared using a solvothermal method and characterized by XRD, SEM, and TG. According to the experimental results, the maximum DOC adsorption capacity of Cu/Co-MOFs within 5 h was 268.5 mg/g. The pseudo-second-order (PSO) kinetic model shows that the R 2 are all greater than 0.99, which proves that the theory DOC adsorption by Cu/Co-MOFs is consistent with practice. According to the Freundlich isotherm model, the adsorption of DOC by Cu/Co-MOFs is a multilayer adsorption. Thus, the results show that Cu/Co-MOFs have practical application value in removing DOC.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Molecular Catalysis
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2021
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IF 5.062
Ruixue Wu,Caifeng Bi,Xia Zhang,Jinmiao Wang,Lulu Wang,Chuanbin Fan,Mei Wang,Feng Shao,Nana Li,Ziao Zong,Yuhua Fan
Two novel Co-MOFs constructed from aromatic polycarboxylic acid named {[Co(tib) 2 (bimb) 2 ]·4H 2 O} n (tib = 3-((4-(1H-1,2,4-triazol-1-yl)benzyl)oxy)benzoic acid, bimb = 1,4-bis(imidazole-1-ylmethy) benzene) and {[Co 2 (bipa) 4 (bibp) 6 ]} n (bipa = 2-(4-carboxy-2-nitrophenoxy)-6-nitroterephthalic acid, bibp = 4,4′-bis(imidazolyl) biphenyl), have been synthesized under solvothermal conditions and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectra, powder X-ray diffraction (PXRD), thermogravimetric analysis (TG) as well as electrochemistry. The single-crystal X-ray diffraction analysis indicates that Co-MOF 1 exhibits an uninodal net with a (6 5 ·8) topology, whereas Co-MOF 2 exhibits an uninodal 4-connected framework with a (4 4 ·6 2 ) topology. The electrochemistry studies demonstrate that both of the two Co-MOFs can behave as the efficient electrocatalysts for water oxidation in a mild neutral system at the potential around 1.20 V vs. NHE with comparatively low overpotential ( η ) for Co-MOF 1 and 2 of 337–541 mV vs. NHE. Moreover, the two Co-MOFs also show good photocatalytic degradation capabilities toward MB/MV dyes under UV irradiation, and the mechanism studies demonstrate that the main active species are · OH radicals. Therefore, these bi-functional Co-MOFs materials can be treated as convenient and efficient catalysts for the oxygen evolution reaction and aromatic dyes degradation.
研究领域:
材料科学
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电化学
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环境化学
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
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IF 5.3
Yaohua Gu,Jiping Han,Ni Zhang,Weisong Yan,Yue Guo,Huiyi Tan,Changyi Yang,Fuke Wang,Huiqin Yao
Nanozyme possess the advantages of high enzyme simulation activity, low cost, and excellent stability. As a substitute for natural enzymes, nanozyme have demonstrated significant potential in various fields. In this study, a bimetallic organometallic framework Cu@Co-MOFs was synthesized via the hydrothermal method using terephthalic acid (H2BDC) as a ligand and characterized. Cu@Co-MOFs exhibits outstanding peroxidase activity (POD) by catalyzing the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) and other color-developing substrates through •OH formation. A simple, rapid, and reliable colorimetric method for quantitatively detecting glutathione (GSH) was developed based on the Pod-like activity of Cu@Co-MOFs. The linear range of this method was 1–1200 μM with a detection limit of 0.72 μM. This work not only proposes a bimetallic organic framework with high POD as a straightforward and practical platform for visually detecting GSH but also provides a strategy to enhance the performance of nanomaterials.
研究领域:
生物化学
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材料科学
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分析化学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Ping Wang,Qiulian Chen,Chengxin Xiang,Guonian Zhu,Yue Luo,Kerage Dorothy Mokeira,Yong Chen,Jialun Wu,Xiaoling Hou,Shuxia Xu
Tetrachlorobenzoquinone (TCBQ) as one of the most toxic quinones has potential risk of causing canceration, and the monitoring of TCBQ in the environment is of significant importance. In this study, a flowerlike Co-PTA-400(Ar) metal organic frameworks (MOF) catalyzed TCBQ-H 2 O 2 chemiluminescence (CL) system was established for sensitive determination of trace TCBQ in environmental waters. The reaction between TCBQ and H 2 O 2 can result in weak CL emission, and the CL signal was enhanced about 10-fold using flowerlike Co-PTA-400(Ar) as catalyst. The luminescence mechanism was investigated through kinetic studies and free radical scavenging experiments. The strong CL emission of TCBQ mainly relied on the generation of abundant •OH by the catalysis of Co-PTA-400(Ar). This strategy allows to develop a highly sensitive method for the determination of TCBQ in the linear range of 1 ∼ 50 μM, with a detection limit of 0.56 μM (3 σ ). The proposed method was applied for analysis of three spiked water samples with recoveries ranging from 95.7% to 100.5%. This method offering the advantages of rapid analysis, low costs, and high sensitivity, is appealing for detection of TCBQ in environmental waters.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Shuhong Huang,Yan Wang,Shuying Qiu,Jinquan Wan,Yongwen Ma,Zhicheng Yan,Quanmo Xie
Since high degradation efficiency and environmental friendliness, the Electro-Fenton technology has been widely applied to remove antibiotics in wastewater. In-situ loading of electrochemically active metals on graphite felt (GF) is considered as a promising strategy for improving its electrocatalytic activity and reusability. Here, a series of Mn/Co MOFs derivatives modified graphite felt cathodes (Mn x Co 3-x @C-GF) were fabricated without any binder, which was used for the treatment of ciprofloxacin (CIP). The morphology, pore structure and electrochemical activity of Mn x Co 3-x @C-GF changed by adjusting the ratio of Mn/Co in the MOF-74 precursor. Owning to the optimized Mn/Co ratio, Mn 2 Co 1 @C-GF exhibited the most excellent catalytic ability with hierarchical porous structure and faster electron transfer . The results showed that the CIP degradation efficiency could reach 99.8% in 60 min. Mn 2+/3+/4+ and Co 3+/2+ enhanced the generation of active radicals (·OH) by Fenton-like reaction and further improved degradation performance. In addition, the cathode had maintained good stability during four cycles. This work provides an alternative strategy for fabricating efficient self-supporting cathode materials in the future.
研究领域:
环境科学
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化学工程
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材料科学
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水处理
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DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2022
·Vol. 36
·期 6
·e6648
·
IF 4.072
Zehao Yu,Zijie Song,Chunshan Lu,Ying Bai,Jiayun Li,Jun Liu,Peng Liu,Jiajian Peng
Hydrosilylation employing metal–organic frameworks (MOFs) as the catalyst are promising because of their high catalytic reactivity and sustainability of heterogeneous catalyst. A highly simple and efficient method for the hydrosilylation of olefins catalyzed by an air-stable MOF-cobalt catalysts is developed. This approach is featured by 0.1% of Co-MOFs catalyst with excellent reactivity, recyclability, and good functional group tolerance. The Co-MOFs can catalyze hydrosilylation of styrene or its derivatives with Ph 2 SiH 2 in the presence of NaBHEt 3 . Moreover, the catalysts we developed show excellent stability, and the activity is not significantly reduced after repeating the cycle for five times.
研究领域:
化学
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材料科学
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催化反应
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
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IF 9.224
Chuan Fan,Lirong Wang,Yong Luo,Yongchao Song,Tailin Xu,Xueji Zhang
Metal–organic frameworks (MOFs) have recently been widely used in antimicrobial fields due to their adjustable composition and morphology. The inherent properties of MOFs (e.g., their shape, size, and metal element) are highly related to their antibacterial performance. The traditional beaker-based synthesis system to evaluate antibacterial properties of MOFs often leads to high reagent costs and environmental pollution. Here, a low-cost droplet-based microscale synthesis platform for better and economical screening of antimicrobial performance of MOFs is demonstrated. Multiple MOFs (Zn-, Co-, and Cu-MOFs) with controlled morphologies are successfully one-click fabricated through such a droplet-based synthesis platform. Further antimicrobial performance screening (Staphylococcus aureus and Escherichia coli) of the above MOFs indicates that the Co-MOFs show better antibacterial effects than Zn-MOFs and Cu-MOFs. Such integration of droplet array synthesis and screening can greatly reduce the cost and time, especially for parallel experiments, and provide great potential in guiding the large-scale synthesis of high-performance materials.
研究领域:
材料科学
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化学
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生物技术
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微生物学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）