JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Xuanting He,Jihan Lu,Jiaxiang Liu,Zixuan Wu,Boyu Li,Zhong Chen,Wenquan Tao,Zhuo Li
Effectively addressing crude oil spills remains a global challenge due to its high viscosity and limited flow characteristics. In this study, we successfully prepared a modified sponge (PCP@MS) by embedding the photothermal material of Co-HHTP and coating the melamine sponge (MS) with low-surface-energy polydimethylsiloxane (PDMS). The PCP@MS exhibited outstanding hydrophobicity with WCA of 160.2° and high oil absorption capacity of 59–107 g/g. The PCP@MS showed high separation efficiency of 99.2% for various oil-water mixtures, along with notable self-cleaning properties and mechanical stability. The internal micro-nano hierarchical structure on the sponge surface significantly enhanced light absorption, synergizing with the photo-thermal conversion properties of Co-HHTP, enabled PCP@MS to achieve a surface temperature of 109.2 °C under 1.0 solar light within 300 s. With the aid of solar radiation, PCP@MS is able to heat up quickly and successfully lowering the viscosity of the surrounding crude oil, resulting in an oil recovery rate of 8.76 g/min. Density functional theory (DFT) calculation results revealed that Co-HHTP featured a zero-gap band structure, rendering advantageous electronic properties for full-wavelength light absorption. This in situ solar-heated absorbent design is poised to advance the practical application of viscous oil spill cleanup and recovery.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 11
·1-10
·
IF 5.3
Yang Shuning,Tian Li,Feng Yongbo,Song Yujia,Li Ruidan,Guo Yanjia,Li Huiling,Li Chao,Lu Juan
A highly sensitive molecularly imprinted electrochemiluminescence (MIECL) sensor was developed for detecting rifampicin (RIF) based on luminol@Co-MOF. Co-MOF had a significant enhancement of ECL signaling in the luminol-O 2 system. Molecular imprinted polymers (MIPs) with the introduction of RIF provide new properties for the specific recognition of RIF. A noteworthy decrease in ECL intensity was observed with higher concentrations of RIF. Consequently, the ECL signal was controlled by RIF elution from and adsorption by the MIP, thus establishing a new method for RIF detection. Under optimal conditions, this sensor exhibited linear detection ranges of RIF between 1.0 × 10 −11 mol L −1 and 1.0 × 10 −6 mol L −1 , with a detection limit of 3.3 × 10 −12 mol L −1 ( S / N = 3). The recoveries ranged between 98.1 and 106.0% in fish samples. This method can be used as a sensitive and rapid method to detect RIF in real samples. Graphical
研究领域:
分析化学
·
药物检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Junjie Si,Shuai Zhang,Xiuming Liu,Kuanjun Fang
Reactive dyes are widely used in textile industry, but their excessive use has caused several water pollution problems. In order to reasonably treat printing and dyeing wastewater, the highly efficient adsorbent for reactive dyes employed in this study is a new type metal–organic framework (MOF) material. Ni/Co MOF (NCM) was synthesized using the solvothermal method; then, the materials were analyzed by a series of characterization methods. This study mainly investigated the adsorption properties of NCM toward reactive dyes, and the adsorption capacities of NCM toward reactive red 218 were up to 200 mg·g–1. The results were found to conform to the Langmuir isotherm model, and the pseudo-second-order kinetic model by performing kinetic and isotherm studies on the adsorption process of reactive red 218 on NCM. The results of the intraparticle diffusion model suggest that the binding of reactive red 218 to NCM was mainly divided into three steps: adsorption, diffusion, and saturation. Moreover, it was concluded by thermodynamic fitting of the adsorption process that the adsorption of reactive red 218 by NCM proceeded spontaneously and was accompanied by an endothermic reaction, in which the adsorption of both occurred mainly by electrostatic attraction. The NCM has good reusability and still has good adsorption performance after being reused 5 times. Therefore, NCM is a very promising and excellent adsorbent for the treatment of dye wastewater because of its high efficiency and reusability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Rui Gou,Yong Li,Qilong Chen,Sha Wang,Dan Sun,Changhua Li,Xianmin Gong,Yi He
Metal corrosion causes a lot of waste of resources, and the protection of metals from corrosion is becoming increasingly important. In this study, zeolite-imidazole (ZIF-67) was grown on the surface of Co-MOF for the first time by a one-step (complexation) method. 2-Mercaptobenzimidazole (MBI) was then loaded into the inner cavity of ZIF-67, resulting in the formation of a new composite material, Co-MOF@ZIF-67@MBI. The modified Co-MOF exhibits excellent interfacial compatibility with the water-based epoxy resin, and the Co-MOF@ZIF-67@MBI composite coating demonstrates robust anti-corrosion properties. Following a 60-day immersion period, the electrochemical experiment demonstrated that the corrosion resistance modulus of the Co-MOF@ZIF-67@MBI composite coating reached 10 8 Ω cm², indicating that the coating effectively enhanced the corrosion resistance of the coating and significantly extended the service life of the coating.
研究领域:
材料科学
·
腐蚀与防护
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2019
·
IF 2.584
Bo Lin,Aiyong Wang,Yanglong Guo,Yuanqing Ding,Yun Guo,Li Wang,Wangcheng Zhan,Feng Gao
Co-, Ni-, and Zn-containing MOFs are prepared and then pyrolyzed to generate materials for ambient temperature NO adsorption. Materials containing Co are much more efficient for NO adsorption than those containing Ni and Zn; therefore, Co is identified as the active phase. The best performing material studied here achieves 100% low concentration (10 ppm) NO adsorption for more than 15 h under a weight hourly space velocity of 120 000 mL g–1 h–1. Powder X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared, and Raman spectroscopies, along with scanning electron microscopy and TEM, are used to probe the physicochemical properties of the materials, particularly the Co active phase, and chemistries involved in NO adsorption–desorption. NO adsorbs on oxygen-covered Co nanoparticle surfaces in the form of nitrates and desorbs as NO at higher temperatures as a result of surface nitrate decomposition. NO storage capacity decreases gradually upon repeated NO adsorption–desorption cycles, likely because of Co3O4 formation during these processes.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Xuehua Chen,Chao Qin,Zicheng Zheng,Hanwen Chi,Zhizhen Ye,Liping Zhu
Gas sensors with good repeatability and controllable fabrication method are extremely desired for practical applications. Co-MOF-derived Co 3 O 4 is a promising gas-sensing material candidate because of its large surface area, ultrahigh porosities, and abundant oxygen defects. However, the advantages of Co-MOF precursor were limited by the traditional sensor fabrication methods. Moreover, the high resistance and poor surface activity of Co 3 O 4 resulted in low gas-sensing performance at room temperature (RT). To overcome these challenges, in-situ sensors based on Co 3 O 4 porous films with controlled nanoscale thickness were directly prepared on ceramic substrates by using Co-MOF films as precursors. To further improve the conductivity, SnO 2 catalytic overlayers were introduced on top of Co 3 O 4 sensors to construct SnO 2 /Co 3 O 4 bilayer sensors, which were promising for triethylamine (TEA) detection at RT. As a result, the optimized SnO 2 /Co 3 O 4 sensor exhibited a fast response/recovery rate (11 s/16 s), high selectivity, and a satisfactory sensitivity (150%) to TEA at RT. The enhanced gas-sensing performance could be attributed to the unique bilayer structures, improved conductivity, and synergistic effects of the SnO 2 catalytic overlayers and Co 3 O 4 sensing layers.
研究领域:
材料科学
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化学传感器
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Russian Journal of Physical Chemistry A
·
2022
·Vol. 96
·期 9
·1925-1934
·
IF 0.791
Zhang Haifu,Lu Xinhuan,Li Xixi,Wang Beibei,Dong Yanhong,Zhou Dan,Xia Qinghua
Abstract The epoxy compounds are useful intermediates and precursors in the production of fine chemicals and drugs. In the epoxidation reaction system, Co-MOF, a kind of cobalt-based heterogeneous catalytic material, has been widely studied for its simple synthesis, stable structure and excellent ability of molecular oxygen activation. For the first time, we used potassium persulfate as the initiator for the efficient air epoxidation reaction catalyzed by Co-MOF materials, which had better catalytic effects than aldehydes or peroxy compounds. As a new initiator, potassium persulfate reduces the reaction temperature and increased the amount of substrate olefins. In addition, potassium persulfate reduced the activation energy of the reaction, so that the ratio of olefin to initiator was further reduced, showing a better efficiency than initiators of aldehydes or peroxy compounds. Moreover, the application of potassium persulfate to the epoxidation reaction of other catalysts has also achieved good results.
研究领域:
化学工程
·
催化
·
有机化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Guiquan Liu,Shiyu Li,Rumisa Baikeri,Guorong Wang,Zhiliang Jin
Metal-organic skeleton (MOF) with adjustable pore skeleton and finely reaction sites has been widely accepted in the application of high-performance supercapacitors. Here, the Se-Co-MOF-1 nano-particles obtained by modified doped Se element to Co-MOF and the CoV 3 -MOF nano-sheets obtained by in-situ doped V element in Co-MOF. As a result, Se-Co-MOF-1 and CoV 3 -MOF electrode materials have more electrochemical reactivity, better conductivity and better stability. At a certain current density, Se-Co-MOF-1 and CoV 3 -MOF electrode materials have better mass-specific capacitance and better rate performance than Co-MOF. Furthermore, the Se-Co-MOF-1//AC ASC and CoV 3 -MOF//AC ASC are also assembled, which show relatively excellent power density and energy density compared to similar work reported. The Se-Co-MOF-1//AC ASC and CoV 3 -MOF//AC ASC after 10,000 cycles, their mass-specific capacitance retention rate are still 70.00 %, which further shows the reliable stability of Se-Co-MOF-1 and CoV 3 -MOF electrode materials. This result proves that the synthetic schemes of MOF nano-sheets/nano-particles can be selected as the source of the strategy for preparing excellent electrode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 42
·15447-15455
·
IF 4
Xianliang Li,Diwei Deng,Lufang He,Yan Xu
Exploration of credible non-enzymatic glucose sensors with high selectivity and sensitivity is of great significance for early clinical monitoring of glucose concentration and preventing the threat of diabetes to human health. Here, mesoporous carbon (MC) sphere immobilized Co-MOF-74 nanorods (NRs), denoted as Co-MOF-74 NRs/MC, were successfully prepared, in which the nanostructural porous carbon sphere was obtained using cobalt glycolate as the built-in template followed by a subsequent carbonization and acid treatment, and the MC spheres were then in situ deposited on the surface of Co-MOF-74 NRs via a solvothermal method. Benefiting from the good conductivity of the grafted porous carbon spheres and the abundant active sites, as well as the permeability of microporous MOF-74 nanocrystals, the Co-MOF-74 NRs/MC modified glassy carbon electrode (GCE) exhibited effective non-enzymatic glucose sensing performance with a fast response time (less than 3 s) and a glucose sensitivity of 98.0 μA cm−2 mM−1. Furthermore, the Co-MOF-74 NRs/MC/GCE showed a favourable anti-interference capability in the presence of various interferents and good long-term reusability. The applicability of Co-MOF-74 NRs/MC/GCE for glucose sensing in real serum samples was also investigated, verifying the applicability of the electrode for targeted glucose monitoring in practical applications.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2022
·
IF 4.778
Haotian Guo,Xinhuan Lu,Jie He,Huaxin Zhang,Haifu Zhang,Yanhong Dong,Dan Zhou,Qinghua Xia
A composite material ZSM-5@Co-MOF containing Co-MOF and ZSM-5 was successfully prepared by steam-assisted crystallization of Co-MOF on the zeolite surface. Compared to physically mixing Co-MOF on the zeolite surfaces, Co-MOF nanosheets were uniformly attached to external surfaces of the ZSM-5 crystals because of the enhanced interaction between zeolite and Co-MOF in the composite. In addition, the Co-MOF was distributed as a nanosheet structure, and its dispersibility was greatly enhanced, in which this behavior led to more uniform distribution of the deposited active sites. Interestingly, the designed composite exhibited an excellent catalytic performance for the epoxidation of α-pinene with air. Compared to isolated Co-MOF and ZSM-5, high yield of the product (94.4%) was obtained over the 0.5ZSM-5@Co-MOF-150 composite due to the highly dispersed Co-MOF nanosheet. This opens up interesting prospects for developing new zeolite@MOF composite catalysts as efficient heterogeneous catalysts.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2022
·
IF 5.204
Congling Shi,Mei Wan,Zhengbo Hou,Xiaodong Qian,Honglei Che,Yueping Qin,Jingyun Jing,Jian Li,Fei Ren,Bin Yu,Ningning Hong
Thermoplastic polyurethane (TPU) is the most used polyurethane, but its highly flammable characteristic restricts its extensive use. In this work, Co-MOF@MXene hybrids flame retardants were synthesized and incorporated into TPU . The flame-retardant characteristics of TPU composites were investigated by cone calorimeter test and thermogravimetric analyzer. Compared with TPU, the peak heat release rate and total heat release rate of TPU/Co-MOF@MXene composites were reduced by 28.3% and 14.5%, respectively; and the smoke production rate and total smoke production of the composites with only 2 wt% Co-MOF@MXene hybrids were also reduced by 58.8% and 47.5%, respectively. Furthermore, the char residues of TPU/Co-MOF@MXene composites were about 2 times that of pure TPU. Systematical characterizations were then carried out to investigate the flame retardant mechanism of Co-MOF@MXene hybrids, highlighting the barrier effects of MXene combined with the catalytic effect of Ti and Co. The hybrids flame retardants greatly benefit the further development of TPU nanocomposites.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Chen Hou,Linhui Fu,Yang Wang,Wenqiang Chen,Fang Chen,Sufeng Zhang,Jianzhi Wang
Smart nanomaterials that can simultaneously detect and eliminate contaminants in water environment are significant for health protection. To achieve such goal, Co-MOF-74 was in-situ assembled on regenerated cellulose membranes followed by calcination process, thus achieving dual-functional Co 3 O 4 /cellulose derivative membrane (Co 3 O 4 /CDM) catalyst. The Co 3 O 4 morphology was readily controlled by further recrystallization of the deposited MOF precursor. Combining the high enrichment ability of cellulose membrane and outstanding peroxidase-active of Co 3 O 4 , the fast color reaction for phenol was accomplished within 10 min by Co 3 O 4 /CDM with the assistance of H 2 O 2 and 4-aminoantipyrine (4-AAP). Moreover, the Co 3 O 4 /CDM also portrayed an excellent degradation property for phenol elimination via sulfate radical-advanced oxidation processes (SR-AOPs). The degradation efficiency of phenol reached 93% in 20 min, and the possible mineralization mechanism was proposed based on the XPS and LC-MS analysis. Thus, Co-MOF-74 derived Co 3 O 4 /CDM shows excellent properties in aiding the colorimetric detection and degradation of phenol in aqueous solutions.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）