PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2024
·
IF 6.9
Wenli Wu,Lei Feng,Wei Tan,Liqin Han,Qunfeng Yue,Feng Zhang,Xiaoqiang Liang
The rich activated protons and effective proton-conducting paths are of importance to improve conductivities of conductors. Herein, a series of Brönsted acids as proton carrier and proton transfer sites is introduced into the highly stable MOF , contributing to create plentiful hydrogen bonds within frameworks. Consequently, the trifluoromethanesulfonic acid-embedded JUC-1000 ([Cu 24 (BDPO) 12 (H 2 O) 12 ]) displays the relatively highest conductivity of 7.04 × 10 −4 S cm −1 under ∼98% RH and 328 K, ∼16 times that of JUC-1000 (4.47 × 10 −5 S cm −1 ). When TMSA@JUC-1000 (TMSA = CF 3 SO 3 H) blended with chitosan (CS), the proton conductivity of TMSA@JUC-1000/CS-15 is the highest at ∼76% RH and 328 K (1.01×10 −2 S cm −1 ), which is six times higher than that of JUC-1000/CS (1.85×10 −3 S cm −1 ). The CS contains abundant –NH 2 and –OH groups as proton jumping sites, which would activate the –NH– or –OH bonds of JUC-1000 and the acidic groups in Brönsted acids . These would result in an increased content of activated protons and effective formation of H-bonding nets by acid-base interactions. The findings provide valuable insights into the potential application of MOFs materials in energy devices.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Xiaoxin Chen,Haobo Ma,Xiaoyu Ji,Ruimeng Han,Kyongjin Pang,Zemin Yang,Zhimin Liu,Shan Peng
Microplastics (MPs) and pesticides are becoming an intractable environmental issue due to their wide spreading and non-degradable nature, posing serious threat to ecosystem and human health. To settle such dilemma, this work reasonably designed a superhydrophobic MOF-based coated sponge (ODSOSS/TiO 2 /Ni-MOF/PDA@Sponge) through the combination of an environmentally friendly in-situ supersaturated coprecipitation and polysesiloxane modification method. Among them, (I) the introduction of polydopamine (PDA) not only improves the adhesion between coatings and sponge, but also enhances the growth of MOF structure through complexation. (II) The obtained Ni-MOF shows large-area microscale anthemy structure with multilayered flaky texture, forming heterogeneously hierarchical structure with the deposited TiO 2 nanoparticles, which promotes photodegradation ability of TiO 2 owing to great specific surface area of Ni-MOF. (III) The high specific large area Ni-MOF supplies sufficient action sites for linkage of PDA and polysesiloxane molecules with unique nanocage-like structure, thus further greatly increasing adsorption force for various pollutants. (IV) The superhydrophobicity protect the porous channels of MOF from contamination of various absorbed pollutants, while TiO 2 nanoparticles effectively photodegrade the absorbed organic pollutants, endowing the sponge superior recyclability. The superhydrophobic sponge selectively rapidly and synchronously adsorbs various MPs (maintained almost 100% after 60 cycles) and pesticides (adsorption rates 71.6%–95.1%) from high-salinity water. The large-area sponge (9 cm × 6 cm × 1 cm) simultaneously removes almost 100% MPs (40 mg/L), Sudan Ⅲ (10 mg/L), kerosene (30 mL/L), and four pesticides (10 mg/L) within 1 min. Particularly, four pesticides are quickly photocatalytic degraded by the coated sponge. The free radical capture trials show that hydroxyl radicals (·OH) are the main active species of pesticide degradation. Furthermore, we reveal the negative centers where pesticide molecules are most vulnerable to ·OH attack, on basis of the charge distribution and molecular electrostatic potential (MEP) analysis. The adsorption mechanisms are carefully clarified through theoretical calculation and experimental data. This work not only provide an effective superhydrophobic candidate for MPs and pesticides removal in a broad applicable scope (especially in high-salinity wastewater), but also opens a new strategy for environmental remediation.
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
Molecular Catalysis
·
2025
·
IF 4.9
Can Sun,Runze Guo,Zhexiao Zhu,Shouxin Zhu,Jingyi Qu,Zijie Fang,Xiaolu Xu,Jiahui Lin,Yangben Chen,Shijie Zhang,Hui Zheng
Photocatalytic nitrogen fixation as a green, environmentally friendly, mild and low energy-consuming nitrogen fixation is considered as an ideal way to produce ammonia. Herein, inspired by nitrogen-fixing enzymes, the MOF materials Fe-sdc and Ti-sdc were synthesized by a simple solvothermal synthesis method using Fe and Ti as metal nodes and 4,4′-stilbenedicarboxylic acid (H 2 sdc) as a ligand. The ammonia production rates of Fe-sdc and Ti-sdc were 61.01 μmol g −1 h −1 and 46.84 μmol g −1 h −1 . The 15 N 2 isotope experiments were utilized to determine the nitrogen source for ammonia synthesis during the nitrogen fixation process of Fe-sdc. Various characterization analyses were also utilized to analyze the reasons for the better nitrogen fixation performance of the two catalysts.
研究领域:
材料科学
·
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2019
·
IF 3.372
Yuning Tang,Sa Wang,Xin Zhou,Ying Wu,Shikai Xian,Zhong Li
A facile and efficient room-temperature synthesis approach was proposed to prepare MOF material Cu(Qc) 2 (henceforth called RT-Cu(Qc) 2 ) with ultramicropores. RT-Cu(Qc) 2 was successfully synthesized at room-temperature by means of (Zn, Cu) hydroxyl double salt as intermediate within 1–12 h. The resulting RT-Cu(Qc) 2 exhibited excellent water vapor stability and its C 2 H 6 uptake reached 2.19 mmol/g at 288 K and 1 bar. Its C 2 H 6 /C 2 H 4 and C 2 H 6 /CH 4 uptake ratio at 298 K and 1 bar were up to 3.70 and 22.67, superior to benchmark MAF-49, Cu(Qc) 2 and ZIF-7. Its IAST-predicted C 2 H 6 /C 2 H 4 and C 2 H 6 /CH 4 selectivity reached 4.1 (1:1 v:v) and 35.9 (1:9 v:v) at 288 K and 1 bar, higher than most of ethane-capturing MOFs. Molecular simulation revealed well-defined host–guest match between Cu(Qc) 2 and ethane. Fixed bed experiments confirmed that ethane/ethylene or ethane/methane mixtures can be completely separated using RT-Cu(Qc) 2 . RT-Cu(Qc) 2 has great potential for separation of ethane/ethylene and the recovery of ethane from natural gas.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2017
·
IF 4.421
Yuanfeng Wu,Xianghai Song,Shuai Li,Jiahui Zhang,Xinghui Yang,Pengxin Shen,Lijing Gao,Ruiping Wei,Jin Zhang,Guomin Xiao
[(CH 3 ) 2 NH 2 ][M 3 (BTC)(HCOO) 4 (H 2 O)] . H 2 O (M–BTC, M = Mn, Ni, Co) were prepared under hydrothermal conditions and used as highly efficient catalysts for cycloaddition of CO 2 with epichlorohydrin (ECH). The microstructure and physicochemical properties of the compounds were determined by PXRD, FT-IR, XPS, N 2 -adsorption, TG–DSC, NH 3 –TPD and CO 2 –TPD. 98.01% conversion of ECH and 96.05% selectivity to chloropropene carbonate was obtained over the Mn–BTC under the optimized reaction conditions (105 °C, 3.0 MPa, 9 h, 1.5 wt.% of ECH). Besides, the recyclability result exhibited the Mn–BTC compound can be utilized as least three times with a slight reduction in its catalytic ability. In addition, cycloaddition of CO 2 with other epoxides and DFT calculation were also performed. The result exhibited the yield followed the order: ECH > 1, 2-epoxybutane > propene oxide > Allyl glycidyl ether, which was mainly determined by the energy of reaction.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2023
·
IF 4.6
Liqiang Ma,Pengpeng Wei,Jingfang Li,Xue Lu,Guangming Li
Aerobic oxidative desulfurization (AODS) is a promising deep desulfurization technique that can efficiently remove organosulfur compounds under mild conditions. In this study, a one-pot hydrothermal method was designed to encapsulate a quaternary heteropolyacid H 4 PVMo 4 W 7 O 40 (PVMo 4 W 7 ) into rht -MOF-1 { rht -MOF-1 = [Cu 6 O(TZI) 3 (H 2 O) 6 ] 4 ⋅nH 2 O}, and the single crystal structure of H 4 PVMo 4 W 7 O 40 @ rht -MOF-1 ( 1 ) indicated that PVMo 4 W 7 was effectively encapsulated within cage C of rht -MOF-1. Further, a similar one-pot hydrothermal reaction was employed to introduce acetic acid, resulting in the synthesis of defective H 4 PVMo 4 W 7 O 40 @ rht -MOF-1-De ( 1 - De ). 1 - De was characterized using various techniques such as FT-IR, XRD, TGA, XPS, and EPR. In comparison with 1, 1 - De exhibited numerous defect sites, high porosity, high surface area, high Mo 5+ ion content, well-dispersed PVMo 4 W 7 , and abundant oxygen vacancies, leading to efficient AODS capability. When applied as catalyst, 1 - De demonstrated high catalytic activity and good recyclability for the oxidation of dibenzothiophene (DBT) and 4,6-dimethyl dibenzothiophene (4,6-DMDBT) under air atmosphere. Strikingly, the removal rates of DBT and 4,6-DMDBT reached 99 % and 96 %, respectively under optimized conditions.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Carbon Energy
·
2025
·
IF 24.2
Ze Liu,Kaiyong Feng,Fengjun Deng,Xiaochen Zhang,Jiangchang Chen,Yingjian Yu
Silicon–air (Si–air) batteries have received significant attention owing to their high theoretical energy density and safety profile. However, the actual energy density of the Si–air battery remains significantly lower than the theoretical value, primarily due to corrosion issues and passivation. This study used various metal–organic framework (MOF) materials, such as MIL-53(Al), MIL-88(Fe), and MIL-101(Cr), to modify Si anodes. The MOFs were fabricated to have different morphologies, particle sizes, and pore sizes by altering their central metal nodes and ligands. This approach aimed to modulate the adsorption behavior of H 2 O, SiO 2 , and OH − , thereby mitigating corrosion and passivation reactions. Under a constant current of 150 μA, Si–air batteries with MIL-53(Al)@Si, MIL-88(Fe)@Si, and MIL-101(Cr)@Si as anodes demonstrated lifetimes of 293, 412, and 336 h, respectively, surpassing the 276 h observed with pristine silicon anodes. Among these composite anodes, MIL-88(Fe)@Si displayed the best performance due to its superior hydrophobicity and optimal pore size, which enhance OH − migration. This study offers a promising strategy for enhancing Si–air battery performance by developing an anodic protective layer with selective screening properties.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2022
·
IF 6.137
Yucheng Liu,Zhi Huang,Wei He,Mingyan Chen,Wenwen Tu,Meng Zhu,Dong Gan,Shumeng Liu
ABSTRACT In this work, bimetallic MIL53(Fe-Co) nanorod was modified by SiO 2 -COOH nanoparticles to obtain a novel MOF with low aggregation, and then intercalated into the reduced graphene oxide (RGO) layer crosslinked by polydopamine (PDA) to form a super-hydrophilic membrane with selective adsorption. The composite material was characterized by various analytical techniques. Owing to the low agglomeration of bimetallic MIL53(Fe-Co) and improved layer spacing of RGO , the stable composite membrane exhibited a water contact angle of approximate 0°, with the dye solution flux of 1721.46 L·m −2 ·h −1 ·bar −1 for methylene blue (MB) and 1834.88 L·m −2 ·h −1 ·bar −1 for malachite green (MG), the dye solution flux was increased by 31 and 33 times compared with M0, respectively. Meanwhile, the rejection rates of MB and MG were 99.46% and 99.4% with an excellent tolerance to a wide range of pH. Furthermore, the composite membrane shows a huge adsorption capacity in treating dye solution with high concentration and large volume for reusability due to the improvement of hydrophilicity. It also performed excellently in the field of separating oil/water emulsion with the flux of 539.79 L·m −2 ·h −1 ·bar −1 and rejection of 98.12%. In conclusion, the composite membrane with extraordinary hydrophilicity, strong adsorption capacity, and superior anti-fouling performance with low costs endows possibility of massive manufacture in commercial production for wastewater separation and purifications.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Haoran Liu,Rui Hou,Yilin Li,Junzhi Li,Guangshe Li,Zheng Lou,Dongdong Li,Wei Han
Antimony, as the anode of potassium ion batteries, has a satisfactory theoretical specific capacity (660 mAh g −1 ). However, the lattice expansion after potassization and insufficient conductivity of antimony hinder the practical application of Antimony based electrodes. A novel synthesis strategy for necklacelike biomass derived carbon fibers linked with MOF encapsulated Sb nanoparticles composite electrode is reported, wherein the unique structure of metal-organic frameworks (MOFs) is utilized to achieve nanoscale confinement and the inherent adsorption properties of fungi are exploited to construct conductive networks. The unique carbon encapsulation of MOF materials effectively controls the size of antimony particles and limits the expansion after potassization. The fixation of one-dimensional carbon fiber can prevent the powdering and shedding of the active materials and improve the cycle life of the composite electrodes. Electrochemical experiments and theoretical calculations show that NCFs@Sb@C anode has good conductivity and fast potassium ion diffusion kinetics. After 400 cycles at 1 A g −1 , NCFs@Sb@C still has a high reversible specific capacity of 129.3 mAh g −1 , which is significantly better than that of NCFs and Sb@C. In addition, the full cell of NCFs@Sb@C anode matched with PTCDA cathode exhibits good cycling stability, demonstrating the practical application potential of this composite electrode.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 12
·e70054
·
IF 3.2
Le Wang,Qiulan Li,Dezhi Yang,Yaling Yang,Yanqin Zhu,Qinhong Yin
In colorimetric analysis, nanozymes are invaluable tools due to their simple production, long-lasting stability, and adaptable enzymatic activity, which enable them to induce changes in substrate color. In this study, a simple nanozyme-based colorimetric sensor was developed to detect cannabidiol (CBD) by using the laccase activity of the self-made MOF with copper and cobalt loading (Cu/Co@MOF) nanozyme, which was synthesized using a one-pot microwave method. The Cu/Co@MOF has the ability to catalyze the coupling reaction between 4-AP and various phenolic substrates, thereby converting colorless phenolic substrates into red substances. Notably, 16 ng/mL was the limit of detection. Based on Y = 0.137X + 0.003 equation, absorbance and CAN concentrations (0.067 to 10 μg/mL with a correlation value [ R 2 ] of 0.993) had a significant correlation. The developed colorimetric method was subsequently employed to determine CBD in facial masks and essential oil samples, resulting in relative standard deviations (RSDs) ranging from 1.4% to 4.3%. Therefore, this sensitive, cost-effective, and rapid method ensures an effective determination of CBD in food and cosmetics.
研究领域:
分析化学
·
食品科学
·
化妆品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Mengying Xu,Xiaoquan Feng,Zhe liu,Xinwei Han,Junyong Zhu,Jing Wang,Bart Van der Bruggen,Yatao Zhang
Rational material design and controllable membrane preparation technology is essential to improve the separation performance and anti-fouling ability of a membrane. In this study, melamine is selected as the aqueous phase monomer of the interfacial polymerization and photocatalytic Zn-TCPP laminates are embedded into the membrane to develop a high performance self-cleaning loose TFN membrane. The melamine/TMC TFC membrane with a woven-like loose polyamide layer exhibits water permeance up to 30.1 L m -2 h −1 bar −1 and a good dye rejection (≥97%). With the addition of Zn-TCPP laminates, the membrane permeance is enhanced to 63.2 L m -2 h −1 bar −1 (TFN-2), which is twice than the TFC membrane. Furthermore, the dye rejection of TFN-2 remains high, and the rejection of salts (NaCl, Na 2 SO 4 ) is below 10%. Besides, the Zn-TCPP embedded TFN membrane can fully degrade the attached dye within 15 min under visible light, and the permeance of the treated membrane can be restored to its original state. The resultant Zn-TCPP/TFN loose nanofiltration membranes with excellent self-cleaning ability can not only provide a potential solution for the removal of organic pollutants, but also offer new inspiration for fabricating high performance self-cleaning loose nanofiltration membranes through a mature and facile interfacial polymerization method.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yi Yu,Yu Cheng,Lei Tan,Xiangmei Liu,Zhaoyang Li,Yufeng Zheng,Tao Wu,Yanqin Liang,Zhenduo Cui,Shengli Zhu,Shuilin Wu
Periodontitis is a chronic inflammatory disease caused by the bacteria infection in dental plaque, which can lead to gingival recession and tooth loss, seriously endangering human oral health. Current treatments through the combination of mechanical debridement and antibiotics therapy still have the problems of gingival trauma, low treatment efficiency, long treatment cycle and bacterial resistance. Herein, we prepare an injectable ointment based on MOF-based single-atom catalysis systems with good biocompatibility and high anti-biofilm activity, which consists of PEG-400/PEG-4000 and Pt single-atom doped porphyrin metal−organic framework (PCN-222-Pt). Through theoretical screening, we find that all the metal single atoms (Pt, Au, Cu, Ru) can improve the oxidase-like activity of PCN-222, which reduce the adsorption and activation energy of O 2 . Among them, PCN-222-Pt shows strong oxidase-like and peroxidase-like activities and can produce reactive oxygen species spontaneously, which shows an excellent anti-biofilm performance (98.69% against S. aureus biofilm, 99.91% against E. coli biofilm) in vitro within 1 h. In the treatment of biofilm-induced periodontitis, the injectable PCN-222-Pt ointment showed alleviative inflammation response, reduced bone destruction and healthier gum tissue, which is superior to the clinical used Periocline. This work provides a rapid, effective, non-invasive and convenient strategy for the treatment of periodontitis without antibiotics.
研究领域:
口腔医学
·
材料科学
·
微生物学
✓ 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）