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A Multifunctional {P_(2)Mo_(5)}-based Hybrid Applying to Catalysis, Electrocatalysis and dye adsorption

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Chemical Research in Chinese Universities 2022年第6期38卷 1553-1560页

作者： LIU Xiaodong WANG Xiangchen XU Na ZHANG Zhong LI Xiaohui LIU Guocheng WANG Xiuli Liaoning Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell College of Chemistry and Materials EngineeringBohai UniversityJinzhou121013P.R.China

As a common environmental pollutant, thioether can cause serious environmental pollution, so selective oxidation of thioether has become one of the current research hotspots. In this paper, an inorganic-organic hybrid based on a Standberg-type polyoxometalate, [Hbiz]_(5)[HP_(2)Mo_(5)O_(23)]·5H_(2)O(1)(biz=benzimidazole), was obtained by adjusting pH under hydrothermal conditions. The structure was characterized by infrared spectroscopy, thermogravimetric analysis, and single-crystal X-ray diffraction. Compound 1 can be used as an excellent catalyst for the oxidation of thioanisole. The experimental results showed that thioanisole could be catalytically oxidized to methyl phenyl sulfoxide by compound 1 as a catalyst within 40 min. The conversion rate and selectivity reached 99%. Compound 1 had good cycling stability as a heterogeneous catalyst. In addition, the electrocatalytic reduction of H_(2)O_(2) and Cr_(2)O_(7)^(2−) for hybrid 1 was preliminarily investigated. In addition, the adsorption performance of hybrid 1 on cationic dye crystal violet and methylene blue was tested, and the adsorption efficiencies can reach 98.5% and 86.3%, respectively.

关键词： Polyoxometalate Catalysis Electrocatalysis dye adsorption

Rapid formation of metal-monophenolic networks on polymer membranes for oil/water separation and dye adsorption

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Chinese Chemical Letters 2021年第12期32卷 3852-3856页

作者： Jia-Lu Shen Bing-Pan Zhang Di Zhou Zhi-Kang Xu Ling-Shu Wan MOE Key Laboratory of Macromolecular Synthesis and Functionalization Key Laboratory of Adsorption and Separation Materials&Technologies of Zhejiang ProvinceDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Surface deposition based on metal-phenolic networks(MPNs) has received increasing interest in recent years. The catechol structure is generally considered to be essential to the formation of MPNs. Our most recent results have demonstrated that some kinds of monophenols can form MPNs on substrate ***, we report a fast and effective surface-coating system based on the coordination of 3-(4-hydroxy-3-methoxyphenyl)-2-propenoic acid, a kind of monophenol, with Fe^(3+). Compared with other metal ions such as Cu^(2+)and Ni^(2+), Fe^(3+)with stronger electron acceptability can coordinate with the monophenol more strongly to form MPNs, and moreover, the deposition time significantly decreases to 40 min from generally 24 h. It is demonstrated that the deposition process is controlled by the coordination, Fe^(3+)hydrolysis, and deprotonation of the monophenol. The coatings endow substrates such as polypropylene microfiltration membrane with underwater superoleophobicity, which can be applied in oil/water separation with high separation efficiency and great long-term stability. In addition, the coated membranes are positively charged and thus are useful in selective adsorption of dyes. The present work not only provides a novel, fast, and one-step deposition method to fabricate MPNs, but also demonstrates that the fabrication efficiency of monophenol-based MPNs is comparable with that of polyphenol-based MPNs.

关键词： Metal-phenolic networks Polymer membrane Surface coating Oil/water separation dye adsorption

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Photo-Grafting Copolymerization of PP Nonwoven Fabric and Its Application for Acidic dye adsorption and Filtration

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Journal of Donghua University(English Edition) 2014年第3期31卷 354-361页

作者：石小丽刘颖宋欢万恒朱新生潘志娟 College of Textile and Clothing Engineering Soochow University College of Chemistry Chemical Engineering and Materials ScienceSoochow University Suzhou Institute for Advanced Study University of Science and Technology of China National Engineering Laboratory for the Modern Silk( Suzhou)

The monomer methacrylamido propyl trimethy ammonium chloride( MAPTAC) was copolymerized onto the fiber surface of polypropylene( PP) nonwoven fabric under ultroviole radiation. The weak acid red GN dye adsorption and adsorptive filtration performance of the resulted PP fabrics were *** results showed that the grafting copolymerization preferred to happen in the inner layer of the fabrics. The water flux of the grafted fabrics decreases with the increase of grafting yield. The collapse of the grafted polymer chains causes the flux increase in acidic condition,or vice versa at alkaline version. The coiling of the polyelectrolyte chains upon the dye adsorption seems to violate the routine assumption of the rigid substrate, and this gets the adsorption energy constant negative. The static adsorption process follows the Lagergren's pseudo-second order kinetic equation. The removals of circa( ca.) 100% of the total permeation volume3 500 mL simulated dye wastewater was reached during *** dye adsorbed fabrics were regenerated by the mixed media of the cationic surfactant / ethanol /water. The grafted fabric assumes stable fabric integrity and stability during permeation,and presents excellent dye adsorption capacity,easy desorption, and repeatable utilization.

关键词： polypropylene(PP) nonwoven fabric UV irradiation grafting copolymerization water flux dye adsorption filtration

维普期刊数据库

Enhanced dye adsorption and Bacterial Removal of Magnetic Nanoparticle-Functionalized Bacterial Cellulose Acetate Membranes

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Journal of Renewable Materials 2024年第9期12卷 1605-1624页

作者： Heru Suryanto Daimon Syukri Fredy Kurniawan Uun Yanuhar Joseph Selvi Binoj Sahrul Efendi Fajar Nusantara Jibril Maulana Nico Rahman Caesar Komarudin Komarudin Centre of Advanced Material for Renewable Energy(CAMRY) Universitas Negeri MalangMalang65145Indonesia Department of Mechanical and Industrial Engineering Universitas Negeri MalangMalang65145Indonesia Department of Food and Agricultural Product Technology Faculty of Agricultural TechnologyAndalas UniversityPadang25163Indonesia Department of Chemistry Institut Teknologi Sepuluh NopemberSurabaya60111Indonesia Study Program of Aquatic Resources Management Faculty of Fisheries and Marine ScienceBrawijaya UniversityMalang65145Indonesia Institute of Mechanical Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical Sciences(SIMATS)Saveetha UniversityChennai602105India Faculty of Vocational Universitas Negeri MalangMalang65145Indonesia

Utilizing biomass waste as a potential resource for cellulose production holds promise in mitigating environmental *** current study aims to utilize pineapple biowaste extract in producing bacterial cellulose acetate-based membranes with magnetic nanoparticles(Fe_(3)O_(4)nanoparticles)through the fermentation and esterification process and explore its *** bacterial cellulose fibrillation used a high-pressure homogenization procedure,and membranes were developed incorporating 0.25,0.50,0.75,and 1.0 wt.%of Fe3O4 nanoparticles as magnetic nanoparticle for *** membrane characteristics were measured in terms of Scanning Electron Microscope,X-ray diffraction,Fourier Transform Infrared,Vibrating Sample Magnetometer,antibacterial activity,bacterial adhesion and dye adsorption *** results indicated that the surface morphology of membrane changes where the bacterial cellulose acetate surface looks *** crystallinity index of membrane increased from 54.34%to 68.33%,and the functional groups analysis revealed that multiple peak shifts indicated alterations in membrane functional ***,adding Fe_(3)O_(4)-NPs into membrane exhibits paramagnetic behavior,increases tensile strength to 73%,enhances activity against *** and ***,and is successful in removing bacteria from wastewater of the river to 67.4%and increases adsorption for anionic dyes like Congo Red and Acid Orange.

关键词： Bacterial cellulose dye adsorption Fe_(3)O_(4)nanoparticles membrane pineapple waste

Electrochemical analysis of dye adsorption on aligned carbon nanofiber arrays coated with TiO2 nanoneedles for dye-sensitized solar cell

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Frontiers of Optoelectronics 2011年第1期4卷 53-58页

作者： Jianwei LIU Jun LI Department of Physics and Astronomy University of Kansas Department of Chemistry Kansas State University

An electrochemical method has been developed to analyze dye absorption on the aligned carbon nanofiber arrays coated with TiO2nanoneedles for dyesensitized solar cell. The unique nanostructure with the roughness factor of 90.6 provides a large effective surface area for dye adsorption. The experimental results showed that the dye molecules cover 39.7% of the TiO2surface area which influences the performance of dye-sensitized solar cell. The electrochemical method provides the information of the coverage of dye molecules which is a key issue to optimize solar cell performance.

关键词： electrochemical analysis aligned carbon nanofibers dye adsorption solar cell

Two Series of New Ln-MOFs with Different Secondary Building Units and Exposed Lewis Base Active Sites: Sensing, dye adsorption, and Magnetic Properties

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Two Series of New Ln-MOFs with Different Secondary Building ...

Smart superabsorbent alginate/carboxymethyl chitosan composite hydrogel beads as efficient biosorbents for methylene blue dye removal

中国化学会第十届全国无机化学学术会议

作者： Jing Jin Guoping Yang Shan Cheng Jiao Liu Dan Wu Yao-Yu Wang Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education Shaanxi Key Laboratory of Physico-Inorganic Chemistry College of Chemistry & Materials Science Northwest University

In this work,two series of new lanthanide metal-organic frameworks (Ln-MOFs),{[Ln(L)1.5(H2O)]·DMA·4H2O}n (1-Ln,Ln=Tb,Gd,Dy) and{[La2(L)3]·4H2O}n (2-La),have been successfully assembled by Lnions and unsymmetrical N-heterocyclic dicarboxylate ligand (2-pyrimidin-5-yl)terephthalic acid (H2L).Fortunately,the four complexes we obtained were three-dimensional (3D) porous frameworks with different SBUs and were modified by exposed Lewis basic pyrimidine active ***,the topology analyses reveal that 1-Ln can be simplified as the binodal(3,8)-connected tfz-d nets with the point symbol of (4)(4·6·8),and 2-La shows a binodal (2,12)-connected net with the point symbol of (4)(4·8·12).In addition,we have further tested many performance studies,such as fluorescence sensing,gas adsorption,dye adsorption,and magnetic *** them,gas adsorption experiments show that the complex has a certain pore channel so that other properties can be further *** luminescent experiments indicated that 1-Tb is an excellent MOF-based fluorescent probe for environmentally relevant Feand ***,complexes 1-Tb and 2-La display the unique selective adsorption to CR dyes,and 1-Dy exhibits the slow magnetic relaxation behaviour.

关键词： Ln-MOFs Secondary Building Units Sensing dye adsorption Magnetic Properties

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Journal of Materials Science & Technology 2023年第28期159卷 81-90页

作者： Zhen Zhang Noureddine Abidi Lucian Lucia Department of Forest Biomaterials NC State UniversityRaleighNCUSA Fiber and Biopolymer Research Institute Department of Plant and Soil ScienceTexas Tech UniversityLubbockTXUSA Department of Chemistry NC State UniversityRaleighNCUSA

The presence of toxic dyes in the aqueous medium has threatened environmental safety, and thereby re- moving them from wastewater in an efficient way is highly desired. Herein, the efficient biosorbents were successfully fabricated via a facile physical gelation process of sodium alginate (SA) and carboxymethyl chitosan (CMCTS) in an acidic aqueous solution. The as-prepared hydrogel beads not only displayed water superabsorbent properties and pH-responsive swelling characters but also exhibited excellent methylene blue (MB) adsorption capacity removal efficiency with experimental maximum MB adsorption capacity of 2518 and 1005 mg g -1 , which are comparable with most reported lignocellulosic and alginate-based hydrogels. The MB adsorption process fitted well in different kinetic and isotherm models and became more heterogeneous in concentrated MB solutions as verified by principal component analysis results. The adsorption mechanism was proposed, and the high dye absorbency was attributed to the strong electro- static forces between adsorbents and adsorbates. Our current study provides a promising and sustainable composite hydrogels platform targeted to dye decontamination.

关键词： Hydrogel dye adsorption Composites Superabsorbent Sodium alginate Carboxymethyl chitosan

Hyper-crosslinked Porous Polymer Based on Bulk Rigid Monomer for Gas and dye Absorptions

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Chemical Research in Chinese Universities 2017年第3期33卷 479-483页

作者： SHAN Liang WANG Li FAN Yong SHEN Lanlan WANG Shengyan XU Jianing College of Chemistry Jilin University Changchun 130012 P. R. China

Using the rigid 3,3-bis（4-hydroxyphenyl）-2-（4-tritylphenyl）isoindolin-l-one with polar functional groups as a building block and formaldehyde dimethyl acetal（FDA） as crossinglinker, a new hyper-crosslinked polymer （HCP） was synthesized via Friedel-Crafts alkylation reaction promoted by anhydrous FeC13. The synthesized HCP is insoluble in boiled water and common organic solvents. Moreover, it shows a good CO2 capture capacity even if its surface area is not very high, and the absolute COz uptake capacity of it is 3.05 mmol/g. This can be attributed to the introduction of polar hydroxyl and lactam groups into the skeleton of the polymer, which provides effective adsorp- tion sites for COz. In addition, the synthesized HCP also exhibits good adsorption capacity for organic dyes in water, especially for crystal violet.

关键词： Hyper-crosslinked polymer CO2 adsorption dye adsorption

A Multifunctional Cobalt (Ⅱ) Metal-Organic Framework with Nanoporous Channels for Gas and dye Absorption, and Magnetic Performance

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Chemical Research in Chinese Universities 2023年第6期39卷 915-920页

作者： CAO Weiwei MA Zhilong TIAN Li Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of ChemistryTianjin Normal UniversityTianjin 300387P.R.China

Coordination polymer{[Co(BTIA)(H_(2)O)0.5]·1.5CH_(3)OH}n(Co-1)was synthesized from Co(NO_(3))_(2)·6H_(2)O and multidentate ligand 4,6-bis-(4H-1,2,4-triazol-1-yl)-isophthalic acid(H_(2)BTIA)under solvothermal *** analysis found that Co-1 was a(4^(4)·6^(2))_(2)(4^(16)·6^(12))3D framework with one dimensional channels,which gives it good adsorption performance for greenhouse gas CO_(2) and anionic dyes CR^(2-) and TY^(-).In particular for the large-size CR^(2-),it behaves a very fast removal *** addition,magnetic analysis discloses that antiferromagnetic(AF)coupling exists in binuclear cobalt unit.

关键词： Co(Ⅱ)ion Metal-organic framework(MOF) Gas adsorption dye adsorption Congo red