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Simplified creation of polyester fabric supported Fe-based MOFs by an industrialized dyeing process: Conditions optimization, photocatalytics activity and polyvinyl alcohol removal

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Journal of Environmental Sciences 2022年第6期34卷 52-67页

作者： Liran Bian Yongchun Dong biao jiang Division of Textile Chemistry and Environmental Care School of Textile Science and EngineeringTiangong UniversityTianjin 300387China Key Laboratory of Advanced Textile Composite of Ministry of Education Tiangong UniversityTianjin 300387China

MIL-53(Fe) was successfully prepared and deposited on the surface carboxylated polyester(PET) fiber by an optimized conventional solvothermal or industrialized high temperature pressure exhaustion(HTPE) process to develop a PET fiber supported MIL-53(Fe) photocatalyst(MIL-Fe@PET) for the degradation of polyvinyl alcohol(PVA) in water under light emitting diode(LED) visible irradiation. On the basis of several characterizations, MIL-Fe@PET was tested for the photocalytic ability and degradation mechanism. It was found that temperature elevation significantly enhanced the formation and deposition of MIL-53(Fe) with better photocatalytic activity. However, higher temperature than 130℃ was not in favor of its photocatalytic activity. Increasing the number of surface carboxyl groups of the modified PET fiber could cause a liner improvement in MIL-53(Fe) loading content and photocatalytic ability. High visible irradiation intensity also dramatically increased photocatalytic ability and PVA degradation efficiency of MIL-Fe@PET. Na_(2)S_(2)O_(8) was used to replace H_(2)O_(2) as electron acceptor for further promoting PVA degradation in this system. MIL-Fe@PET prepared by HTPE process showed higher MIL-53(Fe) loading content and slightly lower PVA degradation efficiency than that prepared by solvothermal process at the same conditions. These findings provided a practical strategy for the large-scale production of the supported MIL-53(Fe) as a photocatalyst in the future.

关键词： MIL-53(Fe) Polyester fabric Exhaustion dyeing Visible light photocatalyst Polyvinyl alcohol removal

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Geochemistry, Monazite U–Pb Dating, and Li–Nd Isotopes of the Madi Rare Metal Granite in the Northeastern Part of the North China Craton

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Acta Geologica Sinica(English Edition) 2019年第4期93卷 901-911页

作者： HOU jianglong jiang biao DAI Hongzhang MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China

The Madi rare metal granite is a complex massif,which contains a variety of rare metals,such as Nb,Ta,Li,and *** this paper,the geochemical characteristics of the granite were obtained by multi-collector inductively coupled mass spectrometry(MC-ICP-MS).The precise crystalline age of the granite was obtained from monazite U-Pb dating,and the source of the granite was determined using Li-Nd *** Madi rare metal granite is a high-K(calc-alkaline),peraluminous,S-type *** U-Pb monazite age indicates that the crystalline age of the granite is 175.6 Ma,which is Early *** granite is characterized by a relatively wide range ofδ7 Li values(+2.99‰to+5.83‰)and high lithium concentrations(181 ppm to 1022 ppm).The lithium isotopic composition of the granite does not significantly correlate with the degree of magmatic *** insignificant amount of lithium isotope fractionation occurred during the granitic *** lithium isotopic composition of the granite significantly differs from that of the wall rock,but it is very similar to that of a primitive mantle peridotite xenolith(meanδ7 Li value+3.5‰).The plot of Li concentration versusδ7 Li indicates that the Li isotopic composition of the granite is similar to that of island arc *** on the above-described evidence,the granite was mainly derived from the crust,but it was contaminated by a deep granitic magma.

关键词： geochemistry U-Pb monazite age Li-Nd isotopes crystallization age magmatic source Madi rare metal granite

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Strategies for synthesizing non-bioaccumulable alternatives to PFOA and PFOS

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Chinese Chemical Letters 2015年第5期26卷 491-498页

作者： Min Sha Ping Xing biao jiang School of Chemical Engineering Nanjing University of Science and Technology CAS Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic ChemistryChinese Academy of Sciences

This minireview describes the strategies for synthesis of fluorinated surfactants potentially non- bioaccumulable. Various strategies have been focused on （Ⅰ） reducing the length of the perfluorocarbon chain, （Ⅱ） introducing hereto atoms into the fluorocarbon chain, （Ⅲ） introducing branch （herein and after branch means the fluoro-carbon chain section is not straight）. In most cases, the surface tensions versus the surfactant concentrations have been assessed. These above strategies led to various highly fluorinated （perfluorinated or not perfluorinated） surfactants whose chemical changes enabled to obtain novel alternatives to perfluorooctanoic acid （PFOA） and perfluorooctane sulphonate （PFOS）.

关键词： Fluorinated surfactant PFOA PFOS Alternative Surface tension

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Anionic polymerization of fluorine-substituted phenyl methacrylates

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Science China Chemistry 2015年第1期58卷 107-113页

作者： Bin Li Pan Zhou Yuefei Chen biao jiang Hongping Zhu State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters College of Chemistry and Chemical Engineering Xiamen University

Synthesis and anionic polymerization of the fluorine-substituted phenyl methacrylates are herein reported. A series of monodi-, and multi-substituted fluorophenyl methacrylates H2C=C（CH3）C（O）OC6H4F-4 （M^1a）, H2C=C（CH3）C（O）OC6H4F-3 （M^1b）, HEC=C（CH3）C（O）OC6H3F2-2,4 （M^2）, H2C=C（CH3）C（O）OC6H2F3-2,3,4 （M^3）, H2C=C（CH3）C（O）OC6HF4-2,3,5,6 （M^4）, and H2C=C（CH3）C（O）OC6F5 （M^5） were synthesized and characterized. Initially, the polymerization was carded out on the monomer M^1a by using nBuLi, tBuLi, and KH as the respective catalysts; this approach produced the polymers in yields of 12%-50%, but with lower molecular weights. Similar results were obtained by using tBuLi for catalytically polymerizing the other five monomers. By introducing a co-catalyst MeAl（BHT）2, the catalysts Nail, LiH, and tBuOLi each were tested to polymerize M^1a, which gave the polymers in very low yields （3%-7%）. Polymer yields of 13%-27% were obtained by each of the catalysts LiAlH4, nBuLi, PhLi, and tBuLi in connection with MeAI（BHT）2, but a better yield （61%） was achieved with KH/MeAl（BHT）2. The KH/MeAl（BHT）2 catalyst system was further employed to polymerize M^1b and M^2, which afforded respective polymer yields of 12%-63% and 10%-53%, depending on the molar ratios of KH：MeAl（BHT）2 as well as on the monomer concentrations. All of the polymers produced were syndiotactically rich in structure, as indicated by either ^1H or ^19F NMR data. The polymerization mechanism by the combined catalyst system is proposed.

关键词： fluorophenyl methacrylates the combined catalyst system anionic polymerization syndiotactic polymer,^1H and ^19F NMR data

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One-step solvothermal synthesis of N-doped TiO_2 nanoparticles with high photocatalytic activity in the reduction of aqueous Cr(Ⅵ)

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Chinese Chemical Letters 2014年第2期25卷 283-286页

作者： Jing Li Min Yang Zun-biao jiang School of Chemistry and Chemical Engineering Xuzhou Institute of Technology

N-doped TiO2 （N-TiO2） nanoparticles were synthesized via a one-step low temperature （180℃） solvothermal route, which adopted NH4NO3 as the nitrogen source. The structure, composition, BET specific surface area, and optical properties of the as-synthesized product were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, N2 adsorption- desorption isotherms, and UV-vis diffuse reflectance spectroscopy. In addition, its photocatalytic properties were tested by the reduction of aqueous Cr（VI） under UV and visible light （x 〉 420 rim） irradiation. It was observed that for the reduction of aqueous Cr（VI）, the as-synthesized N-TiO2 nanoparticles not only exhibited much higher photocatalytic activity than P25 TiO2 under UV light, but also exhibited remarkably high photocatalytic activity under visible light （λ 〉 420 nm）.

关键词： vNanoparticles Semiconductors Functional Powder technology

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One-pot Synthesis of Aromatic Fused 2,3-Dihydroindanone by Tandem Pauson-Khand/Michael/Henry Reaction

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Chinese Journal of Chemistry 2013年第1期31卷 49-54页

作者： Mingming Li Ping Xing Zuogang Huang biao jiang CAS Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China Shanghai Advanced Research Institute Chinese Academy of Sciences 99 Haike Road Shanghai 201210 China

The intermolecular Pauson-Khand reaction between 2-ethynylbenzaldehyde and ethylene promoted by dimethyl sulfide can be utilized to synthesize 2-（2-formylphenyl）cyclopentenone efficiently. This compound and its deriva- tives undergo a cascade process of Michael addition reaction followed by Henry reaction with nitromethane to con- struct substituted aromatic fused 2,3-dihydroindanones. Furthermore, direct one-pot synthesis of aromatic fused 2,3-dihydroindanones from 2-ethynylbenzaldehyde is achieved.

关键词： 2-ethynylbenzaldehyde tandem Pauson-Khand/Michael/Henry reaction aromatic fused 2,3-dihydro-indanone

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First preparation of a novel polyol resin for purifying arylboronic acids

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Chinese Chemical Letters 2012年第9期23卷 993-995页

作者： Fu Long Liu Sheng biao Wan Tao jiang Key Laboratory of Marine Drugs Chinese Ministry of Education Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology School of Medicine and Pharmacy Ocean University of China Qingdao 266003

A novel polystyrene-supported triol resin was first prepared by reaction of the Merrifield resin with trometamol. Using this resin, arylboronic acids were efficiently isolated and purified through a ＂capture-release＂ procedure in organic solvents. However, in basic aqueous solvents arylboronic acids were immobilized on the resin only with low yield. 2012 Tao jiang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All fights reserved.

关键词： Polystyrene-supported polyol resin Arylboronic acid Immobilization

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Synthesis and combined properties of novel fluorinated cationic surfactants derived from hexafluoropropylene dimer

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Chinese Chemical Letters 2018年第11期29卷 1613-1616页

作者： Chao Lin Renming Pan Ping Xing biao jiang School of Chemical Engineering Nanjing University of Science and Technology CAS Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic ChemistryChinese Academy of Sciences

Three novel fluorinated cationic surfactants were prepared by adopting perfluoro-2-methy1-2-pentene as raw substrate. The as-obtained fluorinated cationic surfactants exhibited excellent surface properties, all of them can reduce the surface tension of water to below 20.00mN/m at the critical micelle concentrations （CMC）. The incorporation of SDS, AOS, APG or LAB into 2-（4-（3,3,4,4,5,5,5-heptafluoro- 2,2-bis（trifluoromethyl）pentyl）benzamido）-N,N-dimethylethana-mine oxide 4a could generate much lower CMC and surface tension value at the CMC than individual 4a. Especially, the surface tension values of that combined APG/4a can be reduced to 17.31 mN/m. The excellent surface activities and their remarkable compatibility to various types of hydrocarbon surfactants make them as sustainable alternatives to PFOA （perfluorooctanoic acid, C7F15CO2H） and PFOS （perfluorooctane sulphonate, C8F17SO3X, with X = K, Na, H）.

关键词： Fluorinated cationic surfactants Surface tension Combined properties Fire fighting Aqueous film forming foams

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Co_(2)(CO)_(8)-mediated Selective Reductions of Propargyl Alcohol Derivatives to Alkenes

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Chinese Journal of Chemistry 2014年第10期32卷 999-1002页

作者： Ying Dou Ping Xing Zuogang Huang biao jiang CAS Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling RoadShanghai 200032China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China

In the presence of Co_(2)(CO)_(8) and additives,propargyl alcohol derivatives could be reduced to alkenes in moderate to good *** selectivity of this reaction could be controlled by adding different additives:with H_(2)O as the additive,the major configuration of product is Z-alkene;with CF_(3)COOH as the additive,the major configuration of product is E-alkene.

关键词： Co_(2)(CO)_(8) propargyl alcohol reduction alkene

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A New Flavan from Sinacalia tangutica

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Chinese Chemical Letters 2005年第8期16卷 1056-1058页

作者： Man Jun MAO Jun Lü QIAN biao jiang Department of Chemistry Tongji University Shanghai 200092

A new flavan named 4α; 5-dimethoxy-8-formyl-7-hydroxy-6-methylflavan （1） was isolated from Sinacalia tangutica. Its structure was determined using spectroscopic methods and X-ray diffraction experiments.

关键词： Sinacalia tangutica Compositae flavan X-ray.

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