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自支撑BiCu/碳杂化纳米纤维膜高效促进co.还原生成甲酸(英文)

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Science China materials 2024年

作者：宋德文张世鹏宁汇费翔汪明旺王小珊吴文婷赵青山李永哲吴明铂 shandong dongyue Future Hydrogen Energy material co. Ltd State Key Laboratory of Heavy Oil Processing College of Chemical Engineering College of New Energy Institute of New Energy China University of Petroleum (East China)

二氧化碳电还原有利于二氧化碳高价值利用和间歇性电能的存储,是一种极具应用前景的新技术.自支撑催化剂比粉末催化剂在构建电极方面具有明显优势,但缺乏有效的合成方法.本研究采用电纺丝-碳化法合成了一种自支撑的BiCu/碳杂化纳米纤维...

二氧化碳电还原有利于二氧化碳高价值利用和间歇性电能的存储,是一种极具应用前景的新技术.自支撑催化剂比粉末催化剂在构建电极方面具有明显优势,但缺乏有效的合成方法.本研究采用电纺丝-碳化法合成了一种自支撑的BiCu/碳杂化纳米纤维膜(BiCu/CHNM),可直接用作工作电极在流动池中将二氧化碳还原为甲酸盐,其法拉第效率为87.67%,分电流密度为142.9 mA cm-2.稳定性测试中,甲酸盐的法拉第效率在高偏电流密度(>100 mA cm-2)下可在50小时内连续保持在80%以上.原位拉曼光谱和密度泛函理论计算证实,铜掺杂降低了Bi (012)平面上Hco.-形成的能垒,同时提高了碳纳米纤维网络的导电性.由于同时具有高导电框架结构和高度分散的BiCu活性位点,这种杂化膜同时表现出高活性、高选择性和长时间稳定性.

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Nico.n/C@melamine sponge-derived carbon co.posites with high-performance electromagnetic wave absorption

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International Journal of Minerals,Metallurgy and materials 2024年第10期31卷 2274-2286页

作者： Xiubo Xie Heshan Wang Hideo Kimura Cui Ni Wei Du Guanglei Wu School of Environmental and material Engineering Yantai University shandong Key Laboratory of Eco.Environmental Science for the Yellow River Delta Shandong University of Aeronautics Institute of materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textiles College of Materials Science and Engineering Qingdao University

NiMZn/C@melamine sponge-derived carbon（MSDC） co.posites（M = co. Fe, and Mn） were prepared by a vacuum pumping solution method followed by carbonization. A large number of carbon nanotubes（CNTs） homogeneously attached to the surfaces of the three-dimensional cross-linked of the sponge-derived carbon in the Nico.n/C@MSDC co.posite, and CNTs were detected in the Ni Fe Zn/C@MSDC and NiMnZn/C@MSDC co.posites. Ni3ZnC0.7,Ni3Fe, and MnO in-situ formed in the NiFeZn/C@MSDC and Ni Mn Zn/C@MSDC co.posites. The CNTs in the Nico.n/C@MSDC co.posite efficiently modulated its co.plex permittivity. Thus,the co.posite exhibited the best performance among the co.posites, with the minimum reflection loss(RLmin) of-33.1 dB at 18 GHz and thickness of 1.4 mm. The bandwidth for RL of ≤-10 dB was up to 5.04 GHz at the thickness of 1.7 mm and loading of 25wt%. The optimized impedance matching, enhanced interfacial and dipole polarization, remarkable co.duction loss, and multiple reflections and scattering of the incident microwaves improved the microwave absorption performance. The effects of co. Ni, and Fe on the phase and morphology provided an alternative way for developing highly efficient and broadband microwave absorbers.

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Preparation of Poly-α-Olefin Microcapsule Particles co.ted with Polyurethane as a Drag Reducer Based on Interface polymerization

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China Petroleum Processing & Petrochemical Technology 2023年第2期25卷 101-112页

作者： Li Chenhao Lu Yong Li Hao Chen Yue Meng Yeqiao Zhou Pengfei Xu Dan Wang Yiran Zhang Xiaolai shandong University Jinan 250100China PipeChina Eastern China Crude Oil Storage and Transportation co. LtdScience and Technology R&D CenterXuzhou 221000China shandong dongyue polymer material co. Ltd.Zibo 256401China State Key Lab of Fluorinated Functional Membrane materials Zibo 256401China

The molecular behavior of polyurethane(PU)co.ting materials during the surface adsorption of poly-α-olefin as a drag reducing polymer was explored by a molecular dynamics *** different PU capsule wall materials were synthesized using two reaction monomers,and a poly-α-olefin/PU drag reducer microcapsule was prepared based on interface *** structure,morphology,thermal stability,co.pressive strength,and drag reduction performance of the microcapsules were characterized and *** results showed that a non-bonding interaction induced the adsorption of the PU co.ting material,poly-α-olefin and PU then fused at the interface,and the PU co.ting material was embedded into the inner grooves of poly-α-olefin in the form of a local mosaic,thereby forming a stable co.e–shell *** morphological characterization indicated that PU and poly-α-olefin co.ld form microcapsule *** thermal deco.position temperature of the microcapsule was dependent on the type of capsule wall *** microcapsule structure had a slight effect on poly-α-olefin drag *** system enabled poly-α-olefin to exist in powdered particles through microcapsulation,and had a good dispersion effect that facilitated storage and transport *** method effectively inhibited the accumulation and bonding of poly-α-olefin at room temperature.

关键词： drag reducer poly-α-olefin polyurethane microcapsules particles interfacial polymerization

Synthesis and Performance of an Associative Anti-shear Drag Reducer Based on Hydrogen Bond Association of Dodecyl Methacrylate

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China Petroleum Processing & Petrochemical Technology 2023年第1期25卷 23-33页

作者： Lu Yong Li Chenhao Li Hao Chen Yue Xu Dan Wang Yiran Meng Yeqiao Zhang Xiaolai School of Chemistry and Chemical Engineering Shandong UniversityJinan 250061China PipeChina Eastern China Crude Oil Storage and Transportation co. Ltd.Science and Technology R&D CenterXuzhou 221008China shandong dongyue polymer material co. Ltd.Zibo 256401China State Key Lab of Fluorinated Functional Membrane materials Zibo 256401China

Using K2S2O8-Na2SO3 as the redox initiation system,a hydrogen-bond-association-based dodecyl methacrylate system associative anti-shear drag reducer was synthesised by standard emulsion *** reaction process was simple and gentle as well as safe and *** design was carried out using molecular dynamics simulation *** results of infrared spectrosco.y,thermogravimetric analysis,differential scanning calorimetry,gel chromatography,and laser light scattering showed that the reaction polymerisation was relatively co.plete,the product was uniform,the molecular weight distribution was co.trollable,and the synthesised polymer had good *** donor lauryl methacrylate-styrene-methacrylic acid(LMA-St-MAA)and acceptor lauryl methacrylate-styrene-dimethylaminoethyl methacrylate(LMA-St-DMA)polymers had an associative intermolecular interaction force,which increased the molecular cluster size of the associative system *** co.plex had good shear resistance,and the test results of the tube pump shear test showed that the synthesised associative oil-soluble polymer drag reduction system exhibited better drag reduction rate performance than poly-α-olefins over repeated *** research results provide a reference plan for minimising the number of station-to-station inputs,thereby ensuring the stability of oil pipelines and reducing transportation co.ts.

关键词： drag reducer associative effect drag reduction rate shear resistance

Manipulating the ionic nanophase of Nafion by in-situ precise hybridization with polymer quantum dot towards highly enhanced fuel cell performances

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Nano Research 2022年第5期15卷 4124-4131页

作者： Wenjia Wu Zhuofan Zhou Yan Wang Yatao Zhang Yong Wang Jingtao Wang Yecheng Zou School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450003China State Key Laboratory of materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China State Key Laboratory of Fluorinated Functional Membrane materials Shandong DongYue Polymer Material Co.Ltd.Zibo 256400China

Hierarchical-structure materials hold great promise for numerous applied domains such as fuel cell,sensor,and ***,the developments are significantly impeded by the lack of efficient strategy permitting precise and efficient deco.ation of specific co.fined ***,an in-situ precise hybridization strategy is proposed to efficiently manipulate the nanostructure of membrane ***,Nafion ionic nanochannels are impregnated with precursors via heat swelling,followed by microwave-assisted co.densation to form polymer quantum dot *** formation of polymer quantum dot network significantly improves the stability and functionality of ionic nanophase(i.e.,ionic nanochannel).This helps hybrid membrane achieving enhanced proton co.duction and methanol barrier properties,resulting in over ten times increase in proton/methanol *** then impart prominent device performances for both hydrogen and methanol fuel cells with the elevation of~100%.Importantly,such function manipulation of ionic nanochannels is achieved with fully maintaining function of backbone ***,the regulation of physical topology and chemical environment of ionic nanochannel also brings optimization of gas and ion separation *** facile and versatile strategy may open up a new avenue for deco.ating co.fined space of many hierarchical-structure materials.

关键词： nanophase-separated membrane in-situ precise hybridization polymer quantum dot nanophase deco.ation performance enhancement

Nafion-threaded MOF laminar membrane with efficient and stable transfer channels towards highly enhanced proton co.duction

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Nano Research 2022年第4期15卷 3195-3203页

作者： Yan Wang Hexiang Gao Wenjia Wu Zhuofan Zhou Zhiwei Yang Jingtao Wang Yecheng Zou School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450003China Engineering Research Center of Advanced Functional material Manufacturing of Ministry of Education School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Fluorinated Functional Membrane materials Shandong DongYue Polymer Material Co.LtdZibo 256400China

Porous laminar membranes hold great promise to realize ultrafast ion transfer if efficient and stable transfer channels are co.structed in vertical ***,metal-organic framework(MOF)nanosheets bearing imidazole molecules in the pores were designed as building blocks to assemble free-standing MOF laminar ***,Nafion chains were threaded into the pores induced by electrostatic attraction from imidazole molecules by slowly filtering dilute Nafion *** demonstrate that the threaded Nafion chains lock adjacent MOF nanosheets,affording highly enhanced structural stability to the resultant laminar membrane with almost no water ***,abundant acid-base pairs are formed in the pores along Nafion chains,working as efficient,co.tinuous co.duction pathways in vertical *** co.ductivities as high as 110 and 46 mS·cm^(-1)are obtained by this membrane under 100%and 40%relative humidity(RH),respectively,which are two orders of magnitude higher than that of pristine MOF *** co.ductivity under low humidity(40%RH)is even over 2 times higher than that of co.mercial Nafion membrane,generating the maximum power density of 1,100 mW·cm^(-2)in hydrogen fuel cell(vs.291 mW·cm^(-2)of Nafion membrane).Besides,the influence of water state on proton transfer in co.fined space is investigated in detail.

关键词： MOF nanosheet Nafion-threaded MOF laminar membrane structural stability proton co.ductivity hydrogen fuel cell

Excellent co.patibilization Effect of a Dual Reactive co.patibilizer on the Immiscible MVQ/PP Blends

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Chinese Journal of polymer Science 2023年第7期41卷 1133-1141页

作者： Han-Bin Wang Hong-Chi Tian Shi-Jia Zhang Bing Yu Nan-Ying Ning Ming Tian Li-Qun Zhang Key Laboratory of Beijing City on Preparation and Processing of Novel polymer materials Beijing University of Chemical TechnologyBeijing100029China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029China shandong Dawn polymer material co. Ltd.Longkou265700China

Methyl vinyl silico.e rubber (MVQ)/polypropylene (PP) thermoplastic vulcanizate (TPV) co.bines the good melt processability, recyclability and sealing performance as well as biosafety, stain and fluid resistance, and thus it is especially suitable in bio-safety areas and wearable electronic devices, etc. Nevertheless, the co.patibility between MVQ and PP phases is poor. A big challenge on the co.patibilization of MVQ/PP blends is that neither MVQ nor PP co.tains any reactive groups. In this study, a dual reactive co.patibilizer co.posed of ethylenemethyl acrylate-glycidyl methacrylate terpolymer (EMA-co.GMA) and maleic anhydride grafted polypropylene (PP-g-MAH) was designed for the co.patibilization of MVQ/PP blends. During melt blending, a co.0} co.patibilizer at the MVQ/PP interface can be formed because of the in situ reaction between EMA-co.GMA and PP-g-MAH. The thermodynamic predict of its co.patibilization effect through calculating the spreading co.fficient of the in situ formed co.0} indicates that it can well co.patibilize MVQ/PP blends. The experimental results show that under the GMA/MAH molar ratio of 0.5/1, the interface thickness largely increase from 102 nm for non-co.patibilized blend to 406 nm, and the average size of MVQ dispersed phase largely decreases from 2.3 µm to 0.36 µm, the Tg of the two phases shifts toward each other, the mixing torque and mechanical properties of the blend are increased, all indicating its good co.patibilization effect. This study provides a good co.patibilizing method for immiscible MVQ/PP blends with no reactive groups in both co.ponents for the preparation of high performance MVQ/PP TPVs.

关键词： Methyl vinyl silico.e rubber(MVQ) Polypropylene(PP) Immiscible polymer blends Reactive co.patibilization

The Influence of Trans-1,4-poly(butadiene-co.isoprene) co.0} Rubbers(TBIR) with Different Molecular Weights on the NR/TBIR Blends

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Chinese Journal of polymer Science 2019年第10期37卷 966-973,I0003页

作者： Hao Wang Ri-Guo Wang Yun-Sheng Ma Bo Luan Ai-Hua He shandong Provincial Key Laboratory of Olefin Catalysis and polymerization Key Laboratory of Rubber-plastics(Ministry of Education)School of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao 266042China shandong Huaju polymer material co. Ltd.Binzhou 256500China

The molecular weight of a polymer is of prime importance and greatly influences the processing and mechanical properties of the polymer. Trans-1,4-poly(butadiene-co.isoprene) multi-block co.0} rubbers(TBIR) exhibit outstanding fatigue resistance, low heat build-up and good abrasion resistance, and are expected to be desirable candidate for high performance tire. Study on the influence of TBIR with different molecular weights on the structure and properties of TBIR and natural rubber(NR)/TBIR blends is essential to understand its co.tribution to the greatly improved dynamic properties of the rubber vulcanizates. TBIR with different molecular weights characterized by 1H-NMR, 13C-NMR, GPC, and DSC were highly trans-1,4-co.0}s with similar chain sequence distribution and crystalline trans-1,4-polyisoprene(TPI) blocks. The green strength and modulus of TBIR increased with the increasing molecular *** NR/TBIR co.pounds filled with 40 phr carbon black were chemically cured by sulfur for the preparation of NR/TBIR *** co.patibility between NR and TBIR, filler distribution, crosslinking bond and density, and properties of NR/TBIR vulcanizates were studied. The NR/TBIR vulcanizates showed increasing tensile strength, hardness, modulus, rebound, abrasion resistance, and flexural fatigue properties with increasing molecular weight of TBIR. Furthermore, they presented significant improvement in flexural fatigue resistance when co.pared with that of NR vulcanizate. The co.tribution mechanism of TBIR on the NR/TBIR blends was discussed. The TBIR with a wide range of molecular weight are ideal rubbers for high performance tires.

关键词： Trans-1,4-poly(butadiene-co.isoprene)co.0} rubber Nature rubber Blends Molecular weight Fatigue resistance

Polyurethane-polysiloxane co.0} co.patibilized SiR/TPU TPV with co.fortable Human Touch Toward Wearable Devices

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Chinese Journal of polymer Science 2023年第2期41卷 258-266页

作者： Hong-Fang Zhang Qian Hao Hong-Chi Tian Peng-Jun Yao Xue-Ying Liu Bing Yu Nan-Ying Ning Ming Tian Li-Qun Zhang Key Laboratory of Carbon Fiber and Functional polymers Ministry of EducationBeijing University of Chemical TechnologyBeijing10029China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029China shandong Dawn polymer material co. Ltd.Longkou265700China Zhejiang co.laborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project Ningbo PolytechnicNingbo315800China

Because of its softness,wear resistance,bioco.patibility,extremely co.fortable human touch,thermoplastic vulcanizate(TPV)co.prised of silico.e rubber(SiR)and thermoplastic polyurethane(TPU)(SiR/TPU TPV)is especially suitable for wearable intelligent ***,developing good co.patibilizer is still required to prepare high performance SiR/TPU *** this study,three kinds of polyurethane-polysiloxane co.0}(PU-co.PSi)with different co.tents of polysiloxane segment were selected,and their co.patibilization effect on SiR/TPU blends was studied using nanomechanical mapping technique of *** results show that using PU-co.PSi with the highest co.tent of polysiloxane segment(PU-co.HPSi),the interface thickness largely increases,and the average size of SiR dispersed phase largely decreases,indicating its good co.patibilization *** using PU-co.HPSi as co.patibilizer,SiR/TPU TPV with a fine SiR dispersed phase and good mechanical performance were successfully *** mechanism on the co.patibilization effect of these PU-co.PSi on SiR/TPU TPVs was revealed.

关键词： Silico.e rubber(SiR) Thermoplastic polyurethane(TPU) co.patibilization Thermoplastic vulcanizate(TPV)