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Song C, Guo Y, Wang T, Liu K, Zhao PY, Liu Y, Huang H, Lu R, Zhang S. A dual-template synergistic assembly strategy towards the synthesis of extra-small nitrogen-doped mesoporous carbon nanospheres with large pores. NANOSCALE 2024. [PMID: 38990172 DOI: 10.1039/d4nr01072h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Functional mesoporous carbon nanomaterials with large pores and small particle sizes have broad accessibility, but remain challenging to achieve. This study proposed a dual-template synergistic assembly strategy to facilely synthesize extra-small nitrogen-doped mesoporous carbon nanospheres with large pores in a low-cost manner. Directed by the synergistic effect of the combination of surfactants, sodium oleate (anionic surfactant) and triblock copolymer-P123 (nonionic surfactant) were selected as templates to construct nanomicelles (nanoemulsions), which were co-assembled with melamine-based oligomers to form composite nanomicelles, thus obtaining nitrogen-doped mesoporous polymer nanospheres (NMePS) and then nitrogen-doped mesoporous carbon nanospheres (NMeCS). Based on Schiff base chemistry, the melamine-based oligomers with self-assembly capability were synthesized as precursors, which is different from the conventional synthetic route of melamine-formaldehyde resin. The key parameters involved in the route were investigated comprehensively and correlated with the characterization results. Furthermore, the 50 nm-scale particle size and the large mesoporous size of 5.5 nm of NMeCS can facilitate effective mass transport, coupled with their high nitrogen content (15.7 wt%), contributing to their excellent performance in lithium-ion batteries.
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Affiliation(s)
- Caicheng Song
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
- SINOPEC, Dalian Res Inst Petr & Petrochem Co. Ltd, 96 Nankai St, Dalian 116045, P. R. China
| | - Yiwen Guo
- Institute of Materials and Technology, Dalian Maritime University, Dalian 116026, China
| | - Tianwei Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
| | - Kun Liu
- SINOPEC, Dalian Res Inst Petr & Petrochem Co. Ltd, 96 Nankai St, Dalian 116045, P. R. China
- Institute of Materials and Technology, Dalian Maritime University, Dalian 116026, China
| | - Pin-Yi Zhao
- SINOPEC, Dalian Res Inst Petr & Petrochem Co. Ltd, 96 Nankai St, Dalian 116045, P. R. China
- Institute for Materials Discovery, University College London, WC1E 7JE, UK
- Department of Chemistry, University College London, WC1H 0AJ, UK
| | - Ying Liu
- SINOPEC, Dalian Res Inst Petr & Petrochem Co. Ltd, 96 Nankai St, Dalian 116045, P. R. China
| | - He Huang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
| | - Rongwen Lu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
| | - Shufen Zhang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
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2
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Liu L, He S, Tang L, Yang S, Ma T, Su X. Application of CO 2-Switchable Oleic-Acid-Based Surfactant for Reducing Viscosity of Heavy Oil. Molecules 2021; 26:6273. [PMID: 34684854 PMCID: PMC8539459 DOI: 10.3390/molecules26206273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/14/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022] Open
Abstract
CO2-switchable oligomeric surfactants have good viscosity-reducing properties; however, the complex synthesis of surfactants limits their application. In this study, a CO2-switchable "pseudo"-tetrameric surfactant oleic acid (OA)/cyclic polyamine (cyclen) was prepared by simple mixing and subsequently used to reduce the viscosity of heavy oil. The surface activity of OA/cyclen was explored by a surface tensiometer and a potential for viscosity reduction was revealed. The CO2 switchability of OA/cyclen was investigated by alternately introducing CO2 and N2, and OA/cyclen was confirmed to exhibit a reversible CO2-switching performance. The emulsification and viscosity reduction analyses elucidated that a molar ratio of OA/cyclen of 4:1 formed the "pseudo"-tetrameric surfactants, and the emulsions of water and heavy oil with OA/cyclen have good stability and low viscosity and can be destabilized quickly by introducing CO2. The findings reported in this study reveal that it is feasible to prepare CO2-switchable pseudo-tetrameric surfactants with viscosity-reducing properties by simple mixing, thus providing a pathway for the emulsification and demulsification of heavy oil by using the CO2-switchable "pseudo"-oligomeric surfactants.
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Affiliation(s)
- Lulu Liu
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, SINOPEC Exploration & Production Research Institute, Beijing 100083, China; (L.L.); (S.Y.); (T.M.)
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Shuai He
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu 610041, China; (S.H.); (L.T.)
| | - Lu Tang
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu 610041, China; (S.H.); (L.T.)
| | - Shu Yang
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, SINOPEC Exploration & Production Research Institute, Beijing 100083, China; (L.L.); (S.Y.); (T.M.)
| | - Tao Ma
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, SINOPEC Exploration & Production Research Institute, Beijing 100083, China; (L.L.); (S.Y.); (T.M.)
| | - Xin Su
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Li J, Li Y, Wang Z, Zhang L, Jiang Y, Zhang W, Wu J. Properties of Mixed System of N‐Coco Propylene Bis‐guanidine Acetate (CPGA) and Nonionic Surfactants. ChemistrySelect 2021. [DOI: 10.1002/slct.202102335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Li
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Yunling Li
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Zhifei Wang
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Lu Zhang
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Yajie Jiang
- China Research Institute of Daily Chemistry Co., Ltd Taiyuan 030001 China
| | - Wei Zhang
- Sinolight Surfactants Technology Co., Ltd. Shanghai 201512 China
| | - Junli Wu
- Sinolight Surfactants Technology Co., Ltd. Shanghai 201512 China
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4
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Synthesis, structure, and properties of N-2-hydroxylpropyl-3-trimethylammonium-O-carboxymethyl chitosan derivatives. Int J Biol Macromol 2020; 144:568-577. [DOI: 10.1016/j.ijbiomac.2019.12.125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 11/23/2019] [Accepted: 12/14/2019] [Indexed: 01/10/2023]
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5
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Zhang Z, Jia B, Liu L, Zhao Y, Wu H, Qin M, Han K, Wang WA, Xi K, Zhang L, Qi G, Qu X, Kumar RV. Hollow Multihole Carbon Bowls: A Stress-Release Structure Design for High-Stability and High-Volumetric-Capacity Potassium-Ion Batteries. ACS NANO 2019; 13:11363-11371. [PMID: 31525956 DOI: 10.1021/acsnano.9b04728] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Potassium-ion batteries are potential alternatives to lithium-ion batteries for large-scale energy storage considering the low cost and high abundance of potassium. However, it is challenging to obtain stable electrode materials capable of undergoing long-term potassiation/depotassiation due to the high accumulated stress associated with the huge volume variation of the electrode. Here, we simulate the von Mises stress distributions of four different carbon three-dimensional models under an isotropic initial stress by the finite element method and reveal the critical role of the structure of a hollow multihole bowl on the strain-relaxation behavior. In this regard, nitrogen/oxygen codoped carbon hollow multihole bowls (CHMBs) are synthesized via hydrothermal carbonization coupled with an emulsion-templating strategy using biomass as the carbon source. Consistent with our simulation results, the CHMB anode remains stable for over 1000 cycles and delivers a high reversible capacity of 304 mAh g-1 at 0.1 A g-1. In addition to the reduced stress accumulation, the good electrochemical performances are also attributed to the surface capacitive mechanism and the shortened electron/ion transport distance in CHMBs. In particular, the CHMB composite electrode has a volumetric specific capacity 56% higher than that of hollow spheres due to the high tapped density of the bowl-shaped particles.
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Affiliation(s)
- Zili Zhang
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
- Department of Electrical Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Baorui Jia
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
- Department of Materials Science and Engineering , Cornell University Ithaca , New York 14853 , United States
| | - Luan Liu
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
| | - Yongzhi Zhao
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
| | - Haoyang Wu
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
| | - Mingli Qin
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
- Beijing Advanced Innovation Center for Materials Genome Engineering , University of Science and Technology Beijing , Beijing 100083 , China
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge CB3 0FS , United Kingdom
| | - Kun Han
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
| | - Wei Alex Wang
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Space and Environment , Beihang University , Beijing 100191 , China
| | - Kai Xi
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge CB3 0FS , United Kingdom
| | - Lin Zhang
- Media Lab , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Genggeng Qi
- Department of Materials Science and Engineering , Cornell University Ithaca , New York 14853 , United States
| | - Xuanhui Qu
- Institute for Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
- Beijing Advanced Innovation Center for Materials Genome Engineering , University of Science and Technology Beijing , Beijing 100083 , China
| | - Ramachandran Vasant Kumar
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge CB3 0FS , United Kingdom
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6
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Inhibition of fine particles fugitive emission from the open-pit lignite mines by polymer aqueous solutions. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Chen C, Li X, Deng J, Wang Z, Wang Y. Shape Engineering of Biomass-Derived Nanoparticles from Hollow Spheres to Bowls through Solvent-Induced Buckling. CHEMSUSCHEM 2018; 11:2540-2546. [PMID: 29923347 DOI: 10.1002/cssc.201801215] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 06/15/2018] [Indexed: 05/21/2023]
Abstract
The realization of asymmetric hollow carbonaceous nanostructures remains a great challenge, especially when biomass is chosen as the carbon resource through hydrothermal carbonization (HTC). Herein, a simple and straightforward solvent-induced buckling strategy is demonstrated for the synthesis of asymmetric spherical and bowl-like carbonaceous nanomaterials. The formation of the bowl-like morphology was attributed to the buckling of the spherical shells induced by the dissolution of the oligomers. The bowl-like particles prepared through this solvent-driven approach demonstrated a well-controlled morphology and a uniform particle size of approximately 360 nm. The obtained nanospheres and nanobowls were loaded with CoS2 nanoparticles to act as heterogeneous catalysts for the selective hydrogenation of aromatic nitro compounds. As expected, the CoS2 /nanobowls catalyst showed good tolerance to a wide scope of reducible groups and afforded both high activity and selectivity in almost all the tested substrates.
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Affiliation(s)
- Chunhong Chen
- Advanced Materials and Catalysis Group, Institute of Catalysis, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Xuefeng Li
- Advanced Materials and Catalysis Group, Institute of Catalysis, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Jiang Deng
- Advanced Materials and Catalysis Group, Institute of Catalysis, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Zhe Wang
- Advanced Materials and Catalysis Group, Institute of Catalysis, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Yong Wang
- Advanced Materials and Catalysis Group, Institute of Catalysis, Zhejiang University, Hangzhou, 310028, P. R. China
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8
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Padsala S, Dharaiya N, Ray D, Aswal VK, Sastry NV, Bahadur P. Self-organization of mixtures of sodium oleate and imidazolium based surface active ionic liquids studied by tensiometry, rheology and neutron scattering. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.10.108] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Umapathi R, Reddy PM, Rani A, Venkatesu P. Influence of additives on thermoresponsive polymers in aqueous media: a case study of poly(N-isopropylacrylamide). Phys Chem Chem Phys 2018; 20:9717-9744. [DOI: 10.1039/c7cp08172c] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Thermoresponsive polymers (TRPs) in different solvent media have been studied over a long period and are important from both scientific and technical points of view.
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Affiliation(s)
| | - P. Madhusudhana Reddy
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
- Department of Chemical Engineering
| | - Anjeeta Rani
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
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10
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Magnet C, Lomenech C, Hurel C, Reilhac P, Giulieri F, Chaze AM, Persello J, Kuzhir P. Adsorption of nickel ions by oleate-modified magnetic iron oxide nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:7423-7435. [PMID: 28108923 DOI: 10.1007/s11356-017-8391-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
In this work, magnetic nanoparticles of iron oxide (MNPs) were synthesized, and then the surface was recovered with an oleate double layer in order to investigate the ability of this material to adsorb nickel ions. First, the solution chemistry of oleate ions was investigated in order to determine the critical micellar concentration (CMC) value and the arrangements of ions above the CMC. Then, the synthesized oleate-modified MNP was characterized (TEM, DLS, XRD, FTIR, zeta potential, magnetometry). Finally, adsorption experiments were carried out as a function of pH and as a function of nickel concentration in 0.1 g L-1 suspensions of oleate-modified MNP. The results show that CMC of oleate ranges from 1 to 2.5∙10-3 mol L-1. Above CMC, arrangement of oleate ions as droplets, vesicles, or micelles depends on pH and influences the average size and solution absorbance. Potentiometric titrations allowed determining a pKa value of 7.8 for sodium oleate. The high stability in aqueous suspensions and characterization of oleate-modified MNP confirm that oleate ions are arranged as a bilayer coating at the surface of MNP. Retention of nickel was found to be highly dependent on pH, with a maximum adsorption (90%) beginning from pH = 7.5. The sorption isotherms were well fitted with the Langmuir model and the maximum nickel adsorption capacities were found to be 44 and 80 mg g-1 for pH = 6.8 and 7.2, respectively. The efficient removal of nickel combined with the magnetic properties of the NMP make the oleate-modified MNP an interesting water purification tool.
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Affiliation(s)
| | | | | | - Pierre Reilhac
- Université Côte d'Azur, CNRS, INPHYNI, Nice, France
- Laboratoire des Sciences de l'Ingénieur pour l'Environnement, Pôle Sciences et Technologie, Avenue Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - Françoise Giulieri
- Université Côte d'Azur, CNRS, INPHYNI, Nice, France
- PIGM'Azur, Le Majestic, 4 boulevard de Cimiez, 06000, Nice, France
| | - Anne-Marie Chaze
- Université Côte d'Azur, CNRS, INPHYNI, Nice, France
- PIGM'Azur, Le Majestic, 4 boulevard de Cimiez, 06000, Nice, France
| | | | - Pavel Kuzhir
- Université Côte d'Azur, CNRS, INPHYNI, Nice, France
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Chen C, Wang H, Han C, Deng J, Wang J, Li M, Tang M, Jin H, Wang Y. Asymmetric Flasklike Hollow Carbonaceous Nanoparticles Fabricated by the Synergistic Interaction between Soft Template and Biomass. J Am Chem Soc 2017; 139:2657-2663. [DOI: 10.1021/jacs.6b10841] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Chunhong Chen
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Haiyan Wang
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Chuanlong Han
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Jiang Deng
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Jing Wang
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Mingming Li
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Minghui Tang
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Haiyan Jin
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
| | - Yong Wang
- Advanced Materials and Catalysis Group, ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
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12
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Zhou T, Zhou Y, Ma R, Zhou Z, Liu G, Liu Q, Zhu Y, Wang J. In situ formation of nitrogen-doped carbon nanoparticles on hollow carbon spheres as efficient oxygen reduction electrocatalysts. NANOSCALE 2016; 8:18134-18142. [PMID: 27738693 DOI: 10.1039/c6nr06716f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In situ formation of nitrogen-doped carbon nanoparticles on hollow carbon spheres (NHCSs) were successfully realised via a simple, scalable emulsion polymerization route using melamine as the nitrogen precursor, followed by thermal treatment at 1000 °C in N2. All NHCSs show large BET specific surface areas (648.2-837.7 cm2 g-1) and pore volumes (0.91-1.16 cm3 g-1), evidently superior to N-free hollow carbon spheres (HCSs) (524.3 cm2 g-1 and 0.48 cm3 g-1, respectively). This unique nanocomposite has hierarchical micro-/mesoporosity (1.9 nm and 16.2-19.0 nm). The X-ray photoelectron spectroscopy (XPS) measurements indicate the successful introduction of N atoms into the carbon framework and that the N-doping level can be controlled by changing the amount of melamine. The N-doping by adding melamine during the hydrothermal process not only affects the morphologies and porosities of the final samples, but also improves the electrocatalytic activity compared to N-free HCSs. NHCS-2, prepared with the molar melamine/hexamethylentetramine ratio of 1, showed the best electrocatalytic activity for the oxygen reduction reaction (ORR) in terms of onset potential, half-wave potential and limit current density. The NHCS-2 exhibited not only excellent activity with a mainly four-electron reaction pathway, but also superior long-term durability and methanol tolerance to that of commercial Pt/C in alkaline solution. The excellent electrocatalytic activity of the NHCS-2 is mainly due to its high relative content of pyridinic- and graphitic-N groups as well as unique hierarchical micro-/mesoporosity and a large specific surface area, advantageous for mass transfer and thus improving the electrocatalytic activity.
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Affiliation(s)
- Tingsheng Zhou
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, P. R. China. and State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China.
| | - Yao Zhou
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China.
| | - Ruguang Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China.
| | - Zhenzhen Zhou
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China.
| | - Guanghui Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China.
| | - Qian Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China. and Shanghai Institute of Materials Genome, Shanghai, P. R. China
| | - Yufang Zhu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, P. R. China.
| | - Jiacheng Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China. and Shanghai Institute of Materials Genome, Shanghai, P. R. China
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Zhu H, Qin W, Chen C, Liu R. Interactions Between Sodium Oleate and Polyoxyethylene Ether and the Application in the Low-Temperature Flotation of Scheelite at 283 K. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1864-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Gong H, Xu L, Zhu T, Xu G, Shi X, Dong M, Li Y. Interactions between pluronic block polyether and CTAB at air/water interface: interfacial dilational rheology study. Colloid Polym Sci 2016. [DOI: 10.1007/s00396-016-3919-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Petrenko V, Avdeev M, Garamus V, Bulavin L, Kopcansky P. Impact of polyethylene glycol on aqueous micellar solutions of sodium oleate studied by small-angle neutron scattering. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.11.064] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Ren H, Xin X, Wang L, Ju H, Zhamanding A, Xu G. A direct comparison of the interaction of bovine serum albumin and gelatin with sodium deoxycholate in aqueous solutions. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.03.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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18
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Wang GH, Hilgert J, Richter FH, Wang F, Bongard HJ, Spliethoff B, Weidenthaler C, Schüth F. Platinum-cobalt bimetallic nanoparticles in hollow carbon nanospheres for hydrogenolysis of 5-hydroxymethylfurfural. NATURE MATERIALS 2014; 13:293-300. [PMID: 24553655 DOI: 10.1038/nmat3872] [Citation(s) in RCA: 319] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 12/10/2013] [Indexed: 05/14/2023]
Abstract
The synthesis of 2,5-dimethylfuran (DMF) from 5-hydroxymethylfurfural (HMF) is a highly attractive route to a renewable fuel. However, achieving high yields in this reaction is a substantial challenge. Here it is described how PtCo bimetallic nanoparticles with diameters of 3.6 ± 0.7 nm can solve this problem. Over PtCo catalysts the conversion of HMF was 100% within 10 min and the yield to DMF reached 98% after 2 h, which substantially exceeds the best results reported in the literature. Moreover, the synthetic method can be generalized to other bimetallic nanoparticles encapsulated in hollow carbon spheres.
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Xin X, Zhu Y, Cao X, Xu G. Interaction Between an Ethoxylated Alkylphenol Polymer with Formaldehyde and Triblock polyEO–polyPO–polyEO Copolymer in Aqueous Solutions. J SURFACTANTS DETERG 2013. [DOI: 10.1007/s11743-013-1447-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Gong H, Xu G, Liu T, Xu L, Zhai X, Zhang J, Lv X. Aggregation behaviors of PEO-PPO-ph-PPO-PEO and PPO-PEO-ph-PEO-PPO at an air/water interface: experimental study and molecular dynamics simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13590-13600. [PMID: 22954368 DOI: 10.1021/la303430c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The block polyethers PEO-PPO-ph-PPO-PEO (BPE) and PPO-PEO-ph-PEO-PPO (BEP) are synthesized by anionic polymerization using bisphenol A as initiator. Compared with Pluronic P123, the aggregation behaviors of BPE and BEP at an air/water interface are investigated by the surface tension and dilational viscoelasticity. The molecular construction can influence the efficiency and effectiveness of block polyethers in decreasing surface tension. BPE has the most efficient ability to decrease surface tension of water among the three block polyethers. The maximum surface excess concentration (Γ(max)) of BPE is larger than that of BEP or P123. Moreover, the dilational modulus of BPE is almost the same as that of P123, but much larger than that of BEP. The molecular dynamics simulation provides the conformational variations of block polyethers at the air/water interface.
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Affiliation(s)
- Houjian Gong
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, P. R. China
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Pang J, Xu G, Tan Y. Experimental research and DPD simulation on the interaction between an ethoxy-modified trisiloxane and F127. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2615-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Synthesis of block polyethers with various structures and their application in dispersing single-walled carbon nanotubes. Colloid Polym Sci 2011. [DOI: 10.1007/s00396-011-2419-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gong H, Xu G, Shi X, Liu T, Sun Z. Comparison of aggregation behaviors between branched and linear block polyethers: MesoDyn simulation study. Colloid Polym Sci 2010. [DOI: 10.1007/s00396-010-2294-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Xin X, Xu G, Ge L, Chen Y, Wang Y, Zhang X, Guo R. Comparison of the Surface Dilational Properties of Block Copolymers and Sodium Oleate Using the Oscillating Bubble Method. J DISPER SCI TECHNOL 2010. [DOI: 10.1080/01932690903218666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mercurieva AA, Birshtein TM, Leermakers FAM. Modeling of charged amphiphilic copolymer stars near hydrophobic surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:11516-11527. [PMID: 19788214 DOI: 10.1021/la9014465] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Numerical self-consistent field theory has been applied to amphiphilic copolyelectrolyte stars in the solution and at interfaces both in one- and two-gradient coordinate systems. Our focus is on polymer stars for which the solvent is poor for the short blocks in the center and good for the longer charged chain parts at the periphery of the star. Both in solution as well as near an interface, the structure of the core is influenced by the hydrophobic interactions that tend to form a compact globule with size Rc and the forces exerted by the charged peripheral chain parts that like to expand the core. When the distance H of the center of the star to the surface becomes smaller than the total size R, the interaction force becomes significant; it is positive for Rc<H<R, and rather suddenly becomes strongly attractive at shorter distances when the core can adsorb. Hence, the adsorption as well as the desorption of stars involves the passing of an activation barrier. Details of this barrier are important for a rational design of polymer stars that are of use to modify surface properties.
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Affiliation(s)
- A A Mercurieva
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. 31, RU-199004 St. Petersburg, Russia
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Gong H, Xu G, Ding H, Shi X, Tan Y. Aggregation behavior of block polyethers with branched structure at air/water surface. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.05.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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