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Wu H, Chen J, Jiang T, Wu W, Li M, Zhang S, Li Z, Ye H, Zhu M, Zhou J, Lu Y, Jiang H. Effect of Eccentricity Difference on the Mechanical Response of Microfluidics-Derived Hollow Silica Microspheres during Nanoindentation. MICROMACHINES 2024; 15:109. [PMID: 38258228 PMCID: PMC10821515 DOI: 10.3390/mi15010109] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/03/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024]
Abstract
Hollow microspheres as the filler material of syntactic foams have been adopted in extensive practical applications, where the physical parameters and their homogeneity have been proven to be critical factors during the design process, especially for high-specification scenarios. Based on double-emulsion droplet templates, hollow microspheres derived from microfluidics-enabled soft manufacturing have been validated to possess well-controlled morphology and composition with a much narrower size distribution and fewer defects compared to traditional production methods. However, for more stringent requirements, the innate density difference between the core-shell solution of the double-emulsion droplet template shall result in the wall thickness heterogeneity of the hollow microsphere, which will lead to unfavorable mechanical performance deviations. To clarify the specific mechanical response of microfluidics-derived hollow silica microspheres with varying eccentricities, a hybrid method combining experimental nanoindentation and a finite element method (FEM) simulation was proposed. The difference in eccentricity can determine the specific mechanical response of hollow microspheres during nanoindentation, including crack initiation and the evolution process, detailed fracture modes, load-bearing capacity, and energy dissipation capability, which should shed light on the necessity of optimizing the concentricity of double-emulsion droplets to improve the wall thickness homogeneity of hollow microspheres for better mechanical performance.
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Affiliation(s)
- Hao Wu
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Juzheng Chen
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
- Nano-Manufacturing Laboratory (NML), City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Tianyi Jiang
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Wenlong Wu
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Ming Li
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Shanguo Zhang
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Ziyong Li
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
- Nano-Manufacturing Laboratory (NML), City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Haitao Ye
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
- Nano-Manufacturing Laboratory (NML), City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Mengya Zhu
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Jingzhuo Zhou
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Yang Lu
- Nano-Manufacturing Laboratory (NML), City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR 999077, China
| | - Hongyuan Jiang
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
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2
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Ali NS, Alismaeel ZT, Majdi HS, Salih HG, Abdulrahman MA, Cata Saady NM, Albayati TM. Modification of SBA-15 mesoporous silica as an active heterogeneous catalyst for the hydroisomerization and hydrocracking of n-heptane. Heliyon 2022; 8:e09737. [PMID: 35756106 PMCID: PMC9218147 DOI: 10.1016/j.heliyon.2022.e09737] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/08/2022] [Accepted: 06/13/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, a mesoporous SBA-15 silica catalyst was prepared and modified with encased 1% platinum (Pt) metal nanoparticles for the hydrocracking and hydroisomerization of n-heptane in a heterogeneous reaction. The textural and structural characteristics of the nanostructured silica, including both encased and non-encased nanoparticles, were measured using small-angle X-ray diffraction (XRD), nitrogen adsorption-desorption porosimetry, Brunauer–Emmett–Teller (BET) surface area analysis, Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Catalytic testing was carried out in a plug-flow reactor under highly controlled operating conditions involving the reactant flow rate, pressure, and temperature. Gas chromatography was used to analyze the species as they left the reactor. The results demonstrated that 1% Pt/SBA-15 has a high n-heptane conversion activity (approximately 85%). Based on the results of this experimental work, there is no selectivity in the SBA-15 catalysts for isomerization products because they are inactive at the relatively low temperature that is essential for hydroisomerization. On the other hand, the SBA-15 catalysts have a considerable selectivity for products that have cracks, owing to their ability to withstand extremely high temperatures (300–400 °C) as well as the availability of Lewis acid sites within the catalyst structure.
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Affiliation(s)
- Nisreen S Ali
- Mustansiriyah University, College of Engineering, Materials Engineering Department Baghdad-Iraq, Iraq
| | - Ziad T Alismaeel
- Department of Biochemical Engineering, Al-Khwarizmi College of Engineering, University of Baghdad, Al-Jadryah, 47008, Baghdad, Iraq
| | - Hasan Sh Majdi
- Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babylon 51001, Iraq
| | - Hussein G Salih
- Department of Chemical Engineering, University of Technology- Iraq, 52 Alsinaa St., P.O. Box 35010, Baghdad, Iraq
| | - Mahir A Abdulrahman
- Department of Chemical Engineering, University of Technology- Iraq, 52 Alsinaa St., P.O. Box 35010, Baghdad, Iraq
| | - Noori M Cata Saady
- Department of Civil Engineering, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Talib M Albayati
- Department of Chemical Engineering, University of Technology- Iraq, 52 Alsinaa St., P.O. Box 35010, Baghdad, Iraq
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Design of Water-Tolerant Solid Acids: A Trade-Off Between Hydrophobicity and Acid Strength and their Catalytic Performance in Esterification. CATALYSIS SURVEYS FROM ASIA 2021. [DOI: 10.1007/s10563-021-09334-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hu J, Wang H, Yang Y, Li Y, Wu QH. A highly conductive quasi-solid-state electrolyte based on helical silica nanofibers for lithium batteries. RSC Adv 2021; 11:33858-33866. [PMID: 35497275 PMCID: PMC9042385 DOI: 10.1039/d1ra06803b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 10/13/2021] [Indexed: 11/21/2022] Open
Abstract
The replacement of flammable liquid electrolytes by inorganic solid ones is considered the most effective approach to enhancing the safety of Li batteries. However, solid electrolytes usually suffer from low ionic conductivity and poor rate capability. Here we report a unique quasi-solid-state electrolyte based on an inorganic matrix composed of helical tubular silica nanofibers (HSNFs) derived from the self-assembly of chiral low-molecular-weight amphiphiles. The HSNFs/ionic liquid quasi-solid-state electrolyte has high thermal stability (up to ∼370 °C) and good ionic conductivity (∼3.0 mS cm−1 at room temperature). When tested as the electrolyte in a LiFePO4/Li cell, excellent rate capability and good cycling stability are demonstrated, suggesting that it has potential be the electrolyte for a new generation of safer Li batteries. A quasi-solid-state electrolyte of high-ionic conductivity is constructed from an inorganic matrix composed of helical silica nanofibers (HSNFs) derived from the self-assembly of chiral gelators.![]()
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Affiliation(s)
- Jiemei Hu
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Haoran Wang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Yonggang Yang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Yi Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Qi-hui Wu
- College of Mechanical and Energy Engineering, Xiamen Key Lab of Marine Corrosion and Smart Protective Materials, Jimei University, Xiamen 361021, China
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5
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Soares SF, Fernandes T, Daniel-da-Silva AL, Trindade T. The controlled synthesis of complex hollow nanostructures and prospective applications †. Proc Math Phys Eng Sci 2019; 475:20180677. [PMID: 31105450 PMCID: PMC6501658 DOI: 10.1098/rspa.2018.0677] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 02/26/2019] [Indexed: 12/12/2022] Open
Abstract
Functionality in nanoengineered materials has been usually explored on structural and chemical compositional aspects of matter that exist in such solid materials. It is well known that the absence of solid matter is also relevant and the existence of voids confined in the nanostructure of certain particles is no exception. Indeed, over the past decades, there has been great interest in exploring hollow nanostructured materials that besides the properties recognized in the dense particles also provide empty spaces, in the sense of condensed matter absence, as an additional functionality to be explored. As such, the chemical synthesis of hollow nanostructures has been driven not only for tailoring the size and shape of particles with well-defined chemical composition, but also to achieve control on the type of hollowness that characterize such materials. This review describes the state of the art on late developments concerning the chemical synthesis of hollow nanostructures, providing a number of examples of materials obtained by distinct strategies. It will be apparent by reading this progress report that the absence of solid matter determines the functionality of hollow nanomaterials for several technological applications.
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Affiliation(s)
- Sofia F Soares
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3801-193 Aveiro, Portugal
| | - Tiago Fernandes
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3801-193 Aveiro, Portugal
| | - Ana L Daniel-da-Silva
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3801-193 Aveiro, Portugal
| | - Tito Trindade
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3801-193 Aveiro, Portugal
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6
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Li L, Yang D, Zhao Z, Song Y, Zhao L, Liu R, Liu G. Boron Tetrafluoride Anion Bonding Dual Active Species Within a Large-Pore Mesoporous Silica for Two-Step Successive Organic Transformaion to Prepare Optically Pure Amino Alcohols. Front Chem 2018; 6:272. [PMID: 30035110 PMCID: PMC6043685 DOI: 10.3389/fchem.2018.00272] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/18/2018] [Indexed: 11/29/2022] Open
Abstract
Development of a simple and easy handing process for preparation of multifunctional heterogenous catalysts and exploration of their applications in sequential organic transformation are of great significance in heterogeneous asymmetric catalysis. Herein, through the utilization of a BF4- anion–bonding strategy, we anchor conveniently both organic bases and chiral ruthenium complex into the nanopores of Me-FDU−12, fabricating a Lewis base/Ru bifunctional heterogeneous catalyst. As we envisaged, cyclic amine as a Lewis base promotes an intermolecular aza–Michael addition between enones and arylamines, affording γ-secondary amino ketones featuring with aryl motif, whereas ruthenium/diamine species as catalytic promoter boosts an asymmetric transfer hydrogenation of γ-secondary amino ketones to γ-secondary amino alcohols. As expected, both enhance synergistically the aza–Michael addition/asymmetric transfer hydrogenation one–pot enantioselective organic transformation, producing chiral γ-secondary amino alcohols with up to 98% enantioselectivity. Unique features, such as operationally simple one–step synthesis of heterogeneous catalyst, homo–like catalytic environment as well as green sustainable process make this heterogeneous catalyst an attracting in a practical preparation of optically pure pharmaceutical intermediates of antidepressants.
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Affiliation(s)
- Liang Li
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Dongfeng Yang
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Zhongrui Zhao
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Yongkang Song
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Lei Zhao
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Rui Liu
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
| | - Guohua Liu
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China
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7
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Adhikari C, Mishra A, Nayak D, Chakraborty A. Drug delivery system composed of mesoporous silica and hollow mesoporous silica nanospheres for chemotherapeutic drug delivery. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.03.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Yu L, Hu H, Wu HB, Lou XWD. Complex Hollow Nanostructures: Synthesis and Energy-Related Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 28092123 DOI: 10.1002/adma.201604563] [Citation(s) in RCA: 306] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 10/07/2016] [Indexed: 05/04/2023]
Abstract
Hollow nanostructures offer promising potential for advanced energy storage and conversion applications. In the past decade, considerable research efforts have been devoted to the design and synthesis of hollow nanostructures with high complexity by manipulating their geometric morphology, chemical composition, and building block and interior architecture to boost their electrochemical performance, fulfilling the increasing global demand for renewable and sustainable energy sources. In this Review, we present a comprehensive overview of the synthesis and energy-related applications of complex hollow nanostructures. After a brief classification, the design and synthesis of complex hollow nanostructures are described in detail, which include hierarchical hollow spheres, hierarchical tubular structures, hollow polyhedra, and multi-shelled hollow structures, as well as their hybrids with nanocarbon materials. Thereafter, we discuss their niche applications as electrode materials for lithium-ion batteries and hybrid supercapacitors, sulfur hosts for lithium-sulfur batteries, and electrocatalysts for oxygen- and hydrogen-involving energy conversion reactions. The potential superiorities of complex hollow nanostructures for these applications are particularly highlighted. Finally, we conclude this Review with urgent challenges and further research directions of complex hollow nanostructures for energy-related applications.
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Affiliation(s)
- Le Yu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Han Hu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Hao Bin Wu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
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9
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Xia X, Meng J, Wu H, Cheng T, Liu G. Integration of multiple active sites on large-pore mesoporous silica for enantioselective tandem reactions. Chem Commun (Camb) 2017; 53:1638-1641. [PMID: 28097273 DOI: 10.1039/c6cc09008g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Facile construction of a multifunctional heterogeneous catalyst through the assembly of Au/carbene and chiral ruthenium/diamine dual complexes in large-pore mesoporous silica was developed. This enables an efficient one-pot hydration-asymmetric transfer hydrogenation enantioselective tandem reaction of haloalkynes, affording chiral halohydrins with up to 99% enantioselectivity. Combined multifunctionalities, such as substrate-promoted silanol-functionality, BF4- anion-bonding gold/carbene and covalent-bonding chiral ruthenium/diamine active centers, contributed cooperatively to the catalytic performance.
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Affiliation(s)
- Xuelin Xia
- Key Laboratory of Resource Chemistry of Ministry of Education, Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
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10
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Wang X, Feng J, Bai Y, Zhang Q, Yin Y. Synthesis, Properties, and Applications of Hollow Micro-/Nanostructures. Chem Rev 2016; 116:10983-1060. [DOI: 10.1021/acs.chemrev.5b00731] [Citation(s) in RCA: 1044] [Impact Index Per Article: 130.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - Qiao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, People’s Republic of China
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11
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Abstract
The design, fabrication, performance and applications of hierarchical semiconductor photocatalysts are thoroughly reviewed and apprised.
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Affiliation(s)
- Xin Li
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- P. R. China
- Key Laboratory of Energy Plants Resource and Utilization
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- P. R. China
- Department of Physics
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry
- Kent State University
- Kent
- USA
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12
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Liu J, Yang Q, Li C. Towards efficient chemical synthesis via engineering enzyme catalysis in biomimetic nanoreactors. Chem Commun (Camb) 2015. [PMID: 26208044 DOI: 10.1039/c5cc04590h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biocatalysis with immobilized enzymes as catalysts holds enormous promise in developing more efficient and sustainable processes for the synthesis of fine chemicals, chiral pharmaceuticals and biomass feedstocks. Despite the appealing potentials, nowadays the industrial-scale application of biocatalysts is still quite modest in comparison with that of traditional chemical catalysts. A critical issue is that the catalytic performance of enzymes, the sophisticated and vulnerable catalytic machineries, strongly depends on their intracellular working environment; however the working circumstances provided by the support matrix are radically different from those in cells. This often leads to various adverse consequences on enzyme conformation and dynamic properties, consequently decreasing the overall performance of immobilized enzymes with regard to their activity, selectivity and stability. Engineering enzyme catalysis in support nanopores by mimicking the physiological milieu of enzymes in vivo and investigating how the interior microenvironment of nanopores imposes an influence on enzyme behaviors in vitro are of paramount significance to modify and improve the catalytic functions of immobilized enzymes. In this feature article, we have summarized the recent advances in mimicking the working environment and working patterns of intracellular enzymes in nanopores of mesoporous silica-based supports. Especially, we have demonstrated that incorporation of polymers into silica nanopores could be a valuable approach to create the biomimetic microenvironment for enzymes in the immobilized state.
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Affiliation(s)
- Jia Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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13
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Li Y, Yi J, Kruk M. Tuning of the temperature window for unit-cell and pore-size enlargement in face-centered-cubic large-mesopore silicas templated by swollen block copolymer micelles. Chemistry 2015; 21:12747-54. [PMID: 26178137 DOI: 10.1002/chem.201500189] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Indexed: 11/06/2022]
Abstract
The unit-cell size and pore diameter as functions of temperature are investigated in the syntheses of FDU-12 silicas with face-centered cubic structure templated by Pluronic (PEO-PPO-PEO) block copolymer micelles swollen by toluene. The temperature range in which the unit-cell size and pore size strongly increase as temperature decreases is correlated with the critical micelle temperature (CMT) of the surfactant. While Pluronic F127 affords a wide range of unit-cell parameters (28-51 nm) and pore diameters (16-32 nm), it renders moderately enlarged pore sizes at 25 °C. The use of Pluronic F108 with higher CMT affords FDU-12 with very large unit-cell size (∼49 nm) and large pore diameter (27 nm) at 23 °C. Large unit-cell size (40-41 nm) and pore size (22 nm) were obtained even at 25 °C. The application of Pluronics F87 and F88 with much smaller molecular weights and higher CMTs also allows one to synthesize FDU-12 with quite large unit-cell parameters and pore sizes at room temperature. The present work demonstrates that one can judiciously select Pluronic surfactants with appropriate CMT to shift the temperature range in which the pore diameter is readily tunable.
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Affiliation(s)
- Yingyu Li
- Department of Chemistry, College of Staten Island and Graduate Center, City University of New York, 2800 Victory Boulevard, Staten Island, New York 10314 (USA).,Current address: Agilent Technologies, 2850 Centerville Rd, Wilmington, DE 19808 (USA)
| | - Jinhui Yi
- Department of Chemistry, College of Staten Island and Graduate Center, City University of New York, 2800 Victory Boulevard, Staten Island, New York 10314 (USA)
| | - Michal Kruk
- Department of Chemistry, College of Staten Island and Graduate Center, City University of New York, 2800 Victory Boulevard, Staten Island, New York 10314 (USA).
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Zhang J, Bai Y, Sun XG, Li Y, Guo B, Chen J, Veith GM, Hensley DK, Paranthaman MP, Goodenough JB, Dai S. Superior Conductive Solid-like Electrolytes: Nanoconfining Liquids within the Hollow Structures. NANO LETTERS 2015; 15:3398-402. [PMID: 25844598 DOI: 10.1021/acs.nanolett.5b00739] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The growth and proliferation of lithium (Li) dendrites during cell recharge are currently unavoidable, which seriously hinders the development and application of rechargeable Li metal batteries. Solid electrolytes with robust mechanical modulus are regarded as a promising approach to overcome the dendrite problems. However, their room-temperature ionic conductivities are usually too low to reach the level required for normal battery operation. Here, a class of novel solid electrolytes with liquid-like room-temperature ionic conductivities (>1 mS cm(-1)) has been successfully synthesized by taking advantage of the unique nanoarchitectures of hollow silica (HS) spheres to confine liquid electrolytes in hollow space to afford high conductivities (2.5 mS cm(-1)). In a symmetric lithium/lithium cell, the solid-like electrolytes demonstrate a robust performance against the Li dendrite problem, preventing the cell from short circuiting at current densities ranging from 0.16 to 0.32 mA cm(-2) over an extended period of time. Moreover, the high flexibility and compatibility of HS nanoarchitectures, in principle, enables broad tunability to choose desired liquids for the fabrication of other kinds of solid-like electrolytes, such as those containing Na(+), Mg(2+), or Al(3+) as conductive media, providing a useful alternative strategy for the development of next generation rechargeable batteries.
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Affiliation(s)
| | - Ying Bai
- ∇Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng 475004, People's Republic of China
| | | | | | - Bingkun Guo
- ∥Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | | | | | | | | | - John B Goodenough
- ∥Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
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15
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Wang M, Zheng D, Ye M, Zhang C, Xu B, Lin C, Sun L, Lin Z. One-dimensional densely aligned perovskite-decorated semiconductor heterojunctions with enhanced photocatalytic activity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1436-1442. [PMID: 25363306 DOI: 10.1002/smll.201402692] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 09/22/2014] [Indexed: 06/04/2023]
Abstract
By using one-dimensional rutile TiO(2) nanorod arrays as the structure-directing scaffold as well as the TiO(2) source to two consecutive hydrothermal reactions, densely aligned SrTiO(3) -modified rutile TiO(2) heterojunction photocatalysts are crafted for the first time. The first hydrothermal processing yielded nanostructured rutile TiO(2) with the hollow openings on the top of nanorods (i.e., partially etched rutile TiO(2) nanorod arrays; denoted PE-TNRAs). The subsequent second hydrothermal treatment in the presence of Sr(2+) transforms the surface of partially etched rutile TiO(2) nanorods into SrTiO(3) nanoparticles via the concurrent dissolution of TiO(2) and precipitation of SrTiO(3) while retaining the cylindrical shape (i.e., forming SrTiO(3) -decorated rutile TiO(2) composite nanorods; denoted STO-TNRAs). The structural and composition characterizations substantiate the success in achieving STO-TNRA nanostructures. In comparison to PE-TNRAs, STO-TNRA photocatalysts exhibit higher photocurrents and larger photocatalytic degradation rates of methylene blue (3.21 times over PE-TNRAs) under UV light illumination as a direct consequence of improved charge carrier mobility and enhanced electron/hole separation. Such 1D perovskite-decorated semiconductor nanoarrays are very attractive for optoelectronic applications in photovoltaics, photocatalytic hydrogen production, among other areas.
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Affiliation(s)
- Mengye Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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16
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Kim YH, Kang H, Park S, Park AR, Lee YM, Rhee DK, Han S, Chang H, Ryu DY, Yoo PJ. Multiscale porous interconnected nanocolander network with tunable transport properties. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7998-8003. [PMID: 25348198 DOI: 10.1002/adma.201402436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 08/24/2014] [Indexed: 06/04/2023]
Abstract
A nanocolander network is developed by embedding mesoporous block copolymers inside the structural frame of a macroporous inverse-opal structure. Spontaneously formed macroconduits interconnecting the macropores are utilized as internal bypasses for enhancing the bulk transport properties. A demonstrative application for the membrane of the nanocolander network is of perfect size-selectivity for nanoparticle separation without compromising the high permeability of the transporting medium.
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Affiliation(s)
- Young Hun Kim
- School of Chemical Engineering, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, Republic of Korea
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Zhang J, Chai S, Qiao Z, Mahurin SM, Chen J, Fang Y, Wan S, Nelson K, Zhang P, Dai S. Porous Liquids: A Promising Class of Media for Gas Separation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409420] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jinshui Zhang
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Song‐Hai Chai
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Zhen‐An Qiao
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Shannon M. Mahurin
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Jihua Chen
- Center for Nanophase Materials Sciences and Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Youxing Fang
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996 (USA)
| | - Shun Wan
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Kimberly Nelson
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Pengfei Zhang
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
| | - Sheng Dai
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996 (USA)
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Zhang J, Chai SH, Qiao ZA, Mahurin SM, Chen J, Fang Y, Wan S, Nelson K, Zhang P, Dai S. Porous liquids: a promising class of media for gas separation. Angew Chem Int Ed Engl 2014; 54:932-6. [PMID: 25404583 DOI: 10.1002/anie.201409420] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Indexed: 11/07/2022]
Abstract
A porous liquid containing empty cavities has been successfully fabricated by surface engineering of hollow structures with suitable corona and canopy species. By taking advantage of the liquid-like polymeric matrices as a separation medium and the empty cavities as gas transport pathway, this unique porous liquid can function as a promising candidate for gas separation. Moreover, such a facile synthetic strategy can be further extended to the fabrication of other types of nanostructure-based porous liquid, opening up new opportunities for preparation of porous liquids with attractive properties for specific tasks.
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Affiliation(s)
- Jinshui Zhang
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (USA)
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19
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Albayati TMN, Wilkinson SE, Garforth AA, Doyle AM. Heterogeneous Alkane Reactions over Nanoporous Catalysts. Transp Porous Media 2014. [DOI: 10.1007/s11242-014-0336-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Guo S, Zhang H, Huang L, Guo Z, Xiong G, Zhao J. Porous material-immobilized iodo-Bodipy as an efficient photocatalyst for photoredox catalytic organic reaction to prepare pyrrolo[2,1-a]isoquinoline. Chem Commun (Camb) 2014; 49:8689-91. [PMID: 23949367 DOI: 10.1039/c3cc44486d] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Iodo-Bodipy immobilized on porous silica was used as an efficient recyclable photocatalyst for photoredox catalytic tandem oxidation-[3+2] cycloaddition reactions of tetrahydroisoquinoline with N-phenylmaleimides to prepare pyrrolo[2,1-a]isoquinoline.
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Affiliation(s)
- Song Guo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, E-208 West Campus, Dalian University of Technology, Dalian 116024, P. R. China.
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21
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Albayati TM, Doyle AM. SBA-15 Supported Bimetallic Catalysts for Enhancement Isomers Production During n-Heptane Decomposition. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2014. [DOI: 10.1515/ijcre-2013-0120] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Santa Barbara Amorphous (SBA)-15 supported 1% (Pt–Ni), 1% (Pt–Co) and 1% (Ni–Co) bimetallic catalysts in a heterogeneous reaction for enhancement hydroisomerization and hydrocracking production during reforming or decomposition of n-heptane. The structural and textural features of the nanoporous silicas, both with and without encapsulated nanoparticles, were characterized using small-angle X-ray diffraction, scanning electron microscopy, EDAX, nitrogen adsorption–desorption porosimetry (Brunauer–Emmett–Teller) surface area analysis, Fourier-transform infrared spectroscopy and transmission electron microscopy. The catalytic performance was evaluated at 250–400°C under atmospheric pressure in a plug-flow reactor in a catalyst testing rig under tightly controlled conditions of temperature, reactant flow rate and pressure. The species leaving the reactor were analysed by Gas Chromatography. The results show that 1% (Pt–Ni)/SBA-15, 1% (Pt–Co)/SBA-15 and 1% (Ni–Co)/SBA-15 had a high activity for conversion of n-heptane (around 85%). The selectivity of isomerization is not high, so further studies have to be carried out in the future.
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22
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Pan A, Wu HB, Yu L, Lou XWD. Template-Free Synthesis of VO2Hollow Microspheres with Various Interiors and Their Conversion into V2O5for Lithium-Ion Batteries. Angew Chem Int Ed Engl 2013; 52:2226-30. [DOI: 10.1002/anie.201209535] [Citation(s) in RCA: 248] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Indexed: 11/11/2022]
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23
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Pan A, Wu HB, Yu L, Lou XWD. Template-Free Synthesis of VO2Hollow Microspheres with Various Interiors and Their Conversion into V2O5for Lithium-Ion Batteries. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209535] [Citation(s) in RCA: 175] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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24
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Tan L, Liu T, Li L, Liu H, Wu X, Gao F, He X, Meng X, Chen D, Tang F. Uniform double-shelled silica hollow spheres: acid/base selective-etching synthesis and their drug delivery application. RSC Adv 2013. [DOI: 10.1039/c3ra40733k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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25
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Wang P, Bai S, Zhao J, Su P, Yang Q, Li C. Bifunctionalized hollow nanospheres for the one-pot synthesis of methyl isobutyl ketone from acetone. CHEMSUSCHEM 2012; 5:2390-2396. [PMID: 23132691 DOI: 10.1002/cssc.201200383] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Indexed: 06/01/2023]
Abstract
Pd-doped propyl sulfonic acid-functionalized hollow nanospheres proved to be efficient bifunctionalized catalysts for the one-pot synthesis of methyl isobutyl ketone (MIBK) from acetone and hydrogen in liquid phase. These hollow nanospheres exhibited a higher activity than their bulk mesoporous counterparts (SBA-15 or FDU-12), mainly due to the short diffusion resistance of hollow nanospheres. Hollow nanospheres with silica frameworks showed higher activity and selectivity for MIBK than those with ethane-bridged frameworks, suggesting that hollow nanospheres with hydrophilic surface properties favor the formation of MIBK. This is probably due to the increased affinity of the hydrophilic surface towards acetone and its decreased affinity towards MIBK, which precludes deep condensation of MIBK with acetone. Under optimal conditions, up to 90 % selectivity for MIBK can be obtained with conversions of acetone as high as 43 %. This result is among the best reported so far for mesoporous silica-based catalysts. The control/fine-tuning of morphology and surface properties provides an efficient strategy for improving the catalytic performance of solid catalysts.
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Affiliation(s)
- Peng Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China
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Qiao ZA, Huo Q, Chi M, Veith GM, Binder AJ, Dai S. A "ship-in-a-bottle" approach to synthesis of polymer dots@silica or polymer dots@carbon core-shell nanospheres. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:6017-21. [PMID: 22976113 DOI: 10.1002/adma.201202620] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 07/24/2012] [Indexed: 05/24/2023]
Abstract
A "ship-in-a-bottle" approach to the entrapment and assembly of nanometer-sized polymer dots in hollow silica or carbon nanospheres with size-selective micropores is presented. This new type of core-shell nanospheres exhibits excellent photoluminescence properties and significant adsorption capabilities for transition-metal ions.
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Affiliation(s)
- Zhen-An Qiao
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
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