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Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1712-2

Abstract:

● Both amorphous and crystalline silicon are completely separated from coal fly ash.

Keywords： Coal fly ash     Alkali fusion     Micro-/meso-porous Si     Zeolite MCM-48     Crystalline transformation    

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Synthesis of micro/meso porous carbon for ultrahigh hydrogen adsorption using cross-linked polyaspartic

Jun Wei, Jianbo Zhao, Di Cai, Wenqiang Ren, Hui Cao, Tianwei Tan

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 857-867 doi: 10.1007/s11705-019-1880-6

Abstract: surface area, surface topography and characteristics such as the pore size, pore size distribution, and micro/mesopores ratio are factors that determine the performance of porous carbons (PCs) in the fields of

Keywords： porous carbon     multilevel pores     polyaspartic acid     cross-linking     hydrogen adsorption    

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Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 18-32 doi: 10.1007/s11465-017-0410-9

Abstract: The miniaturization of devices in different fields requires production of micro- and nano-scale componentsThis paper reviewed the recent advances in micro- and nano-machining technologies, including micro-cutting, micro-electrical-discharge machining, laser micro-machining, and focused ion beam machining.

Keywords： micro machining     cutting     electro discharge machining (EDM)     laser machining     focused ion beam (FIB)    

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Occurrence and distribution of micro- and mesoplastics in the high-latitude nature reserve, northern

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1534-7

Abstract:

• The first study on micro(meso)plastics (MMPs) in the Liaohe River

Keywords： Microplastics     Mesoplastics     Water     Sediment     Characteristic     Risk Assessment    

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Strengthening of polysulfone membranes using hybrid mixtures of micro- and nano-scale modifiers

Peyman P. Selakjani, Majid Peyravi, Mohsen Jahanshahi, Hamzeh Hoseinpour, Ali S. Rad, Soodabeh Khalili

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 174-183 doi: 10.1007/s11705-017-1670-y

Abstract: Polysulfone (PSf) membranes were modified by either a new organic modifier (sulfonated poly(ether sulfide sulfone), SPESS) or a traditional modifier (rice hulk). These membranes were further reinforced with either multi-walled carbon nanotubes (MWCNTs) or silica nanoparticles. Having a dye rejection of 98.46%, the reinforced membranes increased more than 50% in strength but no change in solution flux was observed. The morphological and roughness studies were conducted using scanning electron microscopy and atomic force microscopy. Moreover, the PSF membranes were also characterized by differential scanning calorimetry. Modifying the membranes with organic modifier or nanofiller increases the glass transition temperature ( ). The highest and strength were observed for the PSf-SPESS-MWCNT membrane. SPESS decreases surface roughness but MWCNT increases roughness on the nanoscale. All membranes show a bimodal pore size distribution, whereas the PSf-SPESS-MWCNT membrane exhibits a relatively uniform distribution of macroscopic and microscopic pores.

Keywords： polysulfone membrane     mechanical properties     micro- and nano-modification     binary and ternary system     dye    

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Bicontinuous porous membranes with micro-nano composite structure using a facile atomization-assisted

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1268-1280 doi: 10.1007/s11705-022-2143-5

Abstract: The micro-nano composite structure can endow separation membranes with special surface properties, butBy using this method, a bicontinuous porous microfiltration membrane with robust micro-nano compositeThe formation mechanism of the micro-nano composite structure was proposed.

Keywords： atomization     nonsolvent induced phase separation     bicontinuous porous structure     micro-nano composite    

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Reconciling “Micro” and “Macro” through Meso-Science

Raffaella Ocone

Engineering 2017, Volume 3, Issue 3,   Pages 281-282 doi: 10.1016/J.ENG.2017.03.009

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Efficient CO

Yanxia Wang, Xiude Hu, Tuo Guo, Jian Hao, Chongdian Si, Qingjie Guo

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 493-504 doi: 10.1007/s11705-020-1967-0

Abstract: In this work, nitrogen-doped porous carbons (NACs) were fabricated as an adsorbent by urea modification

Keywords： porous carbon     CO2 adsorption     nitrogen-doped     adsorption mechanism     kinetics    

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Fabrication of Si-based three-dimensional microbatteries: A review

Chuang YUE, Jing LI, Liwei LIN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 459-476 doi: 10.1007/s11465-017-0462-x

Abstract:

High-performance, Si-based three-dimensional (3D) microbattery systems for powering micro/nano-electromechanicalIn this review, Si-based 3D microbatteries and related fabrication technologies, especially the productionof micro-lithium ion batteries, are reviewed and discussed in detail in order to provide guidance for

Keywords： three-dimensional (3D)     wafer-scale     Si-based anode     micro-LIBs     thin-film deposition    

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Magnetic Helical Micro- and Nanorobots: Toward Their Biomedical Applications Review

Famin Qiu, Bradley J. Nelson

Engineering 2015, Volume 1, Issue 1,   Pages 21-26 doi: 10.15302/J-ENG-2015005

Abstract:

Magnetic helical micro- and nanorobots can perform 3D navigation in various liquids with a sub-micrometerSince magnetic fields with low strengths are harmless to cells and tissues, magnetic helical micro/nanorobotsThis review provides general information on magnetic helical micro/nanorobots, including their fabrication

Keywords： magnetic helical micro/nanorobots     mobile micro/nanorobots     artificial bacterial flagella (ABFs)     functionalization    

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Digital representation of meso-geomaterial spatial distribution and associated numerical analysis of

YUE Zhongqi

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 80-93 doi: 10.1007/s11709-007-0008-0

Abstract: representation of the geomaterial distribution of different minerals, particulars, and components in the meso-scalethe proposed approach to develop the geomechanics by taking into account the geomaterial behavior at micro-scale, meso-scale and macro-scale levels.in geomechanics where actual spatial distribution and properties of materials and components at the meso-level

Keywords： homogeneous     numerical analysis     Expanded     homogenization     meso-level    

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Determination of mechanical parameters for elements in meso-mechanical models of concrete

Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 391-401 doi: 10.1007/s11709-013-0225-7

Abstract: of formulas to convert the macro-scale mechanical parameters of mortar and interface to those at the meso-scale

Keywords： concrete     meso-mechanical model     discrete element method     size effect     mechanical parameter    

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Resent progress of non-quenched and tempered steel for automotive sheet

Chen Yunbo,Ma Mingtu and Wang Guodong

Strategic Study of CAE 2014, Volume 16, Issue 2,   Pages 4-17

Abstract: research processes are presented，which include strengthening equation，solid solubility product equation of micro

Keywords： non- quenched and tempered steel     development and application     micro- alloying     strengthen principle    

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Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Strategic Study of CAE 2009, Volume 11, Issue 2,   Pages 33-35

Abstract:

Stress distribution in the third subsidence belt is presented , with great amounts of data on hydraulic fracture orientation obtained from monitoring hydraulic fracturing , and the direction of the maximum principle stress is specified . The results indicate that the third subsidence belt extends over 1 500 km from north to south , and the direction of the maximum principle stress ranges from 55° NE to 75° NE , concentrated on 65° NE , showing a stable distribution of the direction of maximum stress . The monitoring data implies that the tectonic stress direction in third subsidence belt is the combined result of South Asia Plate and Philippine Plate .

Keywords： hydraulic fracturing monitoring with micro- seismics     third subsidence belt     direction of maximumprinciple    

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Fabrication and catalytic performance of meso-ZSM-5 zeolite encapsulated ferric oxide nanoparticles for

Zhenheng Diao, Lushi Cheng, Wen Guo, Xu Hou, Pengfei Zheng, Qiuyueming Zhou

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 643-653 doi: 10.1007/s11705-020-1972-3

Abstract: An encapsulation-structured Fe O @meso-ZSM-5 (Fe@MZ5) was fabricated by confining Fe O nanoparticles(ca. 4 nm) within the ordered mesopores of hierarchical ZSM-5 zeolite (meso-ZSM-5), with ferric oleateand amphiphilic organosilane as the iron source and meso-porogen, respectively.For comparison, catalysts with Fe O (ca. 12 nm) encapsulated in intra-crystal holes of meso-ZSM-5 and

Keywords： phenol hydroxylation     encapsulation structure     structure-performance relationship     meso-ZSM-5     ferric oxide    

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Title Author Date Type Operation

Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Journal Article

Synthesis of micro/meso porous carbon for ultrahigh hydrogen adsorption using cross-linked polyaspartic

Jun Wei, Jianbo Zhao, Di Cai, Wenqiang Ren, Hui Cao, Tianwei Tan

Journal Article

Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Journal Article

Occurrence and distribution of micro- and mesoplastics in the high-latitude nature reserve, northern

Journal Article

Strengthening of polysulfone membranes using hybrid mixtures of micro- and nano-scale modifiers

Peyman P. Selakjani, Majid Peyravi, Mohsen Jahanshahi, Hamzeh Hoseinpour, Ali S. Rad, Soodabeh Khalili

Journal Article

Bicontinuous porous membranes with micro-nano composite structure using a facile atomization-assisted

Journal Article

Reconciling “Micro” and “Macro” through Meso-Science

Raffaella Ocone

Journal Article

Efficient CO

Yanxia Wang, Xiude Hu, Tuo Guo, Jian Hao, Chongdian Si, Qingjie Guo

Journal Article

Fabrication of Si-based three-dimensional microbatteries: A review

Chuang YUE, Jing LI, Liwei LIN

Journal Article

Magnetic Helical Micro- and Nanorobots: Toward Their Biomedical Applications

Famin Qiu, Bradley J. Nelson

Journal Article

Digital representation of meso-geomaterial spatial distribution and associated numerical analysis of

YUE Zhongqi

Journal Article

Determination of mechanical parameters for elements in meso-mechanical models of concrete

Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN

Journal Article

Resent progress of non-quenched and tempered steel for automotive sheet

Chen Yunbo,Ma Mingtu and Wang Guodong

Journal Article

Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Journal Article

Fabrication and catalytic performance of meso-ZSM-5 zeolite encapsulated ferric oxide nanoparticles for

Zhenheng Diao, Lushi Cheng, Wen Guo, Xu Hou, Pengfei Zheng, Qiuyueming Zhou

Journal Article