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A purely green approach to low-cost mass production of zeolitic imidazolate frameworks

Green Energy & Environment 2023年第3期8卷 775-784页

作者： Hai Li Wan Chen Bei Liu Mingke Yang Zixuan Huang Changyu Sun Chun Deng Dapeng Cao Guangjin Chen State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China State Key Lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China

Although zeolitic imidazolate frameworks(ZIFs)have bright prospects in wide fields like gas storage/separation,catalysis and medicine,etc.,their large-scale applications are bottlenecked by the absence of their low-cost commercial production technique.Here,we report an uncon ventional method suitable for environmentally friendly and low-cost mass-production of ZIFs.In this method,taking the synthesis of ZIF-8 as an example,ZnO was used instead of Zn(NO_(3))_(2) in traditional solvent synthesis methods and CO_(2) was introduced to dissolve ZnO in aqueous solution of 2-methylimidazole(HMeim)and form water soluble salt([ZnMeim]^(+)[MeimCOO]^(-))at room temperature.Then,by removing CO_(2) through heating or vacuuming,Meim-ions are produced and instantaneously assemble with[ZnMeim]^(+)s to generate ZIF-8 without any by product.Due to the absence of strong acid anions(such as NO^(-)_(3) and Cl^(-) et al.)in solution,the washing of filter cake required in the conventional approaches could be omitted and the filtrate containing only water and HMeim could be reused completely.This method is really green as no waste gas or liquid generates because CO_(2) and water could be recycled perfectly.It overcomes almost all bottlenecks occurred in commercial production of ZIF-8 when using traditional methods.A pilot plant was established for mass-production of ZIF-8 and hundreds kilograms of ZIF-8 was produced,which indicates that the new method is not only environmentally friendly but also low cost and commercial accessibility.It is expected that the new method would open an avenue for commercial applications of ZIFs.

关键词： Zeolitic imidazolate frameworks mass production Metal oxide Carbon dioxide Environmentally friendly

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mass production of 2D materials by intermediate-assisted grinding exfoliation

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National Science Review 2020年第2期7卷 324-332页

作者： Chi Zhang Junyang Tan Yikun Pan Xingke Cai Xiaolong Zou Hui-Ming Cheng Bilu Liu Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School Tsinghua University Advanced Technology Institute University of Surrey Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences

The scalable and high-efficiency production of 2D materials is a prerequisite to their commercial use.Currently, only graphene and graphene oxide can be produced on a ton scale, and the inability to produce other 2D materials on such a large scale hinders their technological applications. Here we report a grinding exfoliation method that uses micro-particles as force intermediates to resolve applied compressive forces into a multitude of small shear forces, inducing the highly efficient exfoliation of layer materials. The method, referred to as intermediate-assisted grinding exfoliation(iMAGE), can be used for the large-scale production of many 2D materials. As an example, we have exfoliated bulk h-BN into 2D h-BN with large flake sizes, high quality and structural integrity, with a high exfoliation yield of 67%, a high production rate of 0.3 g hand a low energy consumption of 3.01 × 10~6 J g. The production rate and energy consumption are one to two orders of magnitude better than previous results. Besides h-BN, this i MAGE technology has been used to exfoliate various layer materials such as graphite, black phosphorus, transition metal dichalcogenides, and metal oxides, proving its universality. Molybdenite concentrate, a natural low-cost and abundant mineral, was used as a demo for the large-scale exfoliation production of 2D MoSflakes. Our work indicates the huge potential of the i MAGE method to produce large amounts of various 2D materials, which paves the way for their commercial application.

关键词： 2D materials hexagonal boron nitrides transition metal dichalcogenides intermediary-assisted grinding exfoliation mass production

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mass production of two-dimensional materials beyond graphene and their applications

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Nano Research 2021年第6期14卷 1583-1597页

作者： Liusi Yang Wenjun Chen Qiangmin Yu Bilu Liu Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen Institute&Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China

Two-dimensional(2D)materials are promising candidates in wide applications including energy storage and conversion,sensors,flexible devices,etc.The low-cost production of 2D materials with large quantities and demanded quality is the precondition for their commercial uses.For graphene and its derivatives,relatively mature techniques have been established for their scalable preparation and industrial applications.Whereas the mass production of 2D materials beyond graphene is still in its early age and it lacks a summary on this topic.This review systematically describes the state-of-the-art approaches for high-yield preparation of 2D materials beyond graphene,including“top-down”exfoliation and“bottom-up”synthetic approaches.In particular,each method is discussed from the perspectives of its principle,optimization attempts,characteristics of the obtained 2D materials,and its scalability potential.The applications that require massively-produced 2D materials are highlighted,including electrocatalysis,batteries,supercapacitors,mechanical and chemical sensors,as well as electromagnetic interference shielding and microwave absorption devices.Finally,we propose the challenges and opportunities for scalable preparation and commercial applications of 2D materials.

关键词： two-dimensional(2D)materials mass production “top-down”exfoliation “bottom-up”synthesis applications

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mass production and industrial applications of graphene materials

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National Science Review 2018年第1期5卷 90-101页

作者： Yanwu Zhu Hengxing Ji Hui-Ming Cheng Rodney S.Ruoff Key Laboratory of Materials for Energy Conversion Chinese Academy of Sciences& Department of Materials Science and Engineering & iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)University of Science and Technology of China Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Tsinghua-Berkeley Shenzhen Institute (TBSI) Tsinghua University Center for Multidimensional Carbon Materials (CMCM) Institute for Basic Science (IBS) Department of Chemistry and School of Materials Science Ulsan National Institute of Science and Technology

Graphene is considered a promising material for industrial application based on the intensive laboratoryscale research in the fields of physics, chemistry, materials science and engineering, and biology over the last decade. Many companies have thus started to pursue graphene materials on a scale of tons(for the flake material) or hundreds of thousands of square meters(for the film material) for industrial applications. Though the graphene industry is still in its early stages, very significant progress in mass production and certain industrial applications has become obvious. In this report, we aim to give a brief review of the mass production of graphene materials for some industrial applications and summarize some features or challenges for graphene in the marketplace.

关键词： graphene materials mass production industrial application

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MANUFACTURING AND SERVICES:FROM mass production TO mass CUSTOMIZATION

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Journal of Systems Science and Systems Engineering 2011年第2期20卷 129-154页

作者： James M.TIEN College of Engineering University of MiamiCoral Gables

Manufacturing and services constitute two of the five sectors of every country＇s economy;depending on the maturity of the economy,they are-in terms of employment-typically the two largest sectors.The outputs or products of an economy can also be divided into goods products（due to manufacturing,construction,agriculture and mining） and services products.To date,the goods and services products have,for the most part,been mass produced;it is the premise of this paper that recent technological advances-including flexible manufacturing,cloud computing,nanotechnology and smart sensing-can better enable the transformation from mass production to mass customization.We regard mass customization as the simultaneous and real time management of supply and demand chains,based on a taxonomy that can be defined in terms of its underpinning component and management foci.From a components perspective,we first consider the value chain of supplier,manufacturer,assembler,retailer,and customer,and then develop a consistent set of definitions for supply and demand chains based on the location of the customer order penetration point.From a management perspective,we classify the methods that are employed in the management of these chains,based on whether supply and/or demand are flexible or fixed.Interestingly,our management taxonomy highlights a very critical research area at which both supply and demand are flexible,thus manageable.Simultaneous management of supply and demand chains sets the stage for mass customization which is concerned with meeting the needs of an individualized customer market.Simultaneous and real time management of supply and demand chains set the stage for real time mass customization（e.g.,wherein a tailor first laser scans an individual＇s upper torso and then delivers a uniquely fitted jacket within a reasonable period,while the individual is waiting）.The benefits of real time mass customization cannot be over-stated as goods and services become indistinguishable and are co-produced-as ＂servgoods＂-in real time,

关键词： Value chain supply chain demand chain taxonomy real time management mass production mass customization manufacturing goods services

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The mass production of Entomopathogenic Nematodes

The Mass Production of Entomopathogenic Nematodes

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International Symposium on mass production and Commercialization of Arthropod Biological Control Agents

作者： Hui-Peng Tian,Hong-Zhu Liang~*,Xue-Yan Li,Qian Chen,Shao-Hua Ning, Zheng-Rong Hou Beijing Xishan Experimental Forest Farm,Beijing,100093,China

Entomopathogenic nematode is an important class of biological insecticides,which demonstrate some unique advantages and good effect on the control of hidden pests.Based on the triangular flask culture of the Entomopathogenic nematodes,this research uses a stainless culture box,which is designed and manufactured by ourselves,to carry out solid culturing of nematodes,in order to achieve the mass production of entomopathogenic nematodes.Experiments show that the best culturing capacity is 1000g / box,and the best culturing time is 18d. Nematode culture efficiency is 12.5 times higher than the triangular flask,with the nematode infection rates unchanged.With this method,not only the culturing amount of nematodes is increased,but also the labor cost is saved,which will help promote the use of entomopathogenic nematodes.

关键词： Entomopathogenic nematodes culture vessel solid culture mass production

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Green, sustainable and massive synthesis of sodium vanadate nanowires toward industrialization

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Progress in Natural Science:Materials International 2023年第6期33卷 918-923页

作者： Wei Ni ANSTEEL Research Institute of Vanadium & Titanium (Iron & Steel) State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization

One-dimensional(1D) layered materials combine the advantages of layered materials and 1D nanomaterials,which has attracted intense interest not only in the academic research but also in the industrial application.Layered sodium vanadate nanowires have received incremental attention due to the high capacity and enhanced electrical conductivity for promising advanced energy storage and conversion. However, the mass production of these 1D layered vanadium vanadates(1D NVO) are still of great challenge and the further scalable application in energy storage and conversion systems are hampered. Herein, we developed a facile, non-hydrothermal, green synthesis strategy for scalable, mass production of layered vanadium vanadate nanowires and their assemblies such as membranes, blocks, grains, powders toward industrial scale. It will pave a way for the industrial production of 1D inorganic materials and give a new insight into the fabrication of nanostructured materials beyond commercialized 1D/2D nanomaterials including carbon nanotubes(CNT) and layered double hydroxides(LDH).

关键词： 1D nanomaterials Barnesite Green synthesis mass production Nanowire membrane Self-assembly Sodium vanadate nanowires Vanadium-based

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Carbon dots embedded nanofiber films:Large-scale fabrication and enhanced mechanical properties

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Chinese Chemical Letters 2022年第1期33卷 304-307页

作者： Chang Liu Rui Cheng Jiazhuang Guo Ge Li He Li Hong-Gang Ye Zhi-Bin Liang Cai-Feng Wang Su Chen State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineeringand Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer MaterialsNanjing Tech UniversityNanjing 210009China

Valuable application prospects and large-scale production technologies are powerful driving forces for the development of materials science.Carbon dots(CDs)are a kind of promising carbon-based fluorescent nanomaterials,which possess wide application prospects based and even beyond the fluorescence properties.Herein,we report the fast and high-yield synthesis of CDs and the large-scale preparation of fluorescent nanofiber films with enhanced mechanical properties.CDs were prepared from magnetic hyperthermia treatment of citric acid and carbamide,with the output of 25.37 g in a single batch.The asprepared CDs exhibit a high absolute photoluminescence(PL)quantum yield(QY)of 67%and wonderful dispersibility in polar solvents.Then,solution blow spinning of CDs and polymer matrixes of alcohol soluble polyurethane(APU)and polyacrylonitrile(PAN)led to large-area fluorescent CDs-embedded nanofiber films,APU/CDs(size:120 cm×18 cm)and PAN/CDs(size:120 cm×22 cm),respectively.The resultant large-area APU/CDs and PAN/CDs nanofiber films have dramatically enhanced mechanical properties,to show integrated improvement of tensile strength and elongation.

关键词： Carbon dots mass production Solution blow spinning Nanofiber Mechanical properties

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RF design and test of a high-directivity high-power waveguide directional coupler for the HEPS

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Radiation Detection Technology and Methods 2022年第2期6卷 137-142页

作者： Xiang He Jing-Ru Zhang Jing-Dong Liu Hua Shi Bing-Lin Deng Xu-Jian Wang Sheng-Chang Wang Nan Gan Pi-Long Tian Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China

Purpose A novel high-directivity high-power waveguide directional coupler(DC)working at 2998.8 MHz is developed for the High Energy Photon Source.It can help the phase control system to obtain a very accurate microwave signal,which is very important to minimize the beam emittance.Methods The novel reversely placed T-type coupling piece helps to obtain a high directivity.The N-type high-vacuum feedthroughs for vacuum sealing instead of the traditional ceramic plate is beneficial to holding a higher peak power.The simulation and the high-power commissioning are accomplished in the Institute of High Energy Physics(IHEP),while the fabrication and the low-power test are conducted in cooperation with the manufacturer.Results Both the single-coupler and the dual-coupler DCs are developed with a directivity of more than 35 dB while keeping the coupling factor within 60±0.5 dB.Finally,69.4%of all the fifty-two mass produced DCs have got a directivity of more than 40 dB.Conclusion:The mature manufacturing process for mass production is obtained.The novel high-directivity high-power waveguide DC can be mass produced with an actually internationally leading performance.

关键词： HEPS Directional coupler High directivity High power mass production

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The endoparasitoid Psyllaephagus arenarius benefits from ectoparasitic venom via multiparasitism with the ectoparasitoid Tamarixia lyciumi

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Insect Science 2020年第4期27卷 815-825页

作者： Peng-Xiang Wu Bao-Xu Ma Feng-Ming Wu Jing Xu Run-Zhi Zhang State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina

As solitary nymphal parasitoids of Pamtrioza sinica,the ectoparasitoid Tamarixia lyciumi and the endoparasitoid Psyllaephagus arenarius act as effective biocontrol agents.Thus,it is necessary to facilitate mass productions of both species.Despite showing an excellent parasitic ability,Ps.arenarius is often trapped fatally inside 5th-instar nymphs of Pa.sinica due to strong host immunity.To improve the emergence rate of Ps.arenarius,we evaluated whether Ps.arenarius could utilize T.lyciumi venom via multiparasitism,so the parasitism characteristics of both species were examined between separate-existence(monoparasitism only)and co-existence(mono-and multiparasitism)systems.Further,the parasitism characteristics of Ps.arenarius on venom-injected hosts with/without T.lyciumi eggs were tested to further identify the facilitator.The results showed the parasitism rate of T.lyciumi was increased while that of Ps.arenarius did not change from separate-existence to co-existence systems.The intrinsic performances of two species in monoparasitism did not differ between separate-and co-existence systems.From monoparasitism(separate-existence)to multiparasitism(co-existence),no differences were detected in the intrinsic performances of T.lyciumi,but those of Ps.arenarius were greatly improved.After T.lyciumi venom injection,the parasitism characteristics of Ps.arenarius did not differ between venom-injected hosts with T.lyciumi eggs and those without,further indicating Ps.arenarius benefited from the venom of T.lyciumi females rather than T.lyciumi egg/larval secretions.Instead of negative effects,multiparasitism with ectoparasitoids improves endoparasitoids due to ectoparasitic venom.The study increases host resource utilization and provides creative ways for mass production of endoparasitoids.

关键词： biocontrol agent host resource utilization intrinsic performance mass production parasitism characteristics

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