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MoS_(2)Lubricate‑Toughened MXene/ANF Composites for Multifunctional Electromagnetic Interference Shielding

Nano-Micro Letters 2025年第2期17卷 358-371页

作者： Jiaen wang Wei Ming Longfu Chen Tianliang Song Moxi Yele Hao Zhang Long yang Gegen Sarula Benliang Liang luting yan.guangsheng wang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing 100044People’s Republic of China Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China

The design and fabrication of high toughness electromagnetic interference(EMI)shielding composite films with diminished reflection are an imperative task to solve electromagnetic pollution *** MXene/ANF(aramid nanofibers)–MoS_(2)composite films with nacre-like layered structure here are fabricated after the introduction of MoS_(2)into binary MXene/ANF composite *** introduction of MoS_(2)fulfills an impressive“kill three birds with one stone”improvement effect:lubrication toughening mechanical performance,reduction in secondary reflection pollution of electromagnetic wave,and improvement in the performance of photothermal *** the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 50:50),the strain to failure and tensile strength increase from 22.1±1.7%and 105.7±6.4 MPa and to 25.8±0.7%and 167.3±9.1 MPa,*** toughness elevates from 13.0±4.1 to 26.3±0.8 MJ m^(−3)(~102.3%)*** the reflection shielding effectiveness(SE_(R))of MXene/ANF(mass ratio of 50:50)decreases~10.8%.EMI shielding effectiveness(EMI SE)elevates to 41.0 dB(8.2–12.4 GHz);After the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 60:40),the strain to failure increases from 18.3±1.9%to 28.1±0.7%(~53.5%),the SE_(R)decreases~22.2%,and the corresponding EMI SE is 43.9 *** MoS_(2)also leads to a more efficient photothermal conversion performance(~45 to~55℃).Additionally,MXene/ANF–MoS_(2)composite films exhibit excellent electric heating performance,quick temperature elevation(15 s),excellent cycle stability(2,2.5,and 3 V),and long-term stability(2520 s).Combining with excellent mechanical performance with high MXene content,electric heating performance,and photothermal conversion performance,EMI shielding ternary MXene/ANF–MoS_(2)composite films could be applied in many industrial *** work broadens how to achieve a balance between mechanical properties and versatility of composites in the case of high-function fillers.

关键词： MXene-MoS_(2) Lubrication toughening EMI shielding Photothermal conversion Electric heating performance

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Efficient synthesis of lithium rare-earth tetrafluoride nanocrystals via a continuous flow method

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Nano Research 2020年第10期13卷 2837-2846页

作者： Jinsong Sui Junyu yan Kai wang guangsheng Luo The State Key Lab of Chemical Engineering Department of Chemical EngineeringTsinghua UniersityBeijing 100084China

As an important upconversion illuminant material, LiREF4 nanocrystals were efficiently synthesized in a continuous reactor with the assistant of a new precursor solution. The employed trioctylamine solvent in the solution had a strong interaction with HF, and helped to avoid the generation of unnecessary solid components as LiF and NH4REF4 during the reaction. A silicon carbide reactor was developed to carry out the synthesis reaction, where LiYF4:Yb,Er/Ho/Tm quickly nucleated in 5 min at 300℃. The reaction time to successfully prepare 15 nm sized nanocrystals was less than 30 min, and the space-time yield of the flow synthesis method was 14.8 times that of a control group batch reaction. The prepared nanocrystals had a strong illuminant ability, which could find its use in the area of security mark printing.

关键词： lithium rare earth tetrafluoride upconversion illuminant nanocyrstal silicon carbide reactor flow chemistry

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Continuous synthesis of ultrasmall core-shell upconversion nanoparticles via a flow chemistry method

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Nano Research 2022年第2期15卷 1199-1204页

作者： Di Liu Junyu yan Kai wang Yundong wang guangsheng Luo The State Key Lab of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

A continuous synthesis method for the less than 10 nm core-shell upconversion nanoparticles was developed via coiled tube embedded flask reactors and a flow solvothermal co-participation reaction up to 300℃.Fast nucleation of hexagonal nanocrystals in less than 9 min residence time was achieved owing to the excellent heating ability of the reactors,and a two-step reaction strategy was created for the synthesis of β-NaYF4:Gd,Yb,Er/Ho/Tm@NaYF_(4) particles without intermediate purification.

关键词： sodium rare earth tetrafluoride upconversion nanoparticle core-shell structure flow chemistry synthesis

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Heterostructure Ag@WO3-x Composites with High Selectivity for Breaking Azo-bond

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Chemical Research in Chinese Universities 2018年第4期34卷 517-522页

作者： FANG Zhenxing CHEN yan wang Boran JIAO Shihui PANG guangsheng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

The heterostructure Ag@WO3-x（x=0.1 or 1） composites with high selectivity for breaking azo-bond were obtained by in situ reduction of Ag2WO4. The crystal structure and morphology of Ag@WO3-x were characterized by X-ray powder diffraction（XRD）, scanning electron microscope（SEM） and transmission electron microscope（TEM）. The residue solution of methyl orange（MO） after degradation was tested by gas chromatograph mass spectrometer （GCMS） to analyze the exact components. The results indicate that the products after degradation are N,N-dimethylaniline, N,N-dimethyl-p-phenylenediamine and sulfanilic acid. This is caused by specific breaking of azo-bond in MO. The azo-bond breaking of MO by Ag@WO3-x could occur in dark without any light illumination. Therefore, we proposed a possible mechanism for this azo-bond breaking reaction based on the reaction condition and results.

关键词： Heterostructure In situ reduction Azo-bond

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Response of leaf carbon metabolism and dry matter accumulation to density and row spacing in two rapeseed(Brassica napus L.)genotypes with differing plant architectures

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The Crop Journal 2022年第3期10卷 680-691页

作者： Jie Kuai Xiaoyong Li Jianli Ji Zhen Li yan Xie Bo wang guangsheng Zhou MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the yangtze River College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina Oil Crops Research Institute of Chinese Academy of Agricultural Sciences Wuhan 430070HubeiChina College of Agriculture Jinhua Polytechni3Jinhua 321007ZhejiangChina Haimen Municipal Guidance Station for Crop Cultivation and Technology Haimen 226100JiangsuChina

Biological yield indicates the potential for increasing *** carbon metabolism plays an important role in the biomass accumulation of rapeseed(Brassica napus L.).Field experiments with the hybrid HZ62(with a conventional plant architecture)grown in 2016–2017,and HZ62 and accession 1301(with a compact plant architecture)grown in 2017–2018 were conducted to characterize the physiological and proteomic responses of leaf photosynthetic carbon metabolism to density and row spacing *** densities were set at 15×10;ha^(-1)(D1),30×10^(4)ha^(-1)(D2),and 45×10^(4)ha^(-1)(D3)(main plot),with row spacings of 15 cm(R15),25 cm(R25),and 35 cm(R35)(subplot).Individual and plant population biomass accumulation was greatest at R25,R15,and R15 for D1,D2,and D3,respectively,for both *** comparison with D1 R25,the individual aboveground biomass of HZ62 decreased by60.2%,whereas the population biomass increased by 31.9%,and the individual biomass of genotype1301 decreased by 54.0%and the population biomass increased by 53.9%at D3 *** carbon metabolic enzymes varied between genotypes at flowering *** contrast to D1 R25,at D3 R15 the activities of ribulose-1,5-bisphosphate carboxylase/oxygenase(Rubisco)and sucrose phosphate synthase(SPS)and the contents of starch,sucrose and soluble sugars in leaves were significantly decreased in HZ62 and increased in genotype *** activities of fructose-1,6-bisphosphatase(FBPase)decreased,in consistency with the abundance of fructose-bisphosphate aldolase in *** contrast,sucrose synthase(Su Sy)activity appeared to decrease in both genotypes,but a significant increase in abundance of a protein with sucrose synthase was found in the 1301 genotype by proteomic *** increased density and reduced row spacing,the expression of most key proteins involved in carbon metabolism was elevated,and enzyme activity and carbon assimilate content were increased in 1301,whereas HZ62 showed the opposite trend,indicati

关键词： Rapeseed Density Row spacing Dry matter Leaf carbon metabolism

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Reaction kinetics determination based on microfluidic technology

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Chinese Journal of Chemical Engineering 2022年第1期35卷 49-72页

作者： Zifei yan Jiaxin Tian Chencan Du Jian Deng guangsheng Luo The State Key Lab of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Microfluidic technology has been successfully applied to determine the reaction kinetics relying on its great characteristics including narrow residence time distribution,fast mixing,high mass and heat transfer rates and very low consumption of *** this review,the recent progresses about the reaction kinetics measured in microreactors are comprehensively organized,and the kinetic modeling thoughts,determination methods and essential kinetic regularities contained in these studies are summarized according to the reaction types involving nitration,oxidation,hydrogenation,photochemical reaction,polymerization and other ***,the significant advances in the innovation of microplatform are also *** novel reactor configuration methods were established mainly to achieve rapid and efficient data collection and ***,the advantages of microfluidic technology for the kinetic measurement are summarized,and a perspective for the future development is provided.

关键词： Microfluidics Microreactor Kinetics Chemical reaction

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Photovoltaic characteristics of Ca_3Co_4O_9/Nb-doped SrTiO_3 heterojunction

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Science China(Physics,Mechanics & Astronomy) 2012年第5期55卷 772-775页

作者： wang ShuFang LIU FuQiang yan GuoYing CHEN ShanShan CHEN JingChun wang JiangLong Yu Wei FU guangsheng Hebei Key Lab of Optic-electronic Information and Materials Hebei UniversityBaoding 071002China

Ca3Co409/Nb-SrTiO3 heterojunction with good rectifying behavior at room temperature was fabricated by growing a layer of Ca3Co409 film on the lwt% Nb-doped SrTiO3 substrate by means of the chemical solution deposition technique. A large open-circuit voltage signal with the response time of tens of nanosecond was observed at room temperature when the Ca3Co409 layer of the heterojunction was illuminated under the 308 nm irradiation and no voltage signal was detected under the 10.6 gun irradiation. A mechanism based on the photovoltaic effect of a p-n junction was proposed to explain the experimental results. The present work shows a great potential of this new heterojunction as photoelectric devices.

关键词： photovoltaic effect heterojunction layered cobalt oxides chemical solution deposition

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One Step Preparation of Highly Dispersed TiO2 Nanoparticles

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Chemical Research in Chinese Universities 2015年第5期31卷 688-692页

作者： LIU Xu CHEN yan JIAO Shihui PANG guangsheng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

A facile approach was developed to prepare highly dispersed TiO2 nanoparticles with selected phase. The crystallization phase of the nanoparticles can be easily tuned from anatase to rutile by the dosage of hydrochloric acid in the reaction system. The crystallite size of the as-prepared anatase TiO2 nanoparticles was ca. 3.2 nm with high dispersion. A transparent TiO2 colloid was obtained by dispersing the as-prepared anatase TiO2 nanoparticles in deionized water without any organic additives added. The concentration of TiO2-H2O colloid can be as high as 1600 g/L. The optical transmittance of TiO2-H2O colloid with a low concentration was nearly 100% in the visible region. Furthermore, anatase TiO2 nanoparticles（TiO2-NPs） showed superior photocatalytic performance compared to rutile TiO2-NPs.

关键词： TiO2 nanoparticle Water-dispersible Colloid

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Ultra‑Stable Sodium‑Ion Battery Enabled by All‑Solid‑State Ferroelectric‑Engineered Composite Electrolytes

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Nano-Micro Letters 2024年第11期16卷 704-717页

作者： Yumei wang Zhongting wang Xiaoyu Xu Sam Jin An Oh Jianguo Sun Feng Zheng Xiao Lu Chaohe Xu Binggong yan.guangsheng Huang Li Lu College of Aerospace Engineering Chongqing UniversityChongqing 400044People’s Republic of China National University of Singapore(Chongqing)Research Institute Chongqing 401123People’s Republic of China College of Materials Science and Engineering Chongqing UniversityChongqing 400044People’s Republic of China Department of Mechanical Engineering National University of Singapore9 Engineering Drive 1Singapore 117575Singapore Fujian Key Laboratory of Special Energy Manufacturing Xiamen Key Laboratory of Digital Vision MeasurementHuaqiao UniversityXiamen 361021People’s Republic of China

Symmetric Na-ion cells using the NASICON-structured electrodes could simplify the manufacturing process,reduce the cost,facilitate the recycling post-process,and thus attractive in the field of large-scale stationary energy ***,the long-term cycling performance of such batteries is usually *** investigation reveals the unavoidable side reactions between the NASICON-type Na_(3)V_(2)(PO_(4))_(3)(NVP)anode and the commercial liquid electrolyte,leading to serious capacity fading in the symmetric NVP//NVP *** resolve this issue,an all-solid-state composite electrolyte is used to replace the liquid electrolyte so that to overcome the side reaction and achieve high anode/electrolyte interfacial *** ferroelectric engineering could further improve the interfacial ion conduction,effectively reducing the electrode/electrolyte interfacial *** NVP//NVP cell using the ferroelectric-engineered composite electrolyte can achieve a capacity retention of 86.4%after 650 ***,the electrolyte can also be used to match the Prussianblue cathode NaxFeyFe(CN)_(6−z)·nH_(2)O(NFFCN).Outstanding long-term cycling stability has been obtained in the all-solid-state NVP//NFFCN cell over 9000 cycles at a current density of 500 mA g^(-1),with a fading rate as low as 0.005%per cycle.

关键词： Sodium-ion battery NVP anode All-solid-state Cyclic stability Ferroelectric

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Utilizing auxin dwarf genes to optimize seed yield and lodging resistance in rapeseed

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The Crop Journal 2024年第4期12卷 1208-1221页

作者： Hongxiang Lou yan Peng Chunyun wang Zongkai wang Bowen Zhao Ali Mahmoud El-Badri Maria Batool Bo wang Jing wang Zhenghua Xu Jie Zhao Jie Kuai guangsheng Zhou MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the yangtze River Hubei Hongshan LaboratoryCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070HubeiChina Field Crops Research Institute Agricultural Research CenterGiza 12619Giza GovernorateEgypt

Direct-seeding rapeseed production at high plant density raises the risk of *** investigated the use of dwarf genes to improve rapeseed plant architecture to balance yield and *** genotypes with different plant architectures(dwarf sca^(HS5),semi-dwarf+/sca^(HS5),and tall ^(HS5))were evaluated under varying nitrogen rates(N1,N2,and N3:120,240,and 360 kg N ha^(-1))and plant densities(D1,D2,and D3:15,45,and 75 plants m^(-2))from 2019 to *** results showed that increasing N rate positively influenced yield while decreasing lodging resistance in all *** plant density(D2-D3)enhanced lodging resistance and yield in sca^(HS5) and+/sca^(HS5),but reduced yield in ^(HS5).Compared to the two parents,+/sca^(HS5) exhibited moderate expressions of IAA3,GH3.15,and SAUR30 in stems under N2D3,resulting in reduced plant height and increased ***,+/sca^(HS5) had a thicker silique layer than ^(HS5) by 14.7%,and it had a significant correlation between branch height/angle and *** N rate led to increased lignin and pectin contents,while cellulose content *** plant density resulted in greater stem cellulose content and CSLA3/7 expression in sca^(HS5) and+/sca^(HS5),but decreased in ^(HS5).Compared to ^(HS5),+/sca^(HS5) exhibited higher expressions of ARAD1 and GAUT4,along with a 51.1%increase in pectin content,leading to improved lodging resistance under ***,+/sca^(HS5) showed a 46.4%higher yield and 38.9%lodging resistance than ^(HS5) under N2D3,while sca^(HS5) demonstrated strong lodging resistance but lower yield ***,this study underscores the potential of utilizing auxin dwarf genes to optimize the trade-off between yield and lodging resistance in rapeseed and the possibility of maximizing yield potential by optimizing the plant architecture of+/sca^(HS5) through nitrogen reduction and dense planting.

关键词： Rapeseed Plant density Nitrogen Lodging Auxin

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