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Progress in Natural Science:Materials International 2024年第5期34卷 913-920页

作者： Haiqi Zhang Qingqing Zhang xiaojun zeng National Engineering Research Center for Domestic & Building Ceramics School of Materials Science and Engineering Jingdezhen Ceramic University

Rational design of electrocatalysts is the key to achieving sustainable oxygen evolution reaction(OER). The conjugation of metal organic frameworks(MOFs) with different multicomponent materials to precisely construct heterostructures is fascinating but remains a significant challenge due to different interface energies and nucleation kinetics. In this work, hollow multilayer heterogeneous catalyst(CoFeP/CoFeP/NP-C) was constructed using a rigid template sacrifice approach and an ion exchange strategy. By cleverly combining iron-based MOFs(MIL-88A, sacrifice template) nanorods, layered dihydroxides(LDH) nanosheets, and Prussian blue(PB) nancubes to form rich heterojunction and bimetallic phosphide catalysts, and by tuning the reaction kinetics and electron transfer capacities to enrich the active sites, ultimately promoting the intrinsic activity of the catalyst towards OER. Simultaneously, the co-doping of nitrogen and phosphorus in the heterostructure helped to adjust the electronic structure of the heterogeneous catalyst and the conductivity of the matrix, promoting the adsorption and desorption of OER intermediates on the catalyst surface. This work provides a new strategy for designing efficient and stable bimetallic phosphide electrocatalysts.

关键词： Bimetallic phosphides Heterogeneous interfaces MOF OER Sacrifice template

基于凝胶与非凝胶蛋白质组学技术的枣花蜜蛋白质鉴定分析

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食品与发酵工业 2025年第2期51卷 91-98页

作者：邓景升曾晓君张颖曹炜赵浩安程妮西北大学食品科学与工程学院陕西西安710069

蛋白质是一种相对稳定存在于蜂蜜中的大分子物质,研究蜂蜜蛋白对探究蜂蜜生物活性,筛选溯源标志成分具有重要意义。该文针对中国特色单花种蜂蜜——枣花蜜,基于凝胶和非凝胶2种蛋白质组学技术鉴定分析采集枣花蜜样品中的蛋白质组成,共发... 详细信息

蛋白质是一种相对稳定存在于蜂蜜中的大分子物质,研究蜂蜜蛋白对探究蜂蜜生物活性,筛选溯源标志成分具有重要意义。该文针对中国特色单花种蜂蜜——枣花蜜,基于凝胶和非凝胶2种蛋白质组学技术鉴定分析采集枣花蜜样品中的蛋白质组成,共发现216个蜂源蛋白和595个植物源蛋白,其中24种蜂源蛋白首次在枣花蜜中鉴定到,包括MAGUK p55亚族成员6 X1亚型、几丁质结合2型结构域蛋白、肽酶S1结构域蛋白等;利用BLAST工具筛选了11个潜在的枣花蜜特征蛋白标志物,包括金属内切蛋白酶2-MMP样、FAS1结构域蛋白、解毒蛋白质等。GO功能注释分析发现枣花蜜中鉴定到的蜂源和植物源蛋白主要参与碳水化合物代谢、蛋白质水解等生物学过程,涉及ATP结合、三磷酸鸟苷结合等分子功能。该文基于2种蛋白组学分析方法探究了枣花蜜蛋白质组成,为研究枣花蜜蛋白生物活性成分及筛选特征蛋白标志物提供理论参考。

关键词：枣花蜜凝胶蛋白质组学非凝胶蛋白质组学蛋白质鉴定

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等离子体对高频微波传输特性的影响

强激光与粒子束 2025年第1期37卷 39-45页

作者：包玉何湘陈建平陈玉东曾小军顾婷婷河海大学力学与工程科学学院南京211100 北京航空工程技术研究中心北京100076

研究高频微波在等离子体中的传输特性能有效地分析评估在微波通信和雷达技术中信息的传递过程。通过使用数值仿真的方法分析了等离子体电子密度、厚度及入射波频率对微波反射、吸收和透射的影响。结果显示,等离子体厚度和电子密度增加... 详细信息

研究高频微波在等离子体中的传输特性能有效地分析评估在微波通信和雷达技术中信息的传递过程。通过使用数值仿真的方法分析了等离子体电子密度、厚度及入射波频率对微波反射、吸收和透射的影响。结果显示,等离子体厚度和电子密度增加会导致吸收增强、透射减弱;且反射会随厚度降低和电子密度升高而微弱升高;高频微波更易于穿透等离子体,透射随频率提高而增强。此外,研究结果表明电子密度不仅能影响能量的传输,还会影响电磁波波形,使其展宽。高密度等离子体会明显导致微波波形时空上延展增宽,非弹性碰撞使得增宽现象明显。波形的改变规律能为雷达回波和微波通信所携带信息的复原工作提供一定的理论支撑。

关键词：高频微波等离子体有限元仿真传输特性时空延展

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陆相页岩有机质-黏土矿物复合孔隙体系中多组分烃类-水混合物赋存的分子模拟--以四川盆地侏罗系自流井组大安寨段为例

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石油与天然气地质 2025年第1期46卷 304-314页

作者：任文希曾小军王光付郭建春刘彧轩西南石油大学油气藏地质及开发工程全国重点实验室四川成都610500 中国石化石油勘探开发研究院北京102206

针对四川盆地侏罗系陆相页岩气烃类组成多样的特点,建立了干酪根狭缝孔、伊利石狭缝孔和复合孔组成的有机质-黏土矿物复合孔隙体系分子模型。通过分子动力学模拟,研究了湿气在复合孔隙体系中的微观赋存特征及其影响因素。研究发现:①压... 详细信息

针对四川盆地侏罗系陆相页岩气烃类组成多样的特点,建立了干酪根狭缝孔、伊利石狭缝孔和复合孔组成的有机质-黏土矿物复合孔隙体系分子模型。通过分子动力学模拟,研究了湿气在复合孔隙体系中的微观赋存特征及其影响因素。研究发现:①压力较低时,烃类分子会优先占据复合孔中靠近干酪根壁面的孔隙空间;而在高压条件下,分子数增加,较重的烃类分子会优先占据复合孔中靠近干酪根壁面的孔隙空间,使得轻质烃类只能在伊利石壁面处赋存。②在相同压力条件下,孔径越大,孔隙空间越大,可以容纳的烃类分子越多。③高压条件下水分子之间相互作用增强,并在氢键作用下聚集成团,团状水簇可赋存在干酪根表面,或游离于复合孔中,或形成水膜附着于伊利石表面。④有机质-黏土矿物复合孔隙体系中的有机质孔隙、复合孔和黏土矿物孔隙均对烃类赋存有贡献。相对于有机质孔隙,复合孔和黏土矿物孔隙能够容纳更多烃类分子,且以轻质烃类为主,含气性和可动性更好。

关键词：干酪根伊利石湿气分子模拟复合孔隙体系陆相页岩气四川盆地

Partially-Premixed Combustion Characteristics and Thermal Performance of Micro Jet Array Burners with Different Nozzle Spacings

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Journal of Thermal Science 2021年第5期30卷 1718-1730页

作者： YANG Haolin WU Yong zeng xiaojun WANG Xiaohan ZHAO Daiqing Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou510640China Department of Energy and Mechanical Engineering Hunan University of HumanitiesScience and TechnologyLoudi417000China Key Laboratory of Renewable Energy Chinese Academy of SciencesGuangzhou510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou510640China Guangdong Institute of Special Equipment Inspection and Research Shunde Branch Foshan528300China

In order to develop a burner with uniform temperature field,the combustion characteristics and thermal performance of partially premixed methane/air jet flames were experimentally studied by using micro jet array *** circular tubes of 1.0-mm inner diameter and 1.5-mm outer diameter were used as *** effects of nozzle spacing and equivalence ratio on flame phenomenology,temperature distribution and pollutant emissions were respectively investigated by camera photography,thermocouple measurement and sampling *** show that there are two clean flame patterns:clean merged-flame and clean non-merging *** flame patterns depend on the strength of flame interaction,the equivalence ratio of the mixture and the quantity of air entrainment through the gap between *** burners with small nozzle spacing such as 2 mm and 2.5 mm tend to produce fully merged flame with low equivalence ratio limit and the corresponding temperature fields are very uniform with fluctuations less than 0.3%,but a small increase in equivalence ratio will lead to rapid deterioration of combustion *** burner with a medium spacing of 3 mm can produce partially merged flame in a wide equivalence ratio range with low emissions,and the temperature fluctuation can be less than 0.5%(<7 K)in the optimal *** burner with a large spacing of 4 mm will basically form independent array flames with the largest temperature fluctuation over 1%,while it can achieve clean combustion under high equivalence ratio due to large air *** analysis shows that the micro jet array burner with medium nozzle spacing of 3 mm has the best combustion characteristics and thermal performance.

关键词： micro jet array burner flame interaction methane/air flame temperature fluctuation thermal performance

Constructing Built-In Electric Fields with Semiconductor Junctions and Schottky Junctions Based on Mo-MXene/Mo-Metal Sulfides for Electromagnetic Response

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Nano-Micro Letters 2024年第10期16卷 453-473页

作者： xiaojun zeng Xiao Jiang Ya Ning Yanfeng Gao Renchao Che School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403People's Republic of China School of Materials Science and Engineering Shanghai UniversityShanghai 200444People's Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering and TechnologyFudan UniversityShanghai 200438People's Republic of China Zhejiang Laboratory Hangzhou 311100People's Republic of China

The exploration of novel multivariate heterostructures has emerged as a pivotal strategy for developing high-performance electromagnetic wave(EMW)absorption ***,the loss mechanism in traditional heterostructures is relatively simple,guided by empirical observations,and is not *** this work,we presented a novel semiconductor-semiconductor-metal heterostructure sys-tem,Mo-MXene/Mo-metal sulfides(metal=Sn,Fe,Mn,Co,Ni,Zn,and Cu),including semiconductor junctions and Mott-Schottky *** skillfully combining these distinct functional components(Mo-MXene,MoS_(2),metal sulfides),we can engineer a multiple heterogeneous interface with superior absorption capabilities,broad effective absorption bandwidths,and ultrathin matching *** successful establishment of semiconductor-semiconductor-metal heterostructures gives rise to a built-in electric field that intensifies electron transfer,as confirmed by density functional theory,which collaborates with multiple dielectric polarization mechanisms to substantially amplify EMW *** detailed a successful synthesis of a series of Mo-MXene/Mo-metal sulfides featuring both semiconductor-semiconductor and semiconductor-metal *** achievements were most pronounced in Mo-MXene/Mo-Sn sulfide,which achieved remarkable reflection loss values of-70.6 dB at a matching thickness of only 1.885 *** cross-section calculations indicate that these MXene/Mo-metal sulfides have tremendous potential in practical military stealth *** work marks a departure from conventional component design limitations and presents a novel pathway for the creation of advanced MXene-based composites with potent EMW absorption capabilities.

关键词： Semiconductor-semiconductor-metal heterostructure Semiconductor junctions Mott-Schottky junctions Built-in electric field Electromagnetic wave absorption

Construction of dual heterogeneous interface between zigzag-like Mo–MXene nanofibers and small CoNi@NC nanoparticles for electromagnetic wave absorption

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Journal of Advanced Ceramics 2023年第8期12卷 1562-1576页

作者： xiaojun zeng Xiao Jiang Ya Ning Feiyue Hu Bingbing Fan School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403China School of Materials Science&Engineering Zhengzhou UniversityZhengzhou 450001China Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China

Two-dimensional(2D)transition metal carbides(MXene)possess attractive conductivity and abundant surface functional groups,providing immense potential in the field of electromagnetic wave(EMW)***,high conductivity and spontaneous aggregation of MXene suffer from limited EMW *** by dielectric–magnetic synergy effect,the strategy of decorating MXene with magnetic elements is expected to solve this *** this work,zigzag-like Mo_(2)TiC_(2)–MXene nanofibers(Mo-based MXene(Mo–MXene)NFs)with cross-linked networks are fabricated by hydrofluoric acid(HF)etching and potassium hydroxide(KOH)shearing ***,Co-metal–organic framework(MOF)and derived CoNi layered double hydroxide(LDH)ultrathin nanosheets are grown inside Mo–MXene NFs,and the N-doped carbon matrix anchored by CoNi alloy nanoparticles formed by pyrolysis is firmly embedded in the Mo–MXene NFs *** from synergistic effect of highly dispersed small CoNi alloy nanoparticles,a three-dimensional(3D)conductive network assembled by zigzag-like Mo–MXene NFs,numerous N-doped hollow carbon vesicles,and abundant dual heterogeneous interface,the designed Mo–MXene/CoNi–NC heterostructure provides robust EMW absorption ability with a reflection loss(RL)value of−68.45 dB at the thickness(d)of 4.38 *** robust EMW absorption performance can be attributed to excellent dielectric loss,magnetic loss,impedance matching(Z),and multiple scattering and reflection triggered by the unique 3D network *** work puts up great potential in developing advanced MXene-based EMW absorption devices.

关键词： zigzag-like Mo-MXene nanofiber(NF)network dual heterogeneous interface CoNi alloy electromagnetic wave(EMW)absorption

Preparation and Anti-wear and Friction-reducing Properties of Barium Borate Modified with Dodecoxyl Group

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China Petroleum Processing & Petrochemical Technology 2007年第4期9卷 55-59页

作者： zeng xiaojun Li Fenfang Zhou Maolin School of Chemistry and Chemical Engineering Central South University Changsha 410083

A novel lubricating oil additive dodecoxyl barium borate was synthesized. The product was characterized by FTIR, elemental analysis, thermo-gravimetric analysis （TGA）, and scanning electron microscopy （SEM）. Four-ball tests showed that the addition of a certain concentration of the additive to rapeseed oil could effectively increase both the load-carrying capacity （PB value）, resistance to wear, and friction-reducing abilities. SEM observations confirmed that the additive could result in a reduced diameter of the wear scar.

关键词： dodecoxyl barium borate prepare rapeseed oil tribological properties

Preliminary 3D printing of large inclined-shaped alumina ceramic parts by direct ink writing

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Journal of Advanced Ceramics 2020年第3期9卷 312-319页

作者： Liangliang YANG xiaojun zeng Allah DITTA Bo FENG Lizhong SU Yue ZHANG Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang UniversityBeijing 100191China Department of Chemistry and Biochemistry University of California Santa BarbaraSanta BarbaraCalifornia 93106United States

Three dimensional(3D)printing technology by direct ink writing(DIW)is an innovative complex shaping technology,possessing advantages of flexibility in fabrication,high efficiency,low cost,and ***,3D printing of complex alumina ceramic parts via DIW using thermally induced solidification with carrageenan swelling was *** rheological properties of the slurry under different thermally-induced modes were systematically *** solidification properties of thermally-induced pastes with varying contents of carrageenan were *** experimental results showed that the optimized paste consisting of 0.4 wt%carrageenan could be rapidly solidified at about 55℃,which could print inclined-plane more than 60°in vertical without support,resulting in better homogeneity of the green body.A nearly pore-free structure was obtained after sintering at 1600℃ for 2 h.

关键词： three dimensional(3D)printing alumina paste solidification prcperty thermally-induced carrageenan

Tribological Behavior of Benzothiazoline Derivative as Additive in Rapeseed Oil

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China Petroleum Processing & Petrochemical Technology 2012年第1期14卷 56-60页

作者： zeng xiaojun Huang Fang Li Jianming JiangYinyan Base Department of Changsha Medical University Changsha 410219 China Quality Supervision ＆ Testing Center for Fireworks Liuyang 410300 Changsha Commerce and Tourism College Changsha 410004

A novel lubricating oil additive 3-((2-(2-hydroxyethyl)-1,3,2,6-dioxazaborocan-6-yloxy)methyl) benzo[d] thiazole-2(3H)-thione(BTD) was *** product was characterized by FTIR,elemental analysis,and thermogravimetric analysis(TGA).Four-ball tribological tests showed that the addition of a definite concentration of this additive to rapeseed oil could effectively increase both the load-carrying capacity,resistance to wear,and friction-reducing abilities of the *** electron microscopy(SEM) observations have confirmed that the additive could result in a reduced diameter of the wear scar.

关键词： BTD additive rapeseed oil tribological properties