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Construction and application of bioinspired nanochannels based on two-dimensional materials

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Chinese Chemical Letters 2022年第5期33卷 2291-2300页

作者： Jinlin Hao Weijie Wang Jiawei Zhao Honglin Che Lu Chen Xin Sui College of Materials Science and Engineering Qingdao UniversityQingdao 266071China

With the development of nanotechnology and materials science,bioinspired nanochannels appeared by mimicking the intelligent functions of biological ion *** have attracted a great deal of at-tention in recent years due to their controllable structure and tunable chemical *** by the layered microstructure of nacre,2D layered materials as excellent matrix material of nanochannel come into our field of *** nanochannels based on 2D materials have the advantages of facile preparation,tunable channel size and length,easy expansion,and modification,***,the 2D layered nanofluid system based on bionic nanochannels from 2D layered materials has great potential in biomimetic microsensors,membrane separations,energy conversion,and so *** this paper,we focus on the construction and application of bionic nanochannels based on 2D layer ***,a basic understanding of nanochannels based on 2D materials is briefly introduced,we also present the property of the 2D materials and construction strategies of bionic ***,the application of these nanochannels in responsive channels and energy conversion is *** unsolved challenges and prospects of 2D materials-based nanochannels are proposed in the end.

关键词： Bioinspired nanochannels 2D material Layered structure Energy conversion Responsive nanochannels

Nitric oxide involved in signal transduction of Jasmonic acid-induced stomatal closure of Vicia faba L.

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Chinese Science Bulletin 2005年第6期50卷 520-525页

作者： LIUXin SHIWuliang ZHANGShuqiu LOUChenghou StateKeyLaboratoryofPlantPhysiologyBiochemistry CollegeofBiologicalSciencesChinaAgriculturalUniversityBeijing100094China StateKeyLaboratoryofPlantPhysiologyBiochemistry CollegeofBiologicalSciencesChinaAgriculturalUniversityBeijing100094China//DepartmentofLifeScienceLaiYangAgriculturalCollegeQingdao266109China

Nitric oxide (NO) and Jasmonic acid (JA) are two key signaling molecules involved in many and diverse biological pathways in plants. Growing evidence suggested that NO signaling interacts with JA signaling. In this work, Our experiment showed that NO exists in guard cell of Vicia faba L., and NO is involved in signal transduction of JA- induced stomata closuring: (ⅰ) JA enhances NO synthesis in guard cell; (ⅱ) both JA and NO induced stomatal closure, and had dose response to their effects; (ⅲ) there are synergetic correlation between JA and lower NO concentration in regu- lation of stomatal movement; (ⅳ) JA-induced stomatal closure was largely prevented by 2-phenyl-4,4,5,5-tetrame- thylimidazoline-1-oxyl-3-oxide (PTIO), a specific NO scav- enger. An inhibitor of NO synthase (NOS) in mammalian cells, NG-nitro-L-Arg-methyl eater (L-NAME) also inhibits plant NOS, repressing JA-induced NO generation and JA-induced stomatal closure. We presumed that NO mainly comes from NOS after JA treatment.

关键词：氧化氮 Vicia faba L. 分子结构细胞真核细胞植物气孔

新型磷钨酸基固体酸催化油酸酯化合成生物柴油（英文）

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燃料化学学报 2017年第3期45卷 303-310页

作者：王红红刘丽君龚树文聊城大学化学化工学院山东聊城252059

利用磷钨酸(PTA)与1,2,3-三氮唑-4,5-二羧酸(TDA)在水溶液中的反应,合成了一种新的固体酸TDA-PTA,采用X射线粉末衍射(XRD)、扫描电镜(SEM)、红外光谱(FT-IR)、热重(TG)以及电位滴定等方法对其进行了表征,并以油酸与甲醇的酯化反应为探... 详细信息

利用磷钨酸(PTA)与1,2,3-三氮唑-4,5-二羧酸(TDA)在水溶液中的反应,合成了一种新的固体酸TDA-PTA,采用X射线粉末衍射(XRD)、扫描电镜(SEM)、红外光谱(FT-IR)、热重(TG)以及电位滴定等方法对其进行了表征,并以油酸与甲醇的酯化反应为探针反应,考察了其催化性能,探讨了催化剂用量、醇酸物质的量比、反应时间、反应温度以及催化剂重复利用次数等对产物收率的影响。结果表明,TDA-PTA不仅保留有磷钨酸典型的Keggin结构,而且具有较强的酸强度;经修饰后,催化剂具有规整的球形形貌,比表面积明显大于磷钨酸;TDA-PTA在油酸与甲醇的酯化反应中表现出了优良的催化活性,尤其显示出好的重复利用性,六次使用后,仍得到86.8%的油酸甲酯产率,催化剂的物相以及Keggin结构没有明显变化。

关键词：杂多酸固体酸催化酯化油酸

Copolymers with fluorescence properties in mesoporous silica SBA-15:Synthesis and characterization

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Chinese Chemical Letters 2014年第12期25卷 1620-1624页

作者： Li-Ping Wang Guang Li Wen-Zhi Li Chao-Lei Ban Yu-Chao Li Cong Guo Meng-Meng Zhang Ling-Yun Liu Na-Na Lu Meng-Zhu Zheng College of Materials Science and Engineering Liaocheng University

A novel copolymer with fluorescence properties in mesoporous silica SBA-15 was prepared via a combination of surface-initiated reversible addition-fragmentation chain transfer（RAFT） polymerization and ＂click＂ chemistry.A sufficient amount of peroxide groups were introduced into mesoporous silica SBA-15 channel pores and were further used to initiate the RAFT polymerization of styrene and 4-vinylbenzyl azide,resulting in SBA-15 supported polystyrene-co-poly（4-vinylbenzyl azide） copolymer（PS-co-PVBA/SBA-15） hybrid *** samples were characterized by Fourier transform infrared spectroscopy（FT-IR）,transmission electron microscopy（TEM）,thermogravimetry analysis（TGA）,N_2 adsorption-desorption isotherms and X-ray diffraction（XRD）,*** results show that the styrene and 4-vinylbenzyl azide had copolymerized inside mesoporous silica ***,Npropargyl-carbazole（PC） was connected to PS-co-PVBA/SBA-15 hybrid material via ＂click＂ reaction,resulting in PS-co-PVBC/SBA-15 with carbazole side groups hybrid *** fluorescence spectrum is dominated by a broad band from 350 nm to 400 nm in narrow region and the maximum peak is 362 nm,indicating the characteristic absorption of the carbazole group of PS-co-PVBC/SBA-15 hybrid material.

关键词： SBA-15 RAFT "Click" chemistry Fluorescence properties

Theoretical Prediction on the Germylenoid HB=GeLiF and Its Insertion Reaction with R-H(R = F,OH,NH_2)

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Chinese Journal of Structural Chemistry 2012年第1期31卷 19-26页

作者：李文佐杨凤霞程建波李庆忠宫宝安 Laboratory of Theoretical and Computational Chemistry College of Chemistry and Chemical EngineeringYantai University

In the present work we investigated a novel triplet ground-state germylenoid HB=GeLiF as well as its insertion reactions with RH（R = F,OH and NH2） using the DFT B3LYP and QCISD methods for the first *** optimization calculations show that the triplet HB=GeLiF has three equilibrium structures,in which the four-membered ring structure is the most stable with the lowest *** mechanisms of the three insertion reactions of germylenoid HB=GeLiF with RH（R = F,OH,and NH2） are identical to each *** on the calculated results,it is concluded that under the same conditions the insertion reactions should occur easily in the order of H-F H-OH *** THF solvent the insertion reactions get more difficult than in the gas phase.

关键词： germylenoid HB=GeLiF triplet B3LYP QCISD insertion

Effects of Different Dietary Lipid Contents on Growth and Lipase Activity of Eriocheir sinensis Larvae

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Journal of Ocean University of China 2011年第1期10卷 55-60页

作者： ZHENG Debin PAN Luqing FANG Bo The Key Laboratory of Mariculture Ministry of Education Ocean University of China Qingdao 266003 P. R. China

The effects of different dietary lipid content on the growth and lipase activity ofEriocheir sinensis larvae were studied in the paper. The results showed that the survival, metamorphic rate and weight gain of E. sinensis larvae at different stages of growth all varied significantly with lipid content （P〈0.05）. Further, the survival and metamorphosis rates were the highest during the larval phases Z3 to Z4, and the weight gain was the highest during the larval phases Z5 to M. During the first 20h after metamorphosis of every larval stage, the lipase activity increased over time at Z1, Z2, Z3 and M and declined at Z4 and Zs, and was influenced significantly by lipid content （P〈0.05）. In addition, lipase activity at each larval stage began to respond to dietary lipid contents 4h after the larvae were fed, and tended to be stable after 12 h. The diets with higher lipase activity and lower lipid content were selected to give the suitable recipe of lipid requirements at each larval stage. It was concluded that the suitable lipid requirements at Zb Z2, Z3, Z4, Z5 and M were 6%, 4% 6%, 8%, 8% and 10%, respectively.

关键词： lipid content Eriocheir sinensis larvae growth lipase

基于动态再结晶动力学方程的镍基高温合金热变形流变应力预测（英文）

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稀有金属材料与工程 2018年第11期47卷 3329-3337页

作者：周海萍张弘斌刘杰秦升学吕玉廷山东科技大学山东青岛266590 青岛RTP工程技术中心山东青岛266590

采用等温热压缩实验,研究了1种典型镍基高温合金在1010～1160℃及0.001～1 s^(-1)条件下的高温流变行为。结果表明,在合金的高温变形过程中发生了动态回复(DRV)以及动态再结晶(DRX)现象。通过深入分析不同变形条件下合金的高温流变行为... 详细信息

采用等温热压缩实验,研究了1种典型镍基高温合金在1010～1160℃及0.001～1 s^(-1)条件下的高温流变行为。结果表明,在合金的高温变形过程中发生了动态回复(DRV)以及动态再结晶(DRX)现象。通过深入分析不同变形条件下合金的高温流变行为,分别建立了合金在加工硬化-动态回复阶段以及动态再结晶阶段的流变应力本构方程。其中,在动态再结晶阶段,流变应力本构方程的建立是基于一种新型的动态再结晶动力学方程,该方程中引入了最大软化速率应变。此外,采用线性拟合的方法,建立了本构方程中材料常数与Zener-Hollomon参数间的函数关系。同时,通过对比分析流变应力的实测值和预测值,并计算两者之间的相关系数(R)和平均相对误差绝对值(AARE),验证了所建立本构方程的准确性,它可以精确预测所研究合金的高温流变应力。

关键词：镍基高温合金本构方程加工硬化动态回复动态再结晶

Technical Challenges and Progress in Fluidized Bed Chemical Vapor Deposition of Polysilicon

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Chinese Journal of Chemical Engineering 2011年第5期19卷 747-753页

作者：李建隆陈光辉张攀王伟文段继海 Institute of Chemical Engineering Qingdao University of Science and Technology Institute of Electromechanical Engineering Qingdao University of Science and Technology

Various methods for production of polysilicon have been proposed for lowering the production cost andenergy consumption, and enhancing productivity, which are critical for industrial applications. The fluidized bed chemical vapor deposition （FBCVD） method is a most promising alternative to conventional ones, but the homogeneous reaction of silane in FBCVD results in unwanted formation of fines, which will affect the product qualityand output. There are some other problems, such as heating degeneration due to undesired polysilicon deposition on the walls of the reactor and the heater. This article mainly reviews the technological development on FBCVD of polycrystalline silicon and the research status for solving the above problems. It also identifies a number of challenges to tackle and principles should be followed in the design ofa FBCVD reactor.

关键词： fluidized bed chemical vapor deposition fine particles homogeneous reaction

Some results on 4~m2~n designs with clear two-factor interaction components

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Science China Mathematics 2008年第7期51卷 1297-1314页

作者： ZHAO ShengLi ZHANG RunChu LIU MinQian School of Mathematical Sciences Qufu Normal UniversityQufu 273165China Department of Statistics School of Mathematical Sciences and Key Laboratory of Pure Mathematics and CombinatoricsNankai UniversityTianjin 300071China

Clear effects criterion is one of the important rules for selecting optimal fractional factorial designs,and it has become an active research issue in recent *** et *** upper and lower bounds on the maximum number of clear two-factor interactions(2fi's) in 2n-(n-k) fractional factorial designs of resolutions III and IV by constructing a 2n-(n-k) design for given k,which are only restricted for the symmetrical *** paper proposes and studies the clear effects problem for the asymmetrical *** improves the construction method of Tang et *** 2n-(n-k) designs with resolution III and derives the upper and lower bounds on the maximum number of clear two-factor interaction components(2fic's) in 4m2n designs with resolutions III and *** lower bounds are achieved by constructing specific *** show that the number of clear 2fic's in the resulting design attains its maximum number in many cases,which reveals that the construction methods are satisfactory when they are used to construct 4m2n designs under the clear effects criterion.

关键词： clear mixed levels resolution two-factor interaction component 62K15