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Mesoporous TiO_2/Carbon Beads: One-Pot Preparation and Their Application in Visible-Light-Induced Photodegradation

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Nano-Micro Letters 2015年第3期7卷 243-254页

作者： Xiaowei Li yanqiu jiang Wenjing Cheng Yudong Li Xianzhu Xu Kaifeng Lin Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of Technology

Mesoporous Ti O2/Carbon beads have been prepared via a facile impregnation-carbonization approach, in which a porous anion-exchange resin and K2 Ti O(C2O4)2were used as hard carbon and titanium source, *** results reveal that the self-assembled composites have disordered mesostructure, uniform mesopores,large pore volumes, and high surface areas. The mesopore walls are composed of amorphous carbon, well-dispersed and confined anatase or rutile nanoparticles. Some anatase phase of Ti O2 was transformed to rutile phase via an increase of carbonization temperature or repeated impregnation of the resin with Ti O(C2O4)22-species. X-ray photoelectron spectroscopy, carbon, hydrogen, and nitrogen element analysis, and thermal gravity analysis results indicate the doping of carbon into the Ti O2 lattice and strong interaction between carbon and Ti O2 nanoparticles. A synergy effect by carbon and Ti O2 in the composites has been discussed herein on the degradation of methyl orange under visible light. The dye removal process involves adsorption of the dye from water by the mesopores in the composites, followed by photodegradation on the separated dye-loaded catalysts. Mesopores allow full access of the dye molecules to the surface of Ti O2 ***, the bead format of such composite enables their straightforward separation from the reaction mixture in their application as a liquid-phase heterogeneous photodegradation catalyst.

关键词： Ti O2nanoparticles Mesoporous carbon Composite bead Visible light Easy separation

Three-dimensional printing of graphene-based materials for energy storage and conversion

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SusMat 2021年第3期1卷 304-323页

作者： yanqiu jiang Fan Guo Yingjun Liu Zhen Xu Chao Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringKey Laboratory of Adsorption and Separation Materials&Technologies of Zhejiang ProvinceZhejiang UniversityHangzhouP.R.China State Key Lab of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhouP.R.China National Special Superfine Powder Engineering Research Center Nanjing University of Science and TechnologyNanjingP.R.China

Developing high-performance energy storage and conversion(ESC)device relies on both the utilization of good constituent materials and rational design of assembly ***-based materials,due to their superior properties like high electrical/thermal conductivity,large surface area,and unique optical properties,have been extensively reported for ESC *** emerging three-dimensional(3D)printing techniques,especially extrusion-based direct ink writing technique,have brought a revolutionary improvement in structure control accuracy and designing capability to graphene-based macro-assemblies,triggering a boost in functionalities and performances of graphene-based ESC *** these circumstances,understanding the very recent progress of 3Dprinted graphene materials and their design philosophy to bring new concepts for material designs and address the requirements for high-performance ESC devices are urgently *** this review,we aim to outline recent developments in 3D printing of graphene-based materials and their applications in ESC *** requirements and theoretical analysis for preparation printable inks are discussed,as well as feasible GO ink preparation strategies in existing *** representative explorations of 3D-printed graphenematerials in ESC applications like batteries,supercapacitors,solar steam generators,and electro-thermal conversion are also *** study attempts to provide a comprehensive overview of the progresses and limitations of present 3D printed graphenematerials,and seeks to enlighten the opportunities and orientations of future research in this field.

关键词： 3D printing direct ink writing energy storage and conversion graphene

Conformation Engineering of Two-Dimensional Macromolecules:A Case Study with Graphene Oxide

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Accounts of Materials Research 2020年第3期1卷 175-187页

作者： yanqiu jiang Ya Wang Zhen Xu Chao Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027P.R.China Graphene Industry and Engineering Research Institute Xiamen UniversityXiamen 361005P.R.China

CONSPECTUS:Two-dimensional sheets,a new family of macromolecules with 2D topology,are posed to rapidly extend material technologies and indispensably shape our *** great expectations of 2D macromolecules urgently call not only a unified understanding of their macromolecular behavior in the new 2D topology but also a general methodology to guide the precise fabrication to achieve disruptive performances of their macroscopic *** by these mutual fundamental problems,we have explored the conformation principle of 2D macromolecules and established a systematic routine for macroscopically assembled materials,in the model of graphene *** Account concludes our recent works in investigating macromolecular conformations and condensed states of 2D graphene oxide and initializes a conceptually new methodology of conformation engineering of 2D *** analogy with classic 1D polymers,we have depicted a systematical conformation map of graphene oxide extending from individual to multiple *** conformation map unifies the theoretic description and experimental observations,establishing the conformation principle of 2D *** have found rich liquid crystalline phases of graphene oxide and uncovered their extremely slow relaxation *** have created a liquid meta-crystal of graphene oxide,a new mesophase state with stable meta-periodicity beyond ordinary molecular order,by the invented shearing microlithography to achieve the free design and control of artificial *** proposed conformation engineering concept has underpinned the versatile design and rational control of multiscale structures of graphene macroscopic materials and promoted advanced performances of graphene fibers,films,and *** conformation principle in the case of graphene oxide can establish a unified theory of 2D polymers after the classic 1D *** conformation engineering will become a useful concept to depict the systematic“fabr

关键词： macroscopic unified analogy

Easily Separated and Recyclable Amino-functionalized Porous SiO2 Beads with 3D Continuous Meso/Macropore Channels

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Chemical Research in Chinese Universities 2018年第1期34卷 13-18页

作者： WANG Qi YANG Xiaohui jiang yanqiu HUO Hang LI Defeng LIN Kaifeng XU Xianzhu MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin lnstimte of Technology Harbin 150090 P. R. China Key Laboratory of Advanced Energy Materials Chemistry Ministry of Education Nankai University Tianjin 300071 P. R. China

Amino-fimctionalized porous SiO2 beads with a diameter of 200--800 μm（PSB-NH2） have been success- fully synthesized by grafting 3-ammopropyl-triethoxysilane onto meso/macroporous silica beads（PSB）, in which the PSB was prepared by hydrothermal synthetic method with a porous hard template anion-exchange resin. The as-prepared materials were characterized by means of nitrogen sorption and transmission electron micrographs（TEM）, showing the presence of 3D interconnected and continuous large mesopores and macropores inside. The beads were used to catalyze Knoevenagel condensation and proved to be highly active and selective due to the high accessibility of the reactants to the amino groups via the continuous 3D meso/macopores. Notably, such material in bead format facilitates the extremely straightforward separation from reaction solution without any centrifugation or filtration. Moreover, PSB-NH2 proved to be a stable catalyst via leaching experiment test, and can be easily recovered and reused without significant loss of activity in successive catalytic cycles.

关键词： Amino group, Porous SiO2 bead, Continuous 3D meso/macropore Knoevenagel condensation Straightforward separation

In Situ Preparation and Analysis of Bimetal Co?doped Mesoporous Graphitic Carbon Nitride with Enhanced Photocatalytic Activity

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Nano-Micro Letters 2019年第1期11卷 175-190页

作者： Wanbao Wu Zhaohui Ruan Junzhuo Li Yudong Li yanqiu jiang Xianzhu Xu Defeng Li Yuan Yuan Kaifeng Lin School of Chemistry and Chemical Engineering Harbin Institute of Technology Key Laboratory of Aerospace Thermophysics Ministry of Industry and Information TechnologyHarbin Institute of Technology

A novel photocatalyst of mesoporous graphitic carbon nitride(g-C_3N_4) co-doped with Co and Mo(Co/Mo-MCN) has been one-pot synthesized via a simple template-free method; cobalt chloride and molybdenum disulfide were used as the Co and Mo sources, respectively. The characterization results evidently indicate that molybdenum disulfide functions as Mo sources to incorporate Mo atoms in the framework of g-C_3N_4 and as a catalyst for promoting the decomposition of g-C_3N_4, resulting in the creation of mesopores. The obtained Co/Mo-MCN exhibited a significant enhancement of the photocatalytic activity in H_2 evolution(8.6 times) and Rhodamine B degradation(10.1 times) under visible light irradiation compared to pristine g-C_3N_4. Furthermore, density functional theory calculations were applied to further understand the photocatalytic enhancement mechanism of the optical absorption properties at the atomic level after Co-or Mo-doping. Finite-di erence time-domain simulations were performed to evaluate the e ect of the mesopore structures on the light absorption capability. The results revealed that both the bimetal doping and the mesoporous architectures resulted in an enhanced optical absorption; this phenomenon was considered to have played a critical role in the improvement in the photocatalytic performance of Co/Mo-MCN.

关键词： Co-doped g-C3N4 Porous g-C3N4 Photocatalysis Optical simulation Light absorption intensity

Monodomain Liquid Crystals of Two-Dimensional Sheets by Boundary-Free Sheargraphy

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Nano-Micro Letters 2022年第12期14卷 14-26页

作者： Min Cao Senping Liu Qingli Zhu Ya Wang Jingyu Ma Zeshen Li Dan Chang Enhui Zhu Xin Ming Yingjun Liu yanqiu jiang Zhen Xu Chao Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringKey Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang ProvinceZhejiang University38 Zheda RoadHangzhou 310027People’s Republic of China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering TaiyuanPeople’s Republic of China State Key Lab of Chemical Engineering College of Chemical and Biological EngineeringZhejiang University38 Zheda RoadHangzhou 310027People’s Republic of China

Eliminating topological defects to achieve monodomain liquid crystals is highly significant for the fundamental studies of soft matter and building long-range ordered ***,liquid crystals are metastable and sensitive to external stimuli,such as flow,confinement,and electromagnetic fields,which cause their intrinsic polycrystallinity and topological ***,we achieve the monodomain liquid crystals of graphene oxide over 30 cm through boundary-free *** obtained monodomain liquid crystals exhibit large-area uniform alignment of sheets,which has the same optical polarized angle and *** monodomain liquid crystals provide bidirectionally ordered skeletons,which can be applied as lightweight thermal management materials with bidirectionally high thermal and electrical ***,we extend the controllable topology of two-dimensional colloids by introducing singularities and disclinations in monodomain liquid *** structures with defect strength from−2 to+2 were *** work provides a facile methodology to study the structural order of soft matter at a macroscopic level,facilitating the fabrication of metamaterials with tunable and highly anisotropic architectures.

关键词： Monodomain Liquid crystals Graphene oxide Boundary-free sheargraphy Topological structure

Mechanism of Bupleurum and Asarum in Traumatic Brain Injury Treatment Based on Network Pharmacology and Molecular Docking Technology

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Medicinal Plant 2022年第3期13卷 18-23页

作者： Lianshan GUO yanqiu jiang Jihua FENG Huimin ZHAO Xiaomei TANG Guang ZENG Zhengzhao LI Trauma Surgery the Second Affiliated Hospital of Guangxi Medical University Nanning 530000 China

[Objectives]To explore the active components and mechanism of Bupleurum and Asarum in the treatment of traumatic brain injury(TBI).[Methods]All the active components and potential action targets of Bupleurum and Asarum pairs were collected by online platform Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP)database and literature *** genes related to traumatic brain injury were obtained by Online Mendelian Inheritance in Man(OMMI),Therapeutic Target Database(TTD),PharmGKB,Genecards and ***"drug-ingredient-target"network diagram was constructed by using Cytoscape *** 2.1.0 was used to integrate the intersection targets of drug targets and disease targets,and the String platform was used to construct a target protein-protein interaction network(PPI).Topological analysis and core target screening of the constructed PPI network were performed using the"CytoNCA"plug-in in Cytoscape *** Ontology(GO)annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment analysis were performed on the intersection targets using the DAVID ***,Autodock and Pymol software were used to simulate the binding activity of key candidate active components and core genes.[Results]25 active components were screened from Bupleurum-Asarum and 111 potential targets involved in the disease *** analysis and KEGG results showed that potential therapeutic targets were mainly enriched in biological processes such as inflammatory response,oxidative stress,cell membrane repair,and cytokine *** analysis and molecular docking showed that the key compounds of Bupleurum and Asarum were kaempferol and quercetin,which were well docked with the active pockets of four core genes of traumatic brain injury.[Conclusions]Bupleurum and Asarum may be involved in the regulation of inflammatory response,oxidative stress,cell membrane repair through multiple targets and multiple pathways in the

关键词： Bupleurum and Asarum Traumatic brain injury(TBI) Network Pharmacology Core target Molecular docking

职业教育校企合作非正式制度建设的逻辑与路径

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职业技术教育 2015年第34期36卷 14-18页

作者：周晶姜延秋吉林工程技术师范学院职业技术教育研究院吉林大学高等教育研究所编辑部

职业教育校企合作的非正式制度是指在长期的历史实践中形成的促进或制约职业教育校企合作的价值信念、文化传统、伦理规范、风俗习性、意识形态等。我国职业教育校企合作非正式制度缺乏,其原因在于政府、企业和学生三方参与动力不足且... 详细信息

职业教育校企合作的非正式制度是指在长期的历史实践中形成的促进或制约职业教育校企合作的价值信念、文化传统、伦理规范、风俗习性、意识形态等。我国职业教育校企合作非正式制度缺乏,其原因在于政府、企业和学生三方参与动力不足且存在有限理性。推进和完善我国职业教育校企合作非正式制度,其前提是寻找到包括价值观和围绕价值观推进文化理解和认同的一整套逻辑,包括在正式制度中明确职业教育校企合作的性质与边界,构建校企合作实践育人的文化理解机制、职业教育校企合作文化宣传机制,完善职业教育校企合作外部制度环境。

关键词：职业教育校企合作非正式制度制度逻辑建设路径

口服葡萄糖耐量试验中血糖曲线形态与胰岛功能关系的研究进展

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中华糖尿病杂志 2022年第5期14卷 517-520页

作者：蒋燕秋王鑫蕾顾云娟南通大学附属医院内分泌与代谢科南通226001

口服葡萄糖耐量试验(OGTT)是一种葡萄糖负荷试验,主要用以评估机体对血糖的调节能力。近年来,不同人群OGTT的血糖曲线形态与胰岛功能关系受到越来越多的关注。血糖曲线形态主要包括单相、双相血糖曲线以及血糖峰值时间等。其中,单相血... 详细信息

口服葡萄糖耐量试验(OGTT)是一种葡萄糖负荷试验,主要用以评估机体对血糖的调节能力。近年来,不同人群OGTT的血糖曲线形态与胰岛功能关系受到越来越多的关注。血糖曲线形态主要包括单相、双相血糖曲线以及血糖峰值时间等。其中,单相血糖曲线形状可以作为不同人群的胰岛功能障碍和患糖尿病风险的预测因子。同时,随着血糖峰值时间的延迟,个体胰岛功能随之变差,未来患有糖尿病的风险也随之增加。该文就OGTT期间血糖曲线形态与个体胰岛功能关系进行综述。

关键词：糖尿病口服葡萄糖耐量试验血糖曲线形状血糖峰值时间胰岛功能