检索结果-内蒙古大学图书馆

SSRN 2022年

作者： Sun, Miao Yang, Haiyue Wang, Xin Gao, Xiong Wang, Chengyu Ho, Shih-Hsin Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Material Science and Engineering College Northeast Forestry University Harbin150040 China State Key Laboratory of Urban Water Resources and Environment School of Environment Harbin Institute of Technology Harbin150040 China

Solar desalination technology is an effective approach to produce clean water through evaporating seawater driven by solar energy. However, it remains a great challenge to develop a kind of solar evaporator with high salt-resistance, great stability and superior efficiency. Herein, inspired by wood structure, a polyurethane/chitosan/MXene aerogel with directional channel structure was originally designed as the solar evaporator for desalination by the freeze-casting method. The unique anisotropic three-dimensional structure enabled the solar evaporator with efficient water transport network, which can effectively improve the salt-rejecting capability. Meanwhile, due to the combination of the full spectral absorption capacity of MXene and the unique directional channel structure,satisfactory evaporation rate (1.81 kg.m-2 h-1) and high evaporation efficiency (85.07%) under one-sun irradiation were achieved. Moreover, the evaporator continuously achieving high evaporation rate for 12 h under one-sun irradiation and stably floating on the high- concentration salt water for over 14 days. Also, a series of simulation and numerical modeling were carried out to assist in proving the mechanism of water transportation and desalination in the evaporator. Together, this work may provide a promising avenue for developing an efficient solar evaporator with superior salt blocking ability that could be potentially used for long-term clean water generation. © 2022, The Authors. All rights reserved.

关键词： Aerogels

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Engineering chiral mesoporous silica nanoparticles: Template design and structural control for advanced applications

Supramolecular Materials

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Supramolecular materials 2025年 4卷

作者： Yin, Yu Wei, Wu Zhang, Kai Sustainable Materials and Chemistry Department of Wood Technology and Wood-based Composites University of Göttingen Göttingen 37077 Germany Biotechnology Center (Biotechnikum) University of Göttingen Göttingen 37077 Germany Key Laboratory of Bio-based Material Science & Technology Ministry of Education Northeast Forestry University Heilongjiang Harbin 150040 China

Chiral mesoporous silica nanoparticles (CMSNs) are a distinct subset of mesoporous silica nanoparticles, combining the favorable physicochemical properties of MSNs with unique chiral architectures at both molecular and macroscopic scales. These helical structures endow CMSNs with specialized functionalities, enabling their applications in chiral catalysis, enantioselective recognition, chiral separation, drug delivery, and optical devices, making them a focal point in materials and biomedical research. Significant progress has been achieved in the synthesis of CMSNs, particularly in understanding the mechanisms of chirality formation and the critical role of surfactant templates in guiding chiral structures. This review summarizes these advancements, emphasizing experimental and theoretical insights. key applications of CMSNs, especially in drug delivery systems, are explored in detail, highlighting their potential to enhance bioavailability and therapeutic efficacy. Looking ahead, CMSN research presents exciting opportunities, including precise control over chiral structures, the development of novel templating strategies, and the exploration of broader applications. These advancements are expected to drive progress in nanoporous silica technologies and open new frontiers in materials science and nanomedicine. © 2025

关键词： Chiral mesoporous silica nanoparticles (CMSNS) Chirality formation Drug delivery systems Helical structures Surfactant templates

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Constructing Oxygen Vacancy-Regulated Cu/Fe2o3 Nanorod Array Electrodes for Boosting the Electrocatalytic Reduction of Nitrate

SSRN

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SSRN 2023年

作者： Yang, Ziyi Li, Yudong Liu, Dan Song, Maosen Gao, Yang Yang, Bin Han, Enshan He, Yanzhen Yang, Xiaohui School of Chemical Engineering Hebei University of Technology Tianjin300400 China Key Laboratory of Bio-based Material Science and Technology Northeast Forestry University Ministry of Education Heilongjiang Harbin150040 China Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing400714 China

The adsorption of nitrate is the key to enhancing the electrocatalytic nitrate reduction reaction (NitRR). Constructing oxygen vacancies (OVs) has been an effective strategy that can modulate the local electronic structure and enhance the adsorption of nitrate. However, the existing methods for effectively regulating the concentration of oxygen vacancies are still limited. Herein, based on a detailed understanding of the NitRR mechanism, a typical hydrolysis-coupling redox (HCR) reaction has been designed to prepare unique 3D Cu/Fe2O3 core-shell nanorod array cathodes with controllable oxygen vacancy concentration. The optimal Cu/Fe2O3-13 achieves a high nitrate conversion of 99.10% and ammonia selectivity of 98.30% in a 0.2 M Na2SO4 solution with 100 ppm [[EQUATION]]-N at -1.4 V vs. SCE. Furthermore, the Cu/Fe2O3-13 exhibits exceptional stability throughout a 30-hour electrocatalytic process. The outstanding electrochemical performance is attributed to the enhancement mechanism of OVs and a unique nanorod array structure with a high density of surface-exposed OVs and high-throughput transport pathways for ions-aspects. © 2023, The Authors. All rights reserved.

关键词： Electrocatalysis

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Interfacial synthesis of crystalline quasi-two-dimensional polyaniline thin films for high-performance flexible on-chip micro-supercapacitors

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Chinese Chemical Letters 2022年第8期33卷 3921-3924页

作者： Tao Zhang Panpan Zhang Zhongquan Liao Faxing Wang Jinhui Wang Mingchao Wang Ehrenfried Zschech Xiaodong Zhuang Oliver G.Schmidt Xinliang Feng Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Material Technology and EngineeringChinese Academy of SciencesNingbo 315201China Faculty of Chemistry and Food Chemistry Technische Universität DresdenDresden 01062Germany Center for Advancing Electronics Dresden(cfaed) Technische Universität DresdenDresden 01062Germany Fraunhofer Institute for Ceramic Technologies and Systems(IKTS) Dresden 01109Germany Material Systems for Nanoelectronics Chemnitz University of TechnologyChemnitz 09107Germany Institute for Integrative Nanosciences IFW DresdenDresden 01069Germany School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Special Functional Materials of Ministry of Education Henan UniversityKaifeng 475004China

Quasi-two-dimensional(q2 D)conducting polymer thin film synergizes the advantageous features of longrange molecular ordering and high intrinsic conductivity,which are promising for flexible thin film-based micro-supercapacitors(MSCs).Herein,we present the high-performance flexible MSCs based on highly ordered quasi-two-dimensional polyaniline(q2 D-PANI)thin film using surfactant monolayer assisted interfacial synthesis(SMAIS).Owing to high electrical conductivity,rich redox chemistry,and thin-film morphology,the q2 D-PANI MSCs show high volumetric specific capacitance(ca.360 F/cm^(3))and energy density(17.9 m Wh/cm^(3)),which outperform the state-of-art PANI thin-film based MSCs and promise for future flexible electronics.

关键词： 2D polymers Conducting polymers Interfacial synthesis Flexible electronics Microsupercapacitor

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Fluorescent Poly(vinyl alcohol) Films Containing Chlorogenic Acid Carbon Nanodots for Food Monitoring (vol 3, pg 7611, 2020)

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ACS APPLIED NANO materialS 2020年第11期3卷 11658-11658页

作者： Zhang, Xinyue Wang, Hui Niu, Na Chen, Zhijun Li, Shujun Liu, Shou-Xin Li, Jian Key Laboratory of Bio-based Material Science & Technology Ministry of Education Northeast Forestry University Harbin 150040 P. R. China Key Laboratory of Wood Science and Technology Zhejiang Agriculture and Forestry University Wusu Road 666 Hangzhou 311300 P. R. China

Functional materials that can sense food quality, detect additives, and lengthen storage times have huge potential in the food industry. Such materials, however, typically require toxic raw materials and complicated syntheses. Here, chlorogenic acid was used to fabricate photoluminescent carbon dots in an environmentally friendly and economical method. Transmission electron microscopy, Fourier transform infrared, and X-ray photoelectron spectroscopy showed a conjugated structure containing phenolic hydroxyl moieties. The carbon dots were doped into poly(vinyl alcohol) (PVA) to produce a functional film with good physical and mechanical performances. The optical properties of the film were characterized by UV–vis and photoluminescence spectroscopy. The fluorescence of the film was found to be sensitive to both the pH and Al3+ions. Scanning electron microscopy and atomic force microscopy micrographs showed the surface roughness of the fluorescent and PVA films. A solution of carbon dots and the functional film both demonstrated strong antioxidant capacity, and the as-prepared film showed good resistance to photobleaching. The film can be used to limit fruit shelf life, to detect Al3+residues in food, and to sense basic substances, including amines produced during spoilage. The film is a potential promising intelligent food-packaging material that can both extend the shelf life of foods and sense additives or contaminants.

关键词： Chlorogenic acid Carbon nanomaterials Quantum dots Fluorescence Food

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biomimetic Wood-Confined Hydrogel Ion Channel for Flexible Supercapacitors

SSRN

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SSRN 2022年

作者： Gao, Chenxiang Liu, Yue Zhang, Jiuzhou Li, Hui Liu, Yang Gu, Jiyou Ma, Tianyi Huo, Pengfei Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin150040 China School of Science RMIT University MelbourneVIC3000 Australia Centre for Translational Atomaterials

Hydrogel is a promising electrolyte substrate;however, the dimensional stability and ionic conductivity need to be further improved. To tackle this issue, a flexible poly (acrylic acid-co-acrylamide) [P(AA-co-AM)]-filled wood hydrogel composite electrolyte (WHE) is rationally designed and fabricated. This is the first demonstration that flexible wood as a porous backbone for hydrogels can regulate ion transport pathways to improve ionic conductivity and enhance dimensional stability of hydrogels. Firstly, the wood is delignified. Then the P(AA-co-AM) is uniformly distributed in the low tortuosity pores of wood by an in-situ polymerization reaction. The straight pores of wood confine the transport of electrolyte ions along the shortest path. The regulation effect of wood on ion transport paths makes the ionic conductivity (3.0 × 10 -2 S cm -1 ) of the electrolyte standing among the best of composite polymer electrolyte. The optimized supercapacitor exhibits a specific capacitance of 155.64 F g -1 and an energy density of 7.45 W h kg -1 . It also exhibits good flexibility under bending conditions and can maintain similar electrochemical performance at a wide range of bending angles. This work provides an effective strategy for the efficient use of wood resources and the development of low-cost, environmentally friendly and high-performance hydrogel electrolyte materials. © 2022, The Authors. All rights reserved.

关键词： Hydrogels

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bioBr quantum dots as low detection Ammonia sensors: Room temperature detection and adsorption mechanism analysis

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Chemical Physics Letters 2025年 874-875卷

作者： Yang, Xuekun Qin, Fangrong Chen, Fang Huang, Peng Wang, Weiliang Huang, Haiming Guo, Yuxi Zhang, Shaolin School of Physics and Materials Science Guangzhou University Guangzhou510006 China Key Lab of Si-based Information Materials & Devices and Integrated Circuits Design Department of Education of Guangdong Province Guangzhou510006 China School of Physics Guangdong Province Key Laboratory of Display Material and Technology Center for Neutron Science and Technology Sun Yat-sen University Guangzhou510275 China Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou510006 China

bioBr quantum dots (QDs) were synthesized by aqueous phase method for room temperature ammonia detection. It was found that the bioBr QDs exhibited a 65 % response to 100 ppm NH3 with a low detection limit of 1.54 ppm. DFT calculations further demonstrated the excellent selectivity and reproducibility of the bioBr QDs. The ultra-small size, high specific surface area, and abundant unsaturated edge sites of the bioBr QDs facilitated the oxygen adsorption and charge transfer, enabling efficient room-temperature chemo- resistive sensing. These findings emphasize the importance of bioBr QDs as high-performance materials for ammonia detection under ambient conditions. © 2025

关键词： Nanocrystals

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Recent progress on surface chemistryⅡ:Property and characterization

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Chinese Chemical Letters 2025年第1期36卷 8-57页

作者： Xin Li Zhen Xu Donglei Bu Jinming Cai Huamei Chen Qi Chen Ting Chen Fang Cheng Lifeng Chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao Jing Guo Weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun Li Dengyuan Li Jie Li Qing Li Ruoning Li Shuying Li Yuxuan Lin Mengxi Liu Peinian Liu Yanyan Liu Jingtao Lü Chuanxu Ma Haoyang Pan JinLiang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Qiang Sun Shijing Tan Bing Wang Dong Wang Li Wang Lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu Wei Xu Na Xue Linghao Yan Fan Yang Zhiyong Yang Chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Physics&University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

Surface with well-defined components and structures possesses unique electronic,magnetic,optical and chemical *** a result,surface chemistry research plays a crucial role in various fields such as catalysis,energy,materials,quantum,and *** science mainly investigates the correspondence between surface property and *** probe microscopy(SPM)techniques are important tools to characterize surface properties because of the capability of atomic-scale imaging,spectroscopy and manipulation at the single-atom *** this review,we summarize recent advances in surface electronic,magnetic and optical properties characterized mainly by SPM-based *** focus on elucidating theπ-magnetism in graphene-based nanostructures,construction of spin qubits on surfaces,topology properties of surface organic structures,STM-based light emission,tip-enhanced Raman spectroscopy and integration of machine learning in SPM studies.

关键词： Surface chemistry Scanning probe microscopy π-Magnetism Spin qubits Tip-enhanced Raman spectroscopy

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Grifola Frondosa Polysaccharides affects gut microbiota and lipid profiles depended on the molecular weight in mice

Grifola Frondosa Polysaccharides affects gut microbiota and ...

引用

2021 International Conference on Information technology and biomedical Engineering, ICITBE 2021

作者： Ji, Xiuyu Liu, Xinli Zhu, Deqiang Xu, Zhenshang Chu, Yaqi Zhang, Song Qilu University of Technology Shandong Academy of Sciences Shandong Provincial Key Laboratory of Microbial Engineering Department of Bioengineering Jinan250353 China State Key Laboratory of Bio-based Material and Green Papermaking Shandong Provincial Key Lab. of Microbial Engineering Qilu University of Technology Shandong Academy of Sciences Jinan250353 China

ISBN: (纸本)9781665400992

Figuring out the effect of Grifola frondosa Polysaccharide (GFP) on gut microbiota is increasingly recognized because of its widespread use in medicine area. In the present study, we investigated the potential influences of GFP with five molecular weight ranges on the gut microbiota, lipid content in serum and livers, and metabolic pathways in mice. GFP with each molecular weight range significantly changed the composition of the gut microbiota. Compared with the control (CK) group, GFP with five molecular weight ranges significantly changed Beta-diversity of the gut microbiota, especially EG3 (30-50k Dalton) group and the EG5 (=100k Dalton) group. GFP with five molecular weight ranges had no significant effect on the lipid profiles of the content of triglycerides (TG), total cholesterol (T-CHO), high density lipoprotein (HDL-C) and low density lipoprotein (LDL-C) in serum. The EG4 (50-100k Dalton) group obviously reduced the content of TG and T-CHO, slightly increased the content of HDL-C, and slightly changed the content of LDL-C in liver. The EG1 (=10k Dalton) group, the EG2 (10-30k Dalton) group, the EG3 group and the EG5 group made the KEGG pathways changed. These findings illustrated that GFP positively affected the microbial environment in the gut microbiota and offered the experimental evidence for preparation of multi-functional diet or medicine. © 2021 IEEE.

关键词： Polysaccharides

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bio-based and biodegradable Electrospun Fibers Composed of Poly(L-lactide) and Polyamide 4

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Chinese Journal of Polymer science 2020年第1期38卷 53-62,I0006页

作者： Tao Chen Guo-Cheng Zhong Yuan-Ting Zhang Li-Ming Zhao Yong-Jun Qiu School of Materials Science and Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Bio-based Material Engineering of China National Light Industry Council Shanghai200237China Shanghai Key Laboratory of Advanced Polymeric Materials Shanghai200237China School of Biotechnology East China University of Science and TechnologyShanghai200237China

Novel bio-based and biodegradable block copolymers were synthesized by "click" reaction between poly(L-lactide)(PLLA) and polyamide 4(PA4). Upon tuning the molar mass of PLLA block, the properties of copolymers and electrospun ultrafine fibers were investigated and compared with those of PLLA and PA4 blends. PLLA and PA4 were found incompatible and formed individual crystalline regions, along with reciprocal inhibition in crystallization. Electrospun fibers were highly hydrophobic, even if hydrophilic PA4 was the rich component. The crystallinity of either PLLA or PA4 decreased after electrospinning and PLLA-rich as-spun fibers were almost amorphous. Immersion tests proved that fibers of block copolymers were relatively homogeneous with micro-phase separation between PLLA and PA4. The fibrous structures of copolymers were different from those of the fibers electrospun from blends, for which sheath-core structure induced by macro-phase separation between homopolymers of PLLA and PA4 was confirmed by TEM, EDS, and XPS.

关键词： Poly(L-lactide) Polyamide 4 "Click"reaction Electrospinning Fiber

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