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SSRN 2023年

作者： Chen, Yu Shen, Jun Wang, Weidong Li, Lin Zheng, Dezong Qi, Fei Wang, Xiaodong Li, Quanji Key Laboratory of Bio-Based Material Science & Technology of Ministry of Education College of Material Science and Engineering Northeast Forestry University Harbin150040 China Engineering Research Center of Advanced Wooden Materials of Ministry of Education College of Material Science and Engineering Northeast Forestry University Harbin150040 China Layo Wood Industry Co. Ltd Zhejiang China

Different amounts of glyoxal and paraformaldehyde were used to synthesize phenol glyoxal (PG) and phenol paraformaldehyde (PPF) resins, which were compared to conventional phenol formaldehyde (PF) resins. The oxidation of glyoxal leads to a pH value of 9.83 for PG 2.2. Due to the addition of polyformaldehyde, PPF 2.2 has a greatest viscosity at 17333.33 mPa∙s. The PPF 2.0 plywood has a bonding strength of as high as 1.94 MPa. The formaldehyde emission of PG 1.8 plywood is found to have a minimum value of 0.025 μg/m3, reaching the ENF (≤ 0.025 μg/m3) limit range. The emission of volatile organic compounds (VOCs) from plywood changes significantly depending on the aldehydes used. Acetaldehyde is found only in PG plywood and is associated with the rise of glyoxal. In comparison to the other two types of plywood, PPF plywood has a much greater aromatic VOCs content and total volatile organic compound (TVOC) emissions. The measured TVOC value for PPF 2.2 is 196.07 μg/m3. The results showed that the TCR of PPF 1.8, PPF 2.0, and PG 1.8 are above the threshold of 1.00E-4, which indicates a definite carcinogenic risk. The presence of acetaldehyde in PG plywood was found to exceed the safety threshold for non-carcinogenic risk. The substitution of formaldehyde with other aldehydes has been shown to effectively decrease the emission of formaldehyde in plywood, which leads to the release of different VOCs in plywood. Limiting the VOCs that high health hazards is crucial to reducing the negative impact of plywood on both the indoor environment and human health. © 2023, The Authors. All rights reserved.

关键词： Phenols

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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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Numerous Active Sites in Self-Supporting Co3o4 Nanobelt Array for Boosted and Stabilized 5-Hydroxymethylfurfural Electro-Oxidation

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SSRN 2023年

作者： Liu, Dan Li, Yudong Wang, Chengyu Yang, Haiyue Wang, Rong Li, Shujun Yang, Xiaohui Key Laboratory of Bio-based Material Science & Technology Ministry of Education Northeast Forestry University Harbin150040 China School of Metallurgy and Materials Engineering Chongqing University of Science & Technology Chongqing401331 China Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing400714 China

Constructing an efficient electrocatalyst for the oxidation of 5-Hydroxymethylfurfural(HMF) to 2,5-furan dicarboxylic acid(FDCA) is highly desirable in achieving biomass conversion. Generally, there are two strategies to enhance the electrocatalyst’s activity: increasing the number of active site or increasing the intrinsic activity of each active site. Compared with the latter, the former is usually ignored in the HMF oxidation reaction(HMFOR), but it is very critical for practical applications. Herein, we fabricate a self-supporting three-dimensional porous Co3O4 nanobelt array(P-Co3O4-NBA) electrode with numerous active sites. Benefiting from the unique structural feature, P-Co3O4-NBA demonstrates nearly 100% of HMF conversion efficiency, 96.9% of FDCA selectivity, and 97.0% of Faraday efficiency. Notably, it can also deliver remarkable long-term stability over 30 continuous cycles. These exceptional features position P-Co3O4-NBA as one of the most promising electrocatalysts reported thus far for HMFOR. This work highlights the potential application of HMF oxidation to FDCA in large-scale industrial processes. © 2023, The Authors. All rights reserved.

关键词： Electrocatalysts

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Neonatal cortical astrocytes possess intrinsic potential in neuronal conversion in defined media

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中国药理学报（英文版） 2021年第11期42卷 1757-1768页

作者： Peng Zeng Qiu-hong Hua Jun-yuan Gong Chang-jie Shi Xiao-ping Pi Xin Xie Ru Zhang Shanghai Key Laboratory of Signaling and Disease Research Laboratory of Receptor-based Bio-medicineCollaborative Innovation Center for Brain ScienceSchool of Life Sciences and TechnologyTongji UniversityShanghai 200092China CAS Key Laboratory of Receptor Research the National Center for Drug ScreeningShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China

Astrocytes are multifunctional brain cells responsible for maintaining the health and function of the central nervous *** evidence suggests that astrocytes might be complementary source across different brain regions to supply new neurons during adult *** this study,we found that neonatal mouse cortical astrocytes can be directly converted into neurons when exposed to neurogenic differentiation culture conditions,with insulin being the most critical *** comparison studies between mouse cortical astrocytes and neuronal progenitor cells (NPCs) demonstrated the converted neuronal cells originate indeed from the astrocytes rather than *** neurons derived from mouse cortical astrocytes display typical neuronal morphologies,express neuronal markers and possess typical neuronal electrophysiological *** importantly,these neurons can survive and mature in the mouse brain in ***,by comparing astrocytes from different brain regions,we found that only cortical astrocytes but not astrocytes from other brain regions such as hippocampus and cerebellum can be converted into neurons under the current ***,our findings suggest that neonatal astrocytes from certain brain regions possess intrinsic potential to differentiate/transdifferentiate into neurons which may have clinical relevance in the future.

关键词： cortical astrocytes neonatal neuronal conversion insulin heterogeneity

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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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Gypsum Composites Reinforced by Hemp Fibers Via Enhanced Interfacial Compatibility

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SSRN 2023年

作者： Sun, Yanjun Chen, Qin Zhang, Xiao Ma, Yangbao Wu, Yihang Guo, Zixu Tan, Haiyan Bai, Long Huan, Siqi Gu, Jiyou College of Material Science & Engineering Northeast Forestry University Harbin150040 China Academy of Art Northeast Agricultural University Harbin150040 China Northeast Forestry University China College of Materials Engineering Henan University of Engineering Zhengzhou450000 China Key Laboratory of Bio-based Material Science & Technology China

Natural fibers have gained attraction as a means to enhance the mechanical properties of gypsum. This study examines the effects of untreated, modified, and dual-modified hemp fibers on the gypsum/fiber composites. The changes in the fibers and composites are characterized by SEM, ATR-FTIR, XRD, mechanical strength, initial and final setting time. The results demonstrate that the combination of alkali and PEO treatment enables the most evenly dispersion of fibers. Compared with pure gypsum, the elastic modulus and bending strength of the composites increase by 56% and 42%, respectively. Additionally, hydration process reveals that PEO helps to form denser composite structures. © 2023, The Authors. All rights reserved.

关键词： Gypsum

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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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Fabrication of Thermoplastic Poly(ether-ester) Elastomers with High Melting Temperature and Elasticity from bio-based 2,5-Furandicarboxylic Acid

ACS Sustainable Resource Management

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ACS Sustainable Resource Management 2024年第7期1卷 1520-1533页

作者： Tao Yang Fei Liu Ruixue Gao Xiaoqin Zhang Jiaxi Li Jinggang Wang Jin Zhu Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Zhenhai Ningbo Zhejiang 315201 China School of Materials Science and Engineering Shenyang University of Chemical Technology Shenyang Liaoning 110142 China

Even though current research on bio-based poly(ester-ether) elastomers (TPEEs) has expanded to include applications, only odd TPEEs with outstanding melting temperatures have been reported thus far. This is due to certain features, like desirable elastic properties and high melting temperature, which are still challenging to obtain without the utilization of petroleum-based monomers. In order to prepare bio-based TPEE with both high thermal resistance and elastic recovery, furan-based poly(1,4-cyclohexanedimethylene furandicarboxylate)-poly(tetramethylene glycol) multiblock copolymers (PCFTMG2k) were synthesized in this work. These copolymers had weight fractions of soft segments PTMG (ωPTMG) ranging from 30 to 80% while maintainingMnof the soft segments at 2 kg/mol. Indeed, while PTMG segments are found to delay substantially the crystallization of the PCF within the copolymers, the results show that TPEEs with both elastic properties and high melting temperatures can be successfully prepared by introducing soft segments with relatively good crystallization ability and controlling the content of soft segments. Moreover, the crystallization behavior of the copolymers was investigated, from which it was found that the copolymers transformed from a non-cocrystallization state to an isodimorphic state as the content of soft segments increased. More importantly, PCFTMG2k-80, containing 80 wt % of the PTMG segment, showed a shape recovery rate as high as 84.9% during the first cyclic test at 200% strain andTmup to 198°C at a high PTMG concentration, which is higher than those of almost all the TPA-based TPEEs. This PCFTMG2kbio-based TPEE will occupy an important position in the future market of high melting temperature thermoplastic elastomers.

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Rational construction and triethylamine sensing performance of foam shapedα-MoO_(3)@SnS_(2) nanosheets

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Chinese Chemical Letters 2022年第1期33卷 567-572页

作者： Xianhui Dong Qing Han Yaru Kang Haidong Li Xinyu Huang Zhengtao Fang Huimin Yuan Ahmed A.Elzatahry Zongtao Chi Guanglei Wu Wanfeng Xie School of Material Science&Engineering Institute of Materials for Energy and EnvironmentState Key Laboratory of Bio-Fibers and Eco-TextilesQingdao UniversityQingdao 266071China School of Electronics and Information Qingdao UniversityQingdao 266071China College of Physics and Electronic Engineering Qilu Normal UniversityJi'nan 250200China Materials Science and Technology Program College of Arts and SciencesQatar UniversityPO Box 2713DohaQatar

Owing to their high surface area,stable structure and easy fabrication,composite nanomaterials with encapsulation structures have attracted considerable research interest as sensing materials to detect volatile organic ***,a hydrothermal route is designed to prepare foam shapedα-MoO_(3)@SnS_(2)nanosheets that exhibit excellent sensing performance for triethylamine(TEA).The developed sensor,based onα-MoO_(3)@SnS_(2)nanosheets,displays a high response of 114.9 for 100 ppm TEA at a low working temperature of 175℃with sensitivity higher than many other reported *** addition,the device shows a wide concentration detection range(from 500 ppb to 500 ppm),good stability after exposure to air for 80 days,and excellent *** superior sensing characteristics of the developed sensor are attributed to the high crystallinity ofα-MoO_(3)/SnS_(2),excessive and accessible active sites provided by the good permeability of porous SnS_(2)shells,and the excellent conductivity of the encapsulation heterojunction ***,the foam shapedα-MoO_(3)@SnS_(2)nanosheets presented herein have promising practical applications in TEA gas sensing devices.

关键词： MoO_(3) SnS_(2) Encapsulation heterojunction Triethylamine Sensing performance

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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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