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SSRN 2024年

作者： Liu, Yuqi Kang, Fuyan Zhang, Yameng Tian, Jiangyang Qi, Houjuan Huang, Zhanhua Key Laboratory of Bio-based Material Science and Technology Ministry of Education Material Science and Engineering College Northeast Forestry University Harbin150040 China

Photorefining biomass into high value-added chemicals and clean energy is a promising technology to address environmental pollution and energy crisis. Within this work, g-C3N4/Mn0.7Cd0.3S heterostructure (CNMCS) with a strong built-in electric field was investigated as a bifunctional photocatalyst for photoreforming xylan to glyceric acid (GA) and water splitting. The optimized CNMCS exhibited superior performance in the coproduction of GA (77.6% yield) and H2 (2.89 mmol·gcat−1·h−1) without any sacrificial agents. GA yield (2.72 times and 1.67 times) and H2 evolution rate (1.71 times and 32.1 times) were markedly improved compared to Mn0.7Cd0.3S (MCS) and g-C3N4 (CN). The density functional theory (DFT) calculations confirmed the presence of a built-in electric field near the interface of CNMCS, which promoted the spatial separation of photogenerated carriers and thus significantly improved photocatalytic performance. Electron spin resonance (ESR) spectroscopy and radical scavenging experiments revealed that hydroxyl radicals, superoxide radicals, singlet oxygen, photogenerated holes, and photogenerated electrons drove these reactions in this system. This work blazed a new trail for reforming renewable biomass to coproduce high value-added chemicals and clean energy. © 2024, The Authors. All rights reserved.

关键词： Heterojunctions

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A New Application of Rice Straw in Reinforcing Phenolic Foam with Improved Flexural, Compression and Face Toward Tensile Properties

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SSRN 2024年

作者： Hao, Shuo Ding, Jiajian Xie, Hao Li, Shuang Wang, Weihong Song, Yongming Fang, Yiqun Liu, Tian Key Laboratory of Bio-Based Material Science and Technology Ministry of Education Material Science and Engineering College Northeast Forestry University Harbin150040 China

Being a low-cost byproduct of rice cultivation, the production of rice straw (RS) is huge, and its rational utilization is of a great challenge. Rice stalk possesses hollow tube shape and porous cell structure, results in lightweight and high insulation properties. Herein, based on its lightweight, we developed a foam composite with excellent mechanical strength. RS were built into a three-dimensional (3D) orthogonal grid and coupled with the incorporation of phenolic foam (PF). This is very different from the traditional reinforcing method of breaking RS into particles or fibers as fillers. The mass content of RS in present foam composite reached as high as 47% with a low thermal conductivity (0.0243 Wm−1K−1). Scanning electron microscopy established the presence of ultramicroscopic particle projections on the outer surface of RS, which is beneficial for enhancing their bonding performance by interlocking. The mechanical organization of RS, consisting of sclerenchyma cells and vascular bundles, can effectively resists deformation, thereby increasing the flexural strength and compression strength of RS/PF foam composite. The orthogonal structure of RS endows the composite with excellent transversely isotropy, withstanding greater edgewise compressive stress than that of flatwise due to the higher axial modulus of RS. Importantly, RS/PF foam composite presented good flame-retardant performance comparable to that of pure PF, because the RS orthogonal grid architecture was well infilled with PF foam. It is concluded that this research provides a simple and efficient way for utilizing RS in constructing lightweight composite. © 2024, The Authors. All rights reserved.

关键词： Thermal conductivity

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Electrochemical and colorimetric dual-signal detection of Staphylococcus aureus enterotoxin B based on AuPt bimetallic nanoparticles loaded Fe-N-C single atom nanocomposite

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Food science and Human Wellness 2024年第4期13卷 2025-2035页

作者： Huan Liang Hongcheng Liu Haojian Lin Guobao Ning Xiaokang Lu Siying Ma Fei Liu Hui Zhao Canpeng Li School of Chemical Science and Technology Yunnan UniversityKey Laboratory of Medicinal Chemistry for Natural ResourceMinistry of EducationKunming 650091China Institute of Quality Standard and Testing Technology Yunnan Academy of Agricultural ScienceSupervision and Testing Center for Farm Product QualityMinistry of AgricultureKunming 650223China State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275China Laboratory for Conservation and Utilization of Bio-resource Yunnan UniversityKunming 650091China

Sensitive detection of Staphylococcus aureus enterotoxin B(SEB)is of importance for preventing food poisoning from threatening human *** this work,an electrochemical and colorimetric dual-signal detection assay of SEB was *** probe(Ab2/AuPt@Fe-N-C)was bound to SEB captured by Ab1,where the Ab2/AuPt@Fe-N-C triggered methylene blue degradation and resulted in the decrease of electrochemical ***,the probe catalyzed the oxidation of 3,3’,5,5’-tetramethyl biphenyl to generate a colorimetric absorbance at 652 *** the target was captured and formed a sandwich-like complex,the color changed from colorless to *** detection by colorimetric and electrochemical methods showed a linear relationship in the concentration ranges of 0.0002-10.0000 and 0.0005-10.0000 ng/mL,with limits of detection of 0.0667 and 0.1670 pg/mL,*** dual-signal biosensor was successfully used to detect SEB in milk and water samples,which has great potential in toxin detection in food and the environment.

关键词： Staphylococcus aureus enterotoxin Electrochemical immunosensor Colorimetric assay MOF@borophene composite Dual-functional Fe-N-C signal atom catalyst

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Dual-functional marigold-like Zn_(x)Cd_(1-x)S homojunction for selective glucose photoreforming with remarkable H_(2)coproduction

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Journal of Energy Chemistry 2023年第4期79卷 158-167页

作者： Fuyan Kang Cai Shi Yeling Zhu Malin Eqi Junming Shi Min Teng Zhanhua Huang Chuanling Si Feng Jiang Jinguang Hu Key Laboratory of Bio-based Material Science and Technology Ministry of EducationMaterial Science and Engineering CollegeNortheast Forestry UniversityHarbin 150040HeilongjiangChina Tianjin Key Laboratory of Pulp and Paper College of Light Industry and EngineeringTianjin University of Science and TechnologyTianjin 300457China Sustainable Functional Biomaterials Lab Department of Wood ScienceUniversity of British Columbia2424 Main MallVancouver V6T 1Z4Canada Department of Chemical and Petroleum Engineering University of Calgary2500 University DriveNWCalgaryAlberta T2N 1N4Canada

The global commitment to pivoting to sustainable energy and products calls for technology development to utilize solar energy for hydrogen(H_(2))and value-added chemicals production by biomass ***,a novel dual-functional marigold-like Zn_(x)Cd_(1-x)S homojunction has been the production of lactic acid with high-yield and H_(2)with high-efficiency by selective glucose *** optimized Zn_(0.3)Cd_(0.7)S exhibits outstanding H_(2)generation(13.64 mmol h^(-1)g^(-1)),glucose conversion(96.40%),and lactic acid yield(76.80%),over 272.80 and 19.21 times higher than that of bare ZnS(0.05 mmol h^(-1)g^(-1))and CdS(0.71 mmol h^(-1)g^(-1))in H_(2)generation,*** marigold-like morphology provides abundant active sites and sufficient substrates accessibility for the photocatalyst,while the specific role of the homojunction formed by hexagonal wurtzite(WZ)and cubic zinc blende(ZB)in photoreforming biomass has been demonstrated by density functional theory(DFT)*** is converted to lactic acid on the WZ surface of Zn_(0.3)Cd_(0.7)S via the photoactive species·O_(2)^(-),while the H_(2)is evolved from protons(H^(+))in H_(2)O on the ZB surface of Zn_(0.3)Cd_(0.7)*** work paves a promising road for the production of sustainable energy and products by integrating photocatalysis and biorefine.

关键词： Zn_(x)Cd_(1-x)S homojunction Selective glucose photoreforming biomass valorization Sustainable H_(2) Photoreforming mechanism

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Controllable Synthesis of Monodisperse Hierarchical Porous Carbon Nanorods and Their Derived Superstructures for Supercapacitors

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SSRN 2024年

作者： Xu, Zhou Chi, Junlin Wu, Zhenwei Yang, Zheng Miao, Yuanyuan Ma, Chunhui Li, Wei Luo, Sha Liu, Shouxin Key Laboratory of Bio-based Material Science & Technology Northeast Forestry University Ministry of Education Heilongjiang Harbin150040 China

biomass porous nanocarbons has a promising application in electrochemistry. However, controlling the morphology and pore structure presents a formidable challenge. Monodisperse hierarchical porous carbon nanorods (HPCNs) are synthesized from D-xylose, sodium dodecyl sulfate and poly (4-styrenesulphonic acid-co-maleic acid) sodium salt in the hydrothermal condition, followed by activation of KHCO3. Similarly, raspberry-like and spindle-like hierarchical porous nanocarbons can be obtained using sodium laurate and sodium oleate instead of sodium dodecyl sulfate. The hierarchical porous structure facilitates the infiltration and mass transfer process and improves electrochemical performance. In a 6 mol·L-1 KOH electrolyte, the specific capacitance of the HPCNs reaches 302 F·g-1 at a current density of 0.2 A·g-1, and the retention rate is 97% after 6000 charge-discharge cycles at 10 A·g-1. In a pure 1-butyl-3-methylimidazolium tetrafluoroborate electrolyte, a symmetric supercapacitor assembled with HPCNs exhibits a specific capacitance of 125 F·g-1 and an energy density of 39.06 W·h·kg-1 at 0.1 A·g-1. © 2024, The Authors. All rights reserved.

关键词： Supercapacitor

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Effective purification of oily wastewater using lignocellulosic biomass:A review

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Chinese Chemical Letters 2022年第6期33卷 2807-2816页

作者： Meng Wang Hsu-Sheng Tsai Chaofan Zhang Chengyu Wang Shih-Hsin Ho State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150001China Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Bio-based Material Science& Technology(Northeast Forestry University) Ministry of EducationHarbin 150040China

Due to the frequent occurrence of oil spills and the large-scale production of oily wastewater, the treatment of oily sewage has become an important issue for sustainable development. Recently, materials prepared from lignocellulosic biomass(LCB) for oil-water separation have been found to be effective due to their high separation efficiency, good recyclability, and superior sustainability. However, few reviews have focused on the advantages and limitations of LCB for sewage treatment. This review summarizes the performance of modified LCB in oily wastewater treatment, in terms of the advanced modification methods applied and the structural dimensions of LCB materials according to the principle of superwetting oil-water separation. Research on the preparation technologies, separation mechanisms, and treatment efficiency of different LCB materials are briefly summarized, along with the characteristics of different LCB material types for oily wastewater treatment. Finally, the future prospects and challenges faced in the development of LCB materials are discussed.

关键词： Lignocellulosic biomass Superwetting Oily wastewater Wastewater treatment Oil-water separation

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A H_(4)SiW_(12)O_(40)-catalyzed three-component tandem reaction for the synthesis of 3,3-disubstituted isoindolinones

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Chinese Chemical Letters 2024年第1期35卷 233-236页

作者： Yufeng Liu Guodong Zeng Yutao Cheng Lei Chen Yunhai Liu Yongge Wei Guoping Yang School of Chemistry Biology and Material ScienceJiangxi Province Key Laboratory of Synthetic ChemistryJiangxi Key Laboratory for Mass Spectrometry and InstrumentationEast China University of TechnologyNanchang 330013China Key Lab of Organic Optoelectronics&Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

A H_(4)SiW_(12)O_(40)-catalyzed three-component tandem reaction of 2-acylbenzoic acids,primary amines and phosphine oxides to form 3,3-disubstituted isoindolinones was *** employing A H_(4)SiW_(12)O_(40)as the catalyst and dimethyl carbonate(DMC)as the solvent,a diverse range of 2-acylbenzoic acid derivatives and primary amines worked well to give the C3-phosphinoyl-functionalized 3,3-disubstituted isoindolinones with the yield range of 61%-87%.Advantages of this transformation include green catalyst and solvent,available starting materials,broad substrate scope,high efficiency and operational simplicity with water as the sole *** strategy achieved an efficient and green molecular fragment assembly to access isoindolinones,which would provide opportunities for the synthesis of potential biologically active molecules in a green manner.

关键词： Polyoxometalates Dehydrative coupling Three-component tandem reaction 3,3-Disubstituted isoindolinones Organic carbonate

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Manganese vanadium oxide composite as a cathode for high-performance aqueous zinc-ion batteries

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Chinese Chemical Letters 2024年第9期35卷 491-495页

作者： Jiayu Bai Songjie Hu Lirong Feng Xinhui Jin Dong Wang Kai Zhang Xiaohui Guo Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Shaanxi Key Laboratory for Carbon Neutral TechnologyThe College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710069China Sustainable Materials and Chemistry Dept.Wood Technology and Wood-based CompositesUniversity of GoettingenWilhelmsplatz 1(Aula)37073 GötingenGermany

The development of clean renewable energy and energy storage devices is of great significance under the present energy crisis and environmental pollution *** zinc-ion battery(ZIB)has become one of the most promising energy storage devices due to its high capacity,safety and low ***,the application of ZIB cathode is usually limited by low capacity and poor ***,we propose a novel heterostructure MnO/MnV_(2)O_(4)composite material composed of MOF derivatives and spinel with dual active components as cathode for *** from substantial framework of MOF derivatives and the synergistic effect of heterostructures,MnO/MnV_(2)O_(4)exhibits excellent rate performance(342 m Ah/g at 0.1 A/g,261 mAh/g at 15 A/g)and cycling performance(198.9 mAh/g at 10 A/g after 2000 cycles)in3 mol/L Zn(CF_(3)SO_(3))*** work extends the range of developing high-performance cathodes for ZIBs under high current density and is expected to enlighten the optimization of commercial energy storage devices.

关键词： Metal organic framework Manganese oxides Heterostructure Cathode Zinc ion battery

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Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene

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Chinese Journal of Polymer science 2024年第5期42卷 612-619,I0007页

作者： Shi-Liang Xu Ying-Nan Zhao Yao Yu Qi Yang Li-Hua Na Heng Liu Chun-Yu Zhang Xue-Quan Zhang Key Laboratory of Advanced Rubber Material Ministry of EducationSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China Shandong Provincial College Laboratory of Rubber Material and Engineering School of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China Key Lab of Rubber-Plastics Ministry of Education/Shandong Provincial Key Lab of Rubber-plasticsSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China

In this study,a novel iron-based catalyst system,Fe(acac)3/(isocyanoimino)triptenylphosphorane(IITP)/AlR3,was employed for the synthesis of syndiotactic 1,2-polybutadiene in *** catalyst system exhibits remarkably high catalytic activity,achieving a polymerization activity of 762 kgpolymer·molcatalyst^(-1)·h^(-1)at 50℃with a[BD]/[Fe]molar ratio of ***,living polymerization characteristic were observed during the investigation of the polymerization kinetics of 1,3-butadiene *** characteristics were well demonstrated by a narrow molecular weight distribution(PDI≈2.0)of the resulting polybutadiene and a linear relationship between-ln(1-c)and polymerization time as well as number average molecular weight and polymer *** resultant polymer showed a 1,2-selectivity of approximately 76%and stereoregularity ranging from 62%to 73%(rrrr).Additionally,through kinetic studies on polymerization reaction,an apparent activation energy Ea value of this catalytic system was calculated to be 84.98 kJ·mol^(-1),which suggests that high polymerization temperature favors efficient polymerization.

关键词： Iron catalyst Syndiotactic 1,2-polybutadiene Elastomers Donor Selectivity

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Modifying Urea-Formaldehyde Resin with Ultra-Low Formaldehyde Emission Via Glyoxal Copolymerization and Urea Post-Addition

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SSRN 2024年

作者： Zhao, Jin Wang, Hang Kan, Yufei Gao, Zhenhua Key Laboratory of Bio-based Material Science and Technology Ministry of Education Northeast Forestry University Harbin150040 China Key Laboratory of Lignocellulosic Material Science and Technology of Heilongjiang Province Harbin150040 China

Although urea-formaldehyde (UF) resin is extensively used in the wood industry for its cost-effectiveness, good bonding performance, and excellent technological applicability, achieving a reduction in formaldehyde emission to levels comparable with non-formaldehyde adhesives while maintaining cost efficiency remains a significant challenge. In this study, a novel glyoxal-urea-formaldehyde (GUF) resin with ultra-low formaldehyde release, good cold-pressing performance, and excellent bonding properties was developed via a synergistic strategy involving the glyoxal copolymerization and urea post-addition. FTIR, 13C NMR, XPS, and DSC analyses revealed that the copolymerization of glyoxal, formaldehyde, and urea led to the formation of more substituted hydroxymethyl structures. These structures enhanced the cross-linking reaction between GUF resin and post-added urea, resulting in a significant reduction in formaldehyde emission from GUF-bonded plywood to 0.20 mg/L. This value is 33% lower than the 0.3 mg/L required for F**** grade plywood, according to Japanese JAS standards. Additionally, the GUF-bonded plywood maintained a warm water-soaked wet strength of 0.74 MPa and a cold-pressing strength of 0.82 MPa. The optimal conditions identified were 10 mol.% of glyoxal for copolymerization and 4.5 wt.% of post-added urea. This synergistic strategy offers a cost-effective approach to substantially reducing formaldehyde emission from UF resin, demonstrating promising potential for broad application in the production of wood composites. © 2024, The Authors. All rights reserved.

关键词： Plywood

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