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SSRN 2024年

作者： Wu, Chen Jiang, Weikun Xia, Mengyao Liu, Hui Zhang, Tao Ma, Jiliang Liu, Yu State Key Laboratory of Bio-based Materials and Green Papermaking Key Laboratory of Pulp & Paper Science and Technology of Shandong Province Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan250353 China Department of General Surgery The First Affiliated Hospital of Shandong First Medical University Jinan250014 China Liaoning Key Laboratory of Lignocellulose Chemistry and Biomaterials Dalian Polytechnic University Liaoning Dalian116034 China

Phenolic resin (PR) nanomaterials, which serve as excellent carriers for precious metals, are typically synthesized via the cross-linked reaction of phenol and formaldehyde, and both are toxic. Therefore, replacing them with whole biomass-based materials is an attractive alternative;however, it has proven to be a significant challenge. In this study, we successfully prepared versatile Ag-based resin nanocomposites (referred to as TFR@Ag) by utilizing whole biomass-based tannin and furfural as raw feedstock. The resulting TFR nanospheres exhibited high stability and uniformity, with tunable sizes ranging from 280 to 1430 nm by adjusting the amount of ammonia used in the synthesis process. Importantly, compared to traditional PR nanospheres, the novel and environmentally friendly TFR nanospheres possess abundant phenolic-OH groups that significantly enhance their adsorption, reduction and chelation capacity for Ag+. The highest loading amount of silver nanoparticles (Ag NPs) achieved was up to 60.3 wt.% with a size of only 10.6 nm. The as-obtained TFR@Ag nanocomposites demonstrated excellent catalytic activity in treating typical hazardous dye-containing wastewater. The reaction rate constants reached values of 1.71 min-1 and 2.40 min-1 for methylene blue (MB) and methyl orange (MO), respectively. Moreover, as antibacterial agents, the TFR@Ag nanocomposite effectively inhibited the growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) with a bacterial inhibition rate close to 100%. This work presents a new strategy for green synthesis of multi-functional Ag-based nanocomposites that hold great potential in various fields such as catalysis, nanomaterials science and biomedicine. © 2024, The Authors. All rights reserved.

关键词： Flavonoids

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Novel Dopamine-Modified Cellulose Acetate Ultrafiltration Membranes with Improved Separation and Antifouling Performances

Research Square

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Research Square 2021年

作者： Ma, Xi Guo, Hanxiang Wang, Zhaofeng Sun, Nan Huo, Pengfei Gu, Jiyou Liu, Yang Key Laboratory of Bio-based Materials Science & Technology Ministry of Education College of Material Science and Engineering Northeast Forestry University Harbin150040 China

Cellulose derivatives are the earliest and most widely used membrane materials due to its many excellent characteristics, especially chemical activity and biodegradability. However, the hydrophobic properties of cellulose acetate (CA) limited its development to some extent. To improve the inherent hydrophobic and antifouling properties of the CA membrane, CA was successfully modified with dopamine (CA-2,3-DA) through selective oxidation and Schiff base reactions in this work, which was confirmed by 1H NMR and FTIR measurements. And then, the CA-2,3-DA membrane with high water permeability and the excellent antifouling property was prepared by the phase inversion method. Compared with the primordial CA membrane, the CA-2,3-DA membrane maintained a higher rejection rate for BSA (92.5%) while greatly increasing the pure water flux (167.3 L/m2h), which could be overcome the trade-off relationship between selectivity and permeability of the traditional CA membrane to a certain extent. According to the three-cycles dynamic ultrafiltration and static protein adsorption experiments, the CA-2,3-DA membrane showed good long-term performance stability and superior antifouling performance, which was supported by the experiment results including filtration resistance, flux decline ratio and flux recovery ratio. It is expected that this approach can greatly expand the high-value utilization of modified natural organic polysaccharides in separation engineering. © 2021, CC BY.

关键词： Membranes

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Engineering Flame Retardant Epoxy Resins with Strengthened Mechanical Property by Using Reactive Catechol Functionalized Dopo Compounds

SSRN

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SSRN 2023年

作者： Jiao, Delai Zhao, Hengji Sima, Haofei Cheng, Chunzu Liu, Bo Zhang, Chunling School of Materials Science and Engineering Jilin University Changchun130022 China Key Laboratory of Bionic Engineering Ministry of Education Jilin University Changchun130022 China State Key Laboratory of Bio–Based Fiber Manufacturing Technology China Textile Academy Beijing100025 China

In this work, we synthesized a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) derivative flame retardant dopamine modified DOPO (DOPO-DA) for flame retardant thermosetting epoxy resins (EP). The effects of different amounts of flame retardants on the flame retardancy, thermal properties, and mechanical properties of EP composites were studied. Compared with the control EP, the peak heat release rate (PHRR) of EP/5 wt% DOPO-DA decreased by 26.1%. In addition, EP/5wt% DOPO-DA reached V-0 level. It can be attributed to the quenching effect of P element and catechol groups in DOPO-DA, reducing the active free radicals. N element can release non-combustible gases to dilute the concentration of oxygen. Meanwhile, P element can promote the formation of a dense carbon protective layer and slow down the heat and oxygen transfer on the surface. In addition, DOPO-DA can also participate in the crosslinking reaction of EP as a curing promoter, reducing crosslinking density and improving tensile properties. © 2023, The Authors. All rights reserved.

关键词： Epoxy resins

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Corrigendum to "Multifunctional films based on tannic acid-coated cellulose nanocrystals and zinc-coating reinforced sodium carboxymethyl cellulose/polyvinyl alcohol for food active packaging" [Int. J. biol. Macromol. 302 (2025) 140587]

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International journal of biological macromolecules 2025年第PT 2期305卷 141195页

作者： Xiaodong Wang Jun Shen Dezong Zheng Fei Qi Lin Li Key Lab of Bio-based Material Science and Technology (Ministry of Education) College of Material Science and Engineering Northeast Forestry University Harbin 150040 China. Key Lab of Bio-based Material Science and Technology (Ministry of Education) College of Material Science and Engineering Northeast Forestry University Harbin 150040 China. Electronic address: shenjunr@***.

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Structure and Performance of Ce-nano PO_4^(3-)/ZrO_2 Solid Acid Catalyst for Producing biodiesel

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Chinese Journal of Structural Chemistry 2019年第3期38卷 390-407页

作者： HAO Yi-Nan XING Dong PAN Yan-Fei WANG Xi-Ming YAO Li-Hong College of Material Science and Art Design Inner Mongolia Agricultural University Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University) Ministry of Education

The biodiesel prepared from Xanthoceras Sorbiflia Bunge Oil catalyzed by Ce doped nano PO_4^(3-)/ZrO_2 was investigated. A maximum biodiesel yield of 91.83% was achieved at the concentration of Ce^(3+) up to 0.1 mol/L, calcination temperature 500 °C, calcination time 3.0 h, and the concentration of phosphoric acid of 3.5 mol/L. Ce-nano PO_4^(3-)/ZrO_2 catalyst activities were correlated with the observed physico-chemical characteristics derived from scanning electron microscopy(SEM), FT-infrared(FT-IR), X-ray diffraction(XRD), thermogravimetric(TG) and Brunauer-Emmett-Teller(BET) analysis. The delayed crystallization of ZrO_2 made surface oxides have more defects which were beneficial to the adsorption of PO_4^(3-) by the concentration increment of Ce^(3+). The chemical composition of synthesized biodiesel was confirmed by gas chromatography(GC). The characteristics of Xanthoceras Sorbiflia Bunge oil were found within the optimal range in accordance with Chinese No. 0 diesel standard as a substitute diesel fuel.

关键词： xanthoceras sorbiflia bunge biodiesel Ce doped nano PO43-/ZrO2 yield

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"All-in-One" Carbon Dot-based Catalyst for Converting Co2 to Cyclic Carbonates

SSRN

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SSRN 2023年

作者： Wang, Ruijia Wan, Jianyong Guo, Hongda Tian, Bing Li, Shujun Li, Jian Liu, Shouxin James, Tony D. Chen, Zhijun Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin150040 China Department of Chemistry University of Bath BathBA2 7AY United Kingdom School of Chemistry and Chemical Engineering Henan Normal University Xinxiang453007 China

Converting CO2 with various epoxides to cyclic carbonates is extremely important. However, most of catalysts for such conversion either require complicated fabrication or are obtained from unsustainable sources. Motivated by this problem, we prepare biomass-based "all-in-one" carbon dots as nano-organocatalysts for firstly converting CO2 to cyclic carbonates. In this work, carbon dots (CD@KI) with high catalytic performance and good recyclability are prepared from sodium phytate (SP), polyethylenimine (PEI) and KI using one-pot hydrothermal treatment featuring cheap precursors and simple operation. Assisted by highly catalytic activity of CD@KI, up to 99.5% yield is achieved for converting CO2 and various epoxides to cyclic carbonates under mild conditions (solvent-free and 1 atm of CO2). Moreover, the conversion yield is maintained for reactions up to ten grams in scale. Significantly, by taking advantage of the inherent luminescence of CD@KI, the as-formed cyclic carbonates catalyzed by CD@KI can be directly converted to afterglow polymer composites. © 2023, The Authors. All rights reserved.

关键词： Carbon dioxide

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2,5-Furandicarboxylic acid production via catalytic oxidation of 5-hydroxymethylfurfural:Catalysts,processes and reaction mechanism

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Journal of Energy Chemistry 2021年第3期30卷 528-554页

作者： Chunlin Chen Lingchen Wang Bin Zhu Zhenqiang Zhou Soliman I.El-Hout Jie Yang Jian Zhang Ningbo Institute of Materials Technology&Engineering CAS1219 Zhongguan West RoadNingbo 315201ZhejiangChina University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo 315201ZhejiangChina Nano Science and Technology Institute University of Science and Technology of China166 Renai RoadSuzhou 215123JiangsuChina Nanomaterials and Nanotechnology Department Advanced Materials DivisionCentral Metallurgical Research and Development Institute CMRDIHelwan 11421Egypt

biomass conversion to value-added chemicals has received tremendous attention for solving global warming issues and fossil fuel depletion.5-Hydroxymethylfurfural(HMF)is a key bio-based platform molecule to produce many useful organic chemicals by oxidation,hydrogenation,polymerization,and ring-opening *** all derivatives,the oxidation product 2,5-furandicarboxylic acid(FDCA)is a promising alternative to petroleum-based terephthalic acid for the synthesis of biodegradable *** review analytically discusses the recent progress in the thermocatalytic,electrocatalytic,and photocatalytic oxidation of HMF into FDCA,including catalyst screening,synthesis processes,and reaction *** fundamental advances may be possible in non-precious metal and metal-free catalysts that are highly efficient under the base-free conditions,and external field-assisted processes like electrochemical or photoelectrochemical cells.

关键词： 5-Hydroxymethylfurfural 2,5-Furandicarboxylic acid Catalytic oxidation Mechanism

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Effects of Different Oxidation Systems on the Interfacial Properties of Bamboo Fiber/Epoxy Resin Composites

SSRN

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SSRN 2023年

作者： Ding, Runzi Liu, Xueying Yu, Haijiao Shi, Sheldon Q. Han, Guangping Cheng, Wanli Key Laboratory of Bio-based Material Science & Technology Northeast Forestry University Ministry of Education Harbin150040 China Mechanical Engineering Department University of North Texas UNT Discovery Park 3940 North Elm St. Suite F101P TX76207-7102 United States

The objective of this study is improving the interfacial properties of bamboo fabric (BF)/epoxy (EP) composites to enhance their mechanical properties. BF was treated with 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation system and N-hydroxyphthalimide (NHPI) oxidation system, respectively, to obtain BFO- T and BFO- N oxidation products with different surface morphologies. The effects of different oxidation treatments on the tensile strength (σc) and elongation at break (Εc) of the composites were evaluated. Compared to the untreated BF/EP samples, the σc of BFO- T/EP was increased by 56.9% while the increase in Εc change was not significant. The σc of BFO- N/EP was increased by 30.1%, but the improvement of Εc reached 473.7%. The results of single-yarn pull-out tests and atomic force microscopy indicated that appropriately sized grooves could be the key to the strength increase of the two-phase interface. The larger size of the grooves allows resin to infiltrate and fill the voids, forming occlusal structures that strengthen the interfacial bonding. Small-sized grooves are not conducive to resin impregnation, and therefore voids are formed at the interface between the two phases, which impedes load transfer. © 2023, The Authors. All rights reserved.

关键词： Epoxy composites

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Converting a Dilute Slurry of Hollow Tube-like Papermaking Fibers into Dynamic Hydrogels

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Journal of bioresources and bioproducts 2019年第4期4卷 214-221页

作者： Zhongfei YUAN Hongjia LIN Xueren QIAN Jing SHEN Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040China

Commercially,assembly-directed packing of hollow tube-like papermaking fibers with widths of roughly 10–50μm)into sustainable microfibrous bioassemblies(i.e.,paper-based products)starts with a dilute fiber *** this process,a huge amount of water is required to disperse and transport fibers,which also facilitates colloidal interactions and formation of interfiber *** form bioassemblies in their dry states,unit operations associated with dewatering and drying are routine practices,and treatment of the generated wastewater is a *** herein present a facile,easily scalable concept of converting fiber slurry into dynamic hydrogels by using chemical additives(similar to papermaking wet-end additives),but without water *** used a typical group of additives as an example in an attempt to demonstrate the applicability of the *** boron-based dynamic chemistry as a key theoretical foundation,the combination of crosslinking and hydrogen bonding can lead to the formation of phase-reversible,self-healable,and stretchable ***,the characteristics of hydrogels are facilely tunable,and process parameters such as polymer dosage are rather *** is worth noting that fibers can act as a structural skeleton or mechanical support for tailorable design of *** concept demonstrated in this study provides insights into value-added utilization of mass-producible biopolymeric fibers in accordance with existing industrial ***-based hydrogels would find use in diversified applications:toys,3D/4D printing materials,soft robots,drug delivery systems,among others.

关键词： papermaking fibers colloidal interactions dynamic hydrogels self-healability value-added applications

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Boosting Electricity Generation of Non-Classical Electroactive Microorganisms Enabled by Carbon Dots

SSRN

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SSRN 2022年

作者： Zhang, Siyu Zhao, Xinpeng Guo, Xinqi Zhang, Gaoqi Li, Tianchong Xu, Shiyu Zhao, Yufu Li, Jian Liu, Shouxin Chen, Zhijun Li, Shujun Yang, Chenhui Engineering Research Center of Advanced Wooden Materials Key Laboratory of Bio-based Material Science & Technology of Ministry of Education Northeast Forestry University Harbin150040 China Academy of Quality Inspection and Research Heilongjiang Province Harbin150028 China

Producing electricity via microorganisms is promising as sustainable and cheap energy supplier. However, most of the reported classical electroactive microorganisms are unusual in the environment, hindering their practical application. Here, we used carbon dots (CDs) to boost the power generation of common in the natural environment, but non-classical electroactive microorganisms, such as Escherichia coli and Staphylococcus aureus. The CDs, which have good biocompatibility and high electron transfer, are taken up by bacterial cells and enable electrons to migrate rapidly to the ambient electrode because of the formation of robust electron transfer networks. The CDs promote electrochemical redox activity and increase the internal charge generation, as well as reduce the electrochemical impedance of the bacteria. As a result, the CDs facilitate rapid and high power generation in the microbial chemical cells and microbial fuel cells, with a nearly 94-fold and 172-fold improvement in current and power output compared with unmodified Escherichia coli. This work offers an important strategy for enhancing generation of bioelectricity and also facilitates functional optimization of technologies that depend on microbial electron transfer. © 2022, The Authors. All rights reserved.

关键词： Microbial fuel cells

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