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Specific Ion Effects on the Enzymatic Degradation of Polyester Films

Chinese Journal of Polymer Science 2023年第4期41卷 476-482,I0005页

作者： Jian Zhang Jie Zhu Zan Hua Guang-Ming Liu Department of Chemical Physics Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education InstitutesUniversity of Science and Technology of ChinaHefei230026China Key Laboratory of Yarn materials Forming and Composite Processing Technology of Zhejiang Province College of Material and Textile EngineeringJiaxing UniversityJiaxing314001China biomass Molecular engineering center and Department of materials Science and engineering School of Forestry and Landscape ArchitectureAnhui Agricultural UniversityHefei230036China

Soil environment on earth contains a variety of ions,which are expected to play a vital role in the biodegradation of plastics discarded in the *** this work,poly(butyleneadipate-co-terephthalate)(PBAT)is employed as a model biodegradable plastic to study the specific ion effects on the enzymatic degradation of polyester *** results show that the specific ion effects on the enzymatic degradation rate of the PBAT films and on the catalytic rate constant for the enzymatic hydrolysis of the ester bonds are strongly dependent on temperature and ionic *** the enzymatic degradation rate and catalytic rate constant decrease following the trends Na^(+)>K^(+)>Ca^(2+)and Cl^(-)>SO_(4)^(2-)>NO_(3)^(-)for cations and anions,respectively,indicating that the ion-specific enzymatic degradation of the PBAT films is closely correlated with the specific ion effects on enzymatic hydrolysis of the ester *** study shows that the specific ion effects on the enzyme activity can be understood by taking into account the ion-specific cation-anion interaction,ionic dispersion force,salting-out effect and salting-in *** study of specific ion effects on the enzymatic hydrolysis of the ester bonds and the resultant enzymatic degradation of the PBAT films would offer us a new clue to develop new biodegradable,environmentally friendly synthetic plastics.

关键词： Specific ion effects Biodegradable films Ion-enzyme interactions Enzyme activity

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Bi_(2)S_(3)Nanorods Hosted on rGO Sheets from Pyrolysis of Molecular Precursors for Efficient Li-Ion Storage

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Energy & Environmental materials 2021年第4期4卷 577-585页

作者： Zhongshuang Li Mengmeng He Bing Bo Huijuan Wei Yanyan Liu Hao Wen Yushan Liu Ke Zhang Panke Zhang Baojun Li research center of Green Catalysis College of ChemistryZhengzhou UniversityZhengzhou 450001China School of Food Science and Technology Standardization and Quality Inspection CenterHenan University of TechnologyZhengzhou 450001China National engineering Laboratory for biomass Chemical Utilization Institute of Chemical Industry of Forest ProductsChinese Academy of ForestryNanjing 210042China

Bismuth-based compounds with high capacity and durability are still challenging in Li-ion batteries(LIBs).In this article,Bi_(2)S_(3)nanorods hosted on reduced graphene oxide nanosheets(Bi_(2)S_(3)/rGO,BSG)are successfully prepared using molecular precursor pyrolysis strategy.1D nanorod architecture possesses preeminent kinetic characteristics,shortening the ion diffusion path and increasing the contact area between electrode and *** large specific surface area and charge polarization of rGO at the interface promote charge *** capacity of material(BSG-400)reaches 558.4 m Ah g^(-1)at 0.2 A g^(-1)after 200 *** anode properties of the composite outperform those of pristine Bi_(2)S_(3).The introduction of graphene enables the interfacial interaction between rGO and Bi_(2)S_(3).The closely contact interface improves the conductivity and lithium storage performances of Bi_(2)S_(3).The regulatory effect of rGO on the electronic density of states and band gap of Bi_(2)S_(3)has been demonstrated by theoretical *** synthetic approach has the advantages of universality,simple operation procedure,and strong *** research provides some ideas for the preparation of other metal sulfides/rGO nanomaterials and their application in battery research.

关键词： Bi_(2)S_(3) Li-ion batteries molecular precursor nanorods pyrolysis reduced graphene oxide

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A Mini-review for the Application of Bacterial Cellulose-based Composites

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Paper And Biomaterials 2023年第1期8卷 1-11页

作者： Weiyin Su Zhixin Wang Zeyu Chang Yawen Feng Xi Yao Meng Wang Kun Wang Jianxin Jiang MOE engineering research center of forestry biomass materials and bioenergy College of Materials Science and TechnologyBeijing Forestry UniversityBeijing100083China International Centre for Bamboo and Rattan Beijing100102China China National Pulp and Paper research Institute Co. Ltd.Beijing100102China

Countries are duly focusing more on biomass resources because of the increasing oil *** to their excellent properties,such as natural characteristics,good mechanical performance,and outstanding chemical properties,cellulose-based materials are highly valued as promising bioderived nanomaterials,especially bacterial cellulose(BC).The main advantage lies in eliminating the problem of removing lignin and hemicellulose from woody ***,the use of BC reduces the consumption of wood,the excessive use of which aggravates global ***,we summarize the applications of BC composites in filter,medical,and conductive materials,and other *** review contributes to further expand the applications of this renewable polymer.

关键词： bacterial cellulose functional composites application sustainable materials

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Flexible,durable,and anti-fouling nanocellulose-based membrane functionalized by block copolymer with ultra-high flux and efficiency for oil-in-water emulsions separation

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Nano research 2023年第4期16卷 5665-5675页

作者： Jianfei Wu Yuxuan Su Ziwei Cui Yang Yu Jiafu Qu Jundie Hu Yahui Cai Jianzhang Li Dan Tian Qichun Zhang Co-Innovation center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of materials Science and engineering Suzhou University of Science and TechnologySuzhou 215009China Department of materials Science and engineering&center of Super-Diamond and Advanced Films(COSDAF) City University of Hong KongHong Kong 999077China

The clearwater obtained from stabilized oily wastewater has become a worldwide ***,the area of oil/water emulsion separation materials have accomplished great progress,but still faces the enormous problems of low flux,poor stability,and pollution ***(cellulose nanocrystals(CNC))with the advantages of hydrophilicity,ecofriendliness,and regeneration are ideal materials for the construction of separation *** this paper,a flexible,antifouling,and durable nanocellulose-based membrane functionalized by block copolymer(poly(N-isopropylacrylamide)-b-poly(N,Ndimethylaminoethyl methacrylate))is prepared via chemical modification and self-assembly,showing high separation efficiency(above 99.6%)for stabilized oil-in-water emulsions,excellent anti-fouling and cycling stability,high-temperature resistance,and acid and alkali *** importantly,the composite membrane has ultra-high flux in separating oil-in-water emulsions(29,003 L·m^(−2)·h^(−1)·bar^(−1))and oil/water mixture(51,444 L·m^(−2)·h^(−1)·bar^(−1)),which ensures high separation *** its durability,easy scale-up,and green regeneration,we envision this biomass-derived membrane will be an alternative to the existing commercial filter membrane in environmental remediation.

关键词： nanocellulose-based membrane oil/water emulsions separation ultra-high flux good durability anti-fouling property

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Crystallization and viscosity-temperature characteristics during co-gasification of industrial sludge and coal

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Frontiers in Energy 2022年第6期16卷 1037-1047页

作者： Linmin ZHANG Bin LIU Juntao WEI Xudong SONG Yonghui BAI Jiaofei WANG Ying ZHOU Huijun YANG Guangsuo YU State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021China Joint International research Laboratory of biomass Energy and materials Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Institute of Coal Chemical Industry Technology Ningxia Coal Industry Co.Ltd.Yinchuan 750000China Institute of Clean Coal Technology East China University of Science and TechnologyShanghai 200237China

Co-gasification of industrial sludge(IS)and coal was an effective approach to achieve harmless and sustainable utilization of *** long-term and stable operation of a co-gasification largely depends on fluidity of coal-ash ***,the effects of IS addition on the crystallization and viscosity of Shuangmazao(SMZ)coal were investigated by means of high temperature stage coupled with an optical microscope(HTSOM),a scanning electron microscopy coupled with an energy dispersive Xray spectrometry(SEM-EDS),X-ray diffraction(XRD),a Fourier transform infrared spectrometer(FTIR),and FactSage *** results showed that when the proportion of IS was less than 60%,with the addition of IS,the slag existed in an amorphous *** was due to the high content of SiO_(2) and Al_(2)O_(3) in SMZ ash and blended ash,which had a high glass-forming ability(GFA).The slag formed at a high temperature had a higher polymerization degree and viscosity,which led to a decrease in the migration ability between ions,and ultimately made the slag difficult to crystallize during the *** the proportion of IS was higher than 60%,the addition of IS increased the CaO and FeO content in the *** network modifiers,CaO and FeO could provide O^(2−)at a high temperature,which reacted with silicate network structure and continuously destroyed the complexity of network structure,thus reducing the polymerization degree and viscosity of *** this time,the migration ability between ions was enhanced,and needle-shaped/rod-shaped crystals were precipitated during the cooling ***,the viscosity calculated by simulation and Einstein-Roscoe empirical formula demonstrated that the addition of IS could significantly improve the fluidity of coal ash and meet the requirements of the liquid slag-tapping *** purpose of this work was to provide theoretical support for slag flow mechanisms during the gasifier slagging-tapping process and the resource treatment of industrial s

关键词： co-gasification industrial sludge crystallization viscosity mineral matter evolution

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Carbon-based single-atom catalysts in advanced oxidation reactions for water remediation:From materials to reaction pathways

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Eco-Environment & Health 2023年第2期2卷 47-60页

作者： Junjie Zhang Xu Tang Yongjia Hong Guanyu Chen Yong Chen Li Zhang Wenran Gao Yang Zhou Bin Sun State Key Laboratory of Organic Electronics and Information Displays Institute of Advanced Materials(IAM)School of Material Science and EngineeringNanjing University of Posts and TelecommunicationsNanjing 210023China Joint International research Laboratory of biomass Energy and materials Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China

Single-atom catalysts(SACs)have been widely recognized as state-of-the-art catalysts in environment remediation because of their exceptional performance,100%metal atomic utilization,almost no secondary pollution,and robust *** recently,the activation of persulfate with carbon-based SACs in advanced oxidation processes(AOPs)raises tremendous interest in the degradation of emerging contaminants in wastewater,owning to its efficient and versatile reactive oxidant species(ROS)***,the comprehensive and critical review unraveling the underlying relationship between structures of carbon-based SACs and the corresponding generated ROS is still ***,we systematically summarize the fundamental understandings and intrinsic mechanisms between single metal atom active sites and produced ROS during *** types of emerging contaminants are firstly elaborated,presenting the prior pollutants that need to be ***,the preparation and characterization methods of carbon-based SACs are *** underlying material structure–ROS type relationship in persulfate-based AOPs is discussed in depth to expound the catalytic ***,we briefly conclude the current development of carbon-based SACs in AOPs and propose the prospects for rational design and synthesis of carbon-based SACs with on-demand catalytic performances in AOPs in future research.

关键词： Single-atom catalysts Emerging contaminants Advanced oxidation processes Persulfate activation Reactive oxidant species

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The modulating effect of N coordination on single-atom catalysts researched by Pt-N_(x)-C model through both experimental study and DFT simulation

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Journal of materials Science & Technology 2021年第32期91卷 160-167页

作者： Mengmeng Fan Jiewu Cui Junjie Zhang Jingjie Wu Shuangming Chen Li Song Zixing Wang Ao Wang Robert Vajtai Yucheng Wu Pulickel MAjayan Jianchun Jiang Dongping Sun Nanjing forestry University Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest ResourcesCollege of Chemical EngineeringNanjing 210037China Rice University Department of Materials Science and NanoEngineeringHoustonTX 77005USA Hefei University of Technology School of Materials Science and EngineeringHefei 230009China University of Cincinnati Department of Chemical and Environmental EngineeringCincinnatiOH 45221USA University of Science and Technology of China National Synchrotron Radiation LaboratoryCAS Center for Excellence in NanoscienceHefei 230026China Nanjing University of Science and Technology Chemicobiology and Functional Materials InstituteNanjing 210094China Key Lab of biomass Energy and Material Jiangsu ProvinceJiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesInstitute of Chemical Industry of Forest ProductsChinese Academy of ForestryNanjing 210042China

N-doped carbon-based single-atom catalysts(NC-SACs) are widely researched in various electrochemical reactions due to high metal atom utilization and catalytic *** catalytic activity of NC-SACs originates from the coordinating structure between single metal site(M) and the doped nitrogen(N) in carbon matrix by forming M-N_(x)-C structure(1≤x≤4).The M-N4-C structure is widely considered to be the most stable and effective catalytic ***,there is no in-depth research for the "x" modulation in Pt-Nx-C structure and the corresponding catalytic ***,atomically dispersed Pt on N-doped carbon(Pt-NC) with Pt-Nx-C structure(1≤x≤4),as a research model,is fabricated by a ZIF-8 template and applied to catalytic oxygen *** carbonization temperatures are used to control N loss,and then modulate the N coordination of Pt-Nx-C *** Pt-NC has the predictable low half-wave potential(E_(1/2)) of 0.72 V vs RHE compared to the Pt/C 20% of 0.81 V due to low Pt ***,the Pt-NC shows a high onset potential(1.10 V vs RHE,determined for j=-0.1 mA cm^(2)) and a high current density of 5.2 mA cm^(-2),more positive and higher than that of Pt/C 20%(0.96 V) and 4.9 mA cm^(-2),*** the structural characterization and DFT simulation confirmed,the reducing PtN coordination number induces low valence of Pt atoms and low free energy of oxygen reduction,which is responsible for the improved catalytic ***,the Pt-NC shows high mass activity(172 times higher than that of Pt/C 20%),better stability and methanol crossover resistance.

关键词： Modulating effect N coordination Single-atom catalysts Pt-N_(x)-C model DFT simulation

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Bio/hydrochar Sorbents for Environmental Remediation

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Energy & Environmental materials 2020年第4期3卷 453-468页

作者： Xingguang Zhang Yang Wang Junmeng Cai Karen Wilson Adam F.Lee College of Chemical engineering Nanjing Forestry UniversityNanjing 210037China Department of Chemistry School of ScienceUniversity of Shanghai for Science and TechnologyShanghai 200093China biomass Energy engineering research center School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China School of Science RMIT UniversityMelbourne VIC 3000Australia

A rising global population and aspirational higher living standards has driven a step change in resource utilization and concomitant anthropogenic pollution across the ***-cost and scalable technologies for environmental remediation are therefore urgently sought,with an emphasis on trash-to-treasure strategies that exploit abundant but underutilized waste by-products of existing *** are carbon-rich,porous solids produced by biomass pyrolysis under anaerobic or oxygen-scarce conditions at high temperature(350–700°C),while hydrochars are produced by hydrothermal biomass carbonization at lower temperature(130–250°C)and high autogenous pressures(0.3–4.0 MPa).Bio/hydrochars possess unique physicochemical properties,notably high surface areas(100–1500 m2 g-1)and porosity(0.25–2.5 cm^(3)g^(-1))and rich surface chemistry featuring carboxylic,phenolic,hydroxyl,and carbonyl functions,amenable to chemical,physical,or biochemical modification,rendering them ideal sorbents for pollutants such as heavy metals(*** and Cr),and toxic organic(e.g.,dyes and xenobiotics)and inorganic(e.g.,SO_(2))***/hydrochars are attractive for environmental remediation of pollutant mixtures by surface complexation,redox chemistry,electrostatic interactions/ion exchange,or *** review discusses recent opportunities and challenges in creating bio/hydrochar sorbents and their nanocomposites through grafting,doping,and chemical/physical activation,for the depollution of aquatic and atmospheric environments.

关键词： adsorption biochar environmental remediation hydrochar

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Production of Itaconic Acid Through Microbiological Fermentation of Inexpensive materials

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Journal of Bioresources and Bioproducts 2019年第3期4卷 1-8页

作者： Jing YANG Hao XU Jianchun JIANG Ning ZHANG Jingcong XIE Min WEI Jian ZHAO Institute of Chemical Industry of Forest Products CAFNational Engineering Laboratory for Biomass Chemical UtilizationKey and Open Laboratory of Forest Chemical EngineeringSFAKey Laboratory of Biomass Energy and MaterialJiangsu ProvinceNanjing 210042China Co-Innovation center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China

Itaconic acid(IA)is a precursor of various chemicals,which has been on the US Department of Energy’s list of the top 12 platform chemicals that can potentially be produced from *** IA is mainly produced through a bio-fermentation method with sugar as raw ***,the high cost and low yield restrict the industrial application of the *** review summarized research advances in the IA production from alternative *** particular,the types of substrates as well as existing problems in the IA fermentation,strain breeding,and process regulation were *** it is pointed that decreasing the price of the IA through use of alternative substrates and increasing the titer of the IA through genetic engineering should be further focused on to support the industrialization of the IA.

关键词： itaconic acid fermentation Aspergillus terreus biomass

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Tribological Behavior of Plant Oil-Based Extreme Pressure Lubricant Additive in Water-Ethylene Glycol Liquid

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Journal of Renewable materials 2019年第12期7卷 1391-1401页

作者： Haiyang Ding Xiaohua Yang Lina Xu Mei Li Shouhai Li Jianling Xia 无 Institute of Chemical Industry of Forest Products Nanjing210042China Key Laboratory of biomass Energy and Material NanjingChina National engineering Laboratory for biomass Chemical Utilization Nanjing210042China Key and Open Laboratory on Forest Chemical engineering SFANanjing210042China Co-Innovation center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing210042China.

A water-soluble lubricant additive(RSOPE)was prepared by esterification reaction using fatty acid from rubber seed *** RSOPE was added into water-ethylene glycol(W-EG)solution as lubricant *** stability and rheological properties were *** used a four-ball tribotester to assess the lubrication performance of W-EG based fluid with the RSOPE *** stainless-steel surface was analyzed using scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).Good dispersion stability was observed in the RSOPE/W-EG ***,non-Newtonian fluid behavior at low shear rates and Newtonian fluid behavior at high shear rates was *** addition of RSOPE into water-glycol reduced the friction coefficients(COF)and wear scar diameters(WSD).The maximum non-seizure loads(PB)increased from 98 N to 752 N and the W-EG solution with RSOPE had good corrosion resistance *** tribological performances for W-EG solution with RSOPE were attributed to the boundary tribofilm composed of iron oxide,iron phosphide and so on.

关键词： Rubber seed oil fatty acid water-soluble additive tribological performance friction mechanism

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