检索结果-内蒙古大学图书馆

Engineering of fast-growing Vibrio natriegens for biosynthesis of poly(3-hydroxybutyrate-co-lactate)

bioresources and bioprocessing 2024年第1期11卷 1148-1156页

作者： Xinye Sun Yanzhe Shang Binghao Zhang Pengye Guo Yuanchan Luo Hui Wu State Key Laboratory of Bioreactor Engineering Shanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismSchool of BiotechnologyEast China University of Science and Technology130 Meilong RoadShanghai 200237China MOE Key Laboratory of Bio-Intelligent Manufacturing School of BioengineeringDalian University of TechnologyDalianChina Shanghai Collaborative Innovation Center for Biomanufacturing Technology 130 Meilong RoadShanghai 200237China Key Laboratory of Bio-based Material Engineering of China National Light Industry Council130 Meilong RoadShanghai 200237China

Poly(3-hydroxybutyrate-co-lactate)[P(3HB-co-LA)]is a highly promising valuable biodegradable material with good biocompatibility and *** natriegens,owing to its fast-growth,wide substrate spectrum characteristics,was selected to produce P(3HB-co-LA).Herein,the crucial role of acetyltransferase PN96-18060 for PHB synthesis in *** was *** pathway of P(3HB-co-LA)was introduced into *** successfully,in addition,overexpression of the dldh gene led to 1.84 fold enhancement of the lactate content in P(3HB-co-LA).Finally,the production of P(3HB-co-LA)was characterized under different carbon *** lactate fraction in P(3HB-co-LA)was increased to 28.3 mol%by the modification,about 1.84 times of that of the *** is the first successful case of producing the P(3HB-co-LA)in ***,this study showed that *** is an attractive host organism for producing P(3HB-co-LA)and has great potential to produce other co-polymers.

关键词： Poly(3-hydroxybutyrate-co-lactate) Vibrio natriegens Metabolic engineering Lactate fraction

来源：评论

学校读者我要写书评

暂无评论

Enhancement of lactate fraction in poly(lactate-co-3-hydroxybutyrate)biosynthesized by metabolically engineered ***

引用

bioresources and bioprocessing 2024年第1期11卷 1170-1178页

作者： Binghao Zhang Pengye Guo Xinye Sun Yanzhe Shang Yuanchan Luo Hui Wu State Key Laboratory of Bioreactor Engineering Shanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismSchool of BiotechnologyEast China University of Science and Technology130 Meilong RoadShanghai 200237China MOE Key Laboratory of Bio-Intelligent Manufacturing School of BioengineeringDalian University of TechnologyDalianChina Shanghai Collaborative Innovation Center for Biomanufacturing Technology 130 Meilong RoadShanghai 200237China Key Laboratory of Bio-based Material Engineering of China National Light Industry Council130 Meilong RoadShanghai 200237China

Poly(lactate-co-3-hydroxybutyrate)[P(LA-co-3HB)]is a high-molecular-weight biomaterial with excellent biocompatibility and *** this study,the properties of P(LA-co-3HB)were examined and found to be affected by its lactate *** efficiency of lactyl-CoA biosynthesis from intracellular lactate significantly affected the microbial synthesis of P(LA-co-3HB).Two CoA transferases from Anaerotignum lactatifermentans and Bacillota bacterium were selected for use in copolymer biosynthesis from 11 *** found that cotAl enhanced the lactate fraction by 31.56%compared to that of the frequently used modified form of propionyl-CoA transferase from Anaerotignum *** addition,utilizing xylose as a favorable carbon source and blocking the lactate degradation pathway further enhanced the lactate fraction to 30.42 mol%and 52.84 mol%,***,when a 5 L bioreactor was used for fermentation utilizing xylose as a carbon source,the engineered strain produced 60.60 wt%P(46.40 mol%LA-co-3HB),which was similar to the results of our flask *** results indicate that the application of new CoA transferases has great potential for the biosynthesis of other lactate-based copolymers.

关键词： Poly(lactate-co-3-hydroxybutyrate) Lactyl-CoA CoA transferases Lactate-based copolymers

来源：评论

学校读者我要写书评

暂无评论

Cellulose-based functional gels and applications in flexible supercapacitors

引用

Resources Chemicals and materials 2023年第2期2卷 177-188页

作者： Xiuzhi Zhu Geyuan Jiang Gang Wang Ying Zhu Wanke Cheng Suqing Zeng Jianhong Zhou Guangwen Xu Dawei Zhao Key Laboratory on Resources Chemicals and Materials of Ministry of Education Shenyang University of Chemical TechnologyShenyang 110142PR China Key Laboratory of Pulp and Paper Science&Technology of Ministry of Education Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353PR China Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040PR China

In order to resolve the global crisis of fossil energy shortage and climate warming,the development of efficient energy storage devices is a significant topic at *** as the novel type of energy storage devices have the unique advantages,including the fast charging/discharging behaviors,high-energy/power density,and stable cycling *** with traditional supercapacitors,flexible supercapacitors are environmen-tally friendly,light weight,small size and high ***,flexible supercapacitors have a wide application prospect in emerging electronic *** to its flexibility,biocompatibility,and structure designability,cellu-lose and its gel materials are gradually used as electrodes,separators and electrolytes in flexible *** construction processes at molecular scale for high-performance cellulose gels are ***,this review covers the recent progress of developing the flexible supercapacitors and all-in-one supercapacitors based on cellulose functional *** finally discussed the potential challenges and opportunities for cellulose and its derived materials in new-style flexible supercapacitors and other electronic devices.

关键词： Cellulose Functional design Gel materials Flexible supercapacitors

来源：评论

学校读者我要写书评

暂无评论

Improvement in the Performance of the Polylactic Acid Composites by Using Deep Eutectic Solvent Treated Pulp Fiber

引用

Journal of Renewable materials 2021年第11期9卷 1897-1911页

作者： Lei Tan Liangxian Liu Chaodong Liu Weihong Wang Key Laboratory of Bio-Based Material Science and Technology(Ministry of Education) Material Science and Engineering CollegeNortheast Forestry UniversityHarbin150040China

As the most favorable alternative to petroleum-based polymers,polylactic acid(PLA)which is the most promising degradable polymer has attracted increasing ***,the addition of cellulose to improve its strength often results in a reduction in its *** this work,microscale cellulose is first prepared from pulp fibers by using a deep eutectic solvent,and then is used as the reinforcement of PLA.A microcrystalline cellulose(MCC)/PLA sheet with uniform texture is obtained by the solution mixing,melt blending,hot-pressing and cold-pressing *** effects of MCC on the crystallization,thermal stability and mechanical properties of the PLA matrix were *** the addition of 1%cellulose fiber,the tensile strength of MCC/PLA composite sheet increased by 27%,and the elongation at break did not shown an evident *** strength enhancement mechanism was elucidated using scanning electron microscopy,differential scanning calorimetry,and dynamic thermomechanical *** energy dissipation during the deformation process and the compatibility of AMCC and rougher surface of MCC play important role in the strength ***,UV spectroscopy showed that the composite material absorbed some ultraviolet *** results show that the combined use of a deep eutectic solvent and solution mixing is an effective approach for improving the strength of PLA while maintaining its toughness.

关键词： Polylactic acid microcrystalline cellulose deep eutectic solvent mechanical properties

来源：评论

学校读者我要写书评

暂无评论

Nanocarbon catalysts with co-active S−P−C sites enhance metal-free direct oxidation of alcohols

引用

SusMat 2024年第5期4卷 202-215页

作者： Juan Meng Huidong Liu Jianing Xu Yuhan Lou Haixin Sun Bo Jiang Yongzhuang Liu Hengfei Qin Shuo Dou Haipeng Yu Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbinChina School of Resources and Environmental Engineering Jiangsu University of TechnologyChangzhouChina School of Urban Construction Changzhou UniversityChangzhouChina College of Chemistry Chemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbinChina

In this study,a sulfur–phosphorus co-doped nanocarbon(SPC)catalyst was syn-thesized using a straightforward one-step colloidal carbonization method and demonstrated high performance in the metal-free direct oxidation of alcohols to *** metal-free SPC catalyst showed exceptional efficiency,achiev-ing a conversion rate of 90%for benzyl alcohol and a selectivity of 94%toward benzaldehyde within only 1 h at 130◦***,it displays exceptional cycle stability and a high turnover frequency(17.1×10-3 mol g-1 h-1).Theoretical analysis suggested that the catalyst’s superior performance is attributed to the presence of unsaturated edge defects and S-P-moieties,which increase the density of states at the Fermi level,lower the band gap energy,and promote electron ***,the doping introduces cooperative co-active S-P-C sites,facilitating a synergistic multisite catalytic effect that lowers the energy *** findings represent a significant advancement in the field of metal-free direct alcohol oxidation.

关键词： alcohol oxidation reaction carbon catalysts electronic structures

来源：评论

学校读者我要写书评

暂无评论

Accelerating Electrocatalytic Nitrate Reduction to Ammonia via Weakening of Intermediate Adsorption on Cu-based Catalyst

引用

Transactions of Tianjin University 2024年第6期30卷 488-497页

作者： Yizhu Chen Ang Ma Lei Chen Xinyang Liu Yan Li Yan Hong Yushuo Zhang Yunyi Liu Lixin Wei Yudong Li Siqi Li Song Liu College of Chemistry Chemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin 150040China School of Physics and Electronic Engineering Harbin Normal UniversityHarbin 150025China Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040China

Cu-based materials are commonly used in electrocatalytic nitrate reduction reactions(NO 3 RR).NO 3 RR is a“two birds,one stone”approach,simultaneously removing NO 3−pollutants and producing valuable ammonia(NH 3).However,the strong coordination between the NO 3−intermediate and the catalytic active sites seriously hinders the conversion effi ***,we determined that,through encapsulation strategies,the carbon layer could weaken the NO 3−intermediate binding to active sites,resulting in higher NH 3 *** experimentally fabricated electrocatalysts,i.e.,Cu nanoparticles encapsulating(or loaded on)N-doped carbon nanofi bers(NCNFs)called Cu@NCNFs(Cu-NCNFs),using electrostatic *** a result,Cu@NCNFs can achieve NH 3 yields of 17.08 mg/(h·mg cat)at a voltage of−0.84 V and a Faraday effi ciency of 98.15%.Meanwhile,the electrochemical properties of the Cu nanoparticles on the surface of carbon fi bers(Cu-NCNFs)are lower than those of the Cu@*** in situ Raman spectra of Cu@NCNFs and Cu-NCNFs under various reduction potentials during the NO 3 RR process show that catalyst encapsulation within carbon layers can eff ectively reduce the adsorption of N species by the catalyst,thus improving the catalytic performance in the nitrate-to-ammonia catalytic conversion process.

关键词： Electrocatalytic nitrate reduction reactions Ammonia synthesis Copper-based electrocatalysts·Electrostatically spun carbon fi ber Regulated adsorption

来源：评论

学校读者我要写书评

暂无评论

Brief review of hydrocarbon-reforming catalysts map for hydrogen production

引用

Energy Reviews 2023年第3期2卷 51-62页

作者： Qunwei Guo Jiaqi Geng Jiawen Pan Lu Zou Yunfeng Tian Bo Chi Jian Pu School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science&TechnologyWuhanHubei430074PR China Key Laboratory of Green Chemical Engineering Process of Ministry of Education School of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhanHubei430073PR China Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization School of Materials Science and PhysicsChina University of Mining and TechnologyXuzhou221116PR China

Hydrogen energy,the cleanest fuel,presents extensive applications in renewable energy technologies such as fuel ***,the transition process from carbon-based(fossil fuel)energy to desired hydrogen energy is usually hindered by inevitable scientific,technological,and economic obstacles,which mainly involves complex hydrocarbon reforming ***,this paper provides a systematic and comprehensive analysis focusing on the hydrocarbon reforming ***,recent related studies are summarized to clarify the intrinsic difference among the reforming *** to objectively assess the activated catalyst and deactivation mechanism,the rate-determining steps of reforming process have been emphasized,summarized,and ***,the effect of metals and supports on individual reaction processes is discussed followed by the metalsupport *** tendency and research map could be established to promote the technology development and expansion of hydrocarbon reforming *** review could be considered as the guideline for academics and industry designing appropriate catalysts.

关键词： Hydrogen production Reforming mechanism Metal-support interaction Metal catalysts Supports properties

来源：评论

学校读者我要写书评

暂无评论

Cocatalysts in photocatalytic methane conversion: recent achievements and prospects

引用

science China Chemistry 2023年第9期66卷 2532-2557页

作者： Chengcheng Zhang Jing Wang Shenshen Ouyang Hui Song Jinhua Ye Li Shi School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Key Laboratory of Bio-based Polymeric Materials Technology and Application Ningbo Key Laboratory of Polymer MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)Tsukuba 305-0044Japan TJU-NIMS International Collaboration Laboratory School of Material Science and EngineeringTianjin UniversityTianjin 300072China

Photocatalysis, which performed under mild conditions by utilizing solar energy, has become a desirable technology to convert methane into highly valuable chemicals, such as methanol, ethane, and other hydrocarbons. However, pristine photocatalysts still suffer from the low utilization efficiency of solar light and the high recombination rate of photogenerated charge carriers, which exhibit the low activity and selectivity for photocatalytic methane conversion. Loading cocatalysts on photocatalysts is an attractive strategy to manipulate the products' yield and selectivity of photocatalytic methane conversion due to the enhanced charge carrier separation efficiency, extended light absorption and promoted reactant adsorption/desorption kinetics. This review discusses the recent achievements of the cocatalysts for photocatalytic methane conversion reactions. Moreover, the challenges and perspectives for the development of efficient cocatalysts are presented. This review provides considerable guidelines for the design and construction of efficient cocatalysts for photocatalytic methane conversion reactions.

关键词： photocatalysis methane conversion cocatalysts valuable chemicals

来源：评论

学校读者我要写书评

暂无评论

Improving Electrochemical Performance of Cellulose Fiber-based Supercapacitor Electrode Using Polypyrrole-wrapped Iron Oxyhydroxide

引用

Paper And biomaterials 2021年第3期6卷 10-19页

作者： Youngchu Kang Hailan Jin Xianhui An Xueren Qian Key Laboratory of Bio-based Material Science&Technology(Northeast Forestry University)Ministry of Education HarbinHeilongjiang Province150040China

Polypyrrole(PPy)@cellulose fiber-based composites have been widely investigated as electrode materials for use in flexible ***,they cannot readily provide high specific capacitance and cyclic stability owing to their inherent drawbacks,such as high resistance,Weber impedance,and volume expansion or collapse during charging/*** this study,iron oxyhydroxide(FeOOH)is incorporated in the abovementioned composite to decrease the equivalent series resistance,charge transfer resistance,and Weber impedance,thereby enhancing electron transfer and ion diffusion,which results in superior electrochemical *** PPy-wrapped FeOOH@cellulose fiber-based composite electrode with the molar ratio of FeSO_(4) to NaBH4 of 1∶1 exhibits a high specific capacitance of 513.8 F/g at a current density of 0.2 A/g,as well as an excellent capacitance retention of 89.4% after 1000 cycles.

关键词： cellulose fibers iron oxyhydroxide polypyrrole electrode material electrochemical performance

来源：评论

学校读者我要写书评

暂无评论

Engineering CuMn Prussian blue analog-shelled nanobox for efficient electrochemical reduction of nitrate to ammonia

引用

Tungsten 2024年第4期6卷 833-844页

作者： Zi-Yi Yang Yu-Dong Li Dan Liu Mao-Sen Song Yang Gao Qing-Ping Wu En-Shan Han Yan-Zhen He Xiao-Hui Yang School of Chemical Engineering and Technology Hebei University of TechnologyTianjin300130China Key Laboratory of Bio-Based Material Science and Technology Northeast Forestry UniversityHarbin150040China Institute of Electrochemical Energy Storage Helmholtz-Zentrum Berlin für Materialien und EnergieHahn-Meitner-Platz 114109BerlinGermany Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing400714China

Electrocatalytic nitrate reduction reaction(ENRR)for ammonia synthesis is a promising strategy to relieve nitration contamination,as well as an alternative to the Haber-Bosch *** blue analogs(PBAs)are expected to be an electrocatalytic material with superior performance owing to their abundant active sites and open channel ***,most reported PBA materials possess low nitrate conversion and ammonia yield rates,which has led to a hindrance in their research of ***,CuMn-PBA-shelled nanoboxes(CuMn-PBA SNBs)synthesized through tannic acid etching and cation exchange approaches are demonstrated for efficient ammonia *** optimal CuMn-PBA SNBs electrode achieves a high nitrate conversion of 91.33%and ammonia selectivity of 98.87%in a 0.2 mol·L^(-1)Na_(2)SO_(4) solution with100×10^(-6) NO_(3)^(-)-N at-1.4 V ***,the CuMn-PBA SNB s electrode exhibits exceptional stability throughout a 30 h electrocatalytic *** outstanding electrochemical performance is attributed to the unique hollow nanobox structure with abundant active sites and high-throughput transport pathways for ions'aspects.

关键词： Electrocatalytic nitrate reduction Ammonia synthesis Prussian blue analogs Acid etching Cation exchange Nanobox

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：