检索结果-内蒙古大学图书馆

Photo-Fenton Degradation of Tetracycline Hydrochloride with Fe2o3-on-Zro2 Octapods Derived from Mil-88b-On-Uio-66-Nh2 within Full Ph Range: Kinetics, Degradation Pathway, Dft Calculation and Mechanism Insight

SSRN

引用

SSRN 2022年

作者： Zhang, Tingting Liu, Xing Jiang, Yanqiu Zheng, Xiaowei Zhang, Jian Li, Yudong Li, Defeng Lin, Kaifeng MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China Key Laboratory of Bio-based Material Science & Technology Ministry of Education Northeast Forestry University Harbin150040 China

Photo-Fenton reaction has received increasing attention in the removal of antibiotic pollutants in water. Herein, Fe 2 O 3 -on-ZrO 2 octapods, Fe 2 O 3 with rod-shaped cone precisely aligned on each lattice plane of ZrO 2 octahedron, were designed and synthesized via simple reflux heating and baking, combined lattice plane recognition with heteroepitaxial directional growth strategies. There are a large number of Fe 2 O 3 -on-ZrO 2 heterojunctions closely connected by Fe-O-Zr bond, which conduce to the separation and transmission between photoinduced e - and h + , accelerate the iron cycle and then generate more highly active free radicals to promote the decomposition of tetracycline hydrochloride (TC-HCl). Fe 2 O 3 -on-ZrO 2 had high adsorption energy for H 2 O 2 by DFT calculation, which greatly speeded the participation of H 2 O 2 . The results of photo-Fenton degradation experiments showed that under UV-vis light irradiation, more than 95% TC-HCl solution was degraded by Fe 2 O 3 -on-ZrO 2 in 25 minutes within full pH range, which demonstrated excellent photo-Fenton performance and the pH limit broken. Finally, the possible degradation path and reasonable degradation mechanism were speculated by HPLC-MS, SKP, ESR etc. This work exhibited a new structure and degradation mechanism, which would further encourage researchers to study the rational regulation of materials with special morphology and structure. © 2022, The Authors. All rights reserved.

关键词： Degradation

来源：评论

学校读者我要写书评

暂无评论

One stone two birds: biosynthesis of 3-hydroxypropionic acid from CO2 and syngas-derived acetic acid in Escherichia coli

引用

Synthetic and Systems biotechnology 2021年第3期6卷 144-152页

作者： Ningyu Lai Yuanchan Luo Peng Fei Peng Hu Hui Wu State Key Laboratory of Bioreactor Engineering School of BiotechnologyEast China University of Science and Technology130 Meilong RoadShanghai200237China Shanghai Collaborative Innovation Center for Biomanufacturing Technology 130 Meilong RoadShanghai200237China Key Laboratory of Bio-based Material Engineering of China National Light Industry Council 130 Meilong RoadShanghai200237China Shanghai GTL Biotech Co. Ltd.1688 North Guoquan RoadShanghai200438China

Syngas,which contains large amount of CO2 as well as H2 and CO,can be convert to acetic acid chemically or ***,acetic acid become a cost-effective nonfood-based carbon source for value-added biochemical *** this study,acetic acid and CO2 were used as substrates for the biosynthesis of 3-hydroxypropionic acid(3-HP)in metabolically engineered Escherichia coli carrying heterogeneous acetyl-CoA carboxylase(Acc)from Corynebacterium glutamicum and codon-optimized malonyl-CoA reductase(MCR)from Chloroflexus *** of metabolic engineering included promoting glyoxylate shunt pathway,inhibiting fatty acid synthesis,dynamic regulating of TCA cycle,and enhancing the assimilation of acetic *** engineered strain LNY07(M*DA)accumulated 15.8 g/L of 3-HP with the yield of 0.71 g/g in 48 h by whole-cell ***,syngas-derived acetic acid was used as substrate instead of pure acetic *** concentration of 3-HP reached 11.2 g/L with the yield of 0.55 g/g in LNY07(M*DA).The results could potentially contribute to the future development of an industrial bioprocess of 3-HP production from syngas-derived acetic acid.

关键词： Syngas-derived acetic acid 3-Hydroxypropionic acid Metabolic engineering Escherichia coli Dynamic regulation

来源：评论

学校读者我要写书评

暂无评论

Effect of an antioxidant on the life cycle of wood flour/polypropylene composites

引用

Journal of Forestry Research 2020年第4期31卷 1435-1443页

作者： Haigang Wang Jingfa Zhang Haitao Fu Weihong Wang Qingwen Wang Key Laboratory of Bio-Based Material Science and Technology(Ministry of Education) Northeast Forestry UniversityHarbin 150040People’s Republic of China College of Materials and Energy South China Agricultural UniversityGuangzhou 510642People’s Republic of China

This study assessed the life cycle of biocomposites with antioxidants by repeated *** effects of antioxidants on the life cycle of wood flour/polypropylene(PP)composites were determined by analyzing their mechanical and thermal *** composites were repeatedly processed for seven times with pelletizing and *** antioxidant,pentaerythritoltetrakys 3-(3,5-ditert-butyl-4-hydroxyphenyl)propionate,was *** mechanical strength of the biocomposites decreased after *** transformed infrared analysis showed that thermo-oxidative aging occurred during *** thermal performance of the resulting composites decreased because of *** flour/PP has a long lifetime and antioxidants can slow the thermo-oxidative and mechanical degradation during reprocessing.

关键词： Wood-plastic composites Polypropylene Reprocessing Antioxidant

来源：评论

学校读者我要写书评

暂无评论

Subtle Side Chain Triggers Unexpected Two-Channel Charge Transport Property Enabling 80%Fill Factors and Efficient Thick-Film Organic Photovoltaics

引用

The Innovation 2021年第1期2卷 173-182页

作者： Yonghai Li Lu Yu Liangliang Chen Chenyu Han Huanxiang Jiang Zitong Liu Nan Zheng Jiuxing Wang Mingliang Sun Renqiang Yang Xichang Bao CAS Key Laboratory of Bio-based Materials Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China School of Material Science and Engineering Ocean University of ChinaQingdao 266100China Functional Laboratory of Solar Energy Shandong Energy InstituteQingdao 266101China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China School of Materials Science and Engineering Qingdao UniversityQingdao 266071China Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) School of Chemical and Environmental EngineeringJianghan UniversityWuhan 430056China

To clearly show how important the impact of side chains on organic solar cells(OSCs)is,we designed three acceptors IDIC-CxPh(x=4,5,or 6)via subtle side-chain *** this small change,significant distinctions were ***-C4Ph devices achieve an optimal efficiency of 13.94%under thermal annealing,but thermal-assistant solvent-vapor annealing hugely suppresses the efficiencies to 10%.However,the C6Ph side chain endows extremely disordered stacking orientations,generating moderate efficiencies of~12.50%.Excitingly,the IDIC-C5Ph affords an unexpected two-channel p-p charge transport(TCCT)property,boosting the fill factor(FF)by up to 80.02%and efficiency to 14.56%,ranking the best among five-ring fused-ladder-type ***,the special TCCT behavior of IDIC-C5Ph enables 470 nm thick-film OSC with a high FF of up to 70.12%and efficiency of 13.01%,demonstrating the great promise in fabricating largescale OSCs.

关键词： organic solar cells side chain molecular assembly twochannel charge transport thick-film

来源：评论

学校读者我要写书评

暂无评论

Grifola Frondosa Polysaccharides affects gut microbiota and lipid profiles depended on the molecular weight in mice

Grifola Frondosa Polysaccharides affects gut microbiota and ...

引用

2021 International Conference on Information technology and biomedical Engineering, ICITBE 2021

作者： Ji, Xiuyu Liu, Xinli Zhu, Deqiang Xu, Zhenshang Chu, Yaqi Zhang, Song Qilu University of Technology Shandong Academy of Sciences Shandong Provincial Key Laboratory of Microbial Engineering Department of Bioengineering Jinan250353 China State Key Laboratory of Bio-based Material and Green Papermaking Shandong Provincial Key Lab. of Microbial Engineering Qilu University of Technology Shandong Academy of Sciences Jinan250353 China

ISBN: (纸本)9781665400992

Figuring out the effect of Grifola frondosa Polysaccharide (GFP) on gut microbiota is increasingly recognized because of its widespread use in medicine area. In the present study, we investigated the potential influences of GFP with five molecular weight ranges on the gut microbiota, lipid content in serum and livers, and metabolic pathways in mice. GFP with each molecular weight range significantly changed the composition of the gut microbiota. Compared with the control (CK) group, GFP with five molecular weight ranges significantly changed Beta-diversity of the gut microbiota, especially EG3 (30-50k Dalton) group and the EG5 (=100k Dalton) group. GFP with five molecular weight ranges had no significant effect on the lipid profiles of the content of triglycerides (TG), total cholesterol (T-CHO), high density lipoprotein (HDL-C) and low density lipoprotein (LDL-C) in serum. The EG4 (50-100k Dalton) group obviously reduced the content of TG and T-CHO, slightly increased the content of HDL-C, and slightly changed the content of LDL-C in liver. The EG1 (=10k Dalton) group, the EG2 (10-30k Dalton) group, the EG3 group and the EG5 group made the KEGG pathways changed. These findings illustrated that GFP positively affected the microbial environment in the gut microbiota and offered the experimental evidence for preparation of multi-functional diet or medicine. © 2021 IEEE.

关键词： Polysaccharides

来源：评论

学校读者我要写书评

暂无评论

Polyzwitterionic Hydrogel Electrolytes Via Ultrafast Autocatalytic Gelation Process for Flexible Zn-Ion Hybrid Supercapacitors

SSRN

引用

SSRN 2023年

作者： Liu, Jiankang Wang, Fangfang Jiang, Weikun Zhao, Qian Li, Wei Wang, Chunyang Liu, Shiwei Liu, Yu State Key Laboratory of Bio-based Material and Green Papermaking Qilu University of Technology Shandong Academy of Sciences Shandong250353 China Faculty of Light Industry and Chemical Engineering Dalian Polytechnic University Liaoning 116034 China College of Chemical Engineering Qingdao University of Science and Technology Shandong266061 China

Hydrogel electrolytes with high intrinsic toughness and ionic conductivity are considered essential for realising flexible energy storage. Polyzwitterionic hydrogel electrolytes typically exhibit excellent ionic transference number and conductivity because of their distinct rapid anionic and cationic channels, thereby achieving superior ionic transport kinetics. This paper presents an ultrafast autocatalytic gelation process, which can produce a self-adhesive hydrogel electrolyte (PAD@SC) via copolymerization of vinyl monomer acrylic acid and zwitterionic monomer sulfobetaine in a time scale of seconds instead of hours at room temperature (approximately 20 ℃). The incorporation of bio-based functional enhancement components, namely, sodium lignosulfonate and nanocellulose, into the hydrogel precursor solution facilitated the reconstruction of noncovalent hydrogen bond networks within the hydrogel, resulting in enhanced mechanical properties. Moreover, the PAD@SC hydrogel electrolyte prepared using this autocatalytic system can effectively inhibit the growth of Zn dendrites to realize a stable Zn anode. The assembled PAD@SC-based flexible Zn-ion capacitors possess high specific capacitance (85.4 mAh g-1), rate performance, and cycling stability (10000 cycles at 5 A g-1), indicating remarkable potential for practical application in flexible power supplies. © 2023, The Authors. All rights reserved.

关键词： Hydrogels

来源：评论

学校读者我要写书评

暂无评论

Loaded carbon shell encapsulated transition metal and ZnIn2S4 on carbonized paper for enhanced photocatalytic hydrogen production

引用

Journal of colloid and interface science 2025年 697卷 137990页

作者： Guiyuan Guo Jiaxin Feng Heting Wang Luyao Guo Xiujie Huang Xueren Qian Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University) Ministry of Education Harbin 150040 China. Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University) Ministry of Education Harbin 150040 China. Electronic address: shanmu1128@***.

Solar-driven semiconductor photocatalysis water splitting is considered a green and efficient method for hydrogen production. But the severe recombination of photogenerated carriers limits the efficiency of hydrogen production. The introduction of transition metal co-catalyst can form an internal electric field (IEF) with semiconductor to achieve efficient directional transfer of photogenerated electron-holes. However, the aggregation of transition metal co-catalyst and the formation of metal-hydrogen bonds are still the main problems for limiting hydrogen production efficiency. Here, metal-organic framework (MOF) derived porous carbon encapsulated transition metal Fe (Fe@C) and ZnInS are loaded on carbonized cellulose fibers (CCF) to construct composite paper for photocatalytic water splitting into hydrogen. The MOF-derived carbon skeleton can provide high conductivity and disperse Fe co-catalyst for increasing the active sites. Moreover, the encapsulation of Fe in the 3D carbon skeleton can avoid the formation of metal-hydrogen bonds and improve the hydrogen adsorption and desorption capacity. The CCF as a carrier is beneficial to improve the dispersibility and reusability of Fe@C and ZnInS. The hydrogen evolution rate of the composite paper is as high as 63.8 mmol h g under visible light irradiation. After 5 photocatalytic cycles, the hydrogen evolution rate remains at 94.2 % and the loading state of Fe@C and ZnInS on CCF is maintained. This work provides a new idea for fabrication of high-efficient photocatalytic paper, and develops the application potential of MOF derivatives in photocatalysis.

关键词： Co-catalyst MOF derivatives Paper-based photocatalytic material Photocatalytic hydrogen production ZnIn(2)S(4)

来源：评论

学校读者我要写书评

暂无评论

通过共晶工程的选择性外延生长有机异质结构实现光信号定向转换

引用

science China materials 2023年第10期66卷 3968-3976页

作者：吕强王雪东余悦俞燕君郑敏廖良生 Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China National Engineering Laboratory for Modern Silk College of Textile and Clothing EngineeringResearch Center of Cooperative Innovation for Functional Organic/Polymer Material Micro/NanofabricationSoochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipa 999078Macao SARChina

分层有机纳米结构(HONs)是一种将具有不同功能的多个成分集成在一个系统中的纳米结构,其在光电子应用中引起了极大的关注.然而,由于不同材料之间结构不相容性的难题,构建具有超低晶格失配率(η)的HONs仍然面临巨大挑战.共晶工程提供了... 详细信息

分层有机纳米结构(HONs)是一种将具有不同功能的多个成分集成在一个系统中的纳米结构,其在光电子应用中引起了极大的关注.然而,由于不同材料之间结构不相容性的难题,构建具有超低晶格失配率(η)的HONs仍然面临巨大挑战.共晶工程提供了探索合理制备HONs的有力手段,但迄今为止尚未得到系统的证明.在这里,我们展示了一种用于HONs的超低晶格失配异质外延的共晶工程策略.该策略具备足够的通用性,可实现多种材料的集成从而得到不同空间取向的异质结构.通过实验合成了一系列典型HONs,包括三嵌段(η_(1)=0.7%)、分支(η_(2)=0.8%)和核/壳(η_(3)=0.6%)纳米结构,其晶格失配率远低于先前报道的HONs(5%-10%).此外,我们选择性地合成了核/壳的子结构,包括三嵌段和三明治状纳米线,揭示了界面能在HONs形成过程中的诱导作用.作为概念验证,制备所得的不同异质结构成功实现了光子信号的定向转换,为构建下一代集成光电器件奠定了坚实的基础.

关键词： organic heterostructures epitaxy lattice mismatch cocrystal integrated photonics

来源：评论

学校读者我要写书评

暂无评论

Mof-on-Mof-Derived Cuo@In2o3 S-Scheme Heterojunction with Core-Shell Structure for Efficient Photocatalytic Co2 Reduction

SSRN

引用

SSRN 2023年

作者： Liu, Xing Wu, Yuhan Li, Yudong Yang, Xiaohui Ma, Qinghai Luo, Juhua School of Materials Science and Engineering Yancheng Institute of Technology Yancheng224051 China Key Laboratory of Bio-based Material Science & Technology Ministry of Education Northeast Forestry University Harbin150040 China Key Laboratory of Reservoir Aquatic Environment Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences No. 266 Fangzheng Avenue Beibei District Chongqing400714 China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China

Herein, a MOF-on-MOF-derived In2O3 nanosheets encapsulating CuO ortho-octahedral core-shell structure CuO@In2O3 S-Scheme heterojunction composite was designed and prepared by a new strategy of interfacial engineering integrating optical and catalytic activity centers, and endowed with the catalyst's dual properties of both highly efficient light absorption and efficient charge separation. The In2O3 shell wraps around the CuO core in a tight coaxial contact, allowing the two to have the largest contact surface thus effectively promoting the transport of electrons and holes separated at the interface. More importantly, CuO@In2O3 formed a binuclear center could enhance the CO2 adsorption to facilitate the subsequent catalytic reaction and promote the charge transfer through Cu-O-In bonds. The successful construction of S-Scheme heterojunction not only promotes the spatial separation of electron-hole pairs, but also maintains the strongest redox potentials of CuO and In2O3 at the conduction and valence band positions. Notably, the intermediates in the CO2 photoreduction process were probed by in situ infrared spectroscopy and a possible photocatalytic mechanism was hypothesized. Under visible light irradiation, the CuO@In2O3 rates of photocatalytic reduction of CO2 to produce CH4 and CO were 190.32 μmol g-1 h-1 and 500.46 μmol g-1 h-1, which are 2.1, 10.3 times and 2.4, 7.9 times higher than pristine CuO and In2O3, respectively. This work provides a feasible strategy for the design and synthesis of binuclear-centered photocatalysts with interfacially engineered modulation and application to the photocatalytic reduction of CO2. © 2023, The Authors. All rights reserved.

关键词： Heterojunctions

来源：评论

学校读者我要写书评

暂无评论

Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution

引用

Journal of Magnesium and Alloys 2021年第2期9卷 613-626页

作者： Jiarun Li Zhuoyuan Chen Jiangping Jing Jian Hou Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of OceanologyChinese Academy of Sciences7 Nanhai RoadQingdao 266071China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteWenhai RoadQingdao 266237China Center for Ocean Mega-Science Chinese Academy of Sciences7 Nanhai RoadQingdao 266071China Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology(Qingdao)No.1 Wenhai RoadQingdao 266237China

The microstructures and corrosion behaviors of Mg-6%Al-3%Zn and Mg-6%Al-3%Zn-(0.251.0)%Y in 3.5 wt.%Na Cl solution are investigated via morphology observation,phase characterization,immersion and electrochemical *** experimental results suggest that yttrium alloying can improve the corrosion resistance of Mg-6%Al-3%Zn throughout the *** initial enhanced corrosion resistance of magnesium alloy is attributed to the Y alloying,which gives rise to the increasing content of Al_(2)O_(3)in oxide *** promoted protectiveness of oxide layer on Mg-6%Al-3%Zn-1.0%Y alloy arouse a filiform corrosion as revealed by in-situ metallographic ***,the Y-containing magnesium alloys still perform higher corrosion resistance compared with that of Mg-6%Al-3%Zn alloy even if the oxide layer is *** phenomenon is owing to two factors,one is the gradual transformation of intermetallic phases from continuous Mg_(17)Al_(12)to discrete Al_(2)Y in matrix,by which the micro-galvanic corrosion betweenα-Mg grains and intermetallic phases is alleviated;the other is the morphology variation of corrosion products,the uniform and compact products layer on Y-containing alloys provide a barrier that effectively prevent the corrosive ions from penetrating into and reacting with Mg matrix.

关键词： Magnesium Yttrium alloying Corrosion Intermetallic phase Oxide layer

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：