检索结果-内蒙古大学图书馆

Fe-doped Co_(3)O_(4) nanowire strutted 3D pinewood-derived carbon: A highly selective electrocatalyst for ammonia production via nitrate reduction

引用

Nano Research 2024年第4期17卷 2276-2282页

作者： Xuwei Liu Chaozhen Liu Xun He Zhengwei Cai Kai Dong Jun Li Xiaoya Fan Ting Xie Xiya Yang Yonglan Luo Dongdong Zheng Shengjun Sun Sulaiman Alfaifi Feng Gong Xuping Sun Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 211189China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Chemistry Department Frontier of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Nitrate(NO_(3)^(-)),a nitrogen-containing pollutant,is prevalent in aqueous solutions,contributing to a range of environmental and health-related *** electrocatalytic reduction of NO_(3)^(-)holds promise as a sustainable approach to both eliminating NO_(3)^(-)and generating valuable ammonia(NH_(3)).Nevertheless,the reduction reaction of NO_(3)^(-)(NO_(3)^(-)RR),involving 8-electron transfer process,is intricate,necessitating highly efficient electrocatalysts to facilitate the conversion of NO_(3)^(-)to NH_(3).In this study,Fe-doped Co_(3)O_(4) nanowire strutted three-dimensional(3D)pinewood-derived carbon(Fe-Co_(3)O_(4)/PC)is proposed as a high-efficiency NO_(3)^(-)RR electrocatalyst for NH_(3) *** within 0.1 M NaOH containing NO_(3)^(-),Fe-Co_(3)O_(4)/PC demonstrates exceptional performance,obtain an impressively large NH_(3) yield of 0.55 mmol·h^(-1)·cm^(-2) and an exceptionally high Faradaic efficiency of 96.5%at-0.5 V,superior to its Co_(3)O_(4)/PC counterpart(0.2 mmol·h^(-1)·cm^(-2),73.3%).Furthermore,the study delves into the reaction mechanism of Fe-Co_(3)O_(4) for NO_(3)^(-)RR through theoretical calculations.

关键词： Fe-doped Co_(3)O_(4) nanowire pinewood-derived carbon electrocatalytic NO_(3)-reduction NH_(3) synthesis density functional theory

来源：评论

学校读者我要写书评

暂无评论

Elucidating the role of embedding dispersed cobalt sites in nitrogen-doped carbon frameworks in Si-based anodes for stable and superior storage

引用

Journal of Energy Chemistry 2024年第11期98卷 180-195页

作者： Yueying Chen Ping Li Mianying Huang Chunlei Wu Qianhong Huang Tingyang Xie Xiaoming Lin Akif Zeb Yongbo Wu Zhiguang Xu Yuepeng Cai Joint Laboratory of Energy and Materials Chemistry(South China Normal University-Guangzhou Tianci New Materials Co.Ltd.) Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina Department of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang 330022JiangxiChina Guangzhou Huifu Research Institute Co.Ltd Nanxiang San LuGuangzhou 510663GuangdongChina Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006GuangdongChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong-Hong Kong Joint Laboratory of Quantum MatterSouth China Normal UniversityGuangzhou 510006GuangdongChina

Unsatisfactory conductivity and volume effects have hindered the commercial application of siliconbased materials as advanced anode materials for high-performance lithium-ion batteries. Herein, nitrogen doped carbon silicon matrix composite with atomically dispersed Co sites(Si/Co-N-C) is obtained via the design of the frame structure loaded with nano-components and the multi-element hybrid strategy. Co atoms are uniformly fixed to the N-C frame and tightly packed with nanoscale silicon particles as an activation and protection building block. The mechanism of the N-C framework of loaded metal Co in the Si alloying process is revealed by electrochemical kinetic analysis and ex situ characterization ***, the nitrogen-doped Co site activates the intercalation of the outer carbon matrix to supplement the additional capacity. The Co nanoparticles with high conductivity and support enhance the conductivity and structural stability of the composite, accelerating the Li^(+)/Na^(+) diffusion kinetics. Density functional theory(DFT) calculation confirms that the hetero-structure Si/Co-N-C adjusts the electronic structure to obtain good lithium-ion adsorption energy, reduces the Li^(+)/Na^(+) migration energy *** work provides meaningful guidance for the development of high-performance metal/non-metal modified anode materials.

关键词： Co nanoparticles Nitrogen doped carbon Silicon Lithium/sodium storage Metal-organic frameworks(MOFs)

来源：评论

学校读者我要写书评

暂无评论

Highly efficient removal of trace lead(Ⅱ)from wastewater by 1,4-dicarboxybenzene modified Fe/Co metal organic nanosheets

引用

Journal of materials Science & Technology 2022年第3期98卷 212-218页

作者： Junmao Hong Le Kang Xiaofeng Shi Renbo Wei Xianmin Mai Duo Pan Nithesh Naik Zhanhu Guo School of Environment and Safety Engineering School of Materials Science and TechnologyInstitute of Advanced Energy Materials and SystemsNorth University of ChinaTaiyuanChina School of Chemical Engineering Northwest UniversityXi’an 710069China School of Urban Planning and Architecture Southwest Minzu UniversityChengdu 610041China Key Laboratory of Materials Processing and Mold(Zhengzhou University) National Engineering Research Center for Advanced Polymer Processing TechnologyMinistry of EducationZhengzhou UniversityZhengzhou 450000China Department of Mechanical&Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka 576104India Integrated Composites Laboratory(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996United States

A novel Fe/Co metal organic complex nanosheet modified by 1,4-dicarboxybenzene(BDC),i.e.,FeCo@BDC,was prepared,and highly efficient removal performance for trace lead(Ⅱ)(Pb^(2+))was demonstrated in the neutral aqueous *** removal rates were higher than 95%and the adsorption was equilibrated in 15 *** isotherms and kinetics for the adsorption Pb^(2+)by the FeCo@BDC adsorbents followed Langmuir model and pseudo-second-order model,*** maximum adsorption capacity was 220.48 mg g^(-1).The FeCo@BDC adsorbents also own a prominent regeneration *** prominent performance of in the removal of trace Pb^(2+)makes FeCo@BDC an ideal candidate as commercial adsorbent materials.

关键词： Metal organic complex Nanosheet Trace level Lead(Ⅱ) Adsorption

来源：评论

学校读者我要写书评

暂无评论

Synthesis and Characterization of Biochar Obtained from Microwave-Assisted Copyrolysis of Torrefied Sawdust and Polystyrene

ACS Sustainable Resource Management

引用

ACS Sustainable Resource Management 2024年第9期1卷 2074-2085页

作者： Ramesh Potnuri Chinta Sankar Rao Control Systems and Machine Learning Research Laboratory Department of Chemical Engineering National Institute of Technology Karnataka Surathkal Mangalore Karnataka 575025 India

This study focuses on copyrolyzing pretreated sawdust and polystyrene utilizing microwave-assisted pyrolysis (MAP) with equal mixing to synthesize and characterize biochar. Graphite was used as a susceptor to facilitate precise pyrolysis temperature control. Potassium hydroxide (KOH) powder serves as a catalyst, influencing the char yields and properties. Torrefied raw sawdust at various temperatures (125–175 °C) enhances biochar yields (24–29 wt %). The feedstocks sawdust and polystyrene are characterized by elemental, proximate, and TGA examinations. Furthermore, comprehensive surface, crystallographic, FTIR, and SEM-EDX analyses are performed on microwave copyrolyzed biochar. The developments in BET surface area during copyrolysis show changes concerning pretreatment temperatures: 125 °C (5.6 m2/g) < 150 °C (6.8 m2/g) < 175 °C (8.6 m2/g). Functional groups connected to the alcohols’ O–H bend and C–O stretching vibrations are detected in the biochar samples through FTIR analysis. Sharp peaks with 2θ values between 33.2° and 36.2° appear in the XRD scan of biochar, indicating the presence of crystalline components in the sample. The EDX results demonstrated that the components of biochar included Mg, C, O, and Ca, indicating that it could have plenty of advantageous applications. The study highlights the obstruction of sawdust char’s porous structures by polystyrene, hindering volatile emissions and leading to increased heating rates. These findings underscore the unique contributions of this method to biochar production.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Diabetic wound healing activated by supramolecular cascade reaction

引用

Chinese chemical Letters 2023年第1期34卷 1-2页

作者： Fang-Fang Shen Yuguo Wang Leyong Wang Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China Ultrasound Department Nanjing Lishui District Hospital of Traditional Chinese MedicineNanjing 211200China Key Laboratory of Mesoscopic Chemistry of MOE Jiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Diabetes is a chronic disease,and its complications such us diabetic foot ulcer and other chronic wounds often cause great pain to *** wounds are more prone to bacterial infection due to the environment of high blood sugar,resulting in difficult wound healing[1].Therefore,how to protect the wound and cure drug-resistant bacterial infections in diabetes is an important scientific problem that needs to be solved.

关键词： wound healing Diabetic

来源：评论

学校读者我要写书评

暂无评论

Efficient and stable perovskite solar cells by build-inπ-columns and ionic interfaces in covalent organic frameworks

引用

Nano Research 2023年第7期16卷 9387-9397页

作者： Riming Nie Xiaokai Chen Zhongping Li Weicun Chu Si Ma Changqing Li Xiaoming Liu Yonghua Chen Zhuhua Zhang Wanlin Guo State Key Laboratory of Mechanics and Control of Mechanical Structures Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of EducationInstitute for Frontier ScienceNanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul 120-749Republic of Korea College of Chemistry Jilin UniversityChangchun 130012China Department of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)50 UNIST-gilEonyang-eupUljugunUlsan 44919Republic of Korea Key Laboratory of Flexible Electronics(KLoFE) School of Flexible Electronics(Future Technologies)&Institute of Advanced Materials(IAM)Nanjing Tech University(Nanjing Tech)Nanjing 211816China

Perovskite solar cells(PSCs)have attracted much attention due to their rapidly increased power conversion efficiencies,however,their inherent poor long-term stability hinders their *** degradation of PSCs first comes from the degradation of hole transport materials(HTMs).Here,we report the construction of periodicπ-columnar arrays and ionic interfaces over the skeletons by introducing cationic covalent organic frameworks(C-COFs)to the ***π-columnar arrays can optimize the charge transport ability and energy levels of the hole transport layer and suppress the degradation of HTM,and ionic interfaces over the skeletons can produce stronger electric dipole and electrostatic interactions,as well as higher charge *** C-COFs were designed and synthesized via Schiff base reaction by using 1,3,5-triformylphloroglucinol as a neutral knot and dimidium bromide as cationic *** neutral COFs(N-COFs)were also synthesized as a reference by using 3,8-diamino-6-phenylphenanthridine as neutral *** with cationic COF exhibit the highest efficiency of 23.4%with excellent humidity and thermal *** the best of our knowledge,this is the highest efficiency among the meso-structured PSCs fabricated by a sequential process.

关键词： cationic covalent organic framework(C-COF) π-columnar arrays ionic interfaces charge density perovskite solar cells

来源：评论

学校读者我要写书评

暂无评论

Bi and S Co-doping g-C_(3)N_(4)to Enhance Internal Electric Field for Robust Photocatalytic Degradation and H_(2) Production

引用

Chinese Journal of Structural Chemistry 2022年第6期41卷 69-78页

作者： Yan Hu Xibao Li Weiwei Wang Fang Deng Lu Han Xiaoming Gao Zhijun Feng Zhi Chen Juntong Huang Fanyan Zeng Fan Dong School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051China Department of Chemistry and Chemical Engineering Shaanxi Key Laboratory of Chemical Reaction EngineeringYan’an UniversityYan’an 716000China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731China

By adjusting the type and proportion of doping elements in the g-C_(3)N_(4)-based photocatalyst,the internal electric field(IEF)strength of the semiconductor can be *** can effectively enhance the driving force of charge separation in the photocatalytic *** is found that the introduction of appropriate concentration of Bi and S into the skeleton structure of g-C_(3)N_(4)can achieve efficient degradation of tetracycline(TC)and other pollutants in the liquid environment and excellent photocatalytic H_(2)evolution performance(1139μmol·L^(-1)·h^(-1)).Since the prepared samples have similar crystal structures,the relative strength of IEF can be *** can be used as the basis for adjusting the IEF strength of g-C_(3)N_(4)-based semiconductor by element *** addition,the Bi and S co-doped g-C_(3)N_(4)samples after solvothermal reflux show good chemical stability and can reduce the nanostructure defects caused by co-doping of heteroatoms,thus it provides a novel solution for the construction of g-C_(3)N_(4)-based dual-function photocatalyst with high activity and stability.

关键词： photocatalysis g-C_(3)N_(4) co-doping IEF strength antibiotic

来源：评论

学校读者我要写书评

暂无评论

Pickering multiphase materials using plant-based cellulosic micro/nanoparticles

Aggregate

引用

Aggregate 2024年第2期5卷 130-145页

作者： Wei Liu Bo Pang Meng Zhang Jiayi Lv Ting Xu Long Bai Xu-Min Cai Shuangquan Yao Siqi Huan Chuanling Si Tianjin Key Laboratory of Pulp and Paper Tianjin University of Science and TechnologyTianjinChina Department of Materials and Environmental Chemistry Stockholm UniversityStockholmSweden Key Laboratory of Bio-based Material Science and Technology(Ministry of Education) Northeast Forestry UniversityHarbinChina Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control College of Light Industry and Food EngineeringGuangxi UniversityNanningChina Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical EngineeringNanjing Forestry UniversityNanjingChina Department of Chemistry and Biological Engineering University of British ColumbiaVancouverCanada

Pickering multiphase systems stabilized by solid particles have recently attracted increasing attention due to their excellent *** various solid stabilizers,natural and renewable cellulosic micro/nanoparticles that are derived from agricultural and forestry sources have become promising candidates for Pickering stabilization due to their unique morphological features and tunable surface *** this review,recent progress on forming and stabilizing Pickering multiphase systems using cellulosic colloidal particles is summarized,including the physicochemical factors affecting their assembly at the interfaces and the preparation methods suitable for producing Pickering *** addition,relevant application prospects of corresponding Pickering multiphase materials are ***,current challenges and future perspectives of such renewable Pickering multiphase systems are *** review aims to encourage the utilization of cellulosic micro/nanoparticles as key components in the development of Pickering systems,leading to enhanced performance and unique functionalities.

关键词： cellulose nanocrystals cellulose nanofibrils cellulosic micro/nanoparticles Pickering emulsions Pickering foams

来源：评论

学校读者我要写书评

暂无评论

A self-healing coating based on facile pH-responsive nanocontainers for corrosion protection of magnesium alloy

引用

Journal of Magnesium and Alloys 2022年第3期10卷 904-919页

作者： Yuejun Ouyang Lin-Xin Li Zhi-Hui Xie Lili Tang Fuhui Wang Chuan-Jian Zhong Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol(PVA)Fiber Material Huaihua UniversityHuaihua 418000PR China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province/Institute of Synthesis and Application of Functional Materials College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002PR China Shenyang National Laboratory for Materials Science Northeastern University3-11 Wenhua RoadShenyang 110819PR China Department of Chemistry State University of New York at BinghamtonBinghamtonNY 13902USA

The preparation of pH-responsive nanocontainers by typical silane modification of the mesoporous silica nanoparticle(MSN)surface is usually high-cost,complex,and time-consuming,which remains a great challenge for effective corrosion protection of magnesium ***,a new strategy to construct pH-responsive nanocontainers(MSN-MBT@LDH)is *** nanocontainers consist of corrosion inhibitor(2-mercaptobenzothiazole,MBT)loaded MSN core and layered double hydroxide(LDH)nanosheet shell serving as *** successful loading of MBT and encapsulation by LDH nanosheets were confirmed by a series of characterization such as scanning transmission electron microscopy coupled with energy dispersive X-ray spectroscopy(STEM-EDS)and N2 adsorption/desorption *** pH-responsive feature of the nanocontainers was demonstrated by determination of the MBT concentration in buffer solutions with different pH values.A smart corrosion protection system on Mg alloy is obtained by incorporating the synthesized nanocontainers into a self-assembled nanophase particle(SNAP)*** electrochemical tests and visual observations show that the hybrid coating has the best barrier properties and robustness in corrosion protection in NaCl corrosive solutions in comparison with the control *** present method simplifies the synthesis processes of nanocontainers and eliminates the potential detrimental effect of excess gatekeepers on the *** findings provide new insights into the preparation of scalable *** self-healing coatings are expected to have widespread applications for corrosion protection of Mg alloy and other metals.

关键词： Mg alloy Coating Corrosion Layered double hydroxide Nanocontainer.

来源：评论

学校读者我要写书评

暂无评论

Electrolyte dependence for the electrochemical decarboxylation of medium-chain fatty acids (n-octanoic acid) into fuel on Pt electrode

引用

materials Reports(Energy) 2024年第2期4卷 64-70页

作者： Zhenmin Zhang Dezhang Ren Dian Zhang Tiantian Hu Congyuan Zeng Nengneng Xu Zhibao Huo Jinli Qiao College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai201306PR China Department of Mechanical Engineering Southern University and A&M CollegeBaton RougeLA70807USA State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai201620PR China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092PR China

The deoxygenation of organic acids, important biomass feedstocks and derivatives, to synthesize hydrocarbon products under mild electrochemical conditions, holds significant importance for the production of carbon-neutral biofuels. There is still limited research on the influential factors of the electrochemical decarboxylation reaction of medium-chain fatty acids. In this study, n-octanoic acid (OA) was chosen as the research subject to investigate the electrochemical decarboxylation behavior of OA on a platinum electrode, focusing on the influence of different alkali metal cations (Li^(+), Na^(+), K^(+)), common anions (SO^(4)^(2−), Cl^(−)), and electrolyte pH. It was found that KOH as an electrolyte exhibited the best performance for OA. Possibly, the larger size of K^(+) increased the alkalinity of the electrode surface, facilitating OA deprotonation. LiOH electrolyte reduced the solubility of OA, thereby inhibiting the decarboxylation reaction. SO^(4)^(2−) exhibited a weak promoting effect on the decarboxylation reaction of OA, while Cl^(−) showed no adverse effect although Cl^(−) may adsorb on the electrode surface. Furthermore, unlike short-chain fatty acids, medium-chain OA can only achieve efficient decarboxylation under alkaline conditions due to its solubility properties. This study provides references and foundations for future efforts to enhance the efficiency of electrochemical decarboxylation synthesis of hydrocarbon biofuels from medium-chain fatty acids.

关键词： Fatty acids Kolbe reaction Decarboxylation Hydrocarbon Electrolyte

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：