检索结果-南通市图书馆

Enabling heterogeneous catalysis to achieve carbon neutrality: Directional catalytic conversion of CO_(2) into carboxylic acids

引用

Carbon Energy 2024年第3期6卷 1-35页

作者： Xiaofei Zhang Wenhuan Huang Le Yu Max García-Melchor Dingsheng Wang linjie zhi Huabin Zhang KAUST Catalysis Center(KCC) King Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia Key Laboratory of Chemical Additives for China National Light Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi'anChina State Key Lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijingChina School of Chemistry CRANN and AMBERResearch CentresTrinity College DublinCollege GreenDublinIreland Department of Chemistry Tsinghua UniversityBeijingChina Advanced Chemical Engineering and Energy Materials Research Center China University of Petroleum(East China)QingdaoChina

The increase in anthropogenic carbon dioxide(CO_(2))emissions has exacerbated the deterioration of the global environment,which should be controlled to achieve carbon neutrality.Central to the core goal of achieving carbon neutrality is the utilization of CO_(2) under economic and sustainable conditions.Recently,the strong need for carbon neutrality has led to a proliferation of studies on the direct conversion of CO_(2) into carboxylic acids,which can effectively alleviate CO_(2) emissions and create high-value chemicals.The purpose of this review is to present the application prospects of carboxylic acids and the basic principles of CO_(2) conversion into carboxylic acids through photo-,electric-,and thermal catalysis.Special attention is focused on the regulation strategy of the activity of abundant catalysts at the molecular level,inspiring the preparation of high-performance catalysts.In addition,theoretical calculations,advanced technologies,and numerous typical examples are introduced to elaborate on the corresponding process and influencing factors of catalytic activity.Finally,challenges and prospects are provided for the future development of this field.It is hoped that this review will contribute to a deeper understanding of the conversion of CO_(2) into carboxylic acids and inspire more innovative breakthroughs.

关键词： carbon neutrality carboxylic acids CO_(2)conversion heterogeneous catalyst in situ technology

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A stretchable fabric as strain sensor integrating electromagnetic shielding and electrochemical energy storage

引用

Nano Research 2023年第11期16卷 12753-12761页

作者： Xu Li Xiaohui Sun Jiuyue Zhang Song Xue linjie zhi Advanced Chemical Engineering and Energy Materials Research Center China University of Petroleum(East China)Qingdao 266580China School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580China College of New Energy China University of Petroleum(East China)Qingdao 266580China

Multifunctional intelligent fabric plays an integral role in health management,human–machine interaction,wireless energy storage and conversion,and many other artificial intelligence fields.Herein,we demonstrate a newly developed MXene/polyaniline(PANI)multifunctional fabric integrated with strain sensing,electrochemical energy storage,and electromagnetic shielding properties.The multifunctional fabric-based strain sensor possesses a real-time signal response at a sizeable tensile strain of 100%with a minute strain of 0.5%,maintaining a stable and consistent signal response even after 3000 stretch–release cycles.In addition,the multifunctional fabric exhibits excellent electromagnetic shielding capabilities,achieving a total shielding effectiveness value of up to 43 dB,and in the meantime shows attractive electrochemical energy storage performance as an electrode in a supercapacitor,offering a maximum specific capacity and energy density of 522.5 mF·cm^(−2)and 18.16μWh·cm^(−2),respectively.Such a multifunctional intelligent fabric offers versatile opportunities to develop smart clothes for various artificial intelligent applications.

关键词： strain sensor MXene polyaniline(PANI) multifunctional intelligent fabric electromagnetic interference(EMI)shielding electrochemical energy storage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cascading V_(2)O_(3)/N-doped carbon hybrid nanosheets as high-performance cathode materials for aqueous zinc-ion batteries

引用

Chinese Chemical Letters 2022年第3期33卷 1430-1434页

作者： Yue Niu Denghui Wang Yingjie Ma linjie zhi CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100039China

In recent years, especially when there is increasing concern about the safety issue of lithium-ion batteries (LIBs), aqueous Zn-ion batteries (ZIBs) have been getting a lot of attention because of their cost-effectiveness, materials abundance, high safety, and ecological friendliness. Their working voltage and specific capacity are mainly determined by their cathode materials. Vanadium oxides are promising cathode materials for aqueous ZIBs owing to their low cost, abundant resources, and multivalence. However, vanadium oxide cathodes still suffer from unsatisfactory capacity, poor stability, and low electrical conductivity. In this work, cascading V_(2)O_(3)/nitrogen doped carbon (V_(2)O_(3)/NC) hybrid nanosheets are prepared for high-performance aqueous ZIBs by pyrolyzing pentyl viologen dibromide (PV) intercalated V_(2)O5 nanosheets. The unique structure features of V_(2)O_(3)/NC nanosheets, including thin sheet-like morphology, small crystalline V_(2)O_(3) nanoparticles, and conductive NC layers, endow V_(2)O_(3)/NC with superior performance compared to most of the reported vanadium oxide cathode materials for aqueous ZIBs. The V_(2)O_(3)/NC cathode exhibits the discharge capacity of 405 mAh/g at 0.5 A/g, excellent rate capability (159 mAh/g at 20 A/g), and outstanding cycling stability with 90% capacity retention over 4000 cycles at 20 A/g.

关键词： Aqueous zinc ion batteries Cathode materials Vanadium oxides Nitrogen doped carbon 2D nanosheets High performance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An orientated mass transfer in Ni-Cu tandem nanofibers for highly selective reduction of CO_(2) to ethanol

引用

Fundamental Research 2023年第5期3卷 786-795页

作者： Xiaoxiong Huang Debin Kong Yingjie Ma Bin Luo Bin Wang linjie zhi CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD 4072Australia Institute of New Energy College of Chemical EngineeringChina University of Petroleum(East China)QingdaoChina

Electrochemically reducing CO_(2)to ethanol is attractive but suffers from poor selectivity.Tandem catalysis that integrates the activation of CO_(2)to an intermediate using one active site and the subsequent formation of hydrocarbons on the other site offers a promising approach,where the control of the intermediate transfer between different catalytic sites is challenging.We propose an internally self-feeding mechanism that relies on the orientation of the mass transfer in a hierarchical structure and demonstrate it using a one-dimensional(1D)tandem core-shell catalyst.Specifically,the carbon-coated Ni-core(Ni/C)catalyzes the transformation of CO_(2)-to-CO,after which the CO intermediates are guided to diffuse to the carbon-coated Cu-shell(Cu/C)and experience the selective reduction to ethanol,realizing the orientated key intermediate transfer.Results show that the Faradaic efficiency for ethanol was 18.2%at-1 V vs.RHE(V_(RHE))for up to 100 h.The following mechanism study supports the hypothesis that the CO_(2)reduction on Ni/C generates CO,which is further reduced to ethanol on Cu/C sites.Density functional theory calculations suggest a combined effect of the availability of CO intermediate in Ni/C core and the dimerization of key∗CO intermediates,as well as the subsequent proton-electron transfer process on the Cu/C shell.

关键词： CO_(2)electroreduction Ethanol Ni-Cu Core-Shell Tandem

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inside-out dual-doping effects on tubular catalysts:Structural and chemical variation for advanced oxygen reduction performance

引用

Nano Research 2022年第1期15卷 361-367页

作者： Yang Gao Debin Kong Jiaxu Liang Daliang Han Bin Wang Quan-Hong Yang linjie zhi CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China University of Chinese Academy of Sciences Beijing 100049China

Dual-doping of carbon,especially the combination of nitrogen and a secondary heteroatom,has been demonstrated efficient to optimize the oxygen reduction reaction(ORR)performance.However,the optimum dual-doping is still not clear due to the lack of strong experimental proofs,which rely on a reliable method to prepare carbon materials that can rule out the interference factors and then emphasize only the doping effects.In this work,an inside-out doping method is reported to prepare carbon submicrotubes(CSTs)as a material to study the principles of designing dual-doping catalysts for ORR.The interference factors including the metal impurities and doping gradient in the bulk phase are excluded,and the doping effects including the structural and chemical variation of carbon are studied.P-doping exhibited a higher pore-forming ability to perforate carbon and a lower doping content,but a higher ORR catalytic activity as compared with S-and B-doped N-CSTs,demonstrating the N,P co-doping is more efficient in making carbon-based catalysts for ORR.First-principle calculations reveal that the edge C situated around the oxidized P site nearby a graphitic N atom is the active site that shows the lowest ORR overpotential comparable to Pt-based catalysts.This study suggests that the catalytic activity of dual-heteroatoms-doped carbons not only depends on the intrinsic chemical bonding between heteroatoms and carbon,but also is affected by the structural variation generated by introducing different atoms,which can be extended to the study of other kinds of functionalization of carbon and potential reactions besides ORR.

关键词： dual-doping phosphorus carbon tubes oxygen reduction metal-free catalysts

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Theoretical kinetic quantitative calculation predicted the expedited polysulfides degradation

引用

Nano Research 2023年第10期16卷 12035-12042页

作者： Siyu Zhang Xianchao Rong Tao Li Wenjie Ren Hao Ren linjie zhi Mingbo Wu Zhongtao Li State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China National Engineering Center of Coal slurry and Coal Chemical Co. Ltd.LTDJinan 250014China

The performance of lithium-sulfur battery is restricted by the lower value of electrode conductance and the sluggish LiPSs degradation kinetics.Unfortunately,the degradation rate of polysulfides was mostly attributed to the catalytic energy barrier in previous,which is unable to give accurate predictions on the performance of lithium-sulfur battery.Thereby,a quantitative framework relating the battery performance to catalytic energy barrier and electrical conductivity of the cathode host is developed here to quantitate the tendency.As the model compound,calculated-Ti_(4)O_(7)(c-Ti_(4)O_(7))has the highest comprehensive index with excellent electrical conductivity,although the catalytic energy barrier is not ideal.Through inputting the experimental properties such as impedance and charge/discharge data into the as-build model,the final conclusion is still in line with our prediction that Ti_(4)O_(7)host shows the most excellent electrochemical performance.Therefore,the accurate model here would be attainable to design lithium-sulfur cathode materials with a bottom–up manner.

关键词： lithium-sulfur batteries shuttle effect polysulfide degradation first-principles calculation semi-empirical model

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Viologens-based redox mediators with tunable HOMO–LUMO energy gap for highly effective hydrogen peroxide electrosynthesis

引用

Nano Research 2023年第12期16卷 12936-12941页

作者： Yang Gao Xiaohui Xu Yue Niu Xinran Hu Zeyu Li Longkun Yang linjie zhi Bin Wang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China The Beijing Key Laboratory for Nano-Photonics and Nano-Structure(NPNS) Department of PhysicsCapital Normal UniversityBeijing 100048China College of New Energy China University of Petroleum(East China)Qingdao 266580China

In comparison with the developing nano-carbon catalysts,some small organic molecules are also emerging as catalysts with typical features,however,their working mechanism is still unclear.Here,we synthesized a series of viologen-based heterogeneous catalysts with the same molecular skeleton but different substituent groups through anion exchange engineering.These viologen-based molecules were used as a model catalyst to investigate the underlying structure–function relationship for small molecules-based H_(2)O_(2) electrosynthesis.Differing from the commonly reported carbon-based electrocatalysts,viologens can produce H_(2)O_(2) in a synergistic manner,which means that viologens can not only directly catalyze oxygen reduction but also serve as a redox mediator.We found that the ring current and H_(2)O_(2) selectivity of viologens deliver an increasing trend with the increase of the alkyl chain length of alkyl-substituted viologens and further increase when using benzyl as the substituent group.As a result,a benzyl-substituted viologen(BV)delivers the best electrocatalytic performance among the samples,including the highest H_(2)O_(2) selectivity of 96.9%at 0.6 V and the largest ring current density of about 13.6 mA·mmol-1.Furthermore,density functional theory(DFT)calculations disclose that the carbon atoms bonded with positively charged N are the active sites and the small highest occupied molecular orbital(HOMO)–lowest unoccupied molecular orbital(LUMO)energy gap of BV is beneficial to the synergistic mechanism for H_(2)O_(2) production.This work sheds new insight into the efficient H_(2)O_(2) production in a synergistic manner for small molecules-based electrocatalysts.

关键词： viologens electrocatalysis hydrogen peroxide redox mediator oxygen reduction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synergistically tuning the graphitic degree,porosity,and the configuration of active sites for highly active bifunctional catalysts and Zn-air batteries

引用

Nano Research 2022年第9期15卷 7959-7967页

作者： Yang Gao Debin Kong Fengli Cao Shuai Teng Tao Liang Bin Luo Bin Wang Quan-Hong Yang linjie zhi CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China College of New Energy Research Center for Advanced Chemical Engineering and Energy MaterialsChina University of Petroleum(East China)Qingdao 266580China Nanomaterials Centre Australian Institute for Bioengineering and Nanotechnology and School of Chemical EngineeringThe University of QueenslandBrisbaneQLD 4072Australia University of Chinese Academy of Sciences Beijing 100049China

Rational design and tailoring of the structural features of Co-N-C catalysts are urgently required to construct highly efficient bifunctional non-noble metal electrocatalysts for both oxygen evolution reaction(OER)and oxygen reduction reaction(ORR).Herein,we report a series of carbon-based catalysts with varied structural features,specifically the graphitic degree of carbon,porosity,and the configuration of active sites,and their effects on bifunctional oxygen electrocatalytic reactions.Through the synergistic tuning of these structural factors,the well-tailored Co-N-C catalyst exhibits a high bifunctional electrocatalytic activity,as revealed by a half-wave potential of 0.84 V for ORR and a low overpotential of 420 mV at 10 mA·cm^(−2)for OER.More impressively,the Zn-air battery using the optimum catalyst delivers excellent performance including a peak power density of 125.2 mW·cm_(−2)and a specific capacity of 790.8 mAh·gZn^(−1),as well as stable cycling durability,outperforming the noble metalsbased catalysts.The first-principles calculations reveal that the interlayer interaction between the pyridinic N-doped graphene and the confined Co nanoparticles increases the electronic states of the active C atoms near the Fermi level,thus enhancing the adsorption of the HOO*intermediate and generating superior catalytic activity for bifunctional oxygen electrocatalysis.By comprehensively studying the structural factors of catalysts,the bifunctional catalytic behaviors,the use in a practical Zn-air device,and theoretical simulations,this work may also give inspirations to the design,use,and understanding of other kinds of catalysts.

关键词： electrocatalysis bifunctional Co-N-C ZIFs Zn-air battery

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Amphoteric covalent organic framework as single Li+superionic conductor in all-solid-state

引用

Nano Research 2023年第1期16卷 528-535页

作者： Zhangzhen Cheng Liping Lu Siyu Zhang Haiyan Liu Tao Xing Yan Lin Hao Ren Zhongtao Li linjie zhi Mingbo Wu State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China Shandong Energy Group Co. Ltd.Jinan 250014China

As a novel class of porous crystalline solids,covalent organic frameworks(COFs)based electrolyte can combine the advantages of both inorganic and polymer electrolytes,leading to such as higher structural stability to inhibit lithium dendrites and better processing facility for improving interfacial contact.However,the ionic components of Li salt tend to be closely associated in the form of ion pairs or even ionic aggregates in the channel of COFs due to strong coulombic interactions,thus resulting in slow ionic diffusion dynamics and low ionic conductivity.Herein,we successfully designed and synthesized a novel single-ion conducting nitrogen hybrid conjugated skeleton(NCS)as all solid electrolyte,whose backbone is consisted with triazine and piperazine rings.A loose bonding between the triazine rings and cations would lower the energy barrier during ions transfer,and electrostatic forces with piperazine rings could“anchor”anions to increase the selectivity during ions transfer.Thus,the NCSelectrolyte exhibits excellent room temperature lithium-ion conductivity up to 1.49 mS·cm−1 and high transference number of 0.84 without employing any solvent,which to the best of our knowledge is one of the highest COF-based electrolytes so far.Moreover,the fabricated all-solid-state lithium metal batteries demonstrate highly attractive properties with quite stable cycling performance over 100 cycles with 82%capacity reservation at 0.5 C.

关键词： covalent organic framework solid-state electrolyte superionic conductor triazine amphoteric

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Activated pyrolysed bacterial cellulose as electrodes for supercapacitors

引用

Science China Chemistry 2016年第6期59卷 713-718页

作者： Xiangjun Wang Debin Kong Bin Wang Yan Song linjie zhi Key Laboratory of Carbon Materials Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

In this paper, the bacterial celluloses(BCs) were pyrolysed in nitrogen and then activated by KOH to form a porous three- dimension-network electrode material for supercapacitor applications. Activated pyrolysed bacterial cellulose(APBC) samples with enlarged specific surface area and enhanced specific capacitances were obtained. In order to optimize electrochemical properties, APBC samples with different alkali-to-carbon ratios of 1, 2 and 3 were tested in two electrodes symmetrical capacitors. The optimized APBC sample holds the highest specific capacitance of 241.8 F/g, and the energy density of which is 5 times higher than that of PBC even at a current density of 5 A/g. This work presents a successful practice of preparing electrode material from environment-friendly biomass, bacterial cellulose.

关键词：细菌纤维素超级电容器电极材料活性氧电化学性能比表面积电流密度比电容

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：