检索结果-内蒙古大学图书馆

Industrial Chemistry & Materials 2024年第2期2卷 321-327页

作者： Lei Ying Yu Han Beien Zhu Yi Gao Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Phonon Science Research Center for Carbon Dioxide Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China Key Laboratory of Low-Carbon Conversion Science&Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China

Gold nanoparticles(NPs)exhibit remarkable catalytic activity in low-temperature CO oxidation and their performance is highly dependent on size and ***,the underlying mechanism isn't fully understood ***,we combine density functional theory calculations,a multiscale structure reconstruction model,and kinetic Monte Carlo simulations to investigate the activity and structure sensitivity of Au NPs under different reaction *** results indicate that increasing the partial pressure ratio of O_(2) to CO leads to the decrease of optimal reaction temperature accompanied with the increase of *** low temperatures,the morphology of the NPs evolves to expose a higher proportion of(110)facets to promote the activity ***,the size dependence analysis suggests that O_(2)-rich conditions are favorable for small-sized NPs,while CO-rich conditions favor the large-sized *** findings not only enrich our basic understanding of the structure–reactivity relationship and the origin of structure sensitivity in gold-catalysis,but provide a guide for rational design of Au catalysts.

关键词： Kinetic Monte Carlo CO oxidation Gold catalysis Nanoparticles

来源：评论

学校读者我要写书评

暂无评论

Furfural residues derived nitrogen-sulfur co-doped sheet-like carbon: An excellent electrode for dual carbon lithium-ion capacitors

引用

Green Energy & Environment 2024年第9期9卷 1427-1439页

作者： Xiaoying Guo Yan Qiao Zonglin Yi Christian Marcus Pedersen Yingxiong Wang Xiaodong Tian Peide Han College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan030024China College of Chemistry Taiyuan University of TechnologyTaiyuan030024China State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan030001China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan030001China University of Chinese Academy of Sciences Beijing100049China Department of Chemistry University of CopenhagenUniversitetsparken 5DK-2100 CopenhagenDenmark

The state-of-the-art lithium-ion capacitors (LICs),consisting of high-capacity battery-type anode and high-rate capacitor-type cathode,can deliver high energy density and large power density when comparing with traditional supercapacitors and lithium-ion batteries,***,the ion kinetics mismatch between cathode and anode leads to unsatisfied cycling lifetime and anode *** efforts have been devoted to solving the abovementioned *** promising strategy is altering high conductive hard carbon anode with excellent structural stability to match with activated carbon cathode,assembling dual-carbon *** this contribution,one-pot in-situ expansion and heteroatom doping strategy was adopted to prepare sheet-like hard carbon,while activated carbon was obtained involving *** persulfate was used as expanding and doping agent *** furfural residues (FR) were served as carbon *** resulting hard carbon (FRNS-HC) and activated carbon (FRNS-AC)show excellent electrochemical performance as negative and positive electrodes in a lithium-ion battery (LIB).To be specific,374.2 m Ah g^(-1)and 123.1 m Ah g^(-1)can be achieved at 0.1 A g^(-1)and 5 A g^(-1)when FRNS-HC was tested as *** combined with a highly porous carbon cathode (S_(BET)=2961 m^(2)g^(-1)) synthesized from the same precursor,the LIC showed high specific energy of147.67 Wh kg^(-1)at approximately 199.93 W kg^(-1),and outstanding cycling life with negligible capacitance fading over 1000 *** study could lead the way for the development of heteroatom-doped porous carbon nanomaterials applied to Li-based energy storage applications.

关键词： Furfural residue Ammonium persulfate Sheet-like carbon Lithium-ion capacitors Hard carbon

来源：评论

学校读者我要写书评

暂无评论

Self-template-oriented synthesis of lead-free perovskite Cs_(3)Bi_(2)I_(9) nanosheets for boosting photocatalysis of CO_(2) reduction over Z-scheme heterojunction Cs_(3)Bi_(2)I_(9)/CeO_(2)

引用

Journal of Energy Chemistry 2022年第6期31卷 348-355,I0010页

作者： You-Xiang Feng Guang-Xing Dong Ke Su Zhao-Lei Liu Wen Zhang Min Zhang Tong-Bu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China

Lead halide perovskite (LHP) nanocrystals have been intensely studied as photocatalysts for artificial photosynthesis in recent ***,the toxicity of lead in LHP seriously limits their potential for widespread ***,we first present the synthesis of 2D lead-free halide perovskite (Cs_(3)Bi_(2)I_(9)) nanosheets with self-template-oriented method,in which BiOI/Bi_(2)O_(2) nanosheets were used as the template and Bi ion source *** facile electrostatic self-assembly strategy,a Z-scheme heterojunction composed of Cs_(3)Bi_(2)I_(9)nanosheets and CeO_(2) nanosheets (Cs_(3)Bi_(2)I_(9)/CeO_(2)-3:1) was constructed as photocatalyst for the photo-reduction of CO_(2) coupled with the oxidation of H_(2)*** to the matching energy levels and the close interfacial contact between Cs_(3)Bi_(2)I_(9)and CeO_(2) nanosheets,the separation efficiency of the photogenerated carriers in Cs_(3)Bi_(2)I_(9)/CeO_(2)-3:1 composite was significantly ***,the environment-friendly halide perovskite heterojunction Cs_(3)Bi_(2)I_(9)/CeO_(2)-3:1presents impressive photocatalytic activity for the reduction of CO_(2)to CH_(4)and CO with an electron consumption yield of 877.04μmol g^(-1),which is over 7 and 15 times higher than those of pristine Cs_(3)Bi_(2)I_(9)and CeO_(2)nanosheets,exceeding the yield of other reported bismuth-based perovskite for photocatalytic CO_(2)reduction.

关键词： Lead-free perovskite Z-scheme heterojunction Cs_(3)Bi_(2)I_(9)nanosheets Photocatalytic CO_(2)reduction H_(2)O oxidation

来源：评论

学校读者我要写书评

暂无评论

Acetate-assistant efficient cation-exchange of halide perovskite nanocrystals to boost the photocatalytic CO_(2) reduction

引用

Nano Research 2022年第3期15卷 1845-1852页

作者： Jialin Cheng Yanfei Mu Liyuan Wu Zhaolei Liu Ke Su Guangxing Dong Min Zhang Tongbu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China

The judicious implantation of active metal cations into the surface of semiconductor nanocrystal(NC)through cation-exchange is one of the facile and viable strategies to enhance the activity of catalysts for photocatalytic CO_(2)reduction,by shortening the transfer pathway of photogenerated carriers and increasing the active sites ***,cation-exchange is hard to achieve for halide perovskite NCs owing to the stable octahedron of[PbX6]4−with strong interaction between halogen and ***,we report a facile method to overcome this obstacle by replacing partial Br−with acetate(Ac−)to generate CsPbBr_(3) NC(coded as CsPbBr_(3−x)Ac_(x)).A small amount of Ac−instead of Br−does not change the crystal structure of halide *** to the weaker interaction between acetate and lead in comparison with bromide,the corresponding octahedron structure containing acetate in CsPbBr_(3−x)Ac_(x) can be easily opened to realize efficient cation-exchange with Ni^(2+) *** resulting high loading amount of Ni^(2+) as active site endows CsPbBr_(3−x)Ac_(x) with an improved performance for photocatalytic CO_(2)reduction under visible light irradiation,exhibiting a significantly increased CO yield of 44.09μmol·g^(−1)·h^(−1),which is over 8 and 3 times higher than those of traditional pristine CsPbBr_(3) and nickel doped CsPbBr_(3) NC,*** work provides a critical solution for the efficient metal doping of low-cost halide perovskite NCs to enhance their photocatalytic activity,promoting their practical applications in the field of photocatalysis.

关键词： CO_(2)reduction halide perovskite nanocrystal cation-exchange photocatalysis surface doping

来源：评论

学校读者我要写书评

暂无评论

Highly controlled structured catalysts for on-board methanol reforming

引用

Journal of Energy Chemistry 2022年第5期31卷 19-26页

作者： Zhuangdian Liang Gang Wang Gaofeng Zeng Jie Zhang Zhiyong Tang CAS Key Lab of Low-Carbon Conversion Science and Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China School of Chemistry and Material Science University of Science and Technology of ChinaHefei 230026AnhuiChina School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

The on-board methanol steam reforming(MSR) has long been considered as an effective approach to insitu produce hydrogen for fuel cell vehicles(FCVs). However, the conventional MSR catalyst pellets suffer from easy breakage during the vehicle movement, leading to increased pressure drop and reduced system stability. Herein, we introduce an integrated method to prepare the highly controlled structured catalysts based on coupled processes: direct prototyping the structured substrate using digital light processing(DLP) 3D printing technology, in-situ dynamic crystallization of active components assisted by magnetic resonance imaging(MRI) and calcination. The synthesized catalyst owns a gradient layer of active component, and exhibits better MSR performance, higher mechanical strength, reduced pressure drop, higher Cu dispersion and better adhesion of active compounds when compared with the conventional powder and pellet catalysts. The demonstrated successful application proves the feasibility of developed method,which has great potential to be used for preparing precisely other monolithic catalysts with customized structures.

关键词： Structured catalyst 3D printing Magnetic Resonance Imaging In-situ heterogeneous crystallization Methanol steam reforming

来源：评论

学校读者我要写书评

暂无评论

Impact of pitch fraction oxidation on the structure and sodium storage properties of derived carbon materials

引用

新型炭材料(中英文) 2025年第2期40卷 421-439页

作者： QI Su-xia YANG Tao SONG Yan ZHAO Ning LIU Jun-qing TIAN Xiao-dong WU Jin-ru LI Hui LIU Zhan-jun Shanxi Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China National Institute of Clean-and-Low-Carbon Energy Beijing 102211China

Pitch produced by the lique-faction of coal was divided into two frac-tions:soluble in toluene(TS)and insol-uble in toluene but soluble in pyridine(TI-PS),and their differences in molecu-lar structure and oxidation activity were *** different carbon materi-als were produced from them by oxida-tion in air(350℃,300 mL/min)fol-lowed by carbonization(1000℃ in Ar),and the effect of the cross-linked structure on their structure and sodium storage properties was *** results showed that the two pitch fractions were obviously different after the air *** TS fraction with a low degree of condensation and abundant side chains had a stronger oxidation activity and thus introduced more cross-linked oxygen-containing functional groups C(O)―O which prevented carbon layer rearrangement during the *** a result,a disordered hard carbon with more defects was formed,which improved the electrochemical ***,the carbon materials derived from TS(O-TS-1000)had an obvious disordered structure and a larger layer spacing,giving them better sodium storage perform-ance than those derived from the TI-PS fraction(O-TI-PS-1000).The specific capacity of O-TS-1000 was about 250 mAh/g at 20 mA/g,which was 1.67 times higher than that of O-TI-PS-1000(150 mAh/g).

关键词： Pitch fractions Air oxidation Derived carbon materials Na^(+)storage

来源：评论

学校读者我要写书评

暂无评论

Epitaxially Growing 2D RGB Trichromatic Cocrystal Nanomeshes to Trigger Cross-Modulation White Light Emission

引用

Chinese Journal of Chemistry 2024年第24期42卷 3379-3386页

作者： Wenyubin Luo Cheng Zhang Shan Yang Lei Ding Yang Li Yanqiu Sun Qichun Zhang School of Chemistry and Life Sciences Suzhou University of Science and TechnologySuzhouJiangsu 215009China Key Laboratory of Efficient Low-carbon Energy Conversion and Utilization of Jiangsu Provincial Higher Education Institutions School of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouJiangsu 215009China Department of Materials Science and Engineering Department of ChemistryCenter of Super-Diamond and Advanced Films(COSDAF)&Hong Kong Institute of Clean EnergyCity University of Hong KongHong Kong 999077China

Considering their oriented crystalline structure and high luminescent efficiency,the exploration of multi-component organic cocrystal systems with tunable supramolecular nanostructures and potential RGB light emission has emerged as a captivating but challenging ***,we propose a straightforward synthetic strategy to precisely govern the assembly,structure and structure-property relationship of organic *** employing the single-crystalline template-assisted epitaxial growth(SCT-EG)method,the two-dimensional(2D)highly-aligned cocrystal nanomeshes are firstly developed to afford an exceptional RGB trichromatic system,triggering cross-modulation white light emission(WLE)with remarkable stability and regeneration capacity over six *** transformation from random 1D microstructures to uniformly-oriented 2D nanomeshes can be attributed to the regulatory competitive intermolecularπ-π,CT interactions,and partial H bond interactions among ***,the successful construction of 2D RGB trichromatic cocrystal nanomeshes system holds promise to generate full-color display,which can function as multicolor inks for photonic dynamic recognition,information encryption,and decryption.

关键词： Organic cocrystal Nanomesh RGB trichromatic system Cross-modulation white light emission Competitive intermolecular interactions Organic optoelectronics Photoelectric performances 2D materials

来源：评论

学校读者我要写书评

暂无评论

Elimination of Buried Interface Defects for Highly Efficient and Stable Wide-Bandgap Perovskite Solar Cells

引用

Chinese Journal of Chemical Physics 2025年第2期38卷 231-239,I0020-I0034,I0040,I0041页

作者： Kun Chen Yu Chen Yang Shen Weijian Tang Xiaojia Zheng WenHua Zhang Shangfeng Yang Sichuan Research Center of New Materials Institute of Chemical MaterialsChina Academy of Engineering PhysicsChengdu 610200China Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education) Shanghai Jiao Tong UniversityShanghai 200240China Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan UniversityKunming 650000China Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringSynergetic Innovation Center of Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China

As one of the important components of high-effi-ciency perovskite/silicon series devices,wide-bandgap(WBG)perovskite solar cells(PSCs)have been suffering from serious carrier transport barriers and huge open-circuit voltage deficit de-rived from non-radiative recombination,especial-ly at the buried interface that are often ***,we combined cationic and anion passiva-tion strategies via ammonium tetra-n-butyl tetrafluoroborate(TBABF_(4))pre-treating the buried *** calculation predicts that the tetrabutylammonium(TBA^(+))organic cations and(tetrafluoroborate)BF_(4)^(−)anions can easily interact with charged interfacial *** further confirm the enhance-ment of carrier transport performance and decrease in defect density upon TBABF4 ***,a power conversion efficiency of 21.35%with an ultrahigh filling factor of 84.12%is obtained for 1.68 eV-WBG inverted *** addition,the device with TBABF4 pre-treatment demonstrates excellent shelf,thermal,and operational stability.

关键词： Wide-bandgap Buried interface Carrier transport Stablility Defect passiva-tion

来源：评论

学校读者我要写书评

暂无评论

Direct carbon dioxide hydrogenation to produce bulk chemicals and liquid fuels via heterogeneous catalysis

引用

Chinese Journal of Catalysis 2022年第8期43卷 2045-2056页

作者： Zixuan Zhou Peng Gao CAS Key Laboratory of Low‐Carbon Conversion Science and Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China University of the Chinese Academy of Sciences Beijing 100049China

The hydrogenation of carbon dioxide(CO_(2))to produce chemicals and transportation liquid fuels in huge demand via heterogeneous thermochemical catalysis achieved using renewable energy has received increasing attention,and substantial advances have been made in this research field in recent *** this study,we summarize our progress in the rational design and construction of highly efficient catalysts for CO_(2) hydrogenation to methanol,lower olefins,aromatics,and gasolineand jet fuel-range *** structure‐performance relationship,nature of the active sites,and mechanism of the reactions occurring over these catalysts are explored by combining computational and experimental *** results of this study will promote further fundamental studies and industrial applications of heterogeneous catalysts for CO_(2) hydrogenation to produce bulk chemicals and liquid fuels.

关键词： carbon dioxide hydrogenation Heterogeneous catalysis Coupling reaction Rational design Reaction mechanism

来源：评论

学校读者我要写书评

暂无评论

Simultaneously Optimizing Molecular Stacking and Phase Separation via Solvent-Solid Hybrid Additives Enables Organic Solar Cells with over 19%Efficiency

引用

Chinese Journal of Chemistry 2024年第24期42卷 3234-3242页

作者： Haicui Liu Keli Shi Jing Lai Seonghun Jeong Can Zhu Jinyuan Zhang Zhi-Guo Zhang Changduk Yang Beibei Qiu Yongfang Li Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information EngineeringZhejiang Normal UniversityJinhuaZhejiang 321004China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China College of Materials Science and Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China School of Energy and Chemical Engineering Perovtronics Research CenterLow Dimensional Carbon Materials CenterUlsan National Institute of Science and Technology(UNIST)50 UNIST-gilUlju-gunUlsan 44919South Korea

Given the crucial role of film morphology in determining the photovoltaic parameters of organic solar cells(OSCs),solvent or solid additives have been widely used to realize fine-tuned film morphological features to further improve the performance of ***,most high-performance OSCs are processed only using single component additive,either solvent additive or solid ***,a simple molecular building block,namely thieno[3,4-b]thiophene(TT),was utilized as the solid additive to coordinate with the widely used solvent additive,1-chloronaphthalene(CN),to modulate the film *** investigations revealed that the addition of TT could prevent the excessive aggregation to form a delicate nanoscale phase separation,leading to enhanced charge transport and suppressed charge recombination,as well as superior photovoltaic ***,the PM6:Y6 based OSCs with the addition of hybrid additive of CN+TT demonstrated the optimal PCE of 18.52%,with a notable FF of 79.6%.More impressively,the PM6:Y6:PC71BM based ternary OSCs treated with the hybrid additives delivered a remarkable efficiency of 19.05%,which ranks among the best values of Y6-based OSCs reported so *** work highlights the importance of the hybrid additive strategy in regulating the active layer morphology towards significantly improved performance.

关键词： Organic solar cells Morphology regulation Solid additive Synergistic effects Photovoltaic properties

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：