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In-situ regeneration of Bi^(0) active site to renew surface activation for long-term stable and efficient CO_(2)-to-formate electrosynthesis

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Journal of Energy Chemistry 2024年第12期99卷 703-711页

作者： Haichuan He Congcheng Yang Liu Deng Li Luo Yahui Jiang Liqiang Wang Yi Zhang Minghui Yang You-Nian Liu Hunan Provincial Key Laboratory of Micro&Nano Materials Interface Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083HunanChina College of Material Chemistry and Chemical EngineeringHangzhou Normal UniversityHangzhou 311121ZhejiangChina Henan Province Industrial Technology Research Institute of Resources and Materials School of Material Science and EngineeringZhengzhou UniversityZhengzhou UniversityZhengzhou 450001HenanChina

CO_(2)-to-formate electrosynthesis with high selectivity and stability has been a long-sought ***,most catalysts undergo structural and valence state changes due to surface oxidation during operation or storage,resulting in decreased catalytic ***,we report a efficient and stable BiIn@Cu-foam electrode through the in-situ regeneration of Bi^(0) active sites to renew the surface *** electronic structure of Bi site can be regulated by introducing In,thereby enhancing the adsorption strength of**** optimized electrode exhibits over 90%FE_(formate)at a wide potential window(-0.9–-2.2 V),and formation rate for 3.15 mM cm^(-1)h^(-1).Especially,the electrode can maintain the high performance at continuously electrolysis for more than 300 h,or for more than 50 cycles,even repeated operation and storage for more than 2 *** work provides a promising candidate and new insight to construct industrially viable stable Bi-based catalyst for formate electrosynthesis.

关键词： In-situ regeneration Stability Formate Bismuth eCO_(2)RR

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In-situ embedding CoTe catalyst into 1D-2D nitrogen-doped carbon to didirectionally regulate lithium-sulfur batteries

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Nano Research 2022年第10期15卷 8972-8982页

作者： Bin Li Peng Wang Baojuan Xi Ning Song Xuguang An Weihua Chen Jinkui Feng Shenglin Xiong Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringState Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100China Key Laboratory of Mechanical Engineering of Education School of Mechanical EngineeringChengdu UniversityChengdu 610106China Key Laboratory of Material Processing and Mold of Ministry of Education Zhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Shandong UniversityJinan 250061China

Lithium-sulfur(Li-S)batteries have been widely investigated attributed to their advantages of high energy density and cost ***,it is still limited by the uncontrolled shuttle effect of the sulfur cathode and the promiscuous dendrite growth over the lithium *** handle the above issues,the highly conductive CoTe catalyst is precisely loaded onto nitrogendoped nanotube and graphene-like carbon(CoTe NCGs),which is employed as a bi-functionally integrated *** the lithium anode,the CoTe NCGs with excellent lithiophilic property effectively regulate the uniform deposition of lithium and achieve the effect of suppressing the disorderly growth of lithium *** the sulfur cathode,the electrochemical conversion of lithium polysulfides(LiPSs)is catalyzed to mitigate the notorious shuttle *** view of the bifunctionality of CoTe NCGs,the assembled full cell can be steadily stable even for 800 cycles at a high rate of 2 C,and the capacity decay rate is only 0.05%per *** areal capacity of 6.0 mAh·cm^(−2) is well retained after 50 cycles under the conditions of high sulfur loading,poor electrolyte(a low electrolyte-to-sulfur ratio,E/S=4.2),and low negative to positive capacity ratio(N/P=1.6:1).

关键词： CoTe nanocrystals dual-functional shuttling effect lithium dendrite Li-S batteries

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Photoinduced interface activation strategy for enhancing photocatalytic hydrogen production performance of plasmonic nano Bi/Ni based metalorganic framework

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science China Materials 2024年第10期67卷 3151-3159页

作者： Baichao Zhang Xuchuan Cao Chao Suo Jing Cui Xiaochuan Duan Shaohui Guo Xian-Ming Zhang Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationCollege of ChemistryCollege of Chemical Engineering and TechnologyTaiyuan University of TechnologyTaiyuan 030024China

Utilizing plasmonic non-noble metal nanoparticles(NPs)for photocatalytic hydrogen evolution reaction is a significant step toward green energy ***,optimizing the interface between non-noble metal NPs and semiconducting materials in metal-semiconductor composites remains challenging owing to the inevitable surface oxide layers of non-noble metal NPs because the surface oxide layers of non-noble metal NPs can suppress the transfer of photoinduced carriers,leading to poor photocatalytic ***,we propose a photoinduced interface activation strategy to reduce the number of oxide layers based on a dynamic charge-transfer mechanism under illumination conditions,with Bi NPs and a Ni-based metal-organic framework(MOF)selected as model *** light illumination,the photoinduced charges and plasmonic hot electrons heavily pooled at the interface between the Bi NPs and Ni-MOF,resulting in the reduction of the oxide layer on the surface of Bi,thus attenuating its hindering effect on charge *** phenomenon led to a dynamically enhanced carrier concentration in the Bi/Ni-MOF composite,with an outstanding photocatalytic hydrogen evolution rate of 5822μmol g^(−1)h^(−1)achieved with the *** results of this study indicate that our strategy provides a new method for optimizing plasmonic non-noble metal Bi NPs with oxide layers.

关键词： plasmonic non-noble metal interface activation metal-organic framework charge transfer photocatalytic hydrogen

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Unveiling the twinning and dynamic recrystallization behavior and the resultant texture evolution in the extruded Mg-Bi binary alloys during hot compression

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Journal of Materials science & Technology 2022年第10期105卷 274-285页

作者： Yu-qin Zhang Wei-li Cheng Hui Yu Hong-xia Wang Xiao-feng Niu Li-fei Wang Hang Li School of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China School of Materials Science and Engineering Hebei University of TechnologyTianjin 300132China

The twinning behavior, dynamic recrystallization(DRX) mechanism and the resultant texture evolution of the extruded Mg-xBi(x=0.5 wt.%, 2.0 wt.%) alloys were systematically investigated during hot compression at the strain rate of 10 s^(-1) and temperature of 200℃. The results indicate that the types and intensities of the texture are greatly dependent on the twining behavior and DRX mechanism. At the initial stage, the evolution of texture is mainly domination by the formation and variation of {1012} extension twins, which is benefcial to the compression direction(CD)-tilted basal texture. With an increase in the strain, the texture evolution is more greatly regulated by the DRX mechanism. Besides, the pyramidal slip and basal slip are activated during the compression process, resulting in the Schmid factors(SF) of pyramidal slip remain at ~0.4 and the average SFs for basal slip increase from 0.2 to0.34 as the strain increase. These fndings provide a new insight into controlling the texture of wrought Mg-Bi-based alloys during hot deformation processing.

关键词： Wrought Mg-Bi alloys Hot deformation Twinning Dynamic recrystallization Dislocation slip Texture

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Synergetic enhancement of selectivity for electroreduction of CO_(2)to C_(2)H_(4)by crystal facet engineering and tandem catalysis over silver-incorporated-cuprous oxides

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Materials Reports(Energy) 2023年第2期3卷 164-172,I0004页

作者： Gang Dong Chuang Xue Meng Li Tiantian Zhang Dongsheng Geng Li-Min Liu Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083PR China School of Physics Beihang UniversityBeijing100083PR China

Electrochemical CO_(2)reduction to C_(2)H_(4)can provide a sustainable route to reduce globally accelerating CO_(2)emissions and produce energy-rich chemical ***,the poor selectivity in C_(2)H_(4)electrosynthesis limits its implementation in industrially interesting ***,we report a composite structured catalyst composed of Ag and Cu_(2)O with different crystal faces to achieve highly efficient reduction of CO_(2)to C_(2)H_(4).The catalyst composed of Ag and octahedral Cu_(2)O enclosed with(111)facet exhibits the best CO_(2)electroreduction performance,with the Faradaic efficiency(FE)and partial current density reaching 66.8%and 17.8 mA cm2 for C_(2)H_(4)product at-1.2 VRHE in 0.5 M KHCO_(3),*** characterization and electrochemical test analysis indicate that the high selectivity for C_(2)H_(4)product stems from the synergistic effect of crystal faces control engineering and tandem ***,Ag can provide optimal availability of CO intermediate by suppressing hydrogen evolution;subsequently,C-C coupling is promoted on the intimate surface of Cu_(2)O with facetdependent *** insights gained from this work may be beneficial for designing efficient multicomponent catalysts for improving the selectivity of electrochemical CO_(2)reduction reaction to generate C2þproducts.

关键词： Cu_(2)O/Ag tandem catalysts Facet-dependent selectivity CO_(2)reduction reaction C_(2)H_(4) Electrocatalysis Synergistic effect

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Unraveling the degradation mechanism of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2) at the high cut-off voltage for lithium ion batteries

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Journal of Energy Chemistry 2023年第2期77卷 428-437,I0011页

作者： Liming Wang Qingmei Su Bin Han Weihao Shi Gaohui Du Yunting Wang Huayv Li Lin Gu Wenqi Zhao Shukai Ding Miao Zhang Yongzhen Yang Bingshe Xu School of Materials Science&Engineering Shaanxi University of Science and TechnologyXi’an 710021ShaanxiChina Materials Institute of Atomic and Molecular Science Shaanxi University of Science and TechnologyXi’an 710021ShaanxiChina School of Materials Science&Engineering Tsinghua UniversityBeijing 100084China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032ShanxiChina Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of TechnologyTaiyuan 030024ShanxiChina

LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)layered oxides have been regarded as promising alternative cathodes for the next generation of high-energy lithium ion batteries(LIBs)due to high discharge capacities and energy densities at high operation ***,the capacity fading under high operation voltage still restricts the practical ***,the capacity degradation mechanism of NCM811 at atomic-scale is studied in detail under various cut-off voltages using aberration-corrected scanning transmission electron microscopy(STEM).It is observed that the crystal structure of NCM811 evolution from a layered structure to a rock-salt phase is directly accompanied by serious intergranular cracks under 4.9 V,which is distinguished from the generally accepted structure evolution of layered,disordered layered,defect rock salt and rock salt phases,also observed under 4.3 and 4.7 *** electron energy loss spectroscopy analysis also confirms the reduction of Ni and Co from the surface to the bulk,not the previously reported only Li/Ni interlayer *** degradation mechanism of NCM811 at a high cut-off voltage of4.9 V is attributed to the formation of intergranular cracks induced by defects,the direct formation of the rock salt phase,and the accompanied reduction of Ni^(2+)and Co^(2+)phases from the surface to the bulk.

关键词： Ni-rich layered cathode Electrochemical performance Degradation mechanism Crack Atomic scale

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Acceptor-Type Singlet Fission Material Based on Strong Absorption Tetracyanothienoquinoid Skeleton

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CCS Chemistry 2024年第9期6卷 2142-2149页

作者： Senhao Wang Xiang-Yang Liu Mengfan Zhang Long Wang Ganglong Cui Hongbing Fu Jiannian Yao Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024 College of Chemistry and Material Science Sichuan Normal UniversityChengdu 610068 Key Laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875 Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal UniversityBeijing 100048 Beijing National Laboratory for Molecules Science(BNLMS) Key Laboratory of PhotochemistryInstitute of ChemistryChinese Academy of SciencesBeijing 100190

The practical efficiency of singlet fission(SF)-based photovoltaic devices is still far from satisfactory due to the limited scope of SF materials suitable for device application and the scarcity of schemes available for triplet *** SF materials identi-fied to date are typically electron donors while acceptor-type SF materials remain largely ***,the combination of a conventional electron donor and SF-active electron acceptor could circumvent the competitive energy transfer channel and better play the unique advantages of the SF process,which might be an adequate alternative for practical *** this work,we presented a new acceptor-type SF material based on a tetracyanothienoquinoid *** a quinoid skeleton exhibited strong absorption,ultrafast SF process,and excellent *** transient spectroscopy and multireference calculations(XDWCASPT2),the SF dynamics were examined featuring the rapid generation and subsequent annihilation and/or partial dissociation of multiexciton ***,our results not only provide a robust acceptor-type SF material but also suggest an adequate donor–acceptor alternative for SF-based solar cells,which could pave the way for the practical application of such a potential process.

关键词： singlet fission acceptor quinoidal skeleton mutiexciton state multireference calculation transient spectroscopy

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X-ray-ultraviolet–visible-near-infrared photoresponsesrealized in a lead-free hybrid perovskite ferroelectricthrough light-induced ferro-pyro-phototronic effect

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InfoMat 2024年第10期6卷 96-107页

作者： Dongying Fu Yanli Ma Shufang Wu Lin Pan Qi Wang Ruifang Zhao Xian-Ming Zhang Junhua Luo Institute of Crystalline Materials Key Laboratory of Quantum Optics and Quantum Optics DevicesShanxi UniversityKey Laboratory of Materials for Energy Conversion and Storage of Shanxi ProvinceTaiyuanShanxithe People's Republic of China College of Chemistry Key Laboratory of Interface Science and Engineering in Advanced MaterialMinistry of EducationTaiyuan University of TechnologyTaiyuanShanxithe People's Republic of China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujianthe People's Republic of China

Due to the built-in electric field induced by spontaneous polarization in hybridperovskite (HP) ferroelectrics, the devices based on them exhibit excellent performancein self-powered photodetection. However, most of the self-poweredphotodetector are made of lead-based HP ferroelectrics and have a relativelynarrow photoresponse waveband. Although lead-free HPs solve the problem oflead toxicity, their optoelectronic performance is inferior to that of lead-basedHPs and photoresponse waveband is limited by its optical band gap, whichhinders their further application. To solve this problem, herein, a lead-free HPferroelectric (HDA)BiI5 (HDA is hexane-1,6-diammonium) with large spontaneouspolarization shows an enhanced photocurrent and achieves x-ray-ultraviolet–visible-near-infrared (x-ray-UV–Vis–NIR) photoresponse through theferro-pyro-phototronic (FPP) effect. The ferroelectric, pyroelectric, and photovoltaiccharacteristics coupled together in a single-phase (HDA)BiI5 ferroelectricis an effective way to improve the performance of the devices. What isparticularly attractive is that the FPP effect not only improves the optoelectronicperformance of (HDA)BiI_(5), but also achieves broadband photoresponsesbeyond its optical absorption range. Especially, the current boosting with anexceptional contrast of 1100% and 2400% under 520 and 637 nm, respectively,which is associated with FPP effect. Meanwhile, single crystal self-poweredphotodetector based on (HDA)BiI5 also exhibit significant FPP effects evenunder high-energy x-ray, which owns an outstanding sensitivity of 170.7 μCGy^(-1) cm^(-2) and a lower detection limit of 266 nGy s^(-1) at 0 V bias. Therefore, it is of great significance to study the coupling of multiple physical effects andimprove device performance based on lead-free HP ferroelectrics.

关键词： broadband photoresponse ferro-pyro-phototronic effect hybrid perovskite lead-free ferroelectric self-powered photodetection

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Nucleus-targeting orange-emissive carbon dots delivery adriamycin for enhanced anti-liver cancer therapy

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Chinese Chemical Letters 2024年第6期35卷 421-426页

作者： Qiang Li Jiangbo Fan Hongkai Mu Lin Chen Yongzhen Yang Shiping Yu The Second Hospital of Shanxi Medical University Taiyuan 030001China Shanxi Medical University Taiyuan 030001China Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032China

Carbon dots(CDs)with precise targeting function show great potential in the field of drug delivery *** this study,the functionalized nucleus-targeting orange-emissive CDs with nuclear localization sequence(NLS)were loaded with adriamycin(DOX)to obtain a nucleus-targeting orange-emissive CDs drug delivery system(CDs-NLS-DOX),which delivered DOX to tumor cell nuclei to enhance its anti-tumor *** drug carrier orange-emissive CDs showed excitation-independent behavior,stable and enhanced imaging capability and good biocompatibility in vitro and in ***,the CDs-NLS could target the nuclei efficiently,and the CDs-NLS-DOX complexes had a high drug loading rate(59.4%)after loading DOX,exhibiting p H-dependent DOX release behavior through breaking acylhydrazone bond in a weak acidic *** addition,the CDs-NLS-DOX complexes exhibited an enhanced killing activity against human hepatoma cells(HepG2).The in vivo therapeutic effects on HepG2 nude mice transplanted tumors indicated the CDs-NLS-DOX had a stronger ability to inhibit tumor growth compared to free *** short,CDs-NLS-DOX is expected to be a precise and efficient nucleus-targeting nano-drug delivery system for tumor treatment.

关键词： Carbon dots Nucleus-targeting Adriamycin Drug delivery system Liver cancer therapy

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Graphene quantum dots induced performance enhancement in memristors

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Nanoscale 2025年第23期17卷 14082-14102页

作者： He, Jintao Zhou, Guangdong Sun, Bai Yan, Lingpeng Lang, Xiaochen Yang, Yongzhen Hao, Haotian MOE Key Laboratory of Interface Science and Engineering in Advanced Materials College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China College of Artificial Intelligence Brain-Inspired Computing Intelligent Control of Chongqing Key Lab Southwest University Chongqing400715 China Xi'an Jiaotong University Shaanxi Xi'an710049 China College of Artificial Intelligence Institute of Biomedical Engineering Taiyuan University of Technology Taiyuan030024 China

With the rapid development of information technology, the demand for miniaturization, integration, and intelligence of electronic devices is growing rapidly. As a key device in the non-von Neumann architecture, memristors can perform computations while storing data, enhancing computational efficiency and reducing power consumption. Memristors have become pivotal in driving the advancement of artificial intelligence (AI) and Internet of Things technologies. Combining the electronic properties of graphene with the size effects of quantum dots, graphene quantum dot (GQD)-based memristors exhibit potential applications in constructing brain-inspired neuromorphic computing systems and achieving AI hardware acceleration, making them a focal point of research interest. This review provides an overview of the preparation, mechanism, and application of GQD-based memristors. Initially, the structure, properties, and synthesis methods of GQDs are introduced in detail. Subsequently, the memristive mechanisms of GQD-based memristors are presented from three perspectives: the metal conductive filament mechanism, the electron trapping and detrapping mechanism, and the oxygen vacancy conductive filament mechanism. Furthermore, the different application scenarios of GQD-based memristors in both digital and analog types are summarized, encompassing information storage, brain-like artificial synapses, visual perception systems, and brain-machine interfaces. Finally, the challenges and future development prospects of GQD-based memristors are discussed. © 2025 The Royal Society of Chemistry.

关键词： Quantum computers

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