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Proton antagonist membrane towards exclusive CO_(2)reduction

Nano Research 2023年第4期16卷 4589-4595页

作者： Taishi Xiao Yao Ma Shicheng Zeng Xiang Yao Tong Ye Hongbin Li Wei Li Zhengzong Sun Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai 200433China School of Microelectronics and State Key Laboratory of ASIC and System Fudan UniversityShanghai 200433China

Membrane electrode assembly reactor offers great promise toward practical CO_(2)***,traditional proton exchange membrane possesses strong acidic chemical environment,which facilitates undesired hydrogen evolution *** we report a proton antagonist strategy,through which the proton diffusion pathways have been severely impeded by Na+cation to produce an alkaline-rich *** this new membrane electrode assembly,we can significantly suppress the hydrogen evolution and achieve a Faradaic efficiency of 95.7%for CO with 51.5%energy *** addition,our proton antagonist membrane outperforms the commercial anion exchange membrane in both conductivity and oxidation resistance lifetime,which are crucial for large scale electrolysis of carbon neutral chemicals.

关键词： CO_(2)reduction proton antagonist membrane electrode assembly

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Will the fibers of the future be considered fibers?

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National science Review 2024年第10期11卷 15-17页

作者： Dewen Xu Ya Liu Hailiang Wang Wei Yan Changjun Jiang Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Department of Computer Science and Technology Tongji University

Fiber materials are key materials that have changed human history and promoted the progress of human civilization. In ancient times, humans used feathers and animal skins for clothing, and later they widely employed natural fibers such as cotton, hemp, silk and wool to make fabrics(Fig. 1a). Chinese ancestors had mastered the art of natural fiber weaving as early as the Neolithic *** thousand years ago, people were already familiar with and adept at techniques for spinning natural fibers [1].

关键词： future will considered fibers

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Recent progress on two-dimensional ferroelectrics:Material systems and device applications

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Chinese Physics B 2023年第12期32卷 40-53页

作者：范芷薇渠靖媛王涛温滟安子文姜琦涛薛武红周鹏许小红 Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education and School of Chemistry and Materials Science Shanxi Normal UniversityTaiyuan 030031China State Key Laboratory of ASIC&System School of MicroelectronicsFudan UniversityShanghai 200433China

Ferroelectrics are a type of material with a polar structure and their polarization direction can be inverted reversibly by applying an electric *** have attracted tremendous attention for their extensive applications in non-volatile memory,sensors and neuromorphic ***,conventional ferroelectric materials face insulating and interfacial issues in the commercialization *** contrast,two-dimensional(2D)ferroelectric materials usually have excellent semiconductor performance,clean van der Waals interfaces and robust ferroelectric order in atom-thick layers,and hold greater promise for constructing multifunctional ferroelectric optoelectronic devices and nondestructive ultra-high-density ***,2D ferroelectrics have obtained impressive breakthroughs,showing overwhelming ***,firstly,the progress of experimental research on 2D ferroelectric materials is ***,the preparation of 2D ferroelectric devices and their applications are ***,the future development trend of 2D ferroelectrics is looked at.

关键词： two-dimensional materials ferroelectrics device applications

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Recent Advances in Electrochemical-Based Silicon Production Technologies with Reduced Carbon Emission

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Research 2024年第1期2023卷 209-236页

作者： Feng Tian Zhongya Pang Shen Hu Xueqiang Zhang Fei Wang Wei Nie Xuewen Xia Guangshi Li Hsien-Yi Hsu Qian Xu Xingli Zou Li Ji Xionggang Lu State Key Laboratory of Advanced Special Steel&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and Engineering Shanghai University99#Shangda RoadShanghai 200444China Center for Hydrogen Metallurgy Technology Shanghai UniversityShanghai 200444China State Key Laboratory of ASIC and System School of MicroelectronicsFudan University220#Handan RoadShanghai 200433China School of Energy and Environment Department of Materials Science and EngineeringCity University of Hong KongKowloon TongHong KongChina

Sustainable and low-carbon-emission silicon production is currently one of the main focuses for the metallurgical and materials science ***,considered a promising strategy,has been explored to produce silicon due to prominent advantages:(a)high electricity utilization efficiency;(b)low-cost silica as a raw material;and(c)tunable morphologies and structures,including films,nanowires,and *** review begins with a summary of early research on the extraction of silicon by *** has been placed on the electro-deoxidation and dissolution–electrodeposition of silica in chloride molten salts since the 21st century,including the basic reaction mechanisms,the fabrication of photoactive Si films for solar cells,the design and production of nanoSi and various silicon components for energy conversion,as well as storage ***,the feasibility of silicon electrodeposition in room-temperature ionic liquids and its unique opportunities are *** this basis,the challenges and future research directions for silicon electrochemical production strategies are proposed and discussed,which are essential to achieve large-scale sustainable production of silicon by electrochemistry.

关键词： directions electrodeposition electricity

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Construction of mesoporous silica-implanted tungsten oxides for selective acetone gas sensing

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Chinese Chemical Letters 2024年第11期35卷 492-498页

作者： Jichun Li Zhengren Wang Yu Deng Hongxiu Yu Yonghui Deng Xiaowei Cheng Kaiping Yuan Department of Chemistry Shanghai Stomatological Hospital&School of StomatologyState Key Laboratory of Molecular Engineering of PolymersShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsiCHEMFudan UniversityShanghai 200433China Frontier Institute of Chip and System State Key Laboratory of ASIC and SystemFudan UniversityShanghai 200433China State Key Lab of Transducer Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050China

As a key biomarker for noninvasive diagnosis of diabetes,the selective detection of trace acetone in exhaled gas using a portable and low-cost device remains a great *** metal oxide(SMO)based gas sensors have drawn signification attention due to their potential in miniaturization,user-friendliness,high cost-effectiveness and selective real-time detection for noninvasive clinical ***,we propose a one-pot solvent evaporation induced tricomponent co-assembly strategy to design a novel ordered mesoporous SMO of silica-implanted WO_(3)(Si O_(2)/WO_(3))as sensing materials for trace acetone *** controlled co-assembly of silicon and tungsten precursors and amphiphilic diblock copolymer poly(ethylene oxide)-block-polystyrene(PEO-b-PS),and the subsequent thermal treatment enable the local lattice disorder of WO_(3)induced by the amorphous silica and the formation of ordered mesoporous Si O_(2)/WO_(3)hybrid walls with a unique metastableε-phase WO_(3)*** obtained mesoporous SiO_(2)/WO_(3)composites possess highly crystalline framework with large uniform pore size(12.0-13.3 nm),high surface area(99-113 m^(2)/g)and pore volume(0.17-0.23 cm^(3)/g).Typically,the asfabricated gas sensor based on mesoporous 2.5%Si O_(2)/WO_(3)exhibits rapid response/recovery rate(5/17 s),superior sensitivity(R_(air)/R_(gas)=105 for 50 ppm acetone),as well as high selectivity towards *** limit of detection is as low as 0.25 ppm,which is considerably lower than the thresh value of acetone concentration(>1.1 ppm)in the exhaled breath of diabetic patients,demonstrating its great prospect in real-time monitoring in diabetes ***,the mesoporous 2.5%Si O_(2)/WO_(3)sensor is integrated into a wireless sensing module connected to a smart phone,providing a convenient real-time detection of acetone.

关键词： Mesoporous materials ε-Tungsten oxide Silica-implanted Acetone sensing Real-time detection

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Enhancing crystal integrity and structural rigidity of CsPbBr_(3) nanoplatelets to achieve a narrow colorsaturated blue emission

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Light(science & Applications) 2024年第5期13卷 985-997页

作者： Qianqian Huang Wenxu Yin Bo Gao Qingsen Zeng Dong Yao Hao Zhang Yinghe Zhao Weijia Zheng Jiaqi Zhang Xuyong Yang Xiaoyu Zhang Andrey L.Rogach Key Laboratory of Automobile Materials MOE School of Materials Science&Engineeringand Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsJilin UniversityChangchunChina. State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchunChina. State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanHubeiChina. Department of Chemistry University of VictoriaVictoriaBCCanada. Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai UniversityShanghaiChina. Department of Materials Science and Engineering and Centre for Functional Photonics(CFP)City University of Hong KongHong Kong S.A.RChina

Quantum-confined CsPbBr_(3) perovskites are promising blue emitters for ultra-high-definition displays,but their soft lattice caused by highly ionic nature has a limited ***,we endow CsPbBr_(3) nanoplatelets(NPLs)with atomic crystal-like structural rigidity through proper surface engineering,by using strongly bound N-dodecylbenzene sulfonic acid(DBSA).A stable,rigid crystal structure,as well as uniform,orderly-arranged surface of these NPLs is achieved by optimizing intermediate reaction stage,by switching from molecular clusters to mono-octahedra,while interaction with DBSA resulted in formation of a Cs_(x)O monolayer shell capping the NPL *** a result,both structural and optical stability of the CsPbBr3 NPLs is enhanced by strong covalent bonding of DBSA,which inhibits undesired phase transitions and decomposition of the perovskite phase potentially caused by ligand ***,rather small amount of DBSA ligands at the NPL surface results in a short inter-NPL spacing in their closely-packed films,which facilitates efficient charge injection and *** photoluminescence of the produced CsPbBr_(3) NPLs is bright(nearly unity emission quantum yield)and peaks at 457 nm with an extremely narrow bandwidth of 3.7 nm at 80 K,while the bandwidth of the electroluminescence(peaked at 460 nm)also reaches a record-narrow value of 15 nm at room *** value corresponds to the CIE coordinates of(0.141,0.062),which meets Rec.2020 standards for ultra-high-definition displays.

关键词： temperature stability narrow

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CO_(2) reduction with coin catalyst

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Nano Research 2022年第5期15卷 3859-3865页

作者： Taishi Xiao Can Tang Hongbin Li Tong Ye Kun Ba Peng Gong Zhengzong Sun Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai 200433China School of Microelectronics and State Key Laboratory of ASIC and System Fudan UniversityShanghai 200433China

Most organic commodity chemicals are derived from fossil carbon *** dependency is so immense that it is difficult to compensate for the accompanying carbon footprint with current technology and chemical *** mitigate the future fossil fuel usage,it is crucial to explore alternative chemical pathways,which are both sustainable and suitable for large-scale *** we demonstrate a closed-loop carbon-neutral chemical route,using standard coin catalyst,to produce high concentrated formate and formic *** catalyst's Faradaic efficiency(FE)of formate is~95.3% with great *** chemicals are not only synthesized but also purified and utilized in zero-carbon *** successfully harvested 45%formate salt and 86.2% formic acid,for applications like anti-freezing reagent and green liquid fuel to power the fuel-cell vehicles.

关键词： closed-loop lifecycle electrocatalysis coin catalyst

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Defect physics of the quasi-two-dimensional photovoltaic semiconductor GeSe

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Chinese Physics B 2022年第11期31卷 60-66页

作者： Saichao Yan Jinchen Wei Shanshan Wang Menglin Huang Yu-Ning Wu Shiyou Chen Key Laboratory of Polar Materials and Devices(MOE)and Department of Electronics East China Normal UniversityShanghai 200241China State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China

GeSe has recently emerged as a photovoltaic absorber material due to its attractive optical and electrical properties as well as earth abundancy and low ***,the efficiency of GeSe thin-film solar cells(TFSCs)is still low compared to the Shockley–Queisser *** defects are believed to play important roles in the electrical and optical properties of GeSe thin ***,we perform first-principles calculations to study the defect characteristics of *** results demonstrate that no matter under the Ge-rich or Se-rich condition,the Fermi level is always located near the valence band edge,leading to the p-type conductivity of undoped *** Se-rich condition,the Ge vacancy(V_(Ge))has the lowest formation energy,with a(0/2–)charge-state transition level at 0.22 eV above the valence band *** high density(above 10^(17)cm^(-3))and shallow level of VGeimply that it is the p-type origin of *** Se-rich growth condition,Seihas a low formation energy in the neutral state,but it does not introduce any defect level in the band gap,suggesting that it neither contributes to electrical conductivity nor induces non-radiative *** addition,Gei introduces a deep charge-state transition level,making it a possible recombination ***,we propose that the Se-rich condition should be adopted to fabricate high-efficiency GeSe solar cells.

关键词： GeSe bulk point defect concentration photovoltaic

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Simple and effective:Superlubricity behaviour of the G-quadruplex hydrogel with high selectivity for K^(+) ions based on the ocular environment

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Friction 2024年第11期12卷 2548-2562页

作者： Hongdong WANG Jian WU Kunpeng WANG Yunjuan SU Xiacong ZHANG Yuhong LIU Jianhua ZHANG School of Mechatronic Engineering and Automation and Key Laboratory of Advanced Display and System Application Ministry of EducationShanghai UniversityShanghai 200444China State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China Department of Polymer Materials School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

Hydrogels have been the subject of significant research in the field of friction due to their exceptional lubricating *** this study,the G-quadruplex hydrogel with high selectivity for K^(+) ions was formed by introducing a mixture of G,2-formylphenylboronic acid,and polyethylene glycol diamine into simulated artificial tears solution with high transparency,and an ultra-low coefficient of friction(COF)of about 0.004 was obtained based on the simulated ocular environment,thus achieving macroscopic *** friction pairs simulating the ocular environment,to assess the frictional performance of the G-quadruplex hydrogel as both a lubricant and a friction pair based on the simulated ocular environment,we conducted experiments considering various factors such as concentration,sliding speed,and *** these experiments,it was found that superlubricity was achieved when the G-quadruplex hydrogel was applied as lubricant or friction *** effect was attributed to the three-dimensional network structure and hydrophilicity of the hydrogel,which facilitated the formation of a highly bearing and flowing hydration layer,promoting macroscopic *** to the G-quadruplex hydrogel with low concentration,the high concentration hydrogel(75 mM)exhibited increased mechanical strength and robustness in *** with biocompatibility experiments,our synthesized G-quadruplex hydrogel has excellent biocompatibility and offers a novel approach to achieve superlubricity in ocular drug delivery.

关键词： superlubricity ocular environment G-quadruplex hydrogel bio-compatibility

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Progress on two-dimensional ferrovalley materials

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Chinese Physics B 2024年第1期33卷 32-43页

作者：李平刘邦陈帅张蔚曦郭志新 State Key Laboratory for Mechanical Behavior of Materials Center for Spintronics and Quantum SystemSchool of Materials Science and EngineeringXi'an Jiaotong UniversityXi'an 710049China State Key Laboratory for Surface Physics and Department of Physics Fudan UniversityShanghai 200433China Jinan Aviation Repair Factory Jinan 250000China Department of Physics and Electronic Engineering Tongren UniversityTongren 554300China

The electron's charge and spin degrees of freedom are at the core of modern electronic devices. With the in-depth investigation of two-dimensional materials, another degree of freedom, valley, has also attracted tremendous research interest. The intrinsic spontaneous valley polarization in two-dimensional magnetic systems, ferrovalley material, provides convenience for detecting and modulating the valley. In this review, we first introduce the development of ***, the valley polarization forms by the p-, d-, and f-orbit that are discussed. Following, we discuss the investigation progress of modulating the valley polarization of two-dimensional ferrovalley materials by multiple physical fields, such as electric, stacking mode, strain, and interface. Finally, we look forward to the future developments of valleytronics.

关键词： ferrovalley valley polarization two-dimensional materials multi-field tunable

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