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MXene Ti_(3)C_(2) decorated g-C_(3)N_(4)/ZnO photocatalysts with improved photocatalytic performance for CO_(2) reduction

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Nano Materials science 2023年第2期5卷 237-245页

作者： Jianxin Li Yuhua Wang Yitong Wang Yao Guo Shiding Zhang Haixiang Song Xianchang Li Qianqian Gao Wanyu Shang Shuaishuai Hu Huibin Zheng Xifei Li Hubei Province Key Laboratory of Science in Metallurgical Process Wuhan University of Science and TechnologyWuhan430081China Henan Joint International Research Laboratory of Nanocomposite Sensing Materials Anyang Institute of TechnologyAnyang455000China School of Intelligent Manufacturing Huzhou313000China Key Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation School of Materials Science and EngineeringXi'an University of TechnologyXi'an710048China Engineering Research Center of Conducting Materials and Composite Technology Ministry of EducationXi'an710048China Center for International Cooperation on Designer Low-carbon&Environmental Materials(CDLCEM) Zhengzhou UniversityZhengzhou450001China

Photocatalytic reduction of CO_(2) is considered as a kind of promising technologies for solving the greenhouse ***,a novel hybrid structure of g-C_(3)N_(4)/ZnO/Ti_(3)C_(2) photocatalysts was designed and fabricated to investigate their abilities for CO_(2) *** demonstration,heterojunction of g-C_(3)N_(4)/ZnO can improve photogenerated carriers’separation,the addition of Ti_(3)C_(2) fragments can further facilitate the photocatalytic performance from CO_(2) to ***,g-C_(3)N_(4)/ZnO/Ti_(3)C_(2) has efficiently increased CO production by 8 and 12 times than pristine g-C_(3)N_(4) and ZnO,*** is ascribed to the photogenerated charge migration promoted by metallic Ti_(3)C_(2).This work provides a guideline for designing efficient hybrid catalysts on other applications in the renewable energy fields.

关键词： Ti_(3)C_(2)fragments ZnO G-C_(3)N_(4) CO_(2)reduction

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基于可重构光开关多态荧光聚合物的信息加密工具箱

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science China Materials 2023年第5期66卷 1949-1958页

作者：姜佳伟张培盛田勇林众张崇华崔家喜陈建陈旭东 Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine PolymersHunan Province College Key Laboratory of QSAR/QSPRSchool of Chemistry and Chemical EngineeringHunan University of Science and TechnologyXiangtan 411201China College of Chemistry and Key Laboratory of Polymeric Materials&Application Technology of Hunan Province and Key Laboratory of Advanced Functional Polymeric Materials of College of Hunan ProvinceXiangtan UniversityXiangtan 411105China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of ChemistrySun Yat-sen UniversityGuangzhou 510006China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory Jieyang 515200China

具有坚固、智能、且易于编程等特性的信息加密材料对于防止信息泄露和打击造假具有重要意义.为此,我们开发了一种信息加密材料工具箱,该工具箱基于一系列新型的自修复光开关双态(P1和P2)和多态(P3)荧光聚合物.这类聚合物含有两种二芳基... 详细信息

具有坚固、智能、且易于编程等特性的信息加密材料对于防止信息泄露和打击造假具有重要意义.为此,我们开发了一种信息加密材料工具箱,该工具箱基于一系列新型的自修复光开关双态(P1和P2)和多态(P3)荧光聚合物.这类聚合物含有两种二芳基乙烯光致变色荧光基团(SDTE和BTBA)和四重氢键构筑单元(UPy).在不同波长的光照射下,P1/P2可以在绿-猝灭/红-猝灭两态之间交替,而P3可以在红-绿-猝灭三态之间变化.它们可以作为像素单元用来制备可重构的图案和代码;所得到的图案和代码均显示出良好的机械性能和优异的光学特性,包括快速的光响应性、突出的光可逆性、优异的荧光热稳定性和抗酸碱腐蚀的能力.本文展示了该工具箱在3D代码阵列和二维码信息加密中的应用潜能.

关键词： photoswitch diarylethene self-healing polymer thermal stability information encryption

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Ultrathin PtRu Nanowires as Efficient and Stable Electrocatalyst for Liquid Fuel Oxidation Reactions

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Energy Material Advances 2022年第1期2022卷 223-230页

作者： Kun Yin Yuguang Chao Lingyou Zeng Menggang Li Fangze Liu Shaojun Guo Hongbo Li Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China School of Materials Science and Engineering Peking UniversityBeijing 100871China

Direct liquid fuel cells(DLFCs)are promising clean energy conversion devices for their high energy density,low environmental pollution,and convenient transportation and ***,the commercialization of DLFCs is still limited by the lack of highly active and stable catalysts for the anodic oxidation of liquid ***,a new class of ultrathin PtRu nanowires(NWs)with a diameter of 1.1nm was synthesized via a colloidal chemistry *** as-made ultrathin PtRu NWs can not only expose large active sites but also enhance the kinetics of methanol oxidation reaction,which was confirmed by the in situ Fourier transform infrared(FTIR)***,ultrathin PtRu NWs exhibit greatly boosted activity and stability for methanol and ethanol oxidation reactions in an alkaline medium.

关键词： spectroscopy. methanol catalyst

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Nanostructured Pt@RuO_(x) catalyst for boosting overall acidic seawater splitting

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Chinese Journal of Structural Chemistry 2024年第1期43卷 6-15页

作者： Zimo Peng Quan Zhang Gaocan Qi Hao Zhang Qian Liu Guangzhi Hu Jun Luo Xijun Liu Institute for New Energy Materials&Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin300384China School of Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China Institute for Advanced Study Chengdu UniversityChengdu610106China Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming650091China ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaLonghua DistrictShenzhen518110China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsMOE Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning530004China

In the domain of acidic water splitting,designing bifunctional catalysts that marry high activity with enduring stability is a formidable ***,we have constructed platinum-containing ruthenium oxide nanoparticles(Pt@RuO_(x)NPs)to achieve excellent overall water splitting performance in acidic ***@RuO_(x)NPs demonstrate exceptional catalytic activity for both the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in acidic seawater,requiring overpotentials of only 20 and 157 mV,respectively to achieve a current density of 10 mA cm^(-2).Furthermore,in 0.5 M H_(2)SO_(4),this catalyst exhibits high HER(19 mV)and OER(236 mV)catalytic *** two-electrode water splitting system composed of bifunctional Pt@RuO_(x)NPs requires cell voltages of only 1.442 and 1.465 V to deliver a current density of 10 mA cm^(-2)in acidic seawater and 0.5 M H_(2)SO_(4).Remarkably,this catalyst displays remarkable stability in the water splitting *** is shown that the introduction of Pt could augment oxygen vacancies and enhance catalytic activity *** synergy between Pt and Ru further contributes to the improved ***,we have observed that acidic seawater holds distinct advantages for acidic water splitting,along with a thorough exploration of the relationship between Cl^(-)concentration and catalytic *** study not only provides a strategy to improve the catalytic activity and stability of ruthenium-based catalysts for water splitting in acidic environments,but also unveils the promoting effect of Cl^(-)on the catalytic activity in acidic water splitting.

关键词： Acidic water splitting Bifunctional catalysts Pt@RuOx nanoparticles Synergistic effect

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Efficient charge relay steering in Pd nanoparticles coupled with the heterojunction for boosting CO_(2)photoreduction to C_(2)H_(6)

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science China Materials 2024年第9期67卷 2949-2956页

作者： Jiaojiao Fang Chengyang Zhu Lincan Fang Yukai Chen Huiling Hu Yan Wu Qingqing Chen Junjie Mao Key Laboratory of Functional Molecular Solids Ministry of EducationCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu241002China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation CenterSchool of Petrochemical EngineeringChangzhou UniversityChangzhou213164China

Solar-driven CO_(2)conversion to prepare value-added products is highly desirable but *** to the achievement of multi-carbon products via CO_(2)photoconversion is to break the bottlenecks of C-C coupling and multi-electron ***,a charge relay system consisting of Pd-decorated BiOCl-wrapped CuBi_(2)O_(4)is reported by taking advantage of the synergy of Pd nanoparticles(PdNPs)and heterojunction for efficient CO_(2)-to-C_(2)H_(6)*** C_(2)H_(6)production rate reached 167.1µmol g^(-1)h^(-1)with the electron selectivity of 81.1%in the absence of any sacrificial *** spectroscopic characterizations indicated that BiOCl nanosheets,acting as the charge relay,directionally transferred the photogenerated electrons from itself and CuBi2O4 nanorods to PdNPs for C-C *** coordinated ensemble of PdNPs and heterojunction significantly elevated the charge separation and transfer ***,the in-situ spectroscopic analysis supported by theoretical simulations demonstrated that the electron-rich PdNPs generated by the charge relay of PdNPs and heterojunction optimized the CO_(2)-to-C_(2)H_(6)reaction pathway and reduced the energy barrier of the key*CHOCO *** work develops an innovative strategy to design the multifunctional catalysts for the photoconversion of CO_(2)to value-added carbon products.

关键词： charge relay Pd nanoparticles heterojunction CO_(2)photoreduction C_(2)H_(6)

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Preface to the special issue on diverse applications of tungsten and related metals

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Tungsten 2021年第3期3卷 243-244页

作者： Cheng Zhong Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin 300072China

Tungsten(W)is an exceptionally strong refractory metal,which is an important chemical element used in lamp filaments and in steel to increase hardness and ***,tungsten and related metals,including molybdenum,cobalt,vanadium,tantalum,niobium,rhenium,zirconium,hafnium as well as their alloys and compounds,are also found to be effective in preparing novel energy storage *** present issue consists of nine contributions with six review papers and three original research articles.

关键词： steel metals preparing

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Binary-ternary transition metal chalcogenides interlayer coupling in van der Waals type-II heterostructure for visible-infrared photodetector with efficient suppression dark currents

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Nano Research 2022年第3期15卷 2689-2696页

作者： Guoliang Xu Danmin Liu Songyu Li Yi Wu Zhenlu Zhang Shaobo Wang Zikun Huang Yongzhe Zhang Key Laboratory of Advanced Functional Materials Ministry of EducationFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China School of Physics and Nuclear Energy Engineering Beihang UniversityBeijing 100083China School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China Key Laboratory of Optoelectronics Technology Ministry of EducationFaculty of Information TechnologyBeijing University of TechnologyBeijing 100124China

Ternary two-dimentional(2D)materials exhibit diverse physical properties depending on their composition,structure,and *** forming heterostructures with other binary materials that show similar structure,there can be numerous potential applications of these ternary 2D *** this work,we reported the structure of few-layer CrPS_(4)by X-ray diffraction,transmission electron microscope,and electron-density distribution *** also demonstrated a new application of the CrPS_(4)/MoS_(2)heterobilayer:visible-infrared photodetectors with type-II staggered band alignment at room *** response of the heterostructure to infrared light results from a strong interlayer coupling that reduces the energy interval in the junction *** the intrinsic bandgap of individual components determines wavelengths,the decrease in energy interval allows better detection of light that has a longer *** used photoluminescence(PL)spectroscopy,Kelvin probe force microscopy(KPFM)under illumination,and electrical transport measurements to verify the photoinduced charge separation between the CrPS_(4)/MoS_(2)*** forward bias,the device functioned as a highly sensitive photodetector,as the wavelength-dependent photocurrent measurement achieved the observation of optical excitation from 532 to 1,450 nm ***,the photocurrent caused by interlayer exciton reached around 1.2 nA at 1,095 nm *** demonstration of the strong interlayer coupling in the CrPS_(4)/MoS_(2)heterostructure may further the understanding of the essential physics behind binary-ternary transition metal chalcogenides heterostructure and pave a way for their potential applications in visible-infrared devices.

关键词： heterostructure MoS_(2) CrPS_(4) interlayer transition visible-infrared photodetector type-II band alignment

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Influence of Non-Polar Groups in Quaternary Ammonium Compounds on Zinc Electrodeposition Behavior

SSRN

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SSRN 2024年

作者： Qin, Zhenbo Liu, Yi Gao, Yanan Xia, Da-Hai Zhang, Yiwen Wu, Zhong Hu, Wenbin Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin300072 China Tianjin University Tianjin300072 China Key Laboratory of Advanced Ceramics and Machining Technology China

Dendritic growth is a common behavior during the electrodeposition of zinc, which degrades the compactness and thickness uniformity of the zinc film. In this work, a series of quaternary ammonium compounds (QAC) with different non-polar groups (based on the number of carbon atoms in non-polar groups represented as C1, C4, C8, C12 and C16, respectively) were introduced into the basic electrolyte to inhibit the zinc dendritic growth. The results showed that as the length in non-polar groups increased (C1, C4, C8), the deposition of zinc became smoother. Due to the non-polar groups of additives limited the stochastic diffusion of Zn2+, changed the adsorption state of the surface, a uniform zinc film was finally achieved. But with the further increase of length (C12, C16), the migration of Zn2+ to the electrode surface became extremely difficult for strong steric hindrance, resulting in a rough deposition morphology. © 2024, The Authors. All rights reserved.

关键词： Zinc

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Poly(ionic liquid)functionalization:A general strategy for strong,tough,ionic conductive,and multifunctional polysaccharide hydrogels toward sensors

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SusMat 2024年第6期4卷 65-84页

作者： Xue Yao Sufeng Zhang Ning Wei Liwei Qian Hao Ding Jingtao Liu Wenqi Song Sergiu Coseri College of Bioresources Chemical and Materials Engineering Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper DevelopmentKey Laboratory of Paper Based Functional Materials of China National Light IndustryNational Demonstration Center for Experimental Light Chemistry Engineering EducationShaanxi University of Science and TechnologyXi’anChina Technological Institute of Materials&Energy Science(TIMES) Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion DeviceSchool of Electronic InformationXijing UniversityXi’anChina “Petru Poni”Institute of Macromolecular Chemistry of Romanian Academy IasiRomania

Ionic conductive hydrogels(ICHs)prepared from natural bioresources are promising candidates for constructing flexible electronics for both commercialization and environmental sustainability due to their intrinsic ***,simultaneous realization of high stiffness,toughness,conductivity,and multifunctionality while ensuring processing simplicity is extremely ***,a poly(ionic liquid)(PIL)-macromolecule functionalization strategy within a NaOH/urea system is proposed to construct high-performance and versatile polysaccharide-based ICHs(e.g.,cellulosic ICHs).In this strategy,the elaborately designed“soft”(PIL chains)and“hard”(cellulose backbone)structures as well as the dynamic covalent and noncovalent bonds of the cross-linked networks endow the hydrogel with high mechanical strength(9.46±0.23 MPa compressive modulus),exceptional stretchability(214.3%),and toughness(3.64±0.12 MJ m^(−3)).Ingeniously,due to the inherent conductivity,design flexibility,and functional compatibility of the PILs,the hydrogels exhibit high conductivity(6.54±0.17 mS cm^(−1)),self-healing ability(94.5%±2.0%efficiency),antibacterial properties,freezing resistance,water retention,and ***,this strategy is extended to fabricate diverse hydrogels from various polysaccharides,including agar,alginate,hyaluronic acid,and guar *** addition,multimodal sensing(strain,temperature,and humidity)is realized based on the stimulus-responsive characteristics of the *** strategy opens new perspectives for the design of biomass-based hydrogels and beyond.

关键词： bioresources cellulose conductive hydrogels multiple functions poly(ionic liquids) sensors

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Phonon-mediated superconductivity in the transition metal trioxides XO3 (X=Ru,Re,Os,Ir,Pt) under pressure

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Physical Review B 2024年第17期110卷 174504页

作者： Aiqin Yang Xiangru Tao Yundi Quan Peng Zhang MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic Physics School of Physics School of Physical Science and Technology and Collaborative Innovation Center of Suzhou Nano Science and Technology

A recent experiment by P. F. Shan et al. (arXiv:2304.09011) found that rhenium trioxide ReO3, a simple metal at ambient pressure, becomes superconducting with a transition temperature as high as 17 K at 30 GPa. In this paper, we analyze the electron-phonon origin of superconductivity in rhombohedral ReO3 in detail. In addition, we also conduct a high-throughput screening of isostructural transition metal trioxides XO3 in searching for potential pressure-induced superconductors. In total, 28 XO3 compounds have been studied, of which four candidates RuO3, OsO3, IrO3, and PtO3 are predicted superconducting with the transition temperatures of 26.4, 30.3, 0.9, and 2.8 K at 30 GPa, respectively. Both IrO3 and PtO3 stay superconducting even at ambient pressure. In ReO3, RuO3,OsO3, and IrO3, the conduction electrons around the Fermi level are dominantly from the X-d and the O-2p orbitals, and their electron-phonon coupling originates from the lattice dynamics of both the heavier transition metal atom and the oxygen atom. Inclusion of spin-orbital coupling would mildly suppress the transition temperatures of these transition metal trioxide superconductors except RuO3.

关键词： Superconductivity Transition metal oxides Density functional theory

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