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SSRN 2024年

作者： Shen, Changlin Cheng, Yonggui Peng, Zhilong Chen, Shaohua Institute of Advanced Structure Technology Beijing Institute of Technology Beijing100081 China Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Beijing Institute of Technology Beijing100081 China

The outstanding adhesion ability of gecko is mainly attributed to its sophisticated hierarchical adhesive structures. The relationship between structure and function of gecko adhesion has been attracting scientific research interests. However, studies on the effect of the structural hierarchy on the interfacial switchable adhesion remain limited. In the present paper, a gecko toe-inspired hierarchically wedge-mushroom-shaped adhesive is fabricated. The first level is NdFeB particles decorated asymmetrical wedges mimicking the lamellar structures on gecko toe, which can guarantee the anisotropic adhesion in different directions, and the second level is the mushroom-shaped fibrils on the sloping surface of the wedges mimicking gecko seta arrays, which is used to enhance the normal interfacial adhesion. The fabricated hierarchical adhesive possesses the adhesion advantages of both the wedge- and mushroom-shaped structures. Switchable adhesion of the fabricated hierarchical adhesive can be realized both by loading-dragging-pulling (LDP) mode and actuation of external magnetic field. Especially, the strong adhesion and switchable adhesion achieved under the control of magnetic field can overcome the drawback of shear induced limiting normal adhesion of the wedge-based adhesives in LDP mode. Furthermore, the fabricated hierarchical adhesive can realize releasing ultra-light objects and highly efficient self-cleaning ability because the desired bending deformation of the wedged structure can be tuned by varying the direction of magnetic field. The present experimental results can provide a new strategy to achieve switchable adhesion in both normal and shear forces through hierarchically structural design combining with the help of external magnetic field. © 2024, The Authors. All rights reserved.

关键词： Adhesives

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Reducing obesity and inflammation in mice with organically-derivatized polyoxovanadate clusters

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Chinese Chemical Letters 2023年第5期34卷 631-636页

作者： Kun Chen Guoyong Dai Shengqiu Liu Yongge Wei South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou 510641China Key Lab of Organic Optoelectronics&Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou 510641China State Key Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing 100191China

Obesity,characterized by the dysregulation of energy balance in adipose tissue and other metabolic organs,is frequently accompanied by chronic low-grade *** long-acting insulin sensitizers,the organically-derivatized polyoxovanadates(POVs),can extend the dosing interval of antidiabetic drugs from hourly to almost *** this work,the protective activity of POVs is investigated by an eight-week in vivo experiment,in which a small amount of POVs was administrated orally to a mouse model of dietinduced obesity every *** present study shows that administration of POVs significantly decreases the body weight of mice,reduces adipose tissue accumulation,and simultaneously reduces adipose tissue *** addition,the anti-obesogenic population of i NKT cells is protected potentially by POVs,which subsequently alleviates visceral adipose tissue inflammation in high-fat-diet(HFD)-fed mice against diet-induced *** contrast,the change in body weight after POV treatment is the result of a substantial reduction in fat mass,with no obvious effects on lean body *** findings demonstrate that supplementary of POVs would be an effective way to combat obesity and metabolic disorders while lowering metabolic inflammation.

关键词： Polyoxovanadates Diet-induced obesity Anti-obesity Anti-inflammation Metabolic disease

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Recent advances of two-dimensional CoFe layered-double-hydroxides for electrocatalytic water oxidation

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Chinese Chemical Letters 2022年第6期33卷 2845-2855页

作者： Yi Zhou Jialai Hu Lichun Yang Qingsheng Gao College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and ApplicationsJinan UniversityGuangzhou 510632China School of Materials Science and Engineering and Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640China Ningbo Fengcheng Advanced Energy Materials Research Institute Co. Ltd.Ningbo 315000China

Oxygen evolution reaction(OER)is pivotal to drive green hydrogen generation from water electrolysis,but yet is strictly overshadowed by the sluggish reaction ***-abundant and cut-price transitionmetal compounds,particularly Co Fe layered-double-hydroxides(LDHs),show the distinct superiorities in contrast to noble metals and their *** this review,we firstly underline their fundamental issues in electrocatalytic water oxidation,including Co Fe LDHs crystal structure,the surface of(hydr)oxides confined to OER and the controversial roles of Fe species,aiming at understanding the structure-related activity and catalytic *** approaches for optimizing OER activity of Co Fe LDHs are then comprehensively overviewed,which will shed light on the different working mechanisms and provide a concise analysis of their unique ***,a perspective on the future development of Co Fe LDHs electrocatalysts is *** hope this review can give a concise and explicit guidance for the development of transition-metal-based electrocatalysts in the energy field.

关键词： CoFe layered-double-hydroxides Electrocatalytic water oxidation Two-dimensional nanostructures Surface reconstruction d-band

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Poly(ionic liquid)-crosslinked graphene oxide/carbon nanotube membranes as efficient solar steam generators

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Green Energy & Environment 2023年第1期8卷 151-162页

作者： Jiangjin Han Zhiyue Dong Liang Hao Jiang Gong Qiang Zhao Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective MaterialsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074China Hubei Collaborative Innovation Center for Advanced Chemical Materials Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical EngineeringHubei UniversityWuhan430062China

Graphene oxide(GO)is regarded as a promising candidate to construct solar absorbers for addressing freshwater crisis,but the easy delamination of GO in water poses a critical challenge for practical solar ***,we improve the stability of GO membranes by a self-crosslinking poly(ionic liquid)(PIL)in a mild condition,which crosslinks neighbouring GO nanosheets without blemishing the hydrophilic structure of *** further adding carbon nanotubes(CNTs),the sandwiched GO/CNT@PIL(GCP)membrane displays a good stability in pH=1 or 13 solution even for 270 *** molecular dynamics simulation results indicate that the generation of water nanofluidics in nanochannels of GO nanosheets remarkably reduces the water evaporation enthalpy in GCP membrane,compared to bulk ***,the GCP membrane exhibits a high evaporation rate(1.87 kg m^(-2)h^(-1))and displays stable evaporation rates for 14 h under 1 kW m^(-2)*** GCP membrane additionally works very well when using different water sources(e.g.,dye-polluted water)or even strong acidic solution(pH=1)or basic solution(pH=13).More importantly,through bundling pluralities of GCP membrane,an efficient solar desalination device is developed to produce drinkable water from *** average daily drinkable water amount in sunny day is 10.1 kg m^(-2),which meets with the daily drinkable water needs of five *** high evaporation rate,long-time durability and good scalability make the GCP membrane an outstanding candidate for practical solar seawater desalination.

关键词： Solar energy Graphene oxide Poly(ionic liquid)s Solar steam generation Wastewater treatment

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Au nanoclusters anchored on TiO_(2) nanosheets for high-efficiency electroreduction of nitrate to ammonia

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Nano Research 2024年第3期17卷 1209-1216页

作者： Miaosen Yang Tianran Wei Jia He Qian Liu Ligang Feng Hongyi Li Jun Luo Xijun Liu School of Chemical Engineering Northeast Electric Power UniversityJilin 132012China Nanchang Institute of Technology Nanchang 330044China State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830017China 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 MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Institute for New Energy Materials and Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Institute for Advanced Study Chengdu UniversityChengdu 610106China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Guangzhou Panyu Polytechnic Guangzhou 511483China ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaLonghua DistrictShenzhen 518110China

Electrocatalytic nitrate reduction reaction(NO_(3)RR)offers a unique rationale for green NH_(3) synthesis,yet the lack of high-efficiency NO_(3)RR catalysts remains a great *** this work,we show that Au nanoclusters anchored on TiO_(2) nanosheets can efficiently catalyze the conversion of NO_(3)RR-to-NH_(3) under ambient conditions,achieving a maximal Faradic efficiency of 91%,a peak yield rate of 1923μg·h^(-1)·mgcat.-1,and high durability over 10 consecutive cycles,all of which are comparable to the recently reported metrics(including transition metal and noble metal-based catalysts)and exceed those of pristine TiO_(2).Moreover,a galvanic Zn-nitrate battery using the catalyst as the cathode was proposed,which shows a power density of 3.62 mW·cm^(-2) and a yield rate of 452μg·h^(-1)·mgcat.-*** simulations further indicate that the atomically dispersed Au clusters can promote the adsorption and activation of NO_(3)-species,and reduce the NO_(3)RR-to-NH_(3) barrier,thus leading to an accelerated cathodic *** work highlights the importance of metal clusters for the NH_(3) electrosynthesis and nitrate removal.

关键词： NH3 electrosynthesis Zn-nitrate battery Au nanoclusters nitrate reduction reaction(NRR) TiO_(2)nanosheets

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Luminescent Cu doped CdTe nanocrystals via cation exchange of Cu7Te5 nanocubes: From undoped to doped emission

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Progress in Natural science:Materials International 2021年第3期31卷 398-403页

作者： Jiaojiao Zheng Bing Bai Qiumei Di Zhuoli Jiang Meng Xu Jiatao Zhang Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced Materials School of Materials Science & Engineering Beijing Institute of Technology School of Materials Science & Engineering Xi'an Polytechnic University

In II-VI group,the doping in CdTe nanocrystals（NCs） is more difficult than other *** this communication,CdTe nanocrystals containing Cu impurities were carefully synthesized based on controlled reverse cation exchange process between as-prepared Cu7Te5nanocubes and Cd2+*** well-defined Cu7Te5nanocubes,the obtained CdTe NCs kept the original *** concentration of Cu impurities in CdTe NCs was controlled by the regulation such reverse cation ***,the regulation from band gap（BG）photo luminescence（PL） to the coexistence of the bandgap emission,dopant emission,and surface-state emission was *** tailoring from undoped to doped emission in the case of Cu impurities is helpful to study the Cu related doping in telluride NCs.

关键词： Colloidal semiconductor nanocrystals Cation exchange Cu-related emission Photoluminescence regulation

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Detection of Oxygen Based on Host-Guest Doped Room-Temperature Phosphorescence Material

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有机化学 2024年第8期44卷 2523-2529页

作者： Zhang Wei Li Gengchen Su Hao Dai Wenbo Sun Peng Shi Jianbing Tong Bina Cai Zhengxu Dong Yuping Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081 Hefei National Laboratory University of Science and Technology of ChinaHefei 230088 College of Chemistry and Materials Engineering Wenzhou UniversityWenzhouZhejiang 325035 Key Lab of Biohealth Materials and Chemistry of Wenzhou Wenzhou UniversityWenzhouZhejiang 325035 Advanced Research Institute of Multidisciplinary Sciences Beijing Institute of TechnologyBeijing 100081

Quantitative oxygen detection,especially at low concentrations,holds significant importance in the realms of biology,complex environments,and chemical process *** to the high sensitivity and rapid response of the triplet excitons of phosphorescence to oxygen,pure organic room-temperature phosphorescence(RTP)materials have garnered widespread attention in recent years for oxygen ***,simultaneously achieving ultralong phosphorescence at room temperature and quantitative oxygen detection from pure organic host-guest doped materials poses *** d ensely packed materials may decrease non-radiative decay to increase the phosphorescence,but are unsuitable for oxygen diffusion in oxygen ***,the oxygen sensitivity of host-guest doped RTP materials using 4-bromo-N,N-bis(4-(tertbutyl)phenyl)aniline(TPABuBr)as the host and 6-bromo-2-butyl-1H-benzo[de]isoquinoline-1,3(2H)-dione(NIBr)as the guest was *** doped material exhibits fluorescence-phosphorescence dual-emission behavior at room *** tert-butyl groups in TPABuBr facilitate appropriate intermolecular spacing in the crystal state,enhancing oxygen ***,oxygen penetration can quench the phosphorescence *** observed linear relationship between the phosphorescence intensity of the doped material and the oxygen volume fraction conforms to the Stern-Volmer equation,suggesting its potential for quantitative analysis of oxygen *** calculated limit of detection is 0.015%(φ),enabling the analysis of oxygen with a volume fraction of less than 2.5%(φ).Moreover,the doped materials demonstrate rapid response and excellent photostability,indicating their potential utility as oxygen *** study elucidates the design and characteristics of NIBr/TPABuBr doped materials,highlighting their potential application in oxygen concentration detection and offering insights for the design of oxygen sensors.

关键词： organic room-temperature phosphorescence host-guest doped strategy oxygen sensitive materials oxygen concentration detection

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Au atoms doped in Ti_(3)C_(2)T_(x)MXene:Benefiting recovery of oxygen vacancies towards photocatalytic aerobic oxidation

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Nano Research 2022年第4期15卷 2862-2869页

作者： Kaifu Yu Sanmei Wang Qi Li Tingting Hou Yue Xin Rong He Wenhua Zhang Shuquan Liang Liangbing Wang Wenkun Zhu State Key Laboratory of Environment-friendly Energy Materials National Co-innovation Center for Nuclear Waste Disposal and Environmental SafetySchool of National Defence Science&TechnologySouthwest University of Science and TechnologyMianyang 621010China State Key Laboratory for Powder Metallurgy Key Laboratory of Electronic Packing and Advanced Functional Materials of Hunan ProvinceSchool of Materials Science and EngineeringCentral South UniversityChangsha 410083China Hefei National Laboratory for Physical Sciences at the Microscale Synergetic Innovation Centre of Quantum Information&Quantum PhysicsCAS Key Laboratory of Materials for Energy ConversionUniversity of Science and Technology of ChinaHefei 230026China

Photocatalytic aerobic oxidation by using oxygen molecules(O_(2))as green and low-cost oxidants is of great attraction,where the introduction of irradiation has been proved as an efficient strategy to lower reaction temperature as well as promote catalytic ***,the oxygen vacancies(OVs)of catalyst are highly active sites to adsorb and activate O_(2)during photocatalytic aerobic ***,OVs are easily blocked by oxygen atoms from active oxygen species during the catalytic process,leading to the deactivation of ***,a promising catalyst toward photocatalytic aerobic oxidation was successfully developed by recovering the OVs through doping Au atoms into Ti_(3)C_(2)T_(x)MXene(Au/Ti_(3)C_(2)T_(x)).Impressively,Au/Ti_(3)C_(2)T_(x)exhibited remarkable activity under full-spectrum irradiation towards photooxidation of methyl phenyl sulfide(MPS)and methylene blue(MB),attaining a conversion of>90%at room ***,Au/Ti_(3)C_(2)T_(x)also manifested remarkable stability by maintaining>95%initial activity after 10 successive reaction *** mechanistic studies indicated that the OVs of Au/Ti_(3)C_(2)T_(x)served as the active centers to efficiently adsorb and activate O_(2).More importantly,the doped Au atoms of Au/Ti_(3)C_(2)T_(x)were conducive to the recovery of OVs during photocatalytic process from the results of theoretical and experimental *** recovered OVs of Au/Ti_(3)C_(2)T_(x)continuously and efficiently activated O_(2),directly contributing to the remarkable catalytic activity and stability.

关键词： oxygen vacancies doped Au atoms Ti_(3)C_(2)T_(x)MXene photocatalysis aerobic oxidation

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Recent Developments of Antimony-Based Anodes for Sodiumand Potassium-Ion Batteries

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Transactions of Tianjin University 2022年第1期28卷 6-32页

作者： Bochao Chen Ming Liang Qingzhao Wu Shan Zhu Naiqin Zhao Chunnian He School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjin UniversityTianjin 300072China

The development of sodium-ion(SIBs)and potassium-ion batteries(PIBs)has increased rapidly because of the abundant resources and cost-effectiveness of Na and ***(Sb)plays an important role in SIBs and PIBs because of its high theoretical capacity,proper working voltage,and low ***,Sb-based anodes have the drawbacks of large volume changes and weak charge transfer during the charge and discharge processes,thus leading to poor cycling and rapid capacity *** address such drawbacks,many strategies and a variety of Sb-based materials have been developed in recent *** review systematically introduces the recent research progress of a variety of Sb-based anodes for SIBs and PIBs from the perspective of composition selection,preparation technologies,structural characteristics,and energy storage ***,corresponding examples are presented to illustrate the advantages or disadvantages of these ***,we summarize the challenges of the development of Sb-based materials for Na/K-ion batteries and propose potential research directions for their further development.

关键词： Sodium-ion batteries Potassium-ion batteries Sb-based materials Energy storage

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Controllably Growing Topologies in One-shot RAFT Polymerization via Macro-latent Monomer Strategy

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Chinese Journal of Polymer science 2021年第1期39卷 60-69,I0006页

作者： Liu-Qiao Zhang Yang Gao Zhi-Hao Huang Wei Zhang Nian-Chen Zhou Zheng-Biao Zhang Xiu-Lin Zhu State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Global Institute of Software Technology Suzhou 215163China

The controlled and efficient synthesis of polymers with tailored topologies is challenging but important for exploring structure/property research. Herein, we proposed a concept of macro-latent monomer to achieve the controlled growth of polymer *** macro-latent monomer was installed by a dynamic furan/maleimide covalent bond at the chain terminal. One-shot reversible additionfragmentation chain transfer(RAFT) polymerization of styrene and the macro-latent monomer created controlled growth of polymer *** temperature such as 40 ℃ could not activate the macro-latent monomer and thus the polymerization created the homo-polystyrene. By contrast, high temperature of ~110 ℃ activated the macro-latent monomer, and a maleimide-terminated macro-monomer was released via the retro-Diels Alder reaction. This macro-monomer immediately joined the cross polymerization with styrene and thus produced the side chains. By delicately manipulating the polymerization temperature, the predetermined placement of the macro-latent monomer-derived polymeric sidechains created controllably growing topologies, including star-, π-shaped, and density-variable grafting copolymers. This work paved a new way for creating on-demand topologies and would greatly enrich the topology synthesis.

关键词： Latent monomer Diels-Alder reaction Maleimide Styrene Topologies

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