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2D Ti_(3)C_(2)T_(x)modified with nano-AgPNPs antioxidant constructed hierarchical interface for high-throughput oily wastewater separation

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Journal of materials science & technology 2024年第18期185卷 133-146页

作者： Qing-Ming Wang Xu-Han Chen Qiu-Feng Lü Qilang Lin college of materials science and engineering Fuzhou University2 Wulongjiang North AvenueFuzhou 350108China

Over-exploitation of fossil energy has led to the formation of enormous amounts of oily wastewater,which is increasingly polluting the environment of water *** Ti_(3)C_(2)T_(x)-modified separation ma-terial is limited by surface roughness and surface chemical composition,and the permeation flux de-creases significantly during continuous *** this study,silver-loaded polydopamine nanospheres(nano-AgPNPs)as antioxidants were prepared by in-situ reduction from Ag+ions and polydopamine nanospheres,and then they self-assembled with Ti_(3)C_(2)T_(x)nanosheets to obtain hierarchical micro-nano structural nano-AgPNPs modified Ti_(3)C_(2)T_(x)[(AgPNPs)_(x)T(x=0.25,0.5,0.75,and 1)].Because of their strong reduction properties,nano-AgPNPs antioxidants can effectively protect the active edges of Ti_(3)C_(2)T_(x)from dissolved oxygen,and greatly improve the oxidation resistance of Ti_(3)C_(2)T_(x)nanosheets,with no signif-icant changes in morphology and physical phase after long-term placement.(AgPNPs)_(x)T formed un-derwater oleophobic interfaces with the hierarchical structure on polyurethane(PU)sponge to prepare(AgPNPs)_(x)T@PU separation *** them,(AgPNPs)_(0.5)T@PU sponge showed the highest compre-hensive performance with separation efficiency higher than 99.6%for various oil-water mixtures,espe-cially high-throughput and permeation flux up to 247,787 L m^(-2)h^(-1)for cyclohexane-water *** addition,nano-AgPNPs greatly broadened the layer spacing of Ti_(3)C_(2)T_(x)and can form a functionalized in-terface of modified Ti_(3)C_(2)T_(x)on polyamide(PA)membrane and provide additional permeation channels,which enabled the(AgPNPs)_(0.5)T@PA membrane to have excellent toluene-water emulsion separation effi-ciency up to 99.6%.

关键词： Ti_(3)C_(2)T_(x) Nano-AgPNPs High-throughput Oily wastewater separation Oxidation resistance

Effects of Vibration Characteristics on the Atomization Performance in the Medical Piezoelectric Atomization Device Induced by Intra-Hole Fluctuation

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Chinese Journal of Mechanical engineering 2021年第6期34卷 331-339页

作者： Qiufeng Yan Wanting Sun Lei Zhang Hongmei Wang Jianhui Zhang School of Electrical engineering Nantong UniversityNantong226019China School of materials science and engineering Harbin Institute of TechnologyHarbin150001China college of Mechanical and Electrical engineering Guangzhou UniversityGuangzhou510006China

Oral inhalation of aerosolized drugs has be widely applied in healing the affected body organs including lesions of the throat and lungs and it is more effiicient than those conventional therapies,such as intravenous drip,intramuscular injection and external topical administration in the aspects of the dosage reduction and side effects of ***-theless,the traditional atomization devices always exhibit many *** example,non-uniformed atomization particle distribution,the instability of transient atomization quantity and difficulties in precise energy control would seriously restrict an extensive use of atomization inhalation *** this study,the principle of intra-hole fluctua-tion phenomenon occurred in the hole is fully explained,and the produced volume change is also ***-tionally,the mathematical expression of the atomization rate of the atomizing device is well *** mecha-nism of the micro-pump is further clarified,and the influence of the vibration characteristics of the atomizing film on the atomization behavior is analyzed *** curves of sweep frequency against the velocity and amplitude of the piezoelectric vibrator are obtained by the Doppler laser vibrometer,and the corresponding mode shapes of the resonance point are *** influence of vibration characteristics on atomization rate,atomization height and atomization particle size are also verified by experiments,*** the experimental results and theoretical calculation are expected to provide a guidance for the design of this kind of atomization device in the future.

关键词： Piezoelectric Intra-hole fluctuation Vibration characteristics Atomization

Hierarchical Stream Clustering Based NEWS Summarization System

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Computers, materials & Continua 2022年第1期70卷 1263-1280页

作者： M.Arun Manicka Raja S.Swamynathan Department of Computer science and engineering RMKCollege of Engineering and TechnologyChennai602106India Department of Information science and technology College of Engineering GuindyAnna UniversityChennai600025India

News feed is one of the potential information providing sources which give updates on various topics of different *** updates on various topics need to be collected since the domain specific interested users are in need of important updates in their domains with organized data from various *** this paper,the news summarization system is proposed for the news data streams from RSS feeds and Google *** news stream analysis requires live content,the news data are continuously collected for our *** contributions of thiswork involve domain corpus based news collection,news content extraction,hierarchical clustering of the news and summarization of *** of the existing news summarization systems lack in providing dynamic content with domain wise *** is alleviated in our proposed systemby tagging the news feed with domain corpuses and organizing the news streams with the hierarchical structure with topic wise ***,the news streams are summarized for the users with a novel summarization *** proposed summarization system generates topic wise summaries effectively for the user and no system in the literature has handled the news summarization by collecting the data dynamically and organizing the content *** proposed system is compared with existing systems and achieves better results in generating news *** Online news content editors are highly benefitted by this system for instantly getting the news summaries of their domain interest.

关键词： News feed content similarity parallel crawler collaborative filtering hierarchical clustering news summarization

Synthesis of well-defined Fe3O4 nanorods/N-doped graphene for lithium-ion batteries

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Nano Research 2016年第5期9卷 1256-1266页

作者： Jiqing Jiao Wenda Qiu Jianguo Tang Liuping Chen Laiying Jing college of materials science and engineering National Base of International S. & T. Cooperation on Hybrid Materials and Growing Base for State Key Laboratory Qingdao University 308 Ningxia Road Qingdao 26607 I China KLGHEI of Environment and Energy Chemistry School of Chemistry and Chemical Engineering Sun Yat-sen University Guangzhou 510275 China

The geometric size and distribution of magnetic nanoparticles are critical to the morphology of graphene （GN） nanocomposites, and thus they can affect the capacity and cycling performance when these composites are used as anode materials in lithium-ion batteries （LiBs）. In this work, Fe304 nanorods were deposited onto fully extended nitrogen-doped GN sheets from a binary precursor in two steps, a hydrothermal process and an annealing process. This route effectively tuned the Fe3O4 nanorod size distribution and prevented their aggregation. The transformation of the binary precursor was characterized by X-ray diffraction （XRD）, Fourier transform infrared （FTIR） spectroscopy, X-ray photoelectron spectroscopy （XPS）, thermogravimetric analysis （TGA）, and transmission electron microscopy （TEM）. XPS analysis indicated the presence of N-doped GN sheets, and that the magnetic nanocrystals were anchored and uniformly distributed on the surface of the flattened N-doped GN sheets. As a high performance anode material, the structure was beneficial for electron transport and exchange, resulting in a large reversible capacity of 929 mA·h·g^-1, high-rate capability, improved cycling stability, and higher electrical conductivity. Not only does the result provide a strategy for extending GN composites for use as LiB anode materials, but it also offers a route for the preparation of other oxide nanorods from binary precursors.

关键词： graphene Fe3O4 N-doped anode materials lithium-ion batteries

Facile fabrication of highly durable superhydrophobic strain sensors for subtle human motion detection

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Journal of materials science & technology 2022年第15期110卷 35-42页

作者： Li-Chuan Jia Chang-Ge Zhou Kun Dai Ding-Xiang Yan Zhong-Ming Li college of Electrical engineering Sichuan UniversityChengdu 610065China college of Polymer science and engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China college of materials science and engineering The Key Laboratory of Material Processing and Mold of Ministry of EducationZhengzhou UniversityZhengzhou 450001China School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065China

Endowing strain sensors with superhydrophobicity is of great importance to guarantee their long-term service under harsh environments(such as wet,acid,alkali and salt atmospheres),whereas,the development of superhydrophobic strain sensors remains a great ***,we realized a superhydrophobic and highly sensitive sensor for subtle human motion detection by designing a superhydrophobic and electrically conductive coating on cotton textile,via a facile drop-coating *** resultant strain sensor showed a large water contact angle of 161.3°and a low sliding angle of 3.8°The superhydrophobic characteristics can keep almost unchanged even after undergoing 1000 peeling cycles,1000 stretchingrelease cycles,and 1000 bending-releasing cycles,revealing its excellent mechanical *** sensitivity with the maximum gage factor of 169 was achieved for the strain sensor under a small strain of0–10%,and the sensing performance also showed well ***,our sensor can effectively detect various subtle human physiological signals and body motions even under harsh *** admirable features make the sensor promising applications in wearable electronics,personalized health monitoring,sound recognition,and so on.

关键词： Strain sensors Superhydrophobicity High sensitivity Drop coating Durable

Recent progresses on alloy-based anodes for potassium-ion batteries

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Rare Metals 2020年第9期39卷 989-1004页

作者： Kai-Xiang Lei Jing Wang Cong Chen Si-Yuan Li Shi-Wen Wang Shi-Jian Zheng Fu-Jun Li Tianjin Key Laboratory of materials Laminating Fabrication and Interface Control technology School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China Henan Provincial Key Laboratory of Surface and Interface science College of Materials and Chemical EngineeringZhengzhou University of Light IndustryZhengzhou 450001China Key Laboratory of Advanced Energy materials Chemistry(Ministry of Education) Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China

Potassium-ion batteries(KIBs)are one of the most promising large-scale electric energy storage systems due to the high abundance and low redox potential of *** the key component,anode determines their energy density and ***-based anodes,such as P,Sn,Sb,and Bi,have attracted extensive attention due to their abundant resources,suitable working potentials,and large theoretical ***,the dramatic volume variation upon(de)potassiation results in pulverization of particles and their detaching from the current collector accompanied with performance *** strategies,including designing micro-/nanostructures,introducing carbon substrates,and optimizing electrode/electrolyte interface,have been demonstrated to effectively alleviate these ***,we summarize the recent research progresses on alloy-based materials in *** synthesis methods,electrochemical performance,reaction mechanisms,and structure-activity relationships of these materials are considered,and challenges and perspectives are *** review provides new insight into designing of high-activity electrode materials for KIBs and beyond.

关键词： Potassium-ion batteries Alloys Reaction mechanism (De)potassiation Electrochemical performance

Hydration Characteristics and Humidity Control Performance of Calcium Silicate Board Prepared from Mine Tailing and Diatomite

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Journal of Wuhan university of technology(materials science) 2020年第1期35卷 147-154页

作者：战佳宇 YANG Feihua LI Wanmin LIU Xiao WANG Linjun FANG Guiming State Key Laboratory of Solid Waste Reuse for Building materials Beijing Building Materials Academy of Science ResearchBeijing 100041China college of materials science and engineering Beijing University of TechnologyBeijing 100124China Hebei Ruisuo Research Institute of Solid Waste engineering technology Chengde 067000China

The feasibility of utilizing molybdenum tailing and diatomite as siliceous materials to prepare calcium silicate board was *** influences of molybdenum tailing/diatomite proportion on hydration characteristics,thermal conductivity,water absorption,flexural strength and moisture adsorption-desorption property of calcium silicate board were investigated in *** experimental results reveal that molybdenum tailing is environmentally friendly to prepare building *** main hydration products in calcium silicate board under autoclaved condition are C-S-H with low crystallinity and *** tailing is favorable to the formation of *** flexural strength and bulk density of the calcium silicate board gradually increase when the content of molybdenum tailing *** C-S-H is formed with the increase of diatomite content during autoclaved curing process,resulting in the enhancement of moisture adsorptiondesorption performance and the reduction of thermal *** optimal content of molybdenum tailing is 20%,furthermore,the flexual strength and thermal conductivity of calcium silicate board at this content meet the Chinese standard JC/T564.1-2008.

关键词： calcium silicate board molybdenum tailing diatomite hydration humidity control performance

Cooperative Chloride Hydrogel Electrolytes Enabling Ultralow-Temperature Aqueous Zinc Ion Batteries by the Hofmeister Effect

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Nano-Micro Letters 2022年第6期14卷 219-233页

作者： Changyuan Yan Yangyang Wang Xianyu Deng Yonghang Xu Shenzhen Key Laboratory of Advanced materials School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055People’s Republic of China School of materials science and Hydrogen Energy Foshan UniversityFoshan 528000China

Aqueous zinc ion batteries have high potential applicability for energy storage due to their reliable safety,environmental friendliness,and low ***,the freezing of aqueous electrolytes limits the normal operation of batteries at low ***,a series of high-performance and low-cost chloride hydrogel electrolytes with high concentrations and low freezing points are *** electrochemical windows of the chloride hydrogel electrolytes are enlarged by>1 V under cryogenic conditions due to the obvious evolution of hydrogen bonds,which highly facilitates the operation of electrolytes at ultralow temperatures,as evidenced by the low-temperature Raman spectroscopy and linear scanning *** on the Hofmeister effect,the hydrogen-bond network of the cooperative chloride hydrogel electrolyte comprising 3 M ZnCl_(2)and 6 M LiCl can be strongly interrupted,thus exhibiting a sufficient ionic conductivity of 1.14 mS cm;and a low activation energy of 0.21 e V at-50℃.This superior electrolyte endows a polyaniline/Zn battery with a remarkable discharge specific capacity of 96.5 mAh g;at-50℃,while the capacity retention remains~100%after 2000 *** results will broaden the basic understanding of chloride hydrogel electrolytes and provide new insights into the development of ultralow-temperature aqueous batteries.

关键词： Chloride hydrogel Electrochemical window Cooperative effect Hydrogen-bond Ultralow temperature Aqueous zinc ion battery

Unimolecular Self-Assembled Hemicyanine-Oleic Acid Conjugate Acts as a Novel Succinate Dehydrogenase Inhibitor to Amplify Photodynamic Therapy and Eliminate Cancer Stem Cells

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Research 2024年第2期6卷 449-461页

作者： Qiang Wang Tian Yang Shiyou Li Chen Xu Chong Wang Yuxuan Xiong Xing Wang Jiangling Wan Xiangliang Yang Zifu Li National engineering Research Center for Nanomedicine College of Life Science and Technology.Huazhong University of Science and TechnologyWuhan 430074P.R.China Key Laboratory of Molecular Biophysics of Ministry of Education College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074P.R.China .3Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medical Huazhong University of Science and TechnologyWuhan 430074P.R.China Hubei engineering Research Center for Biomaterials and Medical Protective materials Huazhong University of Science and TechnologyWuhan 430074P.R.China Hubei Bioinformatics and Molecular Imaging Key Laboratory College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074P.R.China

Photodynamic therapy with reactive oxygen species production is a prospective treatment to combat cancer stem cells(CSCs).However,the innate drawbacks,including short lifetime and diffusion distance of reactive oxygen species and hypoxia within solid tumors,have become bottlenecks for clinical applications of photodynamic ***,we develop a mitochondria-targeting hemicyanine-oleic acid conjugate(CyOA),which can self-assemble into supramolecular nanoparticles(NPs)without any exogenous *** is also shown for targeting the mitochondrial complex II protein succinate dehydrogenase to inhibit oxidative phosphorylation and reverse tumor hypoxia,resulting in 50.4-fold higher phototoxicity against breast cancer stem cells(BCSCs)compared to SO_(3)-CyOA NPs that cannot target to *** 4T1 and BCSC tumor models,CyOA NPs achieve higher tumor inhibition and less lung metastasis nodules compared to the clinically used photosensitizer *** study develops a self-assembled small molecule that can serve as both oxidative phosphorylation inhibitor and photosensitizer for eradication of CSCs and treatment of solid tumors.

关键词： cyanine oxidative treatment