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Inhaled curcumin Mesoporous polydopamine nanoparticles against radiation pneumonitis

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Acta Pharmaceutica Sinica B 2022年第5期12卷 2522-2532页

作者： Ting Chen Bo Zhuang Yueqi Huang Yan Liu Bochuan Yuan Wanmei Wang Tianyu Yuan Lina Du Yiguang Jin Guangdong Pharmaceutical University Guangzhou 510006China Department of Pharmaceutical Sciences Beijing Institute of Radiation MedicineBeijing 100850China Department of Chemical Defense Institute of NBC DefenseBeijing 102205China

Radiation therapy is an effective method to kill cancer cells and shrink tumors using highenergy X-ray or γ-ray. Radiation pneumonitis(RP) is one of the most serious complications of radiation therapy for thoracic cancers, commonly leading to serious respiratory distress and poor prognosis. Here,we prepared curcumin-loaded Mesoporous polydopamine nanoparticles(CMPN) for prevention and treatment of RP by pulmonary delivery. Mesoporous polydopamine nanoparticles(MPDA) were successfully synthesized with an emulsion-induced interface polymerization method and curcumin was loaded in MPDA via π-π stacking and hydrogen bonding interaction. MPDA owned the uniform spherical morphology with numerous mesopores that disappeared after loading curcumin. More than 80% curcumin released from CMPN in 6 h and mesopores recovered. CMPN remarkably protected BEAS-2 B cells from γ-ray radiation injury by inhibiting apoptosis. RP rat models were established after a single dose of15 Gy^(60)Co γ-ray radiation was performed on the chest area. Effective therapy of RP was achieved by intratracheal administration of CMPN due to free radical scavenging and anti-oxidation ability, and reduced proinflammatory cytokines, high superoxide dismutase, decreased malondialdehyde, and alleviated lung tissue damages were observed. Inhaled CMPN paves a new avenue for the treatment of RP.

关键词： Radiation pneumonitis Curcumin Mesoporous Polydopamine Nanoparticle Pulmonary delivery Inhalation Free radical scavenging

Conducting polymer-functionalized Mesoporous metal-organic frameworks for high-performance Li-S battery

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Nano Research 2023年第4期16卷 4867-4873页

作者： Xiao-Fei Liu Ya-Rui Wang Hong Chen Bo Li Shuang-Quan Zang Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001China Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province College of Chemistry and Pharmacy EngineeringNanyang Normal UniversityNanyang 473061China

It was known that Mesoporous metal-organic frameworks(MOFs)with hierarchical pores and unsaturated metal sites can effectively inhibit the shuttle effect of lithium polysulfides in lithium-sulfur battery,however,the unsatisfactory structural stability and electrical conductivity limit the application of Mesoporous MOFs(MMOFs)in Li-S batteries.Aiming at sensible solutions,the conductive polyaniline(PANI)was incorporated into the MMOF to enhance the discharge capacity and the cycling stability of proposed Li-S batteries,as the stability and the conductivity of the MMOF cathode was improved simultaneously.The activated MMOF-PANI provides physical and chemical adsorption of polysulfides against their shuttle effect.Moreover,the introduction of PANI into the channels of MMOF effectively improves the conductivity of MMOF,thus improving the electrochemical performance of the MMOF-PANI-based batteries.Benefiting from these synergetic effects,the S@MMOF-PANI cathode delivers improved electrochemical performance including excellent rate performance and cycling stability.The battery shows an initial capacity of 777.7 mAh·g^(−1)at 2.0 C and a low decay rate of 0.06%per cycle in 1,000 cycles and approximately a repeatable rate performance.

关键词： metal-organic framework conductivity Mesoporous shuttle effect Li-S battery

Dual-template synthesis of defect-rich Mesoporous Co_(3)O_(4) for low temperature CO oxidation

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Chinese Chemical Letters 2023年第7期34卷 368-372页

作者： Shuhua Song Jian Liang Wei Xiao Dong Gu The Institute for Advanced Studies Wuhan UniversityWuhan 430072China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China

CO oxidation is a benchmark in heterogeneous catalysis for evaluation of redox catalysts due to its practical relevance in many applications and the fundamental problems associated with its very high activity at low temperatures.Among which,Co_(3)O_(4) is one of the most active non-precious metal catalysts.Exposed crystal planes and cobalt sites are considered to be important for its high catalytic activity.Herein,we demonstrate an enhanced CO oxidation activity by a defect-rich Mesoporous Co_(3)O_(4) that prepared by a designed dual-template method.Two different kinds of silicas are used as hard-templates at the same time,resulting in a defect-rich Mesoporous Co_(3)O_(4) with a surface area as high as 169 m^(2)/g.This catalyst exhibited a very high catalytic activity for low temperature CO oxidation with a light-off temperature at -73℃ under the space velocity of 80,000 mL h^(-1)g^(-1)_(cat).Further studies reveal that the high surface area promotes the lattice oxygen mobility,surface rich of Co^(2+)species and active oxygen species are crucial for the high catalytic activity.Moreover,the dual-template approach paves a way towards the design and construction of high-surface-area Mesoporous metal oxides for various applications.

关键词： Mesoporous Dual-template Co_(3)O_(4) CO oxidation Defect

Enhanced photocatalytic degradation of organic dyes from aqueous environment using neodymium-doped Mesoporous layered double hydroxide

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Journal of Rare Earths 2022年第10期40卷 1554-1563页

作者： Ajaz Ahmad Wani Amjad Mumtaz Khan Yahiya Kadaf Manea Mansour A.S.Salem Department of Chemistry Aligarh Muslim UniversityAMUAligarh202002India

Neodymium-doped Zn-Al layered double hydroxide(Nd/Zn-Al LDH) with excellent photocatalytic activity was prepared by a one-step hydrothermal method. The morphology and physicochemical properties of as-synthesized photocatalysts were well analyzed by Fourier transform infrared(FT-IR), X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), photoluminescence(PL), UV-diffuse reflectance spectroscopy(UV-DRS), and Brunauer-Emmett-Teller(BET)surface analysis. Doping Nd^(3+) into Zn-Al LDH enhances the overall catalytic activity of the nanocomposite, like better electron-hole pair separation, increase in interplanar distance, fast electron transfer, and large surface area. The as-prepared nanocomposite shows excellent degradation of three different dyes under visible light irradiation. The degradation efficiency of these dyes follows the order of Congo red > rose Bengal > fast green. Furthermore, liquid chromatography-mass spectrometry(LC-MS)was employed to propose a possible photocatalytic degradation pathway for Congo Red and Rose Bengal dyes by Nd/Zn-Al LDH. With the help of radical trapping experiments, it is revealed that during the photoexcitation process, the primary reactive intermediates are hydroxyl radicals.

关键词： Organic pollutants Degradation Multifunctional Mesoporous LC-MS Rare earths

基于介孔氮掺杂氧缺陷型三氧化二铁正极的新型高性能可充放碱性锌电池

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Science China Materials 2022年第4期65卷 920-928页

作者：滕春霖张传奇尹克书赵梦晓杜叶双吴奇卢锡洪 Hubei Key Laboratory of Pollutant Analysis&Reuse Technology College of Chemistry and Chemical EngineeringHubei Normal UniversityHuangshi435002China The Key Lab of Low-carbon Chem&Energy Conservation of Guangdong Province MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen UniversityGuangzhou510275China Shenzhen Institute of Advanced Electronic Materials Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China

高效、环保、廉价的正极材料被认为是可充电碱性锌电池(RAZBs)的核心要素.据此,本工作开发出一种具有三维有序介孔结构、丰富氮掺杂和氧缺陷的三氧化二铁纳米材料(N-Fe_(2)O_(3)−x).该材料作为一种新型碱性锌电池的正极材料,表现出优异... 详细信息

高效、环保、廉价的正极材料被认为是可充电碱性锌电池(RAZBs)的核心要素.据此,本工作开发出一种具有三维有序介孔结构、丰富氮掺杂和氧缺陷的三氧化二铁纳米材料(N-Fe_(2)O_(3)−x).该材料作为一种新型碱性锌电池的正极材料,表现出优异的性能.N-Fe_(2)O_(3)−x纳米材料采用独特的高等静压纳米铸造工艺和N_(2)等离子体活化方法制备,该材料具有高有效面积、丰富的活性位点、快速的电解质扩散通道和短电荷传输途径.以优化后的N-Fe_(2)O_(3)−x材料为正极,金属锌为负极制备的N-Fe_(2)O_(3)−x//Zn碱性锌电池具有高的容量(288 mA h g^(−1))和能量密度(135 W h kg^(−1),基于活性物质N-Fe_(2)O_(3)−x的重量计算).此外,该可充电锌电池具有良好的稳定性,在10 A g^(−1)电流密度下,1000次循环后仍有73%的电容保持率.该N-Fe_(2)O_(3)−x//Zn电池的电化学性能远远高于目前其他铁基锌电池.本工作首次利用三氧化二铁作为正极材料应用于可充电碱性锌电池的研究,其优良特性将吸引更多研究者的兴趣.

关键词： zinc battery oxygen-deficient Fe_(2)O_(3) Mesoporous nitrogen doping

Microemulsion Synthesis of Mesoporous β-tricalcium Phosphate Powder with a Novel System

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Journal of Wuhan University of Technology(Materials Science) 2022年第4期37卷 773-778页

作者： BIELEC Monikaq 黄岸 XIA Yuhao 戴红莲 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyShenzhen 5180ooChina Shenzhen Institute of Wuhan University of Technology Wuhan 430070China

The synthesis of Mesoporous β-tricalcium phosphate(β-TCP)powder was performed by using the microemulsion approach,with hexadecyltrimethyl ammonium bromide(CTAB)/cyclohexane/n-octyl alcohol microemulsion system.The influences of different pH values and calcination temperatures on the phase composition of the β-TCP powder were studied.The in vitro proliferation of bone marrow mesenchymal stem cells(BMSCs)in the suspensions of β-TCP powders with meso-structure was studied.The phase composition,Mesoporous structure,powder morphology,cell morphology and the optical density(OD)were characterized through X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),Fourier transform infrared(FTIR)spectroscopy,Nadsorption-desorption isotherms,inverted phase contrast microscopy and Multiskan spectrum,respectively.The Mesoporous β-TCP powder with specific surface area of 12.85 m^(2)/g and the average pore size 7.11 nm was obtained through the microemulsion approach(100 g/L CTAB/250 mL/L cyclohexane/250 mL/L n-octyl alcohol)with a controlled pH of 7.0,after calcinating the powder at 800℃.It was confirmed that Mesoporous β-TCP powder benefits the activity of BMSCs more than the non-Mesoporous β-TCP powder.

关键词： β-tricalcium phosphate Mesoporous microemulsion bone marrow mesenchymal stem cells

Design,Synthesis,and Applications of Mesoporous Covalent Organic Frameworks

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CCS Chemistry 2024年第1期6卷 57-68页

作者： Niyati Arora Cassandra Flores Milinda C.Senarathna Christina M.Thompson Ronald A.Smaldone Department of Chemistry and Biochemistry University of TexasDallasRichardsonTexas 75080

Covalent organic frameworks(COFs)are highly ordered and permanently porous organic polymers that can be classified as two-dimensional or threedimensional.Their tunable design and crystalline order endow a range of pore sizes,shapes,functions,and applications that differentiate them from other polymers.The COF pore sizes and shapes rely on the geometry of the monomers and dynamic covalent chemistry,while the stacking of the sheets relies on noncovalent interactions.Their tunability allows for post-modification or the incorporation of additional functional groups for the reinforcement by various noncovalent interactions.The limits of Mesoporous COFs are still being investigated,with the design rules continuing to evolve.Here we report a comprehensive review of Mesoporous COFs,explore strategies for large pore reinforcement,highlight structural design and features,elucidate their various functions and applications,discuss fundamental challenges faced that need to be addressed,and predict future directions.

关键词： covalent organic frameworks Mesoporous supramolecular chemistry polymers pore size

Stabilization of nanoscale zero-valent iron in water with Mesoporous carbon(n ZVI@MC)

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Journal of Environmental Sciences 2019年第7期31卷 28-33页

作者： Junming Shi Jing Wang Wei Wang Wei Teng Wei-xian Zhang State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongji University School of Chemical Science and Engineering Tongji University

Two challenges persist in the applications of nanoscale zero-valent iron(nZVI) for environmental remediation and waste treatment: limited mobility due to rapid aggregation and short lifespan in water due to quick oxidation. Herein, we report the nZVI incorporated into Mesoporous carbon(MC) to enhance stability in aqueous solution and mobility in porous media. Meanwhile, the reactivity of nZVI is preserved thanks to high temperature treatment and confinement of carbon framework. Small-sized(～16 nm) nZVI nanoparticles are uniformly dispersed in the whole carbon frameworks. Importantly, the nanoparticles are partially trapped across the carbon walls with a portion exposed to the mesopore channels. This unique structure not only is conductive to hold the nZVI tightly to avoid aggregation during mobility but also provides accessible active sites for reactivity. This new type of nanomaterial contains ～10 wt% of iron. The nZVI@MC possesses a high surface area(～ 500 m^2/g) and uniform mesopores(～ 4.2 nm) for efficient pollutant diffusion and reactions. Also, high porosity of nZVI@MC contributes to the stability and mobility of nZVI. Laboratory column experiments further demonstrate that nZVI@MC suspension(～4 g Fe/L) can pass through sand columns much more efficiently than bare nZVI while the high reactivity of nZVI@MC is confirmed from reactions with Ni(II). It exhibits remarkably better performance in nickel(20 mg/L) extraction than Mesoporous carbon, with 88.0% and 33.0%uptake in 5 min, respectively.

关键词： Mesoporous carbon Nanoscale zero-valent iron Mobility Porous media Heavy metal removal

Mesoporous Ternary Nitrides of Earth?Abundant Metals as Oxygen Evolution Electrocatalyst

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Nano-Micro Letters 2020年第6期12卷 190-202页

作者： Ali Saad Hangjia Shen Zhixing Cheng Ramis Arbi Beibei Guo Lok Shu Hui Kunyu Liang Siqi Liu John Paul Attfield Ayse Turak Jiacheng Wang Minghui Yang Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201Zhejiang ProvincePeople’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Department of Engineering Physics McMaster UniversityHamilton L8S 4L7Canada State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of Sciences1295 Dingxi RoadShanghai 200050People’s Republic of China Centre for Science at Extreme Conditions and EaStCHEM School of Chemistry University of EdinburghKings BuildingsWest Mains RoadEdinburgh EH93JJUK

As sustainable energy becomes a major concern for modern society,renewable and clean energy systems need highly active,stable,and low-cost catalysts for the oxygen evolution reaction(OER).Mesoporous materials offer an attractive route for generating efficient electrocatalysts with high mass transport capabilities.Herein,we report an efficient hard templating pathway to design and synthesize three-dimensional(3-D)Mesoporous ternary nickel iron nitride(Ni3FeN).The as-synthesized electrocatalyst shows good OER performance in an alkaline solution with low overpotential(259 mV)and a small Tafel slope(54 mV dec?1),giving superior performance to IrO2 and RuO2 catalysts.The highly active contact area,the hierarchical porosity,and the synergistic effect of bimetal atoms contributed to the improved electrocatalytic performance toward OER.In a practical rechargeable Zn–air battery,Mesoporous Ni3FeN is also shown to deliver a lower charging voltage and longer lifetime than RuO2.This work opens up a new promising approach to synthesize active OER electrocatalysts for energy-related devices.

关键词： Ordered Mesoporous structure Hard template Ni3FeN Oxygen evolution reaction Zn–air battery