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metal-organic-framework-derived formation of Co–N-doped carbon materials for efficient oxygen reduction reaction

Journal of Energy Chemistry 2020年第1期29卷 137-143,I0005页

作者： Hao Tian Chi Zhang Panpan Su Zhangfeng Shen Hao Liu Guoxiu Wang Shaomin Liu Jian Liu State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Department of Chemical Engineering Curtin UniversityPerthWA 6845Australia Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyBroadwaySydneyNSW 2007Australia Joint International Laboratory on Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China DICP-Surrey Joint Centre for Future Materials Department of Chemical and Process Engineeringand Advanced Technology InstituteUniversity of SurreyGuilfordSurrey GU27XHUK State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023 LiaoningChina

Non-precious metal nitrogen-doped carbonaceous materials have attracted tremendous attention in the field of electrochemical energy storage and ***,we report the designed synthesis of a novel series of Co-N-C nanocomposites and their evaluation of electrochemical *** yolkshell structured Co nanoparticles@polymer materials are fabricated from the facile coating polymer strategy on the surface of *** calcination in nitrogen atmosphere,the Co–N–C nanocomposites in which cobalt metal nanoparticles are embedded in the highly porous and graphitic carbon matrix are successfully *** cobalt nanoparticles containing cobalt metal crystallites with an oxidized shell and/or smaller(or amorphous)cobalt-oxide deposits appear on the surface of graphitic *** prepared Co–N–C nanoparticles showed favorable electrocatalytic activity for oxygen reduction reactions,which is attributed to its high graphitic degree,large surface area and the large amount existence of Co–N active sites.

关键词： metal-organic-framework Resin polymer Oxygen reduction reaction Electrocatalysts

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Two-dimensional metal-organic-framework as a unique theranostic nano-platform for nuclear imaging and chemo-photodynamic cancer therapy

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Nano Research 2019年第6期12卷 1307-1312页

作者： Wenjun Zhu Yu Yang Qiutong Jin Yu Chao Longlong Tian Jingjing Liu Ziliang Dong Zhuang Liu Institute of Functional Nano & Soft Materials(FUNSOM) Collaborative Innovation Center of Suzhou Nano Science and TechnologyJiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow UniversitySuzhou 215123China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoAvenida da UniversidadTaipaMacao 31608China

Nanoscale metal organic frameworks (NMOFs) with porous structure and inherent biodegradability are attractive nanomedicine *** addition to conventional particulate NMOFs,two-dimensional (2D) NMOFs are emerging as a unique type of NMOFs which however have been relatively less explored for nanomedicine ***,2D NMOFs composed of Zn2+ and tetrakis(4-carboxyphenyl) porphyrin (TCPP) are fabricated and functionalized with polyethylene glycol (PEG).Compared to their particulate counterpart,such 2D NMOFs show greatly increased drug loading capacity and enhanced light-triggered singlet oxygen production,promising for chemotherapy and photodynamic therapy (PDT),*** the porphyrin structure of TCPP,our 2D NMOFs could be labeled with a diagnostic radioisotope,99mTc,for single photon emission computer tomography (SPECT) imaging,which reveals efficient tumor homing of those 2D NMOFs upon intravenous *** offering a remarkable synergistic in vivo antitumor effect for the combined chemo-PDT,such 2D NMOFs show efficient biodegradation and rapid renal *** work presents the great promise of 2D NMOFs for nanomedicine applications.

关键词： nanoscale metal-organic-framework two-dimensional nanosheets drug delivery photodynamic therapy combination therapy

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Augmenting Intrinsic Fenton-Like Activities of MOF-Derived Catalysts via N-Molecule-Assisted Self-catalyzed Carbonization

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Nano-Micro Letters 2019年第4期11卷 536-548页

作者： Chengdong Yang Mi Zhou Chao He Yun Gao Shuang Li Xin Fan Yi Lin Fei Cheng Puxin Zhu Chong Cheng Textile Institute College of Biomass Science and EngineeringSichuan UniversityChengdu 610065People’s Republic of China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065People’s Republic of China Functional Materials Department of ChemistryTechnische University BerlinHardenbergstraβe 4010623 BerlinGermany Department of Chemistry and Biochemistry Freie Universitat BerlinTakustrasse 314195 BerlinGermany

To overcome the ever-growing organic pollutions in the water system,abundant efforts have been dedicated to fabricating efficient Fenton-like carbon ***,the rational design of carbon catalysts with high intrinsic activity remains a long-term ***,we report a new N-molecule-assisted self-catalytic carbonization process in augmenting the intrinsic Fenton-like activity of metal-organic-framework-derived carbon *** carbonization,the N-molecules provide alkane/ammonia gases and the formed iron nanocrystals act as the in situ catalysts,which result in the elaborated formation of carbon nanotubes(in situ chemical vapor deposition from alkane/iron catalysts)and micro-/meso-porous structures(ammonia gas etching).The obtained catalysts exhibited with abundant Fe/Fe-Nx/pyridinic-N active species,micro-/meso-porous structures,and conductive carbon ***,the catalysts exhibit high efficiency toward the degradation of different organic pollutions,such as bisphenol A,methylene blue,and *** study not only creates a new pathway for achieving highly active Fenton-like carbon catalysts but also takes a step toward the customized production of advanced carbon hybrids for diverse energy and environmental applications.

关键词： Carbon catalysts metal-organic-framework Self-catalytic carbonization Fenton-like reactions organic pollutions

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Non-cytotoxic nanoparticles re-educating macrophages achieving both innate and adaptive immune responses for tumor therapy

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Asian Journal of Pharmaceutical Sciences 2022年第4期17卷 557-570页

作者： Shengmei Wang Xuanjun Liu Minghua Yang Linqi Ouyang Jinsong Ding Shengfeng Wang Wenhu Zhou Department of Pharmacy The Third Xiangya HospitalCentral South UniversityChangshaHunan410013China Xiangya School of Pharmaceutical Sciences Central South UniversityChangshaHunan410013China Postdoctoral Research Station of Clinical Medicine and Department of Pediatrics The Third Xiangya HospitalCentral South UniversityChangshaHunan410013China The First Hospital of Hunan University of Chinese Medicine ChangshaHunan410007China

Macrophages are important antigen-presenting cells to combat tumor via both innate and adaptive immunity,while they are programmed toM2 phenotype in established tumors and instead promote cancer development and ***,we develop a nanomedicine that can re-educate M2 polarized macrophages to restore their anti-tumor *** nanomedicine has a core-shell structure to co-load IPI549,a PI3Kγinhibitor,and CpG,a Toll-like receptor 9 ***,the hydrophobic IPI549 is self-assembled into a pure drug nano-core,while MOF shell layer is coated for CpG encapsulation,achieving extra-high total drugs loading of 44%.Such nanosystem could facilitate intracellular delivery of the payloads but without any cytotoxicity,displaying excellent *** entering macrophages,the released IPI549 and CpG exert a synergistic effect to switch macrophages from M2 to M1 phenotype,which enables anti-tumor activities via directly engulfing tumor cells or excreting tumor killing ***,tumor antigens released from the dying tumor cells could be effectively presented by the re-educated macrophages owing to the up-regulation of various antigen presenting mediators,resulting in infiltration and activation of cytotoxic T *** a result,the nanosystem triggers a robust antitumor immune response in combination with PD-L1 antibody to inhibit tumor growth and *** work provides a non-cytotoxic nanomedicine to modulate tumor immune microenvironment by reprograming macrophages.

关键词： Core-shell nanoparticles metal-organic-framework CpG IPI549 Tumor immunotherapy

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