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Vacancy manipulating of molybdenum carbide MXenes to enhance Faraday reaction for high performance lithium-ion batteries

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Nano Research Energy 2022年第3期1卷 18-26页

作者： Xin Guo Changda Wang Wenjie Wang Quan Zhou Wenjie Xu Pengjun Zhang Shiqiang Wei Yuyang Cao Kefu Zhu Zhanfeng Liu Xiya Yang Yixiu Wang Xiaojun Wu Li Song Shuangming Chen Xiaosong Liu national Synchrotron Radiation laboratory CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230029China School of Chemistry and Material Sciences University of Science and Technology of ChinaHefei 230029China

“Intrinsic”strategies for manipulating the local electronic structure and coordination environment of defect-regulated materials can optimize electrochemical storage ***,the structure–activity relationship between defects and charge storage is ambiguous,which may be revealed by constructing highly ordered vacancy ***,we demonstrate molybdenum carbide MXene nanosheets with customized in-plane chemical ordered vacancies(Mo_(1.33)CT_(x)),by utilizing selective etching ***-based X-ray characterizations reveal that Mo atoms in Mo1.33CTx show increased average valence of+4.44 compared with the control Mo_(2)CT_(x).Benefited from the introduced atomic active sites and high valence of Mo,Mo_(1.33)CT_(x)achieves an outstanding capacity of 603 mAh·g^(−1)at 0.2 A·g^(−1),superior to most original ***+storage kinetics analysis and density functional theory(DFT)simulations show that this optimized performance ensues from the more charge compensation during charge–discharge process,which enhances Faraday reaction compared with pure Mo_(2)CT_(x).This vacancy manipulation provides an efficient way to realize MXene’s potential as promising electrodes.

关键词： ordered vacancies MXenes X-ray absorption fine structure(XAFS) lithium-ion storage mechanism

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具有NIR-Ⅱ吸收的碳包覆磁铁矿纳米团簇用于成像引导的光热-化学动力学协同治疗

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Science China Materials 2023年第6期66卷 2492-2503页

作者：林叶丰周可张少波卢益君何媛刘宏基孟祥福钱勇汪星宇石心怡林文楚钱俊超王辉 High Magnetic Field laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China hefei Cancer Hospital Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China School of Basic Medicine Anhui Medical UniversityHefei 230032China

化学动力学疗法(CDT)是基于磁铁矿纳米酶治疗癌症的新兴治疗方式.但是,它的低催化能力和单模治疗限制了其治疗功效.本工作中,我们开发了一种在第二近红外(NIR-Ⅱ)窗口中具有高吸光度的碳涂覆的磁铁矿纳米团簇(CCMNCs),用于NIR-Ⅱ光热增... 详细信息

化学动力学疗法(CDT)是基于磁铁矿纳米酶治疗癌症的新兴治疗方式.但是,它的低催化能力和单模治疗限制了其治疗功效.本工作中,我们开发了一种在第二近红外(NIR-Ⅱ)窗口中具有高吸光度的碳涂覆的磁铁矿纳米团簇(CCMNCs),用于NIR-Ⅱ光热增强的化学动力抗癌疗法.这种尺寸约58 nm的CCMNCs通过使用二茂铁作为单一前体的一步溶剂热法合成.CCMNCs不仅用作肿瘤靶向磁共振成像的造影剂,而且还吸收并将NIR-Ⅱ辐射转化为局部热量,用于高温杀死癌细胞.CCMNCs在酸溶液中产生的亚铁离子和铁离子催化Fenton反应生成CDT的羟基自由基(·OH),并减少作为自由基清除剂的细胞内谷胱甘肽.本文报道的CCMNCs通过组合的化学动力学光热处理的协同效应显示出优异的治疗功效.

关键词：化学动力学磁共振成像治疗功效自由基清除剂 Fenton反应协同治疗造影剂酸溶液

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Current status and hurdles for CAR-T cell immune therapy

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Blood Science 2019年第2期1卷 148-155页

作者： Ruocong Zhao Yuanbin Cui Shanglin Li Le Qin Peng Li Key laboratory of Regenerative Biology South China Institute for Stem Cell Biology and Regenerative MedicineGuangzhou Institutes of Biomedicine and HealthChinese Academy of SciencesGuangzhouChina

Chimeric antigen receptor T(CAR-T)cells have emerged as novel and promising immune therapies for the treatment of multiple types of cancer in patients with hematological *** are several key components critical for development and application of CAR-T ***,the design of CAR vectors can considerably affect several aspects of the physiological functions of these T ***,despite the wide use of g-retrovirus and lentivirus in mediating gene transfer into T cells,optimal CAR delivery systems are also being developed and *** addition,several classes of mouse models have been used to evaluate the efficacies of CART cells;however,each model has its own ***,although surprising complete remission(CR)rates were observed in acute lymphoblastic leukemia(ALL),lymphoma,and multiple myeloma(MM),there is still a lack of specific targets for acute myeloid leukemia(AML).Leukemia relapse remains a major challenge,and its mechanism is presently under *** release syndrome(CRS)and neurotoxicity are life-threatening adverse effects that need to be carefully *** factors that compromise the activities of anti-solid cancer CAR-T cells have been recognized,and further improvements targeting these factors are the focus of the development of novel CAR-T *** the current hurdles will lead to optimal responses of CAR-T cells,thus paving the way for their wide clinical application.

关键词： Cancer Chimeric antigen receptor T cells Immune therapy

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