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| 1 | 二维材料Ti_(3)C_(2)T_(x)的制备与优化显示文摘近年来,二维材料因其独特的结构和性质在储能、催化、电磁屏蔽等领域备受关注,其中二维过渡金属碳化物、氮化物、碳氮化物(MXene)引起了广泛关注。为了探索其更理想的制备工艺,对MXene材料(Ti_(3)C_(2)T_(x))的制备进行了工艺优化。对比了不同HF酸浓度(20%、30%和40%)、刻蚀时间(3、5和8h)以及不同前驱体质量(0.5、1.0和1.5g)下所得到刻蚀产物的微观形貌和XRD图谱。结果发现,在室温下用10mL、30%的HF酸刻蚀1g的Ti_(3)AlC_(2)5h即可得到类似于手风琴状的二维材料MXene。优化后的刻蚀产物分层明显,几乎不存在粘连现象,而且刻蚀产物的Al含量极低,几乎没有副产物产生。 | 张志远 刘金玉 孙志浩 温玉清 尚伟 | 2023 | 特种铸造及有色合金2023，43，7： | 0 |
| 2 | Highly Aligned Ternary Nanofiber Matrices Loaded with MXene Expedite Regeneration of Volumetric Muscle Loss显示文摘Current therapeutic approaches for volumetric muscle loss(VML)face challenges due to limited graft availability and insufficient bioactivities.To overcome these limitations,tissue-engineered scaffolds have emerged as a promising alternative.In this study,we developed aligned ternary nanofibrous matrices comprised of poly(lactide-co-ε-caprolactone)integrated with collagen and Ti_(3)C_(2)T_(x)MXene nanoparticles(NPs)(PCM matrices),and explored their myogenic potential for skeletal muscle tissue regeneration.The PCM matrices demonstrated favorable physicochemical properties,including structural uniformity,alignment,microporosity,and hydrophilicity.In vitro assays revealed that the PCM matrices promoted cellular behaviors and myogenic differentiation of C2C12 myoblasts.Moreover,in vivo experiments demonstrated enhanced muscle remodeling and recovery in mice treated with PCM matrices following VML injury.Mechanistic insights from next-generation sequencing revealed that MXene NPs facilitated protein and ion availability within PCM matrices,leading to elevated intracellular Ca^(2+)levels in myoblasts through the activation of inducible nitric oxide synthase(i NOS)and serum/glucocorticoid regulated kinase 1(SGK1),ultimately promoting myogenic differentiation via the m TOR-AKT pathway.Additionally,upregulated i NOS and increased NO–contributed to myoblast proliferation and fiber fusion,thereby facilitating overall myoblast maturation.These findings underscore the potential of MXene NPs loaded within highly aligned matrices as therapeutic agents to promote skeletal muscle tissue recovery. | Moon Sung Kang Yeuni Yu Rowoon Park Hye Jin Heo Seok Hyun Lee Suck Won Hong Yun Hak Kim Dong‑Wook Han | 2024 | Nano-Micro Letters2024，16，4： | 0 |
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