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Biocompatibility of boron nitride nanosheets

Nano Research 2018年第1期11卷 334-342页

作者： srikanth mateti Cynthia S. Wong Zhen Liu Wenrong Yang Yuncang Li Lu Hua Li Ying Chen Institute for Frontier Materials Deakin University Waurn Ponds Victoria 3216 Australia Centre for Chemistry and Biotechnology School of Life and Environmental Sciences Deakin University Waurn Ponds Victoria 3216 Australia School of Engineering RMIT University Melbourne Victoria 300 I Australia

The properties and applications of boron nitride （BN） nanosheets are com- plementary to those of graphene, with advantages in chemical and thermal stability. Biocompatibility is an important property for future biomedical applications but has not been investigated experimentally. We studied the biocompatibility of BN nanosheets of different sizes and compared it with that of BN nanoparticles in osteoblast-like cells （SaOS2）. Our results showed that the biocompatibility of BN nanomaterials depends on their size, shape, structure, and surface chemical properties. Electron spin resonance measurement revealed that unsaturated B atoms located at the nanosheet edges or on the particle surface are responsible for the cell death.

关键词： boron nitride nanosheet biocompatibility

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A Thermoregulatory Flexible Phase Change Nonwoven for All‑Season High‑Efficiency Wearable Thermal Management

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Nano-Micro Letters 2023年第2期15卷 259-270页

作者： Hanqing Liu Feng Zhou Xiaoyu Shi Keyan Sun Yan Kou Pratteek Das Yangeng Li Xinyu Zhang srikanth mateti Ying Chen Zhong‑Shuai Wu Quan Shi Liaoning Province Key Laboratory of Thermochemistry for Energy and Materials Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023People’s Republic of China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023People’s Republic of China Institute for Frontier Materials Deakin UniversityWaurn PondsVIC 3216Australia University of Chinese Academy of Sciences 19 A Yuquan RoadShijingshan DistrictBeijing 100049People’s Republic of China

Phase change materials have a key role for wearable thermal management,but suffer from poor water vapor permeability,low enthalpy value and weak shape stability caused by liquid phase leakage and intrinsic rigidity of solid–liquid phase change ***,we report for the first time a versatile strategy for designed assembly of high-enthalpy flexible phase change nonwovens(GB-PCN)by wet-spinning hybrid grapheneboron nitride(GB)fiber and subsequent impregnating paraffins(e.g.,eicosane,octadecane).As a result,our GB-PCN exhibited an unprecedented enthalpy value of 206.0 J g^(−1),excellent thermal reliability and anti-leakage capacity,superb thermal cycling ability of 97.6%after 1000 cycles,and ultrahigh water vapor permeability(close to the cotton),outperforming the reported PCM films and fibers to ***,the wearable thermal management systems based on GB-PCN for both clothing and face mask were demonstrated,which can maintain the human body at a comfortable temperature range for a significantly long ***,our results demonstrate huge potential of GB-PCN for human-wearable passive thermal management in real scenarios.

关键词： Phase change materials Graphene Boron nitride Nonwoven Wearable thermal management

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Self-assembled V2O5 interconnected microspheres produced in a fish-water electrolyte medium as a high- performance lithium-ion-battery cathode

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Nano Research 2015年第11期8卷 3591-3603页

作者： Md Mokhlesur Rahman Abu Z. Sadek Irin Sultana mateti srikanth Xiujuan J. Dai Matthew R. Field Dougal G. McCulloch Sri Balaji Ponraj Ying Chen Institute for Frontier Materials Deakin University Waurn Ponds VIC 3216 Australia Melbourne Centre for Nanofabrication 151 Wellington Rd Clayton VIC 3168 Australia School of Applied Sciences Applied Physics RMIT University Melbourne VIC 3001 Australia

Interconnected microspheres of V2Os composed of ultra-long nanobelts are synthesized in an environmental friendly way by adopting a conventional anodization process combined with annealing. The synthesis process is simple and low-cost because it does not require any additional chemicals or reagents. Commercial fish-water is used as an electrolyte medium to anodize vanadium foil for the first time. Electron microscopy investigation reveals that each belt consists of numerous nanofibers with free space between them. Therefore, this novel nanostructure demonstrates many outstanding features during electrochemical operation. This structure prevents self-aggregation of active materials and fully utilizes the advantage of active materials by maintaining a large effective contact area between active materials, conductive additives, and electrolyte, which is a key challenge for most nanomaterials. The electrodes exhibit promising electrochemical performance with a stable discharge capacity of 227 mAh·g^-1 at 1C after 200 cycles. The rate capability of the electrode is outstanding, and the obtained capacity is as high as 278 at 0.5C, 259 at 1C, 240 at 2C, 206 at 5C, and 166 mAh·g^-1 at 10C. Overall this novel structure could be one of the most favorable nanostructures of vanadium oxide-based cathodes for Li-ion batteries.

关键词： self-assembly interconnected microspheres fish-water electrolyte V2O5 cathode lithium-ion batteries

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