当前位置:首页>南京>南京大学物理学院高力波、袁国文团队与合作者发现石墨烯的“波纹”竟能室温下抓住“高冷”的惰性气体

南京大学物理学院高力波、袁国文团队与合作者发现石墨烯的“波纹”竟能室温下抓住“高冷”的惰性气体

  • 2026-03-17 19:37:05
南京大学物理学院高力波、袁国文团队与合作者发现石墨烯的“波纹”竟能室温下抓住“高冷”的惰性气体

近日,南京大学物理学院高力波、袁国文团队联合李绍春教授,东南大学巨明刚教授,中国科学院大学周武教授等合作者,在室温常压条件下实现了惰性气体在石墨烯表面的稳定吸附。

你有没有想过,像氙气、氩气这样“高冷”的稀有气体,竟然能在常温常压下稳稳地“粘”在材料表面,甚至排列成整齐的晶体结构?这听起来像是天方夜谭,却在我国科学家手中成为现实。

稀有气体因其最外层电子结构稳定,化学性质极不活泼,被称为惰性气体。要想让它们在常温、常压下稳定地吸附在固体材料表面,难上加难。过去,科学家们只能在接近绝对零度(-273 °C)的极低温条件,才能短暂地“抓住”它们,一旦温度回升,这些气体原子便会迅速逃逸。

南京大学高力波、袁国文团队与合作者揭示了一种由层状材料自身“波纹”主导的全新吸附机制——“波纹辅助吸附”,在室温常压下实现了惰性气体在石墨烯表面的稳定吸附,突破了传统物理吸附与化学吸附的二元认知,为气体储存、分离与催化等领域开启了新的可能性。

或许你想象中的石墨烯是一张完美平坦的“原子平面”,但现实中,自由状态的石墨烯更像一张微微起伏的薄纱,其表面存在着天然的原子级波纹(ripple),这些波纹可视为一种结构上的“第四维度”。研究团队发现,正是这些曾被忽视的纳米波纹,成为了“捕捉”惰性气体的关键。理论计算表明,当石墨烯的波纹起伏增大时,其局部曲率会显著增强。这种几何形变,增强了惰性气体原子与碳原子之间的相互作用,从而将气体原子稳稳“吸住”。研究团队将这种全新吸附机制命名为——“波纹辅助吸附”。

吸附在石墨烯的惰性气体分子晶体

团队利用扫描隧道显微镜对吸附氙原子的石墨烯进行表征,首次直接观察到氙原子在石墨烯表面排列成密堆积晶体结构,相邻原子间距约6.8 Å,且与石墨烯的晶格方向保持一致。氩原子和氦原子则形成周期性排列的二聚体结构。这种吸附过程是高度可逆的。当温度升至约300 °C时,气体完全脱附,而石墨烯晶格结构完好如初,展现出优异的循环稳定性。

二维材料吸附惰性气体后的物理性质变化

研究进一步发现,“波纹辅助吸附”机制不仅适用于石墨烯,也成功拓展至二硫化钼、二硒化铌和单壁碳纳米管等多种层状材料。吸附气体后,这些材料的电学传输、超导特性、光致发光等物理性质发生显著变化,且在气体脱附后完全恢复,展现出优异的可控性与可逆性。

相关研究成果以“Ripple-assisted adsorption of noble gases on graphene at room temperature”为题,发表在《国家自然评论》(National Science Review, 13, nwaf506, 2026)期刊上。南京大学博士生刘伟林、黄贤雷、窦立国,东南大学博士生方强龙,中国科学院大学博士生李昂为论文的共同第一作者。南京大学袁国文副教授、中国科学院大学周武教授、东南大学巨明刚教授、南京大学李绍春教授、南京大学高力波教授为论文共同通讯作者。中国科学院金属研究所成会明院士、刘畅研究员、侯鹏翔研究员,东南大学王金兰教授等给与了大力帮助。该工作依托南京大学物理学院、固体微结构物理全国重点实验室、人工微结构科学与技术协同创新等平台,获得国家自然科学基金、江苏省自然科学基金、国家重点研发计划、小米基金等多个项目支持。

论文链接

https://doi.org/10.1093/nsr/nwaf506

声明:本文仅供科研分享,如有侵权,请联系作者删除

本文转载自:

https://www.nju.edu.cn/info/1067/461951.htm

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  1. CONNECT:[ UseTime:0.000501s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000980s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000310s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000311s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000490s ]
  6. SELECT * FROM `set` [ RunTime:0.000232s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000566s ]
  8. SELECT * FROM `article` WHERE `id` = 503586 LIMIT 1 [ RunTime:0.000365s ]
  9. UPDATE `article` SET `lasttime` = 1775532397 WHERE `id` = 503586 [ RunTime:0.024000s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000262s ]
  11. SELECT * FROM `article` WHERE `id` < 503586 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000910s ]
  12. SELECT * FROM `article` WHERE `id` > 503586 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000533s ]
  13. SELECT * FROM `article` WHERE `id` < 503586 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000811s ]
  14. SELECT * FROM `article` WHERE `id` < 503586 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000845s ]
  15. SELECT * FROM `article` WHERE `id` < 503586 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000760s ]
0.100621s