24小时热门版块排行榜    

查看: 3693  |  回复: 50
【奖励】 本帖被评价41次,作者csumseczh增加金币 32.2 个
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

csumseczh

铜虫 (小有名气)


[资源] 0.6-5nm尺度晶态-非晶态转变: 一篇被“Science editor's choice”选中的JACS 文章

刚刚在Science Editor's Choice上看到的一篇JACS 文章,传统的议题,但是新颖的角度。链接: http://www.sciencemag.org/content/341/6146/593.3.full

该文章以0.6 nm - 5 nm尺度范围内的Pt纳米粒子为模型,使用high resolution TEM (HRTEM), X-ray absorption fine-structure spectroscopy(XAFS), 和first principle calculation来表征该Pt纳米粒子的非晶态-晶态转变随尺度的关系,同时使用了H2 和Pt接触这种模型来模拟催化过程中Pt粒子的状态变化。该文章刚发表在JACS上,just accepted,但已被Science editor choice选中。 Science editor choice中的描述见下文。在本帖子的附件中可以同时下载JACS上的原文。

EDITORS' CHOICE
MATERIALS SCIENCE
Nanoparticle Transformers
Marc S. Lavine
On the nanometer scale, small metal nanoparticles behave neither like atoms nor a bulk material, and hence their properties can be tuned by changing the sizes of the particles, which makes them of broad research interest. When used for catalytic purposes, they are often placed onto a supporting substrate, and both it and the presence of absorbed atoms may further alter the nanoparticle properties. Li et al. studied the structure of platinum nanoparticles in the size range of 0.6 to 5 nm by using a combination of transmission electron microscopy, x-ray absorption fine-structure spectroscopy, and first-principles calculations. In studying over 3000 nanoparticles, they were able to distinguish between noncrystalline and crystalline ones. They found that there was not a single size that marked the transition between the two. Rather, the transition was a statistical one, with the potential for both ordered and disordered particles of a certain size to coexist. The coexistence size region was found to be dependent on the nature of the substrate and the amount of H2 adsorbed. The authors believe that this effect is general for late 5d transition metals.

J. Am. Chem. Soc. 10.1021/ja405497p (2013).

想不到做表征能做得这么牛, 不知道是不是大牛灌水的,欢迎各位说说自己的看法。
回复此楼

» 本帖附件资源列表

» 收录本帖的淘帖专辑推荐

Nano&Micro 万卷阁之搜神记 电化学电源、电源管理 我喜欢的论文

» 猜你喜欢

» 本主题相关商家推荐: (我也要在这里推广)

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

彩虹89

新虫 (正式写手)


0.6nm啊  tem做得到吗?
25楼2013-08-12 09:05:31
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 51 个回答
简单回复
wjy20112楼
2013-08-10 09:22   回复  
一般  顶一下,感谢分享!
wjy20113楼
2013-08-10 09:30   回复  
顶一下,感谢分享!
zjys58874楼
2013-08-10 09:41   回复  
五星好评  顶一下,感谢分享!
ykbenku5楼
2013-08-10 10:29   回复  
五星好评  顶一下,感谢分享!
yuan9996楼
2013-08-10 14:34   回复  
五星好评  顶一下,感谢分享!
hfqk7楼
2013-08-10 14:42   回复  
五星好评  顶一下,感谢分享!
dlchenzzu8楼
2013-08-10 17:21   回复  
五星好评  顶一下,感谢分享!
2013-08-10 18:51   回复  
五星好评  顶一下,感谢分享!
ziki10楼
2013-08-10 19:48   回复  
五星好评  顶一下,感谢分享!
焊工11楼
2013-08-10 19:49   回复  
三星好评  顶一下,感谢分享!
whit13楼
2013-08-11 00:37   回复  
五星好评  顶一下,感谢分享!
avad14楼
2013-08-11 07:39   回复  
五星好评  顶一下,感谢分享!
☆ 无星级 ★ 一星级 ★★★ 三星级 ★★★★★ 五星级
普通表情 龙 兔 虎 猫 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[职场人生] 40+中年人失业后,还能找到好工作吗? +10 xqy2009 2026-10-13 12/600 2026-10-15 19:24 by lpwang
[基金申请] 申请科研项目纯靠实力能成功吗? 200+7 David1982 2026-10-13 11/550 2026-10-15 10:30 by zyqchem
[硕博家园] 极限拉扯,如何抉择 +11 Isak0320 2026-10-12 15/750 2026-10-14 21:55 by 猫鱼不是鱼
[论文投稿] 二审4个多月了还是Awaiting Reviewer Scores 10+3 纳斯达克ML 2026-10-11 4/200 2026-10-14 17:30 by babero
[有机交流] OpenAI又攻克数学难题了,离AI做有机合成还有多远? +8 wangyl_123 2026-10-10 13/650 2026-10-14 15:12 by zuesli
[教师之家] 课题组会帮你通过考核么? +4 好运来~9527 2026-10-10 7/350 2026-10-13 08:41 by xli1984
[公派出国] 售一区SCI文章T0P,我:8O.551.O54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 9/450 2026-10-11 22:34 by XQNyDCa1Tk5n
[公派出国] 售SCI一区文章,我:8O5.5.1.O5.4,科目全,可伽急 +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 22:26 by XQNyDCa1Tk5n
[找工作] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 22:26 by XQNyDCa1Tk5n
[考博] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 9/450 2026-10-11 22:15 by XQNyDCa1Tk5n
[考博] 售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急 +3 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 22:11 by XQNyDCa1Tk5n
[教师之家] 售SCI文章,我:8O5.5.1.O.54,科目齐全,可+急 (EPI+-1)(金币-50) +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 22:06 by XQNyDCa1Tk5n
[教师之家] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 (EPI+-1)(金币-50) +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 14:25 by VOMexwnDzOFZ
[教师之家] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 (EPI+-1)(金币-50) +4 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 14:05 by VOMexwnDzOFZ
[考研] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 13:51 by VOMexwnDzOFZ
[硕博家园] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 13:45 by VOMexwnDzOFZ
[找工作] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +3 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 10:54 by VOMexwnDzOFZ
[找工作] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +4 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 10:34 by VOMexwnDzOFZ
[考博] 招收博士生一名 +3 mandolin 2026-10-10 3/150 2026-10-11 10:21 by 不是山谷!
[公派出国] 售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急 +4 qR2AdCWTVtkw 2026-10-09 4/200 2026-10-11 03:14 by M0zrYVSAnxpE
信息提示
请填处理意见