我的前导师孙世刚教授终于修成正果：Science一篇

wamway

我校铂纳米晶体催化剂最新成果备受国际学界瞩目

近日，国际化学界再次将目光聚焦到我校。5月4日出版的美国《科学》杂志以长篇报告的形式发表了我校化学化工学院、固体表面物理化学国家重点实验室孙世刚教授等关于铂纳米催化剂的最新成果。同期杂志还配发了美国科罗拉多大学化学和生物化学系纳米材料专家丹 L. 费尔德门教授的题为“催化剂的新面孔”的评论，他指出，未来的能源安全很大程度上取决于化学家和材料科学家能够针鄂生产和应用替代燃料，发现更有效、更安全和更经济的催化剂。美国能源部将此确定为重大挑战，而深入认识催化剂结构和化学性能的关系，开发先进的纳米尺度材料合成技术是关键。他认为孙世刚等人的最新成果是纳米尺度催化剂合成的一个重大突破。

    论文发表后，在国际学术界迅速引起重大反响，美国《化学工程新闻》周刊、《每日科学》、英国的《新科学家》和英国皇家化学会的《化学世界》等国际主流科技媒体都在第一时间，分别以“多面体催化剂－铂多面体的催化性能胜过其球形表兄”，“铂纳米晶体提升了其在燃料氧化、氢能源中的催化活性”，“纳米晶体‘珍宝’是高性能化学催化剂”和“铂的多面”等为题，报道和评述了这项重要研究成果。我国科学网和《科学时报》在第一时间和头版头条发表了题为“科学家首次制备二十四面体铂纳米晶体：显著提高了铂纳米催化剂的活性和稳定性”的报道，5月9日的《科技日报》也在第一版显要位置刊发了消息。人民网等门户网站也做了报道。此外，一些重要学术机构，如美国科学促进会、美国材料研究学会、麻省理工学院和著名的国际催化剂制备公司以及中国科学院和国家自然科学基金委等的网站也在第一时间转载和评述了这项成果。

    孙世刚是1995年度国家杰出青年科学基金和2006年度国家级教学名师奖获得者。他在电化学和电催化研究所取得的原创性研究成果为国内外同行广泛认可。2007年，孙世刚当选国际电化学会特别会员。这项荣誉专门授予为电化学科学做出杰出贡献的科学家，至今全世界仅有24人获此称号，孙世刚是其中唯一的中国学者。

    （宣传部 王瑛慧）

厦门大学党委宣传部编辑

[ 本帖最后由 wamway 于 2007-5-13 23:15 编辑 ]

wamway

Copy from NatureChina: http://www.nature.com/nchina/2007/070523/full/nchina.2007.89.html.

Research Highlights

Subject Categories:
• Materials
• Chemistry

Published online: 23 May 2007 | doi:10.1038/nchina.2007.89

Nanocrystals: The more the better
Wei Zeng

Tetrahexahedral platinum nanocrystals can be synthesized using an electrochemical method

Original article citation
Tian, N., Zhou, Z. Y., Sun, S. G., Ding, Y. & Wang, Z. L. Synthesis of tetrahexahedral platinum nanocrystals with high-index facets and high electro-oxidation activity. Science 316, 732–735 (2007).
Introduction © (2007) AAAS

The catalytic performance of nanocrystals can be enhanced by increasing their number of facets (flat faces). It is, however, rather difficult to synthesize nanocrystals with many facets because of their high surface energy. Now, Shigang Sun, Zhonglin Wang and co-workers1 have produced tetrahexahedral (24 facets) platinum nanocrystals of high purity using an electrochemical method that has a high yield and is cost efficient.
Platinum nanospheres, 750 nm in size, are deposited onto a 'glassy carbon' electrode in a standard three-electrode cell. When a square-wave potential is applied to the glassy carbon, small tetrahexahedral nanocrystals begin to grow on the electrode surface at the expense of the larger nanospheres. By varying the operation conditions, nanocrystals with sizes from 20 nm to 240 nm were achieved.
Tetrahexahedral crystals occasionally exist in nature in fluorite and diamond, but very rarely in metals. The surfaces of these platinum nanocrystals are not only chemically and thermally stable (up to 800 ºC), but they also enhance catalytic activity for electro-oxidation of small organic fuels up to four times as much as bulk platinum. In addition, they can be used in a wide range of applications, including car converters and gas sensors.
The authors in this work are from:
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.

References

• Tian, N., Zhou, Z. Y., Sun, S. G., Ding, Y. & Wang, Z. L. Synthesis of tetrahexahedral platinum nanocrystals with high-index facets and high electro-oxidation activity. Science 316, 732–735 (2007).  | Article | PubMed | ChemPort |

[ 本帖最后由 wamway 于 2007-7-4 18:43 编辑 ]

wukai

不错,顶起来.

有段时间没来了,论坛办的相当不错

Thanks!

[ 本帖最后由 wamway 于 2007-7-4 18:38 编辑 ]

wamway

原帖由 pavis 于 2007-6-22 20:27 发表
这个领域容易出成果.纳米嘛
看看人家白边whiteside,一年NS没有5,6篇就算大旱

看了另外一个顶级纳米专家王中林的网页，science和nature文章共11篇，其文章引用率占整个佐治亚理工大学的38%，佐治亚理工大学在当年全美大学文章引用率第12名。

一般中国科学家只能叹为观止。

pavis

这个领域容易出成果.纳米嘛
看看人家白边whiteside,一年NS没有5,6篇就算大旱

wamway

本人的blog文章，欢迎评论

Prof.Sun: an excellent manager turning graphite to diamond，click to enter.

wamway

Science 同期登载纳米科学家Daniel L. Feldheim的评论文章，关于该工作的意义的。

Science 4 May 2007: Vol. 316. no. 5825, pp. 699 - 700 DOI: 10.1126/science.1143093

Prev | Table of Contents | Next

Perspectives

CHEMISTRY:
The New Face of Catalysis
Daniel L. Feldheim

Platinum nanocrystals with unusual shapes show unusually high catalytic activity, suggesting possible ways to enhance catalysis in other materials.

连接：http://www.sciencemag.org/cgi/content/summary/sci;316/5825/699

[ 本帖最后由 wamway 于 2007-6-15 00:03 编辑 ]

wamway

Science 4 May 2007: Vol. 316. no. 5825, pp. 732 - 735 DOI: 10.1126/science.1140484

Prev | Table of Contents | Next

ReportsSynthesis of Tetrahexahedral Platinum Nanocrystals with High-Index Facets and High Electro-Oxidation Activity
Na Tian,1 Zhi-You Zhou,1 Shi-Gang Sun,1* Yong Ding,2 Zhong Lin Wang2*

The shapes of noble metal nanocrystals (NCs) are usually defined by polyhedra that are enclosed by {111} and {100} facets, such as cubes, tetrahedra, and octahedra. Platinum NCs of unusual tetrahexahedral (THH) shape were prepared at high yield by an electrochemical treatment of Pt nanospheres supported on glassy carbon by a square-wave potential. The single-crystal THH NC is enclosed by 24 high-index facets such as {730}, {210}, and/or {520} surfaces that have a large density of atomic steps and dangling bonds. These high-energy surfaces are stable thermally (to 800°C) and chemically and exhibit much enhanced (up to 400%) catalytic activity for equivalent Pt surface areas for electro-oxidation of small organic fuels such as formic acid and ethanol. [size=-1]1 State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
2 School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332–0245, USA.

http://www.sciencemag.org/cgi/content/abstract/316/5825/732

[ 本帖最后由 wamway 于 2007-5-14 23:46 编辑 ]

paradoxfishbear

congratulation!

wamway

偶然看到这个大好消息，我的第一感觉是震惊：一个优秀的科研工作者和导师终于修成了正果！！！

在这之前，我正在准备写一篇介绍这位前导师的博客，名叫　Prof.Sun: a manager who turn graphite to diamond.(孙教授，一个点石成金的管理者)。

说实在的，众多的师兄弟姐妹都很优秀，但并非都是当时年级最优秀的，但在孙教授的指导下，我们基本都做出了同龄人中很值得骄傲的成果。该室几乎所有毕业生都能有机会到发达国家继续深造。

Prof.Sun: an excellent manager turning graphite to diamond，click to enter.

[ 本帖最后由 wamway 于 2007-6-15 00:19 编辑 ]