| 查看: 2267 | 回复: 15 | ||||
| 当前主题已经存档。 | ||||
| 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 | ||||
refnew专家顾问 (知名作家)
|
[交流]
可控壁厚中空球
|
|||
|
One-Pot Synthesis of Uniform Cu2O and CuS Hollow Spheres and Their Optical Limiting Properties http://pubs.acs.org/cgi-bin/asap ... p/pdf/cm801407q.pdf Uniform hollow spheres of Cu2O and CuS were successfully synthesized by chemical transformation of in situ formed sacrificial templates containing Cu(I) in aqueous solutions. The shell thickness of these hollow spheres can be adjusted through the choice of the bromide source used for the formation of intermediate templates. Specifically, thick-shell hollow spheres (about 130−180 nm in shell thickness) were obtained by using CuBr solid spheres as the templates, which were formed by the reduction of CuBr2 with ascorbic acid; on the other hand, thin-shell hollow spheres (about 20−25 nm in shell thickness) were obtained by using spherical aggregates consisting of the Cu+, Br−, and (C4H9)4N+ ions as the templates, which were formed by the reduction of CuCl2 with ascorbic acid in the presence of (C4H9)4NBr. In both cases, crystalline Cu2O hollow spheres were directly obtained at room temperature, while amorphous Cu2S hollow spheres were first obtained at room temperature and transformed into well-crystallized CuS hollow spheres after a hydrothermal treatment at 160 °C. The optical limiting properties of the thin-shell hollow spheres of Cu2O and CuS were characterized by using nanosecond laser pulses. Strong optical limiting responses were detected for both the Cu2O and CuS hollow spheres, which make these semiconductor hollow spheres promising materials for applications in the protection of human eyes or optical sensors from high-power laser irradiation. |
回复此楼
13楼2008-11-21 20:43:02
家松钟
铁杆木虫 (小有名气)
木虫
- 应助: 0 (幼儿园)
- 金币: 6678.3
- 散金: 25
- 红花: 1
- 帖子: 201
- 在线: 87.9小时
- 虫号: 461521
- 注册: 2007-11-18
- 专业: 人工晶体
2楼2008-09-20 10:24:23
dyn4870
至尊木虫 (著名写手)
- 应助: 2 (幼儿园)
- 金币: 14942.3
- 散金: 176
- 红花: 2
- 帖子: 2967
- 在线: 164.3小时
- 虫号: 403786
- 注册: 2007-06-16
- 性别: GG
- 专业: 物理化学
，发给俺一份全文吧，多谢LZ！3楼2008-09-20 15:07:37
yhmi
铁杆木虫 (正式写手)
- 应助: 4 (幼儿园)
- 金币: 7051.1
- 红花: 1
- 帖子: 361
- 在线: 560.4小时
- 虫号: 362295
- 注册: 2007-05-05
- 性别: GG
- 专业: 半导体材料
4楼2008-09-23 16:02:54
