| 查看: 2109 | 回复: 5 | |||
| 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 | |||
[求助]
Improved Synthesis of Graphene Oxide制备氧化石墨烯，急求 已有1人参与
|
|||
|
Sample Text 有没有人用Improved Synthesis of Graphene Oxide做过实验啊，需不需要用冰浴加料啊，急急急！万分感谢！ For the improved method, a 9:1 mixture of concentrated H2SO4/H3PO4 (360:40 mL) was added to a mixture of graphite flakes (3.0 g, 1 wt equiv) and KMnO4 (18.0 g, 6 wt equiv), producing a slight exotherm to 35_40 °C. The reaction was then heated to 50 °C and stirred for 12 h. The reaction was cooled to rt and poured onto ice (_400 mL) with 30% H2O2 (3 mL). For workup, the mixture was sifted through a metal U.S. Standard testing sieve (W.S. Tyler, 300 _m) and then filtered through polyester fiber (Carpenter Co.) The filtrate was centrifuged (4000 rpm for 4 h), and the supernatant was decanted away. The remaining solid material was then washed in succession with 200 mL of water, 200 mL of 30% HCl, and 200 mL of ethanol (2_); for each wash, the mixture was sifted through the U.S. Standard testing sieve and then filtered through polyester fiber with the filtrate being centrifuged (4000 rpm for 4 h) and the supernatant decanted away. The material remaining after this extended, multiple-wash process was coagulated with 200 mL of ether, and the resulting suspension was filtered over a PTFE membrane with a 0.45 _m pore size. The solid obtained on the filter was vacuum-dried overnight at room temperature, obtaining 5.8 g of product. |
回复此楼» 猜你喜欢
金属材料论文润色/翻译怎么收费?
已经有286人回复
» 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:
- Improved Synthesis of Graphene Oxide这篇文章中
已经有3人回复
- Materials Today最新石墨烯综述——Graphene: synthesis and applications
已经有508人回复
- Improved Synthesis of Graphene Oxide这篇文献中，的一个小问题
已经有36人回复
- 求助为什么我的氧化石墨烯不是金黄色？
已经有34人回复
- 一些关于Graphene,GO,CNTs的文献
已经有86人回复
- 如何用膨胀石墨制备氧化石墨烯或石墨烯呢？
已经有8人回复
- 请教氧化石墨烯（Graphene oxide） 和氧化石墨（Graphite oxide）的区别
已经有74人回复
- 氧化石墨烯干燥之后大家都是怎么弄成粉末的?
已经有23人回复
- reduced graphene oxide 是不是就是石磨烯
已经有6人回复
- 【讨论】单层氧化石墨即氧化石墨烯（graphene oxide)XRD
已经有5人回复
xiejf
专家顾问 (文学泰斗)
麦麦爸爸爱小牛
-
专家经验: +509 - MN-EPI: 109
- 应助: 2943 (讲师)
- 贵宾: 2.534
- 金币: 110359
- 散金: 58010
- 红花: 693
- 沙发: 2
- 帖子: 84789
- 在线: 3388.2小时
- 虫号: 1003879
- 注册: 2010-04-23
- 性别: GG
- 专业: 固体无机化学
- 管辖: 复合材料
4楼2012-09-19 09:03:07
xiejf
专家顾问 (文学泰斗)
麦麦爸爸爱小牛
-
专家经验: +509 - MN-EPI: 109
- 应助: 2943 (讲师)
- 贵宾: 2.534
- 金币: 110359
- 散金: 58010
- 红花: 693
- 沙发: 2
- 帖子: 84789
- 在线: 3388.2小时
- 虫号: 1003879
- 注册: 2010-04-23
- 性别: GG
- 专业: 固体无机化学
- 管辖: 复合材料
2楼2012-09-18 20:42:56
3楼2012-09-19 08:23:33
5楼2012-10-16 16:06:58
28