| 查看: 1890 | 回复: 20 | |||
| 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]
这几天在做氧化石墨烯的制备实验求助 已有4人参与
|
|||
我加了双氧水之后变成黄色，之后改怎么做呢。我看到有的文章上面说趁热过滤还有的是离心洗涤，问一下做过的大神该怎么做。 |
回复此楼» 猜你喜欢
【广州】仲恺农业工程学院城乡建设学院土木水利专业硕士招大量调剂，线上复试
已经有0人回复
-
【广州】仲恺农业工程学院城乡建设学院土木水利专业硕士招大量调剂，线上复试
已经有0人回复
-
建筑环境与结构工程论文润色/翻译怎么收费?
已经有269人回复
-
广西大学土木博士招生
已经有5人回复
-
E口2026重点国际合作项目
已经有2人回复
-
2027 博士自荐
已经有2人回复
-
学术人生就像一场马拉松，不松懈、不放弃！祝愿所有为学术梦想而打拼的人都能如愿！
已经有441人回复
-
哈尔滨工业大学博士申请考核制9月29日截止
已经有14人回复
-
哈尔滨工业大学博士申请考核制延长至10月7日截止
已经有0人回复
-
土木申博自荐
已经有2人回复
» 本主题相关商家推荐: (我也要在这里推广)
【答案】应助回帖
|
Preparation of Graphene Oxide and Its Exfoliated Suspension. A modified Hummers method was utilized to synthesize oxidized graphite powder (25). Typically, 2.5 g of natural graphite, 2.5 g of NaNO3, and 7.5 g of KMnO4 were slowly added to 50 mL of concentrated H2SO4 under vigorous stirring below 5 °C. Then the mixture was stirred continuously for 1 h at 35 °C to oxidize the graphite. After that, 100 mL water was added into the mixture, and the temperature was increased to higher than 90 °C, and the suspension was maintained at 95-100 °C for 15 min. Then, the mixture was poured into 300 mL of deionized water, after that 20 mL of H2O2 was added into the suspension. After cooling to room temperature, the solid products were filtered, subsequently washed with 5% HCl aqueous solution and water, and finally dried to obtain graphite oxide. The obtained graphite oxide was dispersed in DMF (1.0 mg·mL-1) by ultrasonication treatment by using an ultrasonication bath cleaner for 3 h. The resulting exfoliated GO suspension was centrifuged at 2000 rpm for 5 min to remove the unexfoliated graphite oxide particles. 希望能帮到你 |
19楼2016-01-07 11:30:38
2楼2015-12-29 23:00:17
chemistry婷
木虫 (著名写手)
- 应助: 8 (幼儿园)
- 金币: 7021
- 散金: 292
- 红花: 16
- 帖子: 1627
- 在线: 115.8小时
- 虫号: 2560470
- 注册: 2013-07-23
- 性别: MM
- 专业: 催化化学
3楼2015-12-29 23:10:51
chuhairong
木虫 (正式写手)
- 应助: 1 (幼儿园)
- 金币: 4868.3
- 散金: 10
- 帖子: 460
- 在线: 297小时
- 虫号: 1101712
- 注册: 2010-09-17
- 性别: GG
- 专业: 有机高分子材料
4楼2015-12-29 23:47:10
