| 查看: 409 | 回复: 1 | ||
| 【悬赏金币】回答本帖问题，作者1532174329将赠送您 20 个金币 | ||
1532174329新虫 (小有名气)
|
[求助]
这个合成步骤里的0.5 equiv volume of methanol的体积是相对什么来计算的？
|
|
|
是不是说假设有10 mL溶液，那么就要往里加5 mL甲醇？ Synthesis of the Au22(SG)18 Nanocluster The Au22(SG)18 nanocluster has been prepared via a modified protocol from Xie’s report. HAuCl4·3H2O (12.5 mM) (19) and glutathione (7.5 mM) were dissolved in 180 mL of H2O under vigorous stirring. The solution changed from light yellow to turbid white in 2 min. The pH of the reaction solution was then adjusted to 12 with an aqueous NaOH (1 M) solution and left a transparent solution. Afterward, the freshly prepared NaBH4 (100 mM, 6 mL) solution was added at once under 500 rpm stirring. The solution color changed gradually to orange red within 30 min. HCl (0.33 M) was used to adjust the solution to pH 2.5, and the stirring was kept at 500 rpm for 8 h. The solid crude product was obtained by adding 0.5 equiv volume of methanol and subsequent centrifuge precipitation at 8000 rpm for 10 min. The isolation of the Au22 nanocluster has been carried out by fractional precipitation from a saturated crude aqueous solution using methanol. The purity of the isolated sample has been confirmed by UV–vis and ESI–MS. |
回复此楼» 猜你喜欢
武汉纺织大学化工学院官方群-院士团队招生-学生自由度高-10余名学生赴985海外深造
已经有0人回复
-
南昌航空大学蒋华麟教授课题组招收化学、环境、碳达峰碳中和及相关专业硕士信息
已经有0人回复
-
金属材料论文润色/翻译怎么收费?
已经有117人回复
-
湖北师范大学复试调剂
已经有0人回复
-
武汉纺织大学_化工学院官方调剂群-院士团队招生-学生自由度高-每届发展好
已经有0人回复
-
河北大学无机化学专业招收调剂生
已经有0人回复
-
济南大学国家优青课题组 2026 调剂招生来啦
已经有0人回复
-
武汉纺织大学_化学院官方调剂群-院士团队招生-学生自由度高发展好-欢迎各位同学
已经有0人回复
-
河北大学 材料与化工 硕士招收调剂
已经有0人回复
1532174329
新虫 (小有名气)
 |
2楼2023-05-31 12:42:45
