24小时热门版块排行榜    

CyRhmU.jpeg
查看: 2754  |  回复: 13
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

于哈哈

铁杆木虫 (正式写手)

[求助] 制备的金纳米棒如何确定浓度?

按照文献 制备金纳米棒:Chem. Mater. 2005, 17, 4636-4641
步骤如下:Gold Nanorod Synthesis. Gold nanorods were prepared exactly
as described by Sau et al.,33 but scaled up to increase the quantity.
Gold seed particles were prepared by adding 250 íL of 10 mM
HAuCl4a3H2O to 7.5 mL of 100 mM cetyltrimethylammonium
bromide (CTAB) with brief, gentle mixing. Next, 600 íL of freshly
prepared, ice-cold 10 mM NaBH4 solution was added followed by
mixing for 2 min. The pale brown seed solution was stable and
usable for several days. The nanorod growth solution was prepared
by adding the following reagents to a plastic tube in the following
order and then gently mixing: 40 mL of 100 mM CTAB, 1.7 mL
of 10 mM HAuCl4a3H2O, 250 íL of 10 mM AgNO3. Next, 270
íL of 100 mM ascorbic acid was added, which changed the solution
from brown-yellow to colorless. To initiate nanorod growth, 420íL of the seed solution was added to the growth solution, mixed gently, and left still for 3 h.
之后离心,纯化,得到的AuNR@CTAB储存在水中备用。
   接下来,文章中就用3 mL (25 nM) of the originalAuNR@CTAB in water.
我想知道的就是金纳米棒的浓度(25nM) 是如何得出的呢?离心后用多少量的水储存也没有说。
   制备出来的金棒溶液怎么计算其浓度?
回复此楼

» 收录本帖的淘帖专辑推荐

纳米生物材料

» 猜你喜欢

» 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:

已阅   关注TA 给TA发消息 送TA红花 TA的回帖

于哈哈

铁杆木虫 (正式写手)

引用回帖:
3楼: Originally posted by CruiserD at 2013-07-12 10:12:49
难道是测的?取点样品消解后用AAS测一下(当然要做Au标准曲线)确定浓度?

Au的标准曲线怎么做呢?
4楼2013-07-12 10:50:12
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 14 个回答

于哈哈

铁杆木虫 (正式写手)

怎么没有人回复我呢?伤心!
2楼2013-07-12 08:54:55
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

CruiserD

至尊木虫 (著名写手)

【答案】应助回帖

★ ★
感谢参与,应助指数 +1
于哈哈: 金币+2 2013-07-13 22:23:19
难道是测的?取点样品消解后用AAS测一下(当然要做Au标准曲线)确定浓度?
卢瑟·西门罗夫同志
3楼2013-07-12 10:12:49
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

zihua886

铁杆木虫 (正式写手)

【答案】应助回帖

★ ★ ★ ★ ★
感谢参与,应助指数 +1
于哈哈: 金币+5 2013-07-13 22:22:36
引用回帖:
4楼: Originally posted by 于哈哈 at 2013-07-12 10:50:12
Au的标准曲线怎么做呢?...

自己用氯金酸配一系列标准溶液。
工作原因,暂离数月。
5楼2013-07-12 11:12:50
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
信息提示
请填处理意见