24小时热门版块排行榜    

Znn3bq.jpeg
查看: 2218  |  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

lzk5555

银虫 (初入文坛)

[求助] ZnO纳米粒子的合成 已有2人参与

我最近按照文献合成氧化锌纳米颗粒,参照文献如下,但是清洗沉淀后,加入氯仿和氯苯得不到透明的溶液,是白色乳浊液,而且容易沉淀,求原因,谢谢!
参考文献如下:
Waldo J. E. Beek, Martijn M. Wienk, Martijn Kemerink. Hybrid zinc oxide conjugated polymer bulk heterojunction solar cells. J. Phys. Chem. B, 2005, 109: 9505-9516
制备方法:
ZnO Nanoparticles Synthesis:zinc acetate dihydrate (Acros,98%, 2.95 g, 13.4 mmol) was dissolved in methanol (125 mL)at 60 °C, a solution of KOH (Merck, 87%, 1.48 g, 23 mmol) inmethanol (65 mL) was added in 10 min to the zinc acetate dihydrate solution under vigorous stirring. Zinc hydroxides precipitated but dissolved again. After 5 min, the solution became translucent and remained translucent. After 1.5 h, the nanoparticles started to precipitate and the solution became turbid. After 2 h and 15 min, the heater and stirrer were removed
and the nanoparticles were allowed to precipitate for an additional 2 h. Precipitate and mother liquor were separated, and the precipitate was washed twice with methanol (50 mL). After the washing steps (5 min), the suspension was left unstirred for a minimum of1hto reach full precipitation. The washed precipitate was treated with chloroform or chlorobenzene (10mL) to dissolve the nanoparticles. This solution was only slightly translucent, almost transparent, and was stable for more than two weeks. The amount of methanol in the resulting solution
was determined with 1H NMR. Replacing the last washing step with a centrifugation step (4300 rpm, 5 min) decreased the amount of methanol with a factor 2.

[ Last edited by sddtc888 on 2013-8-8 at 23:04 ]
回复此楼

» 本帖已获得的红花(最新10朵)

» 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:

好好学习,天天向上
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

wumengxia

新虫 (小有名气)

【答案】应助回帖

请问一下,这种方法得到的ZnO纳米颗粒直径是多少?
好好生活好好爱自己!
9楼2013-11-13 15:26:26
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 14 个回答

lzk5555

银虫 (初入文坛)

送红花一朵
这些资料我已经看过了,不过还是表示感谢
好好学习,天天向上
2楼2013-08-09 09:27:36
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

anndy1971

铁杆木虫 (著名写手)

催化达人

你们合成这个纳米氧化锌做神木催化剂?
3楼2013-08-13 11:21:13
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

lzk5555

银虫 (初入文坛)

引用回帖:
3楼: Originally posted by anndy1971 at 2013-08-13 11:21:13
你们合成这个纳米氧化锌做神木催化剂?

不做催化剂,做薄膜
好好学习,天天向上
4楼2013-08-13 11:43:54
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[论文投稿] 有没有接收比较快的sci期刊呀,最好在一个月之内的,研三孩子求毕业 20+4 之护着 2026-04-16 6/300 2026-04-19 13:00 by Aaron_zyn
[考研] 求调剂 +5 苦命人。。。 2026-04-18 6/300 2026-04-19 12:04 by 手机用户
[考研] 307中医考研调剂 +9 于以采蘩 2026-04-14 9/450 2026-04-19 08:41 by 烟雨流涯
[考研] 294求调剂 +15 淡然654321 2026-04-15 15/750 2026-04-19 08:20 by cuisz
[考研] 300求调剂 +12 橙a777 2026-04-15 12/600 2026-04-18 23:51 by 路病情
[考研] 一志愿沪9,326求生物学调剂 +12 刘墨墨 2026-04-13 12/600 2026-04-18 23:31 by 路病情
[考研] 生物学调剂 +10 纸扇zhishan 2026-04-13 10/500 2026-04-18 21:19 by zqndavala
[考研] 320求调剂 +5 深郊akm 2026-04-17 5/250 2026-04-18 19:52 by 王珺璞
[考研] 297,工科调剂? +5 河南农业大学-能 2026-04-14 5/250 2026-04-18 15:17 by Equinoxhua
[考研] 求调剂 +9 小聂爱学习 2026-04-16 11/550 2026-04-17 22:34 by chixmc
[考研] 304求调剂 +7 castLight 2026-04-16 7/350 2026-04-17 20:05 by 关一盏灯cd
[考研] 294求调剂 +7 淡然654321 2026-04-17 8/400 2026-04-17 16:36 by wutongshun
[考研] 药学求调剂 +14 喽哈加油 2026-04-14 16/800 2026-04-16 10:15 by beilsong20
[考研] 289 分105500药学专硕求调剂(找B区学校) +4 白云123456789 2026-04-13 4/200 2026-04-16 00:18 by 粉沁若尘
[考研] 297,工科调剂? +10 河南农业大学-能 2026-04-14 10/500 2026-04-15 21:50 by noqvsozv
[考研] 297工科调剂? +14 河南农业大学-能 2026-04-13 15/750 2026-04-15 13:25 by 黑科技矿业
[考研] 245求调剂 +6 冰糖橘?汽水 2026-04-13 10/500 2026-04-14 10:49 by jyl0317
[考研] 考研求调剂 +12 子木呐 2026-04-12 13/650 2026-04-14 01:19 by 王珺璞
[考研] 考研英一数一338分 +9 长江大学东校区 2026-04-13 10/500 2026-04-14 00:41 by 王珺璞
[考研] B区0809 ,数一英一,290 求调剂 +3 泠潍1111 2026-04-12 4/200 2026-04-13 20:35 by 学员JpLReM
信息提示
请填处理意见