24小时热门版块排行榜    

北京石油化工学院2026年研究生招生接收调剂公告
查看: 2518  |  回复: 12

smcg

铜虫 (小有名气)

[交流] 【求助】Fe3O4颗粒表面包覆壳聚糖 Fe3O4溶液的要求? 已有1人参与

在Fe3O4颗粒表面包覆壳聚糖,Fe3O4颗粒必须溶于水溶液中,还是只用悬浮液就行了?

谢谢
回复此楼

» 收录本帖的淘帖专辑推荐

四氧化三铁纳米颗粒制备、修饰及包覆 吸附材料

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

juanjingmiao

银虫 (正式写手)


smcg(金币+1):谢谢参与
yunruirui:谢谢参与 2010-10-30 12:33:54
在水溶液中反应
2楼2010-10-30 10:15:07
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

wangh123

木虫 (正式写手)


smcg(金币+1):谢谢参与
yunruirui:谢谢参与交流 2010-10-30 12:34:03
你的反应体系什么样的?
3楼2010-10-30 10:48:17
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

lleecc1

金虫 (小有名气)


smcg(金币+1):谢谢参与
yunruirui:谢谢参与交流 2010-10-30 12:34:09
浙江 大学的 徐新华做过 纳米四氧化三铁的 负载,你去看看他的 英文论文,有一篇的,我记得。
4楼2010-10-30 10:56:11
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

lleecc1

金虫 (小有名气)

yunruirui:谢谢交流 2010-10-30 12:34:18
smcg(金币+2): 2010-10-30 15:22:26
Chromium (VI) reduction in aqueous solutions by Fe3O4-stabilized Fe0 nanoparticles  Original Research Article

Journal of Hazardous Materials, Volume 172, Issues 2-3, 30 December 2009, Pages 1640-1645

Yanjun Wu, Jinghui Zhang, Yifei Tong, Xinhua Xu
是这篇
5楼2010-10-30 11:01:27
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

lleecc1

金虫 (小有名气)

yunruirui:谢谢参与 2010-10-30 12:34:35
壳聚糖 负载纳米铁,南开大学 金朝晖 做过的。
6楼2010-10-30 11:02:23
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

mrzouhao

木虫之王 (文坛精英)

★ ★ ★
smcg(金币+1):谢谢参与
yunruirui(金币+2):谢谢参与 2010-10-30 12:34:27
smcg(金币+2): 2010-10-30 15:22:41
J Hazard Mater. 2009 Dec 30;172(2-3):1640-5. Epub 2009 Aug 18.

Chromium (VI) reduction in aqueous solutions by Fe3O4-stabilized Fe0 nanoparticles.
Wu Y, Zhang J, Tong Y, Xu X.

Department of Environmental Engineering, Zhejiang University, Zheda Road 38#, Hangzhou 310027, People's Republic of China.

Abstract
This paper describes the use of highly reactive magnetite (Fe(3)O(4)) nanoparticles-stabilized Fe(0) nanocomposites for the reduction and mitigation of hexavalent chromium Cr(VI) species in aqueous solutions. Higher proportions of Fe(3)O(4) in the nanocomposites could increase the rate of Cr(VI) reduction. In the absence of magnetite, the Cr(VI) mitigation rate was just 51.4% after 60 min of reaction, while with an initial Fe(3)O(4) mass loading of 3 g l(-1), the Cr(VI) mitigation rate was nearly 100% after 60 min. The optimal ratio of Fe(3)O(4):Fe(0) for the mitigation of Cr(VI) was found to be 40:1. Otherwise, solution pHs significantly affected the rate of Cr(VI) reduction, with reactions occurring more rapidly under acidic or neutral than basic conditions. It is hypothesized that the high efficiency of the Fe(3)O(4) nanoparticles-stabilized Fe(0) nanocomposites for Cr(VI) reduction was a direct result of the attachment of Fe(0) nanoparticles to the surface of magnetite, which prevents the aggregation of nano-Fe(0), moreover, the electron transfer during the reduction process most likely takes place via Fe(0) nanoparticles that are located at the magnetite octahedral sites, which are versatile redox centers as they can accommodate both Fe(III) and Fe(II), and this will promote the reduction of Cr(VI). Cr(VI) reduction is coupled with nano-Fe(0) oxidation. Nano-Fe(0) particles are located at the magnetite octahedral sites. Ions of Fe(II) and Fe(III) accommodated by magnetite octahedral sites are products of nano-Fe(0) oxidation. Therefore, Cr(VI) reduction is mediated either by nano-Fe(0) (direct reduction) or Fe(II) species (indirect reduction). Additionally, catalytic Cr(VI) reduction by molecular H(2) (or atomic H) is possible.
7楼2010-10-30 11:27:23
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

smcg(金币+1):谢谢参与
8楼2010-10-30 11:31:33
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

smcg

铜虫 (小有名气)

引用回帖:
Originally posted by wangh123 at 2010-10-30 10:48:17:
你的反应体系什么样的?

共沉淀法做
9楼2010-10-30 15:20:21
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

smcg

铜虫 (小有名气)

引用回帖:
Originally posted by lleecc1 at 2010-10-30 10:56:11:
浙江 大学的 徐新华做过 纳米四氧化三铁的 负载,你去看看他的 英文论文,有一篇的,我记得。

谢谢了
10楼2010-10-30 15:21:27
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 smcg 的主题更新
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 336材料与化工085600求调剂 +7 水星记infp 2026-04-05 7/350 2026-04-06 00:57 by fmesaito
[考研] 生物与医药273求调剂 +5 荔题南墙 2026-04-05 5/250 2026-04-05 22:04 by imissbao
[考研] 081200-11408-276学硕求调剂 +4 崔wj 2026-04-05 4/200 2026-04-05 20:29 by 啵啵啵0119
[考研] 301求调剂 +3 XYPLR 2026-04-05 4/200 2026-04-05 19:07 by XYPLR
[考研] 085410人工智能 初试316分 求调剂 +6 残星拂曙 2026-03-31 6/300 2026-04-05 12:15 by rainbow11
[考研] 070300化学求调剂 +17 小黄鸭宝 2026-03-30 17/850 2026-04-05 12:03 by 宁馨哈哈
[考研] 一志愿北京化工大学,初试成绩350求调剂 +9 沿岸?贝壳 2026-04-04 14/700 2026-04-05 01:09 by 沿岸?贝壳
[考研] 311分 22408 求调剂 +3 bing_bot 2026-04-03 3/150 2026-04-05 00:43 by chongya
[考研] 一志愿郑大0705求调剂 +3 橘十一 2026-04-02 4/200 2026-04-05 00:05 by chongya
[考研] 324求调剂 +14 想上学求调 2026-04-02 15/750 2026-04-04 20:31 by 无际的草原
[考研] 一志愿南农090401,268,求调剂 +5 一木鸟然 2026-04-04 5/250 2026-04-04 17:07 by babysonlkd
[考研] 22408求调剂 354分 可跨专业 +3 hannnnnnn 2026-04-04 3/150 2026-04-04 14:35 by 土木硕士招生
[考研] 一志愿北交大材料工程总分358 +6 cs0106 2026-04-03 6/300 2026-04-04 11:20 by w_xuqing
[考研] 297求调剂 +11 ljy20040718! 2026-04-03 13/650 2026-04-04 09:23 by 来看流星雨10
[考研] 求调剂,一志愿南京航空航天大学 ,080500材料科学与工程学硕 +10 @taotao 2026-04-03 10/500 2026-04-04 09:01 by T可可西里T
[考研] 0856调剂 +8 曲听筠 2026-03-30 8/400 2026-04-04 08:46 by tianyyysss
[考研] 求调剂 +4 压力??大 2026-04-03 4/200 2026-04-03 21:36 by 啵啵啵0119
[考研] 材料与化工调剂一志愿大连海事085600,349 +11 吃的不少 2026-03-30 11/550 2026-04-03 18:05 by Jimmyandyou
[考研] 材料调剂 +11 一样YWY 2026-03-31 11/550 2026-04-01 22:25 by zhouyuwinner
[考研] 土木304求调剂 +5 顶级擦擦 2026-03-31 5/250 2026-04-01 08:15 by fdcxdystjk¥
信息提示
请填处理意见