Synthesis of Self-Supported Ordered Mesoporous Cobalt and Chromium Nitrides

材料科学 介孔材料 氮化物 高分辨率透射电子显微镜 化学工程 介孔二氧化硅 氧化物 金属 纳米线 纳米技术 催化作用 冶金 图层(电子) 透射电子显微镜 有机化学 化学 工程类
作者
Yifeng Shi,Ying Wan,Renyuan Zhang,Dongyuan Zhao
出处
期刊:Advanced Functional Materials [Wiley]
卷期号:18 (16): 2436-2443 被引量:98
标识
DOI:10.1002/adfm.200800488
摘要

Herein, we demonstrate an ammonia nitridation approach to synthesize self-supported ordered mesoporous metal nitrides (CoN and CrN) from mesostructured metal oxide replicas (Co3O4 and Cr2O3), which were nanocastly prepared by using mesoporous silica SBA-15 as a hard template. Two synthetic routes are adopted. One route is the direct nitridation of mesoporous metal oxide nanowire replicas templated from SBA-15 to metal nitrides. By this method, highly ordered mesoporous cobalt nitrides (CoN) can be obtained by the transformation of Co3O4 nanowire replica under ammonia atmosphere from 275 to 350 °C, without a distinct lose of the mesostructural regularity. Treating the samples above 375 °C leads to the formation of metallic cobalt and the collapse of the mesostructure due to large volume shrinkage. The other route is to transform mesostructured metal oxides/silica composites to nitrides/silica composites at 750–1000 °C under ammonia. Ordered mesoporous CrN nanowire arrays can be obtained after the silica template removal by NaOH erosion. A slowly temperature-program-decrease process can reduce the influence of silica nitridation and improve the purity of final CrN product. Small-angle XRD patterns and TEM images showed the 2-D ordered hexagonal structure of the obtained mesoporous CoN and CrN nanowires. Wide-angle XRD patterns, HRTEM images, and SAED patterns revealed the formation of crystallized metal nitrides. Nitrogen sorption analyses showed that the obtained materials possessed high surface areas (70–90 m2 g−1) and large pore volumes (about 0.2 cm3 g−1).
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
小轩子完成签到,获得积分10
刚刚
刚刚
可爱的函函应助BeforeDown采纳,获得10
1秒前
木杉完成签到,获得积分10
2秒前
易烊千玺发布了新的文献求助10
2秒前
蒲公英发布了新的文献求助10
3秒前
3秒前
cccj发布了新的文献求助10
5秒前
幸福的鑫鹏完成签到 ,获得积分10
5秒前
Qiancheni发布了新的文献求助10
5秒前
Estella完成签到,获得积分10
8秒前
木杉发布了新的文献求助10
9秒前
易烊千玺完成签到,获得积分10
9秒前
9秒前
10秒前
科研牛人发布了新的文献求助10
11秒前
12秒前
CipherSage应助rz顺利毕业采纳,获得30
12秒前
沐沐心完成签到 ,获得积分10
12秒前
十二应助蒲公英采纳,获得10
14秒前
橘落不落发布了新的文献求助10
16秒前
jenningseastera应助linkman采纳,获得50
17秒前
TH完成签到,获得积分10
17秒前
18秒前
Smiling完成签到,获得积分10
19秒前
帕金森发布了新的文献求助50
19秒前
研友_alan完成签到,获得积分10
20秒前
大模型应助大聪明采纳,获得10
21秒前
南风完成签到,获得积分10
22秒前
23秒前
一支笔画天下完成签到,获得积分10
23秒前
24秒前
俊逸的石头完成签到,获得积分10
25秒前
解语花应助痴情的博超采纳,获得50
25秒前
cherlie应助yang采纳,获得10
27秒前
28秒前
哈哈哈完成签到,获得积分10
28秒前
香蕉觅云应助Dravia采纳,获得30
28秒前
椰椰完成签到,获得积分10
29秒前
fun完成签到 ,获得积分10
30秒前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 1370
Secondary Ion Mass Spectrometry: Basic Concepts, Instrumental Aspects, Applications and Trends 1000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
Comparison of adverse drug reactions of heparin and its derivates in the European Economic Area based on data from EudraVigilance between 2017 and 2021 500
[Relativity of the 5-year follow-up period as a criterion for cured cancer] 500
Statistical Analysis of fMRI Data, second edition (Mit Press) 2nd ed 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3945559
求助须知:如何正确求助?哪些是违规求助? 3490258
关于积分的说明 11055986
捐赠科研通 3221259
什么是DOI,文献DOI怎么找? 1780506
邀请新用户注册赠送积分活动 865536
科研通“疑难数据库(出版商)”最低求助积分说明 799886