嵌段共聚物自组装合成Fe_2N纳米花
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- 英文论文题名：Synthesis of Fe_2N nanoflowers via block copolymer assisted self-assembly
- 论文作者：姜慧芳 ; 杨明辉
- 英文论文作者：Huifang Jiang ; Minghui Yang ; Dalian Institute of Chemical Physics ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院大连化学物理研究所;
- 论文关键词：过渡金属氮化物 ; 嵌段共聚物 ; 自组装 ; 二维纳米片
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：O614.811;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：231k
- 原文格式：D
- 会议级别：全国
摘要
过渡金属氮化物因为其独特的类贵金属性质在催化方面得到广泛的重视,而形貌是影响过渡金属氮化物催化性能的因素之一。本文利用溶剂热法,通过Pluronics系列嵌段共聚物的自组装合成了铁氢氧化物前驱体二维纳米片组成的纳米花。二维纳米片的厚度约为几十纳米,并且可以随着嵌段共聚物嵌段间比例的改变适当调整。之后含铁前驱体在氨气氛围中程序升温氮化,氮化产物能够在高温下保持原来含铁前驱体的形貌,最终形成结晶度高,结构完整的Fe_2N纳米片。该方法为在高温下合成特殊形貌过渡金属氮(氧)化物的研究提供了一种新的思路。
Transition metal nitrides have attracted great interest in the catalytic field for their noble metal catalyst-like properties, and the morphology is one of the key points to affect their catalytic property. Here, 2D hydroxides nanosheets precursor were prepared through a self-assemble solvothermal method, and the thickness of the nanosheets was dozens of nanometers, which can be modified by different block ratio appropriately. Then, the Fe_2 N with high crystalline and integrated structure were obtained through nitriding the precursors under ammania flow by using temperature programming process. The morphology of Fe_2 N shows hardly change compared with 2D hydroxides nanosheets precursor. Our work will offer a new way to control the morphology of transition metal nitrides(oxides) in high temperature.
Transition metal nitrides have attracted great interest in the catalytic field for their noble metal catalyst-like properties, and the morphology is one of the key points to affect their catalytic property. Here, 2D hydroxides nanosheets precursor were prepared through a self-assemble solvothermal method, and the thickness of the nanosheets was dozens of nanometers, which can be modified by different block ratio appropriately. Then, the Fe_2 N with high crystalline and integrated structure were obtained through nitriding the precursors under ammania flow by using temperature programming process. The morphology of Fe_2 N shows hardly change compared with 2D hydroxides nanosheets precursor. Our work will offer a new way to control the morphology of transition metal nitrides(oxides) in high temperature.
引文
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[2]Yang.M.;J.Oro′-Sole′,J.Rodgers,et al.Nat.Chem.2011,3:47.
[2]Yang.M.;J.Oro′-Sole′,J.Rodgers,et al.Nat.Chem.2011,3:47.