界面诱导组装制备过渡金属基二维纳米片
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- 英文论文题名：Free-Standing Ultrathin Nanosheets Synthesized by Means of In Situ Reduction and Interface-Directed Assembly
- 论文作者：杜世超 ; 吴君 ; 任志宇
- 英文论文作者：Shichao Du ; Jun Wu ; Zhiyu Ren ; Honggang Fu ; Key Laboratory of Functional Inorganic Material Chemistry ; Ministry of Education of the People's Republic of China
- 年：2016
- 作者机构：黑龙江大学功能无机材料化学教育部重点实验室;
- 论文关键词：界面导向 ; 二维纳米材料 ; 电催化水制氧 ; 双金属
- 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：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：285k
- 原文格式：D
- 会议级别：全国
摘要
类石墨烯二维材料因具有大的比表面积、优异的电子结构等特性,在电催化水制氧、二氧化碳还原等电催化领域受到广泛关注~[1-2]。对于非层板状的材料而言,二维结构的构筑一直是合成难点。我们设计了有效的界面导向合成方法制备了多种纳米晶交错组装的超薄纳米片。两相界面处,伴随着有机相中金属-有机胺配合物的快速还原,大量生成的金属氧化物簇在界面张力挤压下相互连接、组装,受界面厚度的限制形成超薄的片状结构。该方法具有普适性,可用于制备Co、Ni、Fe、Cu及双金属Co Ni的二维氢氧化物(氧化物)纳米薄片~[3,4]。因为这系列材料具有大电化学比表面积、弱结晶度等优势,表现出优异的电催化水制氧的性能。
Due to 2D nanomaterials with high performance in many fields(such as OER and CO2 electroreduction etc.), the preparation 2D nanomaterials cause wide attention. Herein, by considering the role of the driving force and platform in the formation of nanosheets, we explore an unconventional liquid-liquid interface strategy to synthesize free-standing and ultrathin nanosheets. The nanosheets were prepared by a simple two-step method: 1) a phase-transfer process to form coordination complexes of metallic ions and oleylamine dissolved in toluene; 2) reduction by Na BH_4 at the two-phase interface. We consider that plenty of nanosized nanoparticles could be produced at the two-phase interface in a short time, which could further assemble with OAm assistance and cluster to form ultrathin nanosheets at the interface, which were used as electrochemistry catalysts.
Due to 2D nanomaterials with high performance in many fields(such as OER and CO2 electroreduction etc.), the preparation 2D nanomaterials cause wide attention. Herein, by considering the role of the driving force and platform in the formation of nanosheets, we explore an unconventional liquid-liquid interface strategy to synthesize free-standing and ultrathin nanosheets. The nanosheets were prepared by a simple two-step method: 1) a phase-transfer process to form coordination complexes of metallic ions and oleylamine dissolved in toluene; 2) reduction by Na BH_4 at the two-phase interface. We consider that plenty of nanosized nanoparticles could be produced at the two-phase interface in a short time, which could further assemble with OAm assistance and cluster to form ultrathin nanosheets at the interface, which were used as electrochemistry catalysts.
引文
[1]Gao,S.;Lin,Y.;Jiao,X.;Sun,Y.;Luo,Q.;Zhang,W.;Li,D.;yang.J.;Xie,Y.Nature 2016,529(7):68-71.
[2]Sun,Y.F.;Gao,S.;Lei,F.C.;Xiao,C.;Xie,Y.;Acc.Chem.Res.2015,48:3–12.
[3]Du,S.;Ren,Z.;Qu,Y.;Kong,L.;Wang,J.;Shi,K.;Fu,H.Chempluschem.2013,78(6):481-485.
[4]Wu,J.;Ren,Z.;Du,S.;Kong,L.;Liu,B.;Xi,W.;Zhu,J.;Fu,H.Nano Res.2016,9(3):713-725.
[2]Sun,Y.F.;Gao,S.;Lei,F.C.;Xiao,C.;Xie,Y.;Acc.Chem.Res.2015,48:3–12.
[3]Du,S.;Ren,Z.;Qu,Y.;Kong,L.;Wang,J.;Shi,K.;Fu,H.Chempluschem.2013,78(6):481-485.
[4]Wu,J.;Ren,Z.;Du,S.;Kong,L.;Liu,B.;Xi,W.;Zhu,J.;Fu,H.Nano Res.2016,9(3):713-725.