自模板法制备中空多孔银纳米片  

Synthesis and mechanism of porous hollow silver nanosheet by self-template method

作　　者：卢鹏荐 章嵩[1] 官建国[1] LU Peng-jian;ZHANG Song;GUAN Jian-guo(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《应用化工》2022年第1期89-92,共4页Applied Chemical Industry

基　　金：国家科技攻关计划(TZ2016001)。

摘　　要：为获得高比表面积的银纳米材料,采用自模板法合成中空多孔的银纳米片,边长为1μm,壁厚小于100 nm。在AgNO_(3)和PVP的混合溶液中掺入Na_(2)SiO_(3)溶液,形成多孔的四硅酸银纳米片。以四硅酸银纳米片为软模板,加入硼氢化钠还原剂,在低温(0℃)下制备了内部空心、表面多孔的银纳米片。对产物进行了详细的结构和形貌的表征分析。结果表明,银纳米片不但具有片状结构,而且具有内部空心表面多孔的夹层结构,可能在化学传递、生物医药、封装材料,特别是导电材料等领域中有着重大的应用。In order to obtain silver nanomaterials with high surface area, porous hollow silver nanosheets with the length of 1 μm and thickness of 100 nm were synthesized by self-template method.Na_(2)SiO_(3) solution is mixed into the mixed solution of AgNO_(3) and PVP to form porous silver Ag;Si;O;nanosheets.NaBH;was added to prepare porous hollow silver nanosheets with Ag;Si;O;nanosheets as templates at low temperature(0 ℃).The detailed structure and morphology of the product were characterized and analyzed.It was found that the silver nanosheets not only have a sheet-like structure, but also have a sandwich structure with a hollow inner surface and a porous surface, which may be used in chemical transfer, biomedicine, packaging materials, and especially conductive materials.

关 键 词：自模板法 中空多孔 银纳米片 形成机理 

分 类 号：TQ1312[化学工程—无机化工] O614.122[理学—无机化学]