室温PVP还原银氨溶液法制备纳米银片及表征
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摘要
以聚乙烯吡咯烷酮(PVP)为还原剂,在室温条件下还原银氨溶液制备纳米银片。用X射线粉末衍射(XRD)、透射电子显微镜(TEM)、紫外-可见(UV-Vis)吸收光谱对产物进行表征。结果表明,通过改变PVP用量及静置时间,可以调控纳米银片的形貌。
Silver nanoflakes were reduced by silver ammonia solution with polyvinylpyrrolidone(PVP) as reductant under room temperature.The products were characterized by XRD,TEM and UV-Vis.The results indicated that the morphologies of silver nanoflakes can be tuned by changing concentration of PVP and standing time.
Silver nanoflakes were reduced by silver ammonia solution with polyvinylpyrrolidone(PVP) as reductant under room temperature.The products were characterized by XRD,TEM and UV-Vis.The results indicated that the morphologies of silver nanoflakes can be tuned by changing concentration of PVP and standing time.
引文
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[2]赖文忠,赵威,杨容等.用双还原法制备三角形银纳米片及其光学性能[J].物理化学学报,2010,26(4):1177—1183.
[3]吴青松,赵岩,张彩碚等.片状三角形银纳米颗粒的自组织行为与光学特性[J].物理学报,2005,54(3):1452—1456.
[4]赖文忠,赵威,李星国.多形貌纳米银的可控合成研究进展[J].稀有金属材料与工程,2011,40(7):1311—1316.
[5]Cao Z W,Fu HB,Kang L T et al.Rapid room-Temperature Synthesis of Silver Nanoplates with Tunable in-Plane Surface PlasmonResonance from Visible to Near-IR[J].J.Mater.Chem.,2008,18(23):2673—2678.
[6]何爱山,云志.低温苯胺化学还原法合成三角形银纳米片[J].南京工业大学学报:自然科学版,2010,32(1):98—101.
[7]武慧芳,马艳芸,谢兆雄.银纳米片的室温合成及其生长机理[J].科学通报,2007,52(18):2217—2219.
[8]Washio I,Xiong Y J,Yin Y D et al.Reduction by the End Groups of Poly(Vinyl Pyrrolidone):A New and Versatile Route to theKinetically Controlled Synthesis of Ag Triangular Nanoplates[J].Adv.Mater.,2006,18(13):1745—1749.
[9]王卫伟.利用聚乙烯吡咯烷酮制备银纳米粒子[J].山东理工大学学报:自然科学版,2007,21(6):43—45.
[10]Jin R C,Cao Y W,Mirkin C A et al.Photoinduced Conversion of Silver Nanospheres to Nanoprisms[J].Science,2001,294(5548):1901—1903.
[11]Sun Y G,Mayer B,Xia Y N.Transformation of Silver Nanospheres into Nanobelts and Triangular Nanoplates Through a ThermalProcess[J].Nano.lett.,2003,3(5):675—679.
[12]Wiely B J,Sun Y G,Chen J Y et al.Shape-Controlled Synthesis of Silver and Gold Nanostructures[J].MRS Bulletin,2005,30(5):356—361.
[13]Sun Y G,Yin Y D,Mayer B T et al.Uniform Silver Nanowires Synthesis by Reducing AgNO3with Ethylene Glycol in thePresence of Seeds and Poly(Vinyl Pyrrolidone)[J].Chem.Mater.,2002,14(11):4736—4745.