多层分步镀方法制备用于氢气分离的Pd-Ag膜（英文）
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摘要
用基于化学镀方法的钯银共沉积和分步沉积2种方法制备了PdAg膜。对比研究了2种方法制备的钯银膜的形貌、相结构、成分均匀性和致密性。实验结果表明共沉积法获得的钯银膜是树枝状的,成分不均匀,且致密性很差。分步沉积获得的钯银膜成分均匀、沿侧面生长趋势好,更适合制备超薄致密的用于氢气分离的钯银合金膜。多层分步镀形成Pd-Ag合金需要更高的温度和更长时间的热处理。Ag层的交替使得Pd的晶粒减小,并且最终沉积的膜表面更光滑。
Both sequential-deposition and co-deposition based on electroless plating method for the preparation of Pd-Ag composite membranes were investigated.The morphology,phase structure,compositional homogeneity and compactness of the prepared membranes were compared.The results show that Pd-Ag membranes prepared by co-deposition are dendritic,inhomogeneous,and poorly compact,while those by multilayer sequential deposition are more homogeneous and compact.The multi-layer sequential deposition requires higher temperature and longer time for annealing to form Pd-Ag alloy.The Pd particles size is decreased by separate Ag layer and the surface of Pd-Ag membrane is smoother.
Both sequential-deposition and co-deposition based on electroless plating method for the preparation of Pd-Ag composite membranes were investigated.The morphology,phase structure,compositional homogeneity and compactness of the prepared membranes were compared.The results show that Pd-Ag membranes prepared by co-deposition are dendritic,inhomogeneous,and poorly compact,while those by multilayer sequential deposition are more homogeneous and compact.The multi-layer sequential deposition requires higher temperature and longer time for annealing to form Pd-Ag alloy.The Pd particles size is decreased by separate Ag layer and the surface of Pd-Ag membrane is smoother.
引文
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2 Ryi S K,Park J S,Hwang K R et al.Korean J Chem Eng[J],2012,29(1):59
3 Tucho W M,Venvik H J,Walmsley J C et al.J Mater Sci[J],2009,44:4429
4 Alexeeva O K,Amirkhanov D M,Kotenko A A et al.Hydrogen Materials Science and Chemistry of Carbon Nanomaterials[M].New York,Boston:Kluwer Academic Publishers,2007:95
5 Foletto E L,Wirbitzkida Da Silveira J V,Jahn S L.Lat Am Appl Res[J],2008,38:79
6 Augustine A S,Ma Y H,Kazantzis N K.International Journal of Hydrogen Energy[J],2011,36(9):5350
7 Kilicarslan S,Dogan M.Gazi University Journal of Science[J]2012,25(2):485
8 Bosko M L,Miller J B,Lombardo E A et al.J Membr Sci[J]2011,369(1-2):267
9 Mendes D M P.Thesis for Master[D].Porto:University of Porto,2010
10 James R T.Thesis for Master[D].Maryland:University of Maryland,2010
11 Zhang Baoquan,Guo Ruijie,Liu Xiufeng.Appl Surf Sci[J],2008,254(17):5394
12 Tong J H,Su L L,Haraya K et al.Chem Commun[J],2006(10):1142
13 Tanaka D A P,Tanco M A L,Niwa S et al.J Membr Sci[J],2005,247(1-2):21
14 Ayturk M E,Ma Y H.J Membr Sci[J],2009,330(1-2):233
15 Wang Dan,Tong Jianhua,Xu Hengyong et al.Cataly Today[J],2004,93-95:689
16 Shi Z L,Szpunar J A.Rev Adv Mater Sci[J],2007,15:1
17 Bhandari R,Ma Y H.J Membr Sci[J],2009,334(1-2):50
18 Ayturk M E.Thesis for Master[D].Worcester:Worcester Polytechnic Institute,2007
19 Ayturk M E,Engwall E E,Ma Y H.Ind Eng Chem Res[J],2007,46(12):4295
20 Hatlevik?,Gade S K,Keeling M K et al.Separa Purifi Tech[J],2010,73(1):59