CAJ | 학술논문

采用3种不同的络合剂[柠檬酸三钠、反式-1,2-环己二胺四乙酸·一水( C14 H22 N2 O8·H2 O, CyDTA)和氨水]制备了3种Pd-Sn/C催化剂。用X射线能量色散谱( EDS)、X射线衍射谱( XRD)和透射电子显微镜(TEM)表征了3种催化剂的平均粒径、形貌和组成。 X射线光电子能谱(XPS)的测试结果表明,3种催化剂表面存在Sn和SnOx 2种状态。电化学测试结果表明,3种催化剂在碱性电解液中对乙醇氧化的电催化性能均优于商业化的Pd/C催化剂,其中用CyDTA制备的Pd-Sn/C催化剂在碱性溶液中对乙醇氧化的电催化性能最好。
채용3충불동적락합제[저몽산삼납、반식-1,2-배기이알사을산·일수( C14 H22 N2 O8·H2 O, CyDTA)화안수]제비료3충Pd-Sn/C최화제。용X사선능량색산보( EDS)、X사선연사보( XRD)화투사전자현미경(TEM)표정료3충최화제적평균립경、형모화조성。 X사선광전자능보(XPS)적측시결과표명,3충최화제표면존재Sn화SnOx 2충상태。전화학측시결과표명,3충최화제재감성전해액중대을순양화적전최화성능균우우상업화적Pd/C최화제,기중용CyDTA제비적Pd-Sn/C최화제재감성용액중대을순양화적전최화성능최호。
Three complexants, sodium citrate, trans-1,2-diaminocyclohexane-N,N,N’,N’ -tetraacetic acid hydrate( C14 H22 N2 O8 ·H2 O, CyDTA) and ammonia, were used to prepare Pd-Sn/C catalysts. It is found that the electrocatalytic performances of these three catalysts for ethanol oxidation in alkaline solution are better than commercialized Pd/C catalyst. The average particle diameter, morphology and composition of the Pd-Sn/C catalysts prepared were characterized by energy dispersive X-ray spectroscopy ( EDS ) , X-ray diffraction (XRD) and transmission electron microscopy(TEM). X-ray photoclectron spectroscopy(XPS) measurement reveales that tin oxide and tin exist on the surface of the catalysts. The results of the electrochemical measure-ments indicate that the Pd-Sn/C-CyDTA catalyst has the best electrocatalytic performance for ethanol oxidation in alkaline solution.