【摘 要】
：
Hybrid composite materials with hierarchical structures have attracted continuing attention for their enhanced features and various applications.The new hybrid composites XW9@PDA (XW9 means Na8 H[α-PW9O34],Na10[α-SiW9O34]and Na10[α-GeW9O34];PDA means poly
【机 构】
：
School of Public Health,Jilin University,Jilin 130021,China
论文部分内容阅读
Hybrid composite materials with hierarchical structures have attracted continuing attention for their enhanced features and various applications.The new hybrid composites XW9@PDA (XW9 means Na8 H[α-PW9O34],Na10[α-SiW9O34]and Na10[α-GeW9O34];PDA means polydopamine) have been synthesized for potential sensing applications.The effect of polyoxometalates on the formation of the hybrid composites was investigated.Scanning electron microscopy (SEM) supported the obtained XW9@PDA were hier-archical microsphere.By monitoring the reaction of classical peroxidase substrate o-phenylenediamine(OPD) to form yellow 2,3-diaminophenazine (DAB) in the presence of H2O2,the peroxidase-like activity of XW9@PDA was calculated.The results showed that XW9@PDA still keep the peroxidase-like activity and have 505.98％,208.58％ and 582.78％ enhancement in intrinsic catalytic activity for PW9@PDA,SiW9@PDA and GeW9@PDA.Among the three composites,PW9@PDA showed the highest peroxidase-like activity.Therefore,PW9@PDA was applicable to the colorimetric and electrochemical sensing for H2O2.
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