标题:Fabrication of Nano-Porous Hydroxyapatite Modified Electrode and Its Application for Determination of p-Chlorophenol
作者:Lin Chu;Xiaoli Zhang
通讯作者:Zhang., X.
作者机构:[Chu, L] School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China;[ Zhang] X., School of Chemistry and Chemical Engineer 更多
来源:Journal of nanoscience and nanotechnology
出版年:2012
卷:12
期:1
页码:300-307
DOI:10.1166/jnn.2012.5132
关键词:Nano-Porous Hydroxyapatite Modified Electrode;P-Chlorophenol;Electrochemical Determination;Semi-Derivative Technique
摘要:Nano-porous hydroxyapatite (HAp) modified electrode was fabricated by simply electrodepositing HAp onto the glassy carbon electrode (GCE) from the electrolytes solution containing Ca(NO_3)_2 · 4H_2O and NH_4H_2PO_4, the resulting electrode (nano-HAp/GCE) was characterized with scanning electron microscopy (SEM). The electrochemical behavior of p-chlorophenol (p-CP) at nano-HAp/GCE was studied by cyclic voltammetry. The electrode displayed selective and enhanced electroanalytical response towards p-CP, obviously because p-CP is accumulated at the electrode. For the greater sensitivity, a semi-derivative technique was adopted to obtain the current signal. The results indicated that the nano-HAp/GCE exhibits substantial enhancement in electrochemical sensitivity for p-CP due to its large surface area and particular adsorbability. After accumulation of 4 min for p-CP on nano-HAp/GCE, the peak height was linearly related to the concentration of p-CP in the range of 1.0 × 10~(-8) to 1.0 × 10~(-7) mol L~(-1). The detection limit was 4.0 × 10~(-9) mol L~(-1) at 3σ level. Based on this, the modified electrode was successfully applied in water samples with low cost and high sensitivity.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:7
Scopus被引频次:7
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861158999&doi=10.1166%2fjnn.2012.5132&partnerID=40&md5=7a04617d21752c882cec7a68d841e5df
TOP