典型文献
Titanium dioxide-graphene composite electrochemical sensor for detection of hexavalent chromium
文献摘要：
Hexavalent chromium (Cr(VI)) compound is useful to various industries but is toxic and carcinogenic. In this research work, we fab-ricate an amperometric sensor for the determination of Cr(VI), using a titanium dioxide (TiO2)-reduced graphene oxide (rGO) composite as the sensing element. The composite was synthesized following sol?gel chemistry, yielding TiO2 nanoparticles of ～50 nm in size, immobilized on chemically exfoliated rGO sheets. The composite was employed in a 3-electrode electrochemical cell and operated in an amperometric mode, exhibiting good responses to the 50 to 500 ppb Cr(VI). Our best result from pH 3 Mcilvane's buffer medium reveals the sensitivity of 9.12 × 10?4 ppb?1 and a detection limit of 6 ppb with no signal interference from 200 ppm Ca(II), 150 ppm Mg(II), and 50 ppb Pb(II). The excellent results of the TiO2-rGO sensor can be attributed to synergic effects between TiO2 and rGO, resulting from the presence of n-p heterojunctions and the formation of the TiO2 nanoparticles on rGO.
文献关键词：
中图分类号：
作者姓名：
Natpichan Pienutsa;Krittamet Yannawibut;Jetthana Phattharaphongmanee;Oukrit Thonganantakul;Sira Srinives
作者机构：
Nanocomposite Engineering Laboratory(NanoCEN),Department of Chemical Engineering,Faculty of Engineering,Mahidol University,25/25 Puttamonthon,Nakhon Pathom,73170,Thailand
文献出处：
引用格式：
[1]Natpichan Pienutsa;Krittamet Yannawibut;Jetthana Phattharaphongmanee;Oukrit Thonganantakul;Sira Srinives-.Titanium dioxide-graphene composite electrochemical sensor for detection of hexavalent chromium)[J].矿物冶金与材料学报,2022(03):529-535
A类：
amperometric,Mcilvane
B类：
Titanium,dioxide,graphene,composite,electrochemical,sensor,detection,hexavalent,chromium,Hexavalent,VI,compound,useful,various,industries,toxic,carcinogenic,In,this,research,work,fab,ricate,determination,using,titanium,TiO2,reduced,rGO,sensing,element,was,synthesized,following,sol,gel,chemistry,yielding,nanoparticles,immobilized,chemically,exfoliated,sheets,employed,electrode,operated,mode,exhibiting,good,responses,ppb,Our,best,from,buffer,medium,reveals,sensitivity,limit,signal,interference,ppm,II,Mg,Pb,excellent,results,can,attributed,synergic,effects,between,resulting,presence,heterojunctions,formation
AB值：
0.555812
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