An Innovative Metal Ions Sensitive "Test Paper" Based on Virgin Nanoporous Silicon Wafer: Highly Selective to Copper(II).
An Innovative Metal Ions Sensitive "Test Paper" Based on Virgin Nanoporous Silicon Wafer: Highly Selective to Copper(II).
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基于原始纳米多孔硅片的创新金属离子敏感“试纸”:对铜(II)具有高选择性
DOI:
10.1038/srep36654
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发表时间:
2016-11-08
影响因子:
4.6
通讯作者:
Zou Y
中科院分区:
文献类型:
--
作者:
Li S;Chen X;Ma W;Ding Z;Zhang C;Chen Z;He X;Shang Y;Zou Y
Developing an innovative “Test Paper” based on virgin nanoporous silicon (NPSi) which shows intense visible emission and excellent fluorescence stability. The visual fluorescence quenching “Test Paper” was highly selective and sensitive recognizing Cu2+ at μmol/L level. Within the concentration range of 5 × 10−7 ~50 × 10−7mol/L, the linear regression equation of IPL = 1226.3-13.6[CCu2+] (R = 0.99) was established for Cu2+ quantitative detection. And finally, Cu2+ fluorescence quenching mechanism of NPSi prober was proposed by studying the surface chemistry change of NPSi and metal ions immersed-NPSi using XPS characterization. The results indicate that SiHx species obviously contribute to the PL emission of NPSi, and the introduce of oxidization state and the nonradiative recombination center are responsible for the PL quenching. These results demonstrate how virgin NPSi wafer can serve as Cu2+ sensor. This work is of great significant to promote the development of simple instruments that could realize rapid, visible and real-time detection of various toxic metal ions.
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影响因子:
--
作者:
Sam SS;Chazalviel JN;Gouget-Laemmel AC;Ozanam FF;Etcheberry AA;Gabouze NE
通讯作者:
Gabouze NE
影响因子:
2.1
作者:
Fischer, M;Hillerich, B;Kozlowski, F
通讯作者:
Kozlowski, F
影响因子:
2.1
作者:
LI, KH;TSAI, C;WHITE, JM
通讯作者:
WHITE, JM
影响因子:
10.8
作者:
Miao, Rong;Mu, Lixuan;Shi, Wensheng
通讯作者:
Shi, Wensheng
影响因子:
6.7
作者:
Ramirez-Porras, A.;Garcia, O.;Solis, J. D.
通讯作者:
Solis, J. D.