2007
DOI: 10.1021/ac0624142
|View full text |Cite
|
Sign up to set email alerts
|

H2O2 Sensor Based on the Room-Temperature Phosphorescence of Nano TiO2/SiO2 Composite

Abstract: A TiO2/SiO2 composite prepared by the sol-gel route can produce highly emissive broadband room-temperature phosphorescence at an excitation wavelength of 403 nm. The white phosphorescence of TiO2/SiO2 could be quenched by H2O2. The phosphorescence quenching effect demonstrated excellent sensitivity and high selectivity to H2O2. Furthermore, the phosphorescence of TiO2/SiO2 can be recovered when it is dipped in a hydroxylamine hydrochloride solution. Therefore, the TiO2/SiO2 was used to develop a reproducible p… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
81
0

Year Published

2010
2010
2021
2021

Publication Types

Select...
6
2

Relationship

1
7

Authors

Journals

citations
Cited by 168 publications
(81 citation statements)
references
References 29 publications
0
81
0
Order By: Relevance
“…Therefore, the formation of anionic triangular Ti (O 2-) blocked the Ti-O-Si vibration, which led to the quenching of phosphorescence of TiO2/SiO2. 24 In Fig. 3A, it is apparent that the time scan phosphorescence spectra of TiO2/SiO2 recorded at maximum emission peak, 540 nm, decreased gradually with the addition of H2O2.…”
Section: Performance Of Tio2/sio2 Nanoparticles For H2o2 Determinationmentioning
confidence: 89%
See 2 more Smart Citations
“…Therefore, the formation of anionic triangular Ti (O 2-) blocked the Ti-O-Si vibration, which led to the quenching of phosphorescence of TiO2/SiO2. 24 In Fig. 3A, it is apparent that the time scan phosphorescence spectra of TiO2/SiO2 recorded at maximum emission peak, 540 nm, decreased gradually with the addition of H2O2.…”
Section: Performance Of Tio2/sio2 Nanoparticles For H2o2 Determinationmentioning
confidence: 89%
“…The source of Ti and Si were obtained from tetrabutyltitanium and tetraethoxysilane, respectively. Based on previous studies carried out in our laboratory, 24 TiO2/SiO2 nanoparticles were synthesized by the sol-gel process. First, 3 ml tetraethoxysilane was dissolved in 6 ml isopropyl alcohol with continuous stirring, and then 1 ml tetrabutyltitanium was dripped into the mixed solution.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Shu et al [39] show that a nanoparticular TiO2/SiO2-composite obtained from a sol-gel has phosphorescence emission at room temperature at 535 nm when excited at 403 nm. Upon reaction with H2O2, superoxide radicals coordinate to Ti as shown by electron spin resonance spectroscopy (ESR).…”
Section: Sensors Sensing Membranes and Films For H 2 O 2 Detectionmentioning
confidence: 99%
“…The highly sensitive, selective and accurate analytical detection of hydrogen peroxide is of great relevance, because it is not only a by-product of several highly selective oxidases, but also an essential mediator in food, pharmaceutical, clinical, industrial, environmental analysis and many other fields [6,7]. Several analytical techniques such as fluorimetry [8], titrimetry [9], spectrometry [10], chemiluminescence [11] and electrochemical methods [12 -14] have been developed to monitor H 2 O 2 .…”
Section: Introductionmentioning
confidence: 99%