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

Shu, Xiaohong; Chen, Ying; Yuan, Huatang; Gao, Shangfeng; Xiao, Dan

doi:10.1021/ac0624142

Cited by 166 publications

(81 citation statements)

References 29 publications

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“…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%

“…22 Reports on silica-based phosphors have noted that the highly emissive broad and stable materials were important for display and lighting technologies. 23 On this basis, a series of metal-doped nanosilica, such as TiO2/SiO2, 24,25 PbO/SiO2, 26 ZnO/SiO2, 27 and B2O3/SiO2 28 , were synthesized and have performed some excellent detection. In this study, the active phosphor of TiO2/SiO2 nanoparticles was successfully used to develop a reliable phosphorescence test kit and applied to the determination of H2O2 in a complicated bleaching effluent sample.…”

Section: Introductionmentioning

confidence: 99%

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Synchronous Multi-sits Determination of H2O2 in Vertical Water Based on Phosphor TiO2/SiO2 Nanocomposite

et al. 2016

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A promising strategy for trace analysis of hydrogen peroxide (H2O2) in natural water was established based on solid substrate room temperature phosphorimetry. The use of TiO2/SiO2 composite material as a phosphor for H2O2 detection was investigated. TiO2/SiO2 nanoparticle material was manufactured into a test kit for synchronous multilevel sampling test in the water sample reservoir. The proposed TiO2/SiO2 test kit displayed a wide linear response to H2O2 concentrations ranging from 1.0 × 10 -6 to 1.0 × 10 -1 M with a detection limit of 4.6 × 10 -7 M. When the concentration of other species was 100 times of 1.0 × 10 -4 M H2O2, the proposed test kit exhibited good selectivity toward the coexistence of 20 foreign ions. Satisfactory agreement between the proposed kit and spectrophotometric method was obtained, which demonstrated the possibility of its further development into a promising commercial phosphorescence sensor.

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Section: Performance Of Tio2/sio2 Nanoparticles For H2o2 Determinationmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synchronous Multi-sits Determination of H2O2 in Vertical Water Based on Phosphor TiO2/SiO2 Nanocomposite

et al. 2016

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“…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%

New Nanomaterials and Luminescent Optical Sensors for Detection of Hydrogen Peroxide

2015

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Accurate methods that can continuously detect low concentrations of hydrogen peroxide (H2O2) have a huge application potential in biological, pharmaceutical, clinical and environmental analysis. Luminescent probes and nanomaterials are used for fabrication of sensors for H2O2 that can be applied for these purposes. In contrast to previous reviews focusing on the chemical design of molecular probes for H2O2, this mini-review highlights the latest luminescent nanoparticular materials and new luminescent optical sensors for H2O2 in terms of the nanomaterial composition and luminescent receptor used in the sensors. The nanomaterial section is subdivided into schemes based on gold nanoparticles, polymeric nanoparticles with embedded enzymes, probes showing aggregation-induced emission enhancement, quantum dots, lanthanide-based nanoparticles and carbon based nanomaterials, respectively. Moreover, the sensors are ordered according to the type of luminescent receptor used within the sensor membranes. Among them are lanthanide complexes, metal-ligand complexes, oxidic nanoparticles and organic dyes. Further, the optical sensors are confined to those that are capable to monitor the concentration of H2O2 in a sample over time or are reusable. Optical sensors responding to gaseous H2O2 are not covered. All nanomaterials and sensors are characterized with respect to the analytical reaction towards H2O2, limit of detection (LOD), analytical range, electrolyte, pH and response time/incubation time. Applications to real samples are given. Finally, we assess OPEN ACCESSChemosensors 2015, 3 254 the suitability of the nanomaterials to be used in membrane-based sensors and discuss future trends and perspectives of these sensors in biomedical research.

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“…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%

Analytical Biosensing of Hydrogen Peroxide on Brilliant Cresyl Blue/Multiwalled Carbon Nanotubes Modified Glassy Carbon Electrode

Peng¹,

Upadhyay²,

Chen³

2010

Electroanalysis

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A cationic quinine-imide dye brilliant cresyl blue (BCB) and horseradish peroxidase (HRP) were co-immobilized within ormosil on multiwalled carbon nanotubes modified glassy carbon electrode for the fabrication of highly sensitive and selective hydrogen peroxide biosensor. The presence of epoxy group in ormosil as organic moiety improves the mechanical strength and transparency of the film and amino group provides biocompatible microenvironment for the immobilization of enzyme. The presence of MWCNTs improved the conductivity of the nanocomposite film. The surface characterization of MWCNT modified ormosil nanocomposite film was performed with scanning electron microscopy (SEM) and atomic force microscopy (AFM). Cyclic voltammetry and amperometry measurements were used to study and optimize the performance of the resulting peroxide biosensor. The apparent Michaelis -Menten constant was determined to be 1.5 mM. The proposed H 2 O 2 biosensor exhibited wide linear range from 3 Â 10 À7 to 1 Â 10 À4 M, and low detection limit 1 Â 10 À7 M (S/N ¼ 3) with fast response time < 5 s. The probable interferences in bio-matrix were selected to test the selectivity and no significant response was observed in the biosensor. This biosensor possessed good analytical performance and long term storage stability.

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

Cited by 166 publications

References 29 publications

Synchronous Multi-sits Determination of H2O2 in Vertical Water Based on Phosphor TiO2/SiO2 Nanocomposite

Synchronous Multi-sits Determination of H2O2 in Vertical Water Based on Phosphor TiO2/SiO2 Nanocomposite

New Nanomaterials and Luminescent Optical Sensors for Detection of Hydrogen Peroxide

Analytical Biosensing of Hydrogen Peroxide on Brilliant Cresyl Blue/Multiwalled Carbon Nanotubes Modified Glassy Carbon Electrode

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