Correlation between structural and optical properties of surfactant assisted sol–gel based mesoporous SiO2–TiO2 hybrid nanoparticles for pH sensing/optochemical sensor

2016 ◽  
Vol 225 ◽  
pp. 66-73 ◽  
Author(s):  
S. Islam ◽  
N. Bidin ◽  
S. Riaz ◽  
S. Naseem ◽  
F.M. Marsin
Keyword(s):  
Optical Properties ◽  
Sol Gel ◽  
Hybrid Nanoparticles ◽  
Ph Sensing ◽  
Structural And Optical Properties ◽  
Mesoporous Sio2 ◽  
Surfactant Assisted ◽  
Optochemical Sensor

STRUCTURAL AND OPTICAL PROPERTIES OF SURFACTANT ASSISTED SiO2-TiO2 HYBRID MATRIX FOR PH SENSING: SOL-GEL APPROACH

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Shumaila Islam ◽  
Noriah Bidin ◽  
Saira Riaz ◽  
Shahzad Naseem
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
High Surface ◽  
Sol Gel ◽  
Ph Sensing ◽  
Structural And Optical Properties ◽  
Functional Coating ◽  
Hybrid Matrix ◽  
Surfactant Assisted ◽  
Low Refractive Index

Structural and optical properties of surfactant-assisted SiO2-TiO2 hybrid matrix as a highly responsive optical sensing material by sol-gel method are investigated. Microscopic results indicate the uniform morphology with large pores without any cracks. Matrices have a high surface area (489–342 m2/g), which has more capability to sense the broader pH range. From UV–visible spectroscopy, it is found that after encapsulation, matrix has ~ 78 % optical transparency with low refractive index of 1.44 corresponding to thickness 138.7 nm. Sensing analysis revealed that the prepared coating has good sensitivity at pH 12 and fast response time. Low refractive index and highly porous matrix, combined for achieving a good responsive optical chemical sensors. This research also opens an aveanue for ths material to be considered as a functional coating.

Influence of Cd doping on structural and optical properties of (Cd, Al)-codoped ZnO powders synthesized via sol–gel method

2015 ◽  
Vol 645 ◽  
pp. 529-534 ◽  
Author(s):  
Libing Duan ◽  
Xiaoru Zhao ◽  
Yajun Wang ◽  
Hao Shen ◽  
Wangchang Geng ◽  
...  
Keyword(s):  
Optical Properties ◽  
Sol Gel ◽  
Structural And Optical Properties ◽  
Gel Method ◽  
Sol Gel Method ◽  
Cd Doping ◽  
Zno Powders

scholarly journals Co doping induced structural and optical properties of sol–gel prepared ZnO thin films

2014 ◽  
Vol 318 ◽  
pp. 309-313 ◽  
Author(s):  
Ebru Gungor ◽  
Tayyar Gungor ◽  
Deniz Caliskan ◽  
Abdullah Ceylan ◽  
Ekmel Ozbay
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Structural And Optical Properties ◽  
Co Doping

scholarly journals Structural and optical properties of SnO2–Al2O3 nanocomposite synthesized via sol-gel route

2015 ◽  
Vol 33 (4) ◽  
pp. 714-718 ◽  
Author(s):  
Neeraj K. Mishra ◽  
Chaitnaya Kumar ◽  
Amit Kumar ◽  
Manish Kumar ◽  
Pratibha Chaudhary ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Optical Properties ◽  
Sol Gel ◽  
Physical Interaction ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
X Ray ◽  
Sensing Applications ◽  
Scanning Electron

AbstractA nanocomposite of 0.5SnO2–0.5Al2O3 has been synthesized using a sol-gel route. Structural and optical properties of the nanocomposite have been discussed in detail. Powder X-ray diffraction and scanning electron microscopy with energy-dispersive X-ray diffraction spectroscopy confirm the phase purity and the particle size of the 0.5SnO2–0.5Al2O3 nanocomposite (13 to 15 nm). The scanning electron microscopy also confirms the porosity in the sample, useful in sensing applications. The FT-IR analysis confirms the presence of physical interaction between SnO2 and Al2O3 due to the slight shifting and broadening of characteristic bands. The UV-Vis analysis confirms the semiconducting nature because of direct transition of electrons into the 0.5SnO2–0.5Al2O3 nanocomposites.

Structural and Optical Properties of Al Co-Doped ZnCoO Thin Film

2014 ◽  
Vol 989-994 ◽  
pp. 656-659
Author(s):  
Ping Cao ◽  
Yue Bai
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Al Doping ◽  
X Ray ◽  
Uv Emission ◽  
Uv Absorption Spectroscopy ◽  
Co Doped

Al co-doped ZnCoO thin film has been prepared by a sol-gel method. The structural and optical properties of the sample were investigated. X-ray diffraction and UV absorption spectroscopy analyses indicate that Al3+ and Co2+ substitute for Zn2+ without changing the wurtzite structure. With the Al doping, the visible emission increased and the UV emission decreased, which is attributed to the increase of O vacancies and Zn interstitials.

scholarly journals Study of sol-gel Cu-doped Al2O3 thin films: structural and optical properties

2014 ◽  
Vol 514 ◽  
pp. 012008 ◽  
Author(s):  
T Ivanova ◽  
A Harizanova ◽  
T Koutzarova ◽  
B Vertruyen
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Sol Gel ◽  
Structural And Optical Properties

Effect of annealing temperature on the structural and optical properties of ZnO thin films prepared by sol–gel method

Ionics ◽  
2010 ◽  
Vol 16 (9) ◽  
pp. 815-820 ◽  
Author(s):  
Yidong Zhang ◽  
Wenjun Fa ◽  
Fengling Yang ◽  
Zhi Zheng ◽  
Pingyu Zhang
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Structural And Optical Properties ◽  
Gel Method ◽  
Sol Gel Method
Sign in / Sign up

Export Citation Format

Share Document