Electrode layers for electrochemical applications based on functionalized mesoporous silica films

2007 ◽  
Vol 126 (1) ◽  
pp. 78-81 ◽  
Author(s):  
D FATTAKHOVAROHLFING ◽  
M WARK ◽  
J RATHOUSKY
Keyword(s):  
Mesoporous Silica ◽  
Silica Films ◽  
Functionalized Mesoporous Silica ◽  
Electrochemical Applications

Functionalized Mesoporous Silica Films as a Matrix for Anchoring Electrochemically Active Guests

Langmuir ◽  
2005 ◽  
Vol 21 (24) ◽  
pp. 11320-11329 ◽  
Author(s):  
Dina Fattakhova Rohlfing ◽  
Jiří Rathouský ◽  
Yven Rohlfing ◽  
Oliver Bartels ◽  
Michael Wark
Keyword(s):  
Mesoporous Silica ◽  
Silica Films ◽  
Functionalized Mesoporous Silica ◽  
Electrochemically Active

Phosphate removal using free-standing functionalized mesoporous silica films with excellent recyclability

2020 ◽  
Vol 296 ◽  
pp. 109953 ◽  
Author(s):  
Xuan Jing ◽  
Yinhua Jiang ◽  
Yunyun Wang ◽  
Enxiu Liu ◽  
Rujia Cheng ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Phosphate Removal ◽  
Free Standing ◽  
Silica Films ◽  
Functionalized Mesoporous Silica

Chemical sensors based on dielectric response of functionalized mesoporous silica films

2001 ◽  
Vol 16 (10) ◽  
pp. 2810-2816 ◽  
Author(s):  
Karel Domansky ◽  
Jun Liu ◽  
Li-Qiong Wang ◽  
Mark H. Engelhard ◽  
Suresh Baskaran
Keyword(s):  
Dielectric Constant ◽  
Mesoporous Silica ◽  
Chemical Sensors ◽  
Dielectric Response ◽  
Chemical Species ◽  
Dissipation Factor ◽  
Silica Films ◽  
Chemical Treatments ◽  
Functionalized Mesoporous Silica ◽  
Highly Sensitive

Dielectric response of mesoporous silica films was monitored as a function of several gas-phase chemical species. The effects of humidity, ammonia, and methane on dielectric constant and dissipation factor of films subjected to different chemical treatments are described. Dielectric constant and dissipation factor of partially dehydroxylated films were found to be highly sensitive to both water vapor and ammonia in air. The capacitive devices based on mesoporous silica films show potential for use in chemical sensors.

Functionalized mesoporous silica films for gas sensing applications

2006 ◽  
Vol 16 (4) ◽  
pp. 503-505 ◽  
Author(s):  
Alagappan Palaniappan ◽  
Xiaodi Su ◽  
Francis E. H. Tay
Keyword(s):  
Mesoporous Silica ◽  
Gas Sensing ◽  
Silica Films ◽  
Functionalized Mesoporous Silica ◽  
Sensing Applications

Molybdenum polyoxometalate impregnated amino- functionalized mesoporous silica thin films as multifunctional materials for photochromic and electrochemical applications

2008 ◽  
Vol 23 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Xueao Zhang ◽  
Wenjian Wu ◽  
Jianfang Wang ◽  
Changli Liu ◽  
Siwen Qian
Keyword(s):  
Thin Films ◽  
Charge Transfer ◽  
Mesoporous Silica ◽  
Uv Irradiation ◽  
Indium Tin Oxide ◽  
Multifunctional Materials ◽  
Composite Thin Films ◽  
Functionalized Mesoporous Silica ◽  
Silica Thin Films ◽  
Electrochemical Applications

Molybdenum polyoxometalate (PMo)/silica mesoporous composite thin films, which can be applied as multifunctional materials for photochromic and electrochemical applications, were prepared by impregnating PMo into amino-functionalized mesoporous silica thin films. The composite thin films possess excellent reversible photochromic properties and change from colorless to blue under ultraviolet (UV) irradiation. It is shown in the study that intervalence charge transfer and ligand-to-metal charge transfer are the main reasons for photochromism. After UV irradiation, the charge transfer occurs by the reduction of heteropolyanions accompanying the formation of heteropolyblues with multivalence Mo (+6, +5), and the bleaching process of composite thin films is closely related to the presence of oxygen. Moreover, the composite thin films deposited on the indium tin oxide (ITO) substrate can be used as the electrode and have many advantages, including simple fabrication, fast response, and good stability. The modified ITO electrode retains the electrochemical properties of PMo, can catalyze the electroreduction of the BrO3−, and may be used as the current sensor for the BrO3−.

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