Experimental and Theoretical NOxPhysisorption Analyses of Mesoporous Film (SBA-15 and SBA-16) Constructed Surface Photo Voltage (SPV) Sensor

2004 ◽  
Vol 108 (35) ◽  
pp. 13341-13346 ◽  
Author(s):  
Takeo Yamada ◽  
HaoShen Zhou ◽  
Hidekazu Uchida ◽  
Itaru Honma ◽  
Teruaki Katsube
Keyword(s):  
Mesoporous Film

scholarly journals Boron Nitride–Titania Mesoporous Film Heterostructures

Langmuir ◽  
2021 ◽  
Author(s):  
Junkai Ren ◽  
Luigi Stagi ◽  
Luca Malfatti ◽  
Sebastiano Garroni ◽  
Stefano Enzo ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Mesoporous Film

scholarly journals Probing P25 TiO2 Photocatalysis Using Photoinduced Absorption Spectroscopy (PIAS)

2021 ◽  
Author(s):  
Andrew Mills ◽  
Christopher O'Rourke
Keyword(s):  
Absorption Spectroscopy ◽  
Photoinduced Absorption ◽  
Tio2 Photocatalysis ◽  
Mesoporous Film ◽  
First Time ◽  
Film Form

Photoinduced absorption spectroscopy, PIAS, is used for the first time to probe the kinetics exhibited by the most commonly employed powder photocatalyst, P25 TiO2, in mesoporous film form, in the...

Highly Efficient Electrocatalytic Water Oxidation by a Transparent Ordered Mesoporous Film of Intermediate IrOx(OH)y

2021 ◽  
Author(s):  
Debraj Chandra ◽  
Tomohiro Katsuki ◽  
Takeshi Masaki ◽  
Naoto Abe ◽  
Kenji Saito ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Highly Efficient ◽  
Ordered Mesoporous ◽  
Mesoporous Film

A general model for estimating the ordering of mesoporous film by grazing incidence small angle X-ray scattering

2014 ◽  
Vol 115 (20) ◽  
pp. 204311 ◽  
Author(s):  
Nie Zhao ◽  
Chunming Yang ◽  
Qian Zhang ◽  
Xueming Lu ◽  
Yuzhu Wang ◽  
...  
Keyword(s):  
Small Angle ◽  
General Model ◽  
Grazing Incidence ◽  
X Ray ◽  
X Ray Scattering ◽  
Mesoporous Film ◽  
Ray Scattering

scholarly journals Simulation-based characterization of electrolyte and small molecule diffusion in oriented mesoporous silica thin films

2017 ◽  
Author(s):  
Bin Sun ◽  
Ryan Blood ◽  
Selcuk Atalay ◽  
Dylan Colli ◽  
Stephen E. Rankin ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Surface Chemistry ◽  
Small Molecule ◽  
Film Surface ◽  
Nanoporous Silica ◽  
Matched Filtering ◽  
Equilibrium Limit ◽  
Transmission Electron ◽  
Mesoporous Film ◽  
Dye Permeability

We developed a new workflow for simulating ion reaction-adsorption-diffusion in nanoporous silica-based materials that are resolved through electron microscopy. Firstly, we propose a matched filtering procedure to identify and segment unique porous regions of the material that will be subject to PDE simulation. Secondly, we perform reaction-adsorption-diffusion PDE simulations on representative material regions that are then applied to characterize the entire microscopy-resolved film surface. Using this model, we examine the capacity of a recently synthesized mesoporous film to tune small molecule permeation through modulating the material permeability, surface chemistry<br>including buffering and adsorption, as well as electrolyte composition. Specifically, we find that our proposed matched filtering approach reliably discriminates hexagonal close packed (HCP) porous regions (bulk) from characterized defect regions in transmission electron microscopy (EM) data for nanoporous silica films. Further, based on our implementation of a pH-/surface-chemistry dependent Poisson-Nernst-Planck (PNP) model that is consistent with existing experimental measurements of KCl and CaCl2 conductance, we characterize ion and 5(6)-Carboxyfluorescein (CF) dye permeability in silica-based nanoporous materials over a broad range of ionic strengths, pHs, and surface chemistries. Using this protocol, we probe conditions for selectively tuning small molecule permeability based on mesoporous film pore size, surface charge, ionic strength and surface reactions in the rapid-equilibrium limit. <br><br>

A Study of Atomic Layer Deposition and Reactive Plasma Compatibilitywith Mesoporous Organosilicate Glass Films

2003 ◽  
Vol 766 ◽  
Author(s):  
E. Todd Ryan ◽  
Melissa Freeman ◽  
Lynne Svedberg ◽  
J.J. Lee ◽  
Todd Guenther ◽  
...  
Keyword(s):  
Pore Structure ◽  
Film Surface ◽  
Atomic Layer ◽  
Metal Deposition ◽  
Carbon Doped ◽  
Layer Deposition ◽  
Reactive Plasma ◽  
Mesoporous Film ◽  
Organosilicate Glass ◽  
Positron Lifetime Spectroscopy

AbstractThe compatibility of ALD and CVD metal deposition with mesoporous and microporous carbon-doped organosilicate glass (OSG) films was examined. Blanket film studies using TEM, TOF-SIMS, and positron lifetime spectroscopy demonstrate that ALD Wand TaN penetrate deep into the mesoporous film via the film's connected pore structure. In contrast, metal penetration into microporous OSG films was not observed. He and NH3 plasma pretreatments to the mesoporous OSG film surface did not seal the mesopores to ALD metal penetration, but the plasmas did damage the bulk of the mesoporous OSG film with varying severity. The results indicate that porosity, pore size, and/or pore structure regulate ALD/CVD precursor diffusion and that ALD metal deposition is a good probe of pore sealing strategies.

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