نتایج جستجو برای: free xerogel

تعداد نتایج: 514214  

Journal: :Materials research proceedings 2023

Abstract: Xerogel is a typical porous material with large internal surface area, causing them to have significant gas adsorption. Adsorption performance was investigated determine the potential contribution of xerogel removing Hydrogen Sulphide (H2S) in this research. well-known energy-efficient approach for acid gases at low temperatures. H2S harms human health, such as headaches, eye irritati...

Journal: :Physical chemistry chemical physics : PCCP 2014
Subhasish Roy Dibakar Kumar Maiti Shrabani Panigrahi Durga Basak Arindam Banerjee

Self-assembled bolaamphiphilic perylene bisimide (PBI) containing an amino acid appended fluorescent semiconducting soft material (hydrogel) has been discovered at physiological pH. This new organic material based on self-assembled perylene bisimide appended amino acid-based bolaamphiphile (PBI-C11-Y) has been well characterized using various techniques including UV-Vis, fluorescence, X-ray dif...

Journal: :Chemical and Pharmaceutical Bulletin 1999

2006
H. Li

Titanium dioxide nano-particles were synthesized via the sol-gel method using titanium butoxide as the precursor. Acid catalyzed and aged gels were dried under air to produce xerogels and under supercritical conditions to produce aerogels. Porous particles obtained were characterized using X-ray diffraction, SEM and BET analysis. Aerogel powder was found to have more favorable properties compar...

Journal: :Journal of Sol-Gel Science and Technology 2023

Abstract N-, Ni-, and graphene oxide (GO)-doped carbon xerogel were synthesized from melamine-resorcinol-formaldehyde gels by drying followed pyrolysis at 950 °C. The mass of nickel GO in xerogel, formed after carbonization was 5 1%, respectively. obtained product characterized scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD) Fourier transform in...

Journal: :Jurnal litbang industri 2023

Kualitas dispersi bahan pengisi dalam karet sangat mempengaruhi sifat fisis dari vulkanisat karet. Metode baku pengujian silika (ISO 11345-2006) merupakan metode kualitatif sehingga hasilnya bersifat subyektif. Tujuan penelitian ini adalah menguji yang penggabungan mikroskop optik dan perangkat lunak ImageJ untuk mendapatkan secara kuantitatif. Alat dipergunakan mengevaluasi yaitu Arcs. Karet a...

2002
V. Petkov

The approach of the atomic pair distribution function (PDF) technique to study the structure of nanocrystalline materials is considered and successfully applied to V2O5.nH2O xerogel and Cs intercalated inside the pores of the zeolite ITQ-4. We find that V2O5.nH2O is an assembly of almost perfect bi-layers of VO5 units encapsulating the water molecules. Inside the nanopores of ITQ-4 the cesium i...

2011
Dawei Liu Yanyi Liu Anqiang Pan Kenneth P. Nagle Gerald T. Seidler Yoon-Ha Jeong Guozhong Cao

Enhanced Lithium-Ion Intercalation Properties of V2O5 Xerogel Electrodes with Surface Defects Dawei Liu, Yanyi Liu, Anqiang Pan, Kenneth P. Nagle, Gerald T. Seidler, Yoon-Ha Jeong, and Guozhong Cao* Department of Materials Science and Engineering, University of Washington, Seattle, Washington, United States Department of Materials Science and Engineering, Central South University, Changsha, Chi...

Journal: :Applied optics 1995
M Canva P Georges J F Perelgritz A Brum F Chaput J P Boilot

Hydrophobic photostable dye molecules such as perylenes or pyrromethenes were trapped in xerogel matrices. Using these new materials as solid-state dye lasers, we have demonstrated efficient laser operation. Slope efficiencies of up to 30% were obtained in the millijoule output-energy range. Tunabilities of up to 60 nm were observed, and more than 150,000 pulses were emitted by the same spot of...

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