Experimental and Computational Insights Into the Aminopropylphosphonic Acid Modification of Mesoporous TiO2 Powder: The Role of the Amine Functionality on the Surface Interaction and Coordination

The N6-methyladenosine (m6A) modification is the most abundant epitranscriptomic modification in eukaryotic messenger RNA (mRNA). The m6A modification process is jointly regulated by various enzymes and proteins, such as methyltransferases, demethylases and related m6A-binding proteins. The process is dynamic and reversible, and it plays an essential role in mRNA metabolism and various biological activities. Recently, an increasing number of researchers have confirmed that the onset and development of many diseases are closely associated with the molecular biological mechanism of m6A RNA methylation. This study focuses on the relationship between m6A RNA modification and atherosclerosis (AS). It thoroughly summarizes the mechanisms and processes of m6A RNA modification in AS-related cells and the relationships between m6A RNA modification and AS risk factors, and it provides a reference for exploring new targets for the early diagnosis and treatment of AS.

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SYNTHESIS OF MESOPOROUS TITANIA BY POTATO STARCH TEMPLATED SOL-GEL REACTIONS AND ITS CHARACTERIZATION

Indonesian Journal of Chemistry ◽

10.22146/ijc.21476 ◽

2010 ◽

Vol 10 (1) ◽

pp. 26-31 ◽

Cited By ~ 3

Author(s):

Canggih Setya Budi ◽

Indriana Kartini ◽

Bambang Rusdiarso

Keyword(s):

Water Solution ◽

Potato Starch ◽

Sol Gel ◽

Building Blocks ◽

Mesoporous Tio2 ◽

Mesoporous Titania ◽

Tio2 Powder ◽

Nanocrystalline Tio2 ◽

Template Removal ◽

Starch Gel

Mesoporous titania powders with high-order crystalline building blocks had been synthesized through the sol-gel process using potato starch gel template. Internal spongelike pore structure of starch gel template was generated by heating the starch granules at 95 °C in water solution and freezing the starch gel at -15 °C. The synthesis routes were performed by immersing the starch gel template for 4 days into the white colloidal solution of TiO2 nanoparticles, which were prepared by hydrolyzing titanium (IV) tetraisopropoxide (TTIP) in ethanol at pH 1. Mesoporous TiO2 powders were obtained by two different ways of template removal, performed by calcination of the TiO2-starch composites at 600 °C for 4 h or combination of extraction with ethanol-HCl (2:1) at 80 °C and calcination at 500 °C for 4 h. Fourier Transform Infra Red (FT-IR) spectra shows both of template removal methods result in decreasing of characteristic vibrational band of the starch hydrocarbon on the resulted TiO2 powders. The X-Ray Diffraction (XRD) pattern imply that the concentrations of starch gel template influence the anatase crystallite peaks intensity of the synthesized TiO2 powders. TiO2 templated by 20% of starch sponges gel has highest intensity of anatase crystallite. Scherrer calculation inidicated that anatase particle size has nanoscale dimmension up to 12.96 nm. The nano-architecture feature of mesoporous TiO2 scaffolds was also evaluated by the Scanning Electron Microscope (SEM). It is shown that mesoporous TiO2 framework consist of nanocrystalline TiO2 particles as buiding blocks. The N2 adsorption-desorption isotherm curves assign that TiO2 powder resulted from extraction-calcination route has higher mesoporosity than that of only calcinated. The synthesized mesoporous TiO2 powder exhibits high Brunauer-Emmet-Teller (BET) specific surface area up to 65.65 m2/g. Keywords: mesoporous TiO2, potato starch, template

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Promotional role of Mn doping on catalytic oxidation of VOCs over mesoporous TiO2 under vacuum ultraviolet (VUV) irradiation

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2017.08.019 ◽

2018 ◽

Vol 220 ◽

pp. 78-87 ◽

Cited By ~ 44

Author(s):

Yajie Shu ◽

Jian Ji ◽

Ying Xu ◽

Jiguang Deng ◽

Haibao Huang ◽

...

Keyword(s):

Catalytic Oxidation ◽

Vacuum Ultraviolet ◽

Mesoporous Tio2 ◽

Mn Doping

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ROLE OF PROCESS CONTROL AGENTS ON MILLING BEHAVIOR OF Al AND TiO2 POWDER MIXTURE TO SYNTHESIZE TiAl/Al2O3 NANO COMPOSITE

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194512002577 ◽

2012 ◽

Vol 05 ◽

pp. 638-645 ◽

Cited By ~ 5

Author(s):

S. ALAMOLHODA ◽

S. HESHMATI-MANESH ◽

A. ATAIE ◽

A. BADIEI

Keyword(s):

Process Control ◽

Tio2 Powder ◽

Nano Composite ◽

Powder Mixtures ◽

Gaussian Method ◽

Opposite Behavior ◽

Crystallite Sizes ◽

The Mean ◽

Milled Powders

In this study effect of adding various process control agents (PCAs) to powder mixtures of Al and TiO 2 which are mechanically activated so as to form TiAl - Al 2 O 3 nano-composite have been investigated. Phase constitutions and morphology of the milled powders were evaluated by XRD and SEM techniques, respectively. The mean crystallite sizes of the milled powders were calculated by Cauchy-Gaussian method. Thermal behavior of the milled powders was also studied by DTA to investigate formation of the final phases. The results showed that the mean crystallite size of the milled powders in the presence of PCAs was smaller than that of the sample milled without PCA addition. DTA traces showed that addition of PCAs retards the reduction of TiO 2 by Al . In samples milled in presence of PCA, the reductive reaction generally took place after melting of Al particles whereas the sample milled without PCA addition showed an opposite behavior. Also, in comparison with the sample milled with no PCA addition, in other samples the reductive reaction took place at relatively lower temperatures.

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