نتایج جستجو برای: tio2 nanocrystals

تعداد نتایج: 32721  

Journal: :Chemical communications 2014
Choumini Balasanthiran James D Hoefelmeyer

We report a robust, low-cost method to attach transition metal ions directly to the surface of anatase TiO2 rod-shaped nanocrystals with preservation of the host nanocrystal morphology and phase. The procedure has been optimized to achieve quantitative control of metal ion loading on the surface of the nanorods. The metal ion can be attached to the nanocrystal surface up to fullmonolayer covera...

Journal: :Journal of Catalysis 2021

Herein, we developed a facile approach to fabricate oxygen vacancies-mediated TiO2 (OVs-TiO2) nanocrystals via an intrinsic carbon-doping induced strategy. The carbon-doped were firstly synthesized by water-controlled-releasing solvothermal (WCRS) process using ethanol, acetic acid and titanium tetraisopropoxide (TTIP) as precursors. was calcined at 325 °C under N2 atmosphere introduce the OVs....

Titanium dioxide nanoparticles (TiO2) are known as a widely used photocatalyst. In order to improve the performance of these nanoparticles, the recombination of the electron-cavity pair must be reduced and the absorption rate of the visible region should be expanded. One way to increase the performance of these nanoparticles is using cerium doped TiO2. In the present study, pure and doped titan...

Journal: :Chemistry 2015
Chen Cheng Xianjun Tan Deli Lu Lingzhi Wang Tapas Sen Juying Lei Ahmed Mohamed El-Toni Jinlong Zhang Fan Zhang Dongyuan Zhao

Mesoporous silica synthesized from the cocondensation of tetraethoxysilane and silylated carbon dots containing an amide group has been adopted as the carrier for the in situ growth of TiO2 through an impregnation-hydrothermal crystallization process. Benefitting from initial complexation between the titania precursor and carbon dot, highly dispersed anatase TiO2 nanoparticles can be formed ins...

2013
Lling-Lling Tan Wee-Jun Ong Siang-Piao Chai Abdul Rahman Mohamed

Photocatalytic reduction of carbon dioxide (CO2) into hydrocarbon fuels such as methane is an attractive strategy for simultaneously harvesting solar energy and capturing this major greenhouse gas. Incessant research interest has been devoted to preparing graphene-based semiconductor nanocomposites as photocatalysts for a variety of applications. In this work, reduced graphene oxide (rGO)-TiO2 ...

Journal: :Journal of the Ceramic Society of Japan 2009

Journal: :Microscopy and Microanalysis 2002

احمدی اوندی, الهام, حاجی زاده مقدم, اکبر, زارع, محبوبه, صیرفی, رضا,

Introduction: Recent studies have indicated that titanium dioxide nanoparticles (TiO2 NPs) are toxic for human. Silymarin is a well-known hepatoprotective drug. In this study, the nanoprecipitation technique was used for nanocrystals to improve the solubility of silymarin. The aim of this study was to analyze the protective role of silymarin and its nanocrystal on liver damage due to TiO2 NPs i...

Journal: :ACS Catalysis 2022

Photocatalytic methane combustion is a promising strategy to eliminate at ambient condition, but efficient photocatalysts are still lacking. Herein, we report that uniform anatase TiO2 nanocrystals predominantly enclosed with the {001} facets exhibit high activity in photocatalytic catalyzing RT flow-bed reactor. The reaction rate 17.6 mmolCH4·h–1·gcatalyst–1, which about 6 and 7 times of those...

Journal: :Journal of Chemical Theory and Computation 2021

Band alignment effects of anatase and rutile nanocrystals in TiO2 powders lead to electron–hole separation, increasing the photocatalytic efficiency these powders. While size types possible alignments have been extensively studied, effect interface geometries bonded nanocrystal structures on is poorly understood. To allow conclusive studies a vast variety systems different orientations, we deve...

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