相关实验视频

Updated: Jul 8, 2025

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

合成具有可调节含量的TiON氧化

Wenqian Chen^1,2, Jinkun Li^1,2, Zihan Wang^1,2

¹Key Laboratory of Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai 200444, PR China. wenqianchen@shu.edu.cn.

Dalton transactions (Cambridge, England : 2003)

|December 19, 2023

概括

研究人员开发了一种新的固态方法来合成可调氧化 (TiON) 纳米粒子. 这种方法使用了分层的氧化物前体和尿素,为各种应用提供了对性能的控制.

科学领域:

材料科学材料科学材料科学
无机化学无机化学
纳米技术纳米技术

背景情况:

氧化 (TiON) 是一种多功能材料,由于其可调节的氧/比,具有可调节的特性.
合成TiON对无机化学家来说是一个重大挑战.
现有的合成方法往往无法控制最终材料的组成和结构.

研究的目的:

开发一种新且高效的方法来合成氧化 (TiON) 纳米粒子.
通过调整合成参数来证明控制TiON_{中氧/比的能力.}
探索固态合成路线的潜力,以生产定制的氧化化物材料.

主要方法:

使用了一层氧化物Cs_0.68Ti_1.83O₄作为前体材料.
在固态反应中使用尿素作为源.
在800°C至1200°C的温度下进行合成.

主要成果:

成功合成了具有可控制氧/比的TiON_{纳米粒子.}
观察到一个从2D层结构转变为3D结构的变化,随着温度的增加.
合成温度和含量之间有明显的相关性,在800°C时产生TiO_0.8N_0.2,在1200°C时产生TiO_0.25N_0.75.

结论:

使用Cs_0.68Ti_1.83O₄和尿素的固态方法对于合成TiON_{纳米粒子是有效的.}
反应温度是控制O/N比率,从而控制TiON_{的特性的一个关键参数.}
这项工作为合成可调节的氧化化物提出了一种有前途的新方法.

更多相关视频

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Published on: November 27, 2015

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Published on: February 23, 2016

相关概念视频

Ziegler–Natta Chain-Growth Polymerization: Overview

Ziegler–Natta Chain-Growth Polymerization: Overview

Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...

2° Amines to N-Nitrosamines: Reaction with NaNO2

2° Amines to N-Nitrosamines: Reaction with NaNO₂

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.