Effect of annealing treatment on nanostructure and electrical conductivity of flame-made Ir-IrO2/TiO2 particles

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2024-07-15 DOI:10.1016/j.apt.2024.104568

{"title":"Effect of annealing treatment on nanostructure and electrical conductivity of flame-made Ir-IrO2/TiO2 particles","authors":"","doi":"10.1016/j.apt.2024.104568","DOIUrl":null,"url":null,"abstract":"<div>Iridium-loaded titanium oxide (Ir − IrO2/TiO2) particles with unique structures have a potential to become an outstanding highly conductive material for various applications. In this paper, we investigated the effectiveness of annealing treatment of flame-made Ir − IrO2/TiO2 particles to enhance its electrical conductivity. Before annealing treatment, the Ir − IrO2 species was amorphous even though the Ir − IrO2 species uniformly covered the TiO2 surface. After annealing treatment at temperature of 750 °C, the phase of IrO2 changed from amorphous to crystalline phase, and the degree of crystallinity of IrO2 increased. The electrical conductivity of the Ir − IrO2/TiO2 particles increased from 1.05 S.cm−1 to 1.85 S.cm−1 with increasing annealing temperature from before annealing to 750 °C, which demonstrates the improvement of the crystallinity of Ir − IrO2/TiO2 particles after annealing treatments.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921883124002449","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Iridium-loaded titanium oxide (Ir − IrO₂/TiO₂) particles with unique structures have a potential to become an outstanding highly conductive material for various applications. In this paper, we investigated the effectiveness of annealing treatment of flame-made Ir − IrO₂/TiO₂ particles to enhance its electrical conductivity. Before annealing treatment, the Ir − IrO₂ species was amorphous even though the Ir − IrO₂ species uniformly covered the TiO₂ surface. After annealing treatment at temperature of 750 °C, the phase of IrO₂ changed from amorphous to crystalline phase, and the degree of crystallinity of IrO₂ increased. The electrical conductivity of the Ir − IrO₂/TiO₂ particles increased from 1.05 S.cm⁻¹ to 1.85 S.cm⁻¹ with increasing annealing temperature from before annealing to 750 °C, which demonstrates the improvement of the crystallinity of Ir − IrO₂/TiO₂ particles after annealing treatments.

Abstract Image

查看原文本刊更多论文

退火处理对火焰制造的 Ir-IrO2/TiO2 粒子的纳米结构和导电性的影响

具有独特结构的铱载氧化钛（Ir - IrO2/TiO2）颗粒有望成为一种出色的高导电材料，应用于各种领域。本文研究了退火处理火焰制造的 Ir - IrO2/TiO2 粒子对增强其导电性的有效性。退火处理前，虽然 Ir - IrO2 物种均匀地覆盖在 TiO2 表面，但 Ir - IrO2 物种是无定形的。在温度为 750 ℃ 的退火处理后，IrO2 的相从无定形相转变为结晶相，IrO2 的结晶度增加。随着退火温度的升高，Ir - IrO2/TiO2 颗粒的导电率从退火前的 1.05 S.cm-1 提高到 750 ℃ 的 1.85 S.cm-1，这表明退火处理后 Ir - IrO2/TiO2 颗粒的结晶度提高了。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)