{"title":"通过添加柠檬酸的超声喷雾热解法合成氧化镍铈固溶体空心微粒","authors":"Takuya Kinonshita , Daisuke Murakami , Yoshiya Wada , Yoshiki Okada","doi":"10.1016/j.apt.2024.104563","DOIUrl":null,"url":null,"abstract":"<div><p>Fine hollow nickel (Ni) and cerium (Ce) oxide (Ni<em><sub>x</sub></em>Ce<sub>1−</sub><em><sub>x</sub></em>O<sub>2−</sub><em><sub>x</sub></em>) composite particles were synthesized from nickel and cerium nitrates by spray pyrolysis with citric acid as a templating additive. The synthesis of Ni<em><sub>x</sub></em>Ce<sub>1−</sub><em><sub>x</sub></em>O<sub>2−</sub><em><sub>x</sub></em> solid-solution particles was achieved when the molar ratio of Ni in the starting material was 25 mol%. When the Ni molar ratio was higher than 33 mol%, the particles consisted of two crystalline phases: a solid solution and nickel oxide. Citric acid acted as a template and generated cavities inside the particles. Changing the concentration of citric acid enabled control of the internal structure of the particles. Solid particles with solid interiors, sponge-like particles with an internal network structure, and hollow particles with a large spherical internal cavity were produced by regulating the citric acid concentration.</p></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis of nickel–cerium oxide solid-solution hollow fine particles by ultrasonic spray pyrolysis with citric acid addition\",\"authors\":\"Takuya Kinonshita , Daisuke Murakami , Yoshiya Wada , Yoshiki Okada\",\"doi\":\"10.1016/j.apt.2024.104563\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Fine hollow nickel (Ni) and cerium (Ce) oxide (Ni<em><sub>x</sub></em>Ce<sub>1−</sub><em><sub>x</sub></em>O<sub>2−</sub><em><sub>x</sub></em>) composite particles were synthesized from nickel and cerium nitrates by spray pyrolysis with citric acid as a templating additive. The synthesis of Ni<em><sub>x</sub></em>Ce<sub>1−</sub><em><sub>x</sub></em>O<sub>2−</sub><em><sub>x</sub></em> solid-solution particles was achieved when the molar ratio of Ni in the starting material was 25 mol%. When the Ni molar ratio was higher than 33 mol%, the particles consisted of two crystalline phases: a solid solution and nickel oxide. Citric acid acted as a template and generated cavities inside the particles. Changing the concentration of citric acid enabled control of the internal structure of the particles. Solid particles with solid interiors, sponge-like particles with an internal network structure, and hollow particles with a large spherical internal cavity were produced by regulating the citric acid concentration.</p></div>\",\"PeriodicalId\":7232,\"journal\":{\"name\":\"Advanced Powder Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-07-07\",\"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/S0921883124002395\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921883124002395","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}
Synthesis of nickel–cerium oxide solid-solution hollow fine particles by ultrasonic spray pyrolysis with citric acid addition
Fine hollow nickel (Ni) and cerium (Ce) oxide (NixCe1−xO2−x) composite particles were synthesized from nickel and cerium nitrates by spray pyrolysis with citric acid as a templating additive. The synthesis of NixCe1−xO2−x solid-solution particles was achieved when the molar ratio of Ni in the starting material was 25 mol%. When the Ni molar ratio was higher than 33 mol%, the particles consisted of two crystalline phases: a solid solution and nickel oxide. Citric acid acted as a template and generated cavities inside the particles. Changing the concentration of citric acid enabled control of the internal structure of the particles. Solid particles with solid interiors, sponge-like particles with an internal network structure, and hollow particles with a large spherical internal cavity were produced by regulating the citric acid concentration.
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.)
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