{"title":"基于三元催化反应中 Rh 金属尺寸效应的 Rh/CeO2-ZrO2 催化剂的结构-活性关系","authors":"Dongming Chen, Weixin Zhao, Zihao Xu, Zheng Zhao, Juanyu Yang, Yongke Hou, Yongqi Zhang, Zongyu Feng, Meisheng Cui, Xiaowei Huang","doi":"10.1007/s12274-024-6643-0","DOIUrl":null,"url":null,"abstract":"<div><p>With the continuous tightening of automotive emission regulations and the increasing promotion of energy-efficient hybrid vehicles, new challenges have arisen for the low-temperature performance of three-way catalysts (TWCs). To guide the design of next-generation TWCs, it is essential to further develop our understanding of the relationships between microstructure and catalytic performance. Here, Rh/CeO<sub>2</sub>–ZrO<sub>2</sub> catalysts were synthesized with different Rh metal dispersion by using a combination of the wet impregnation method and reduction treatment. These catalysts included Rh single-atom catalysts, cluster catalysts, and nanoparticle catalysts. The results showed that the Rh nanoparticle catalyst, with an average size of 1.9 nm, exhibited superior three-way catalytic performance compared to the other catalysts. Based on the catalytic activity in a series of simple reaction atmospheres such as CO + O<sub>2</sub>, NO + CO, and hydrocarbons (HCs) + O<sub>2</sub> and <i>operando</i> infrared spectroscopy, we found that metallic Rh sites on Rh nanoparticles are the key factor responsible for the low-temperature catalytic performance.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":null,"pages":null},"PeriodicalIF":9.5000,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The structure–activity relationships of Rh/CeO2–ZrO2 catalysts based on Rh metal size effect in the three-way catalytic reactions\",\"authors\":\"Dongming Chen, Weixin Zhao, Zihao Xu, Zheng Zhao, Juanyu Yang, Yongke Hou, Yongqi Zhang, Zongyu Feng, Meisheng Cui, Xiaowei Huang\",\"doi\":\"10.1007/s12274-024-6643-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>With the continuous tightening of automotive emission regulations and the increasing promotion of energy-efficient hybrid vehicles, new challenges have arisen for the low-temperature performance of three-way catalysts (TWCs). To guide the design of next-generation TWCs, it is essential to further develop our understanding of the relationships between microstructure and catalytic performance. Here, Rh/CeO<sub>2</sub>–ZrO<sub>2</sub> catalysts were synthesized with different Rh metal dispersion by using a combination of the wet impregnation method and reduction treatment. These catalysts included Rh single-atom catalysts, cluster catalysts, and nanoparticle catalysts. The results showed that the Rh nanoparticle catalyst, with an average size of 1.9 nm, exhibited superior three-way catalytic performance compared to the other catalysts. Based on the catalytic activity in a series of simple reaction atmospheres such as CO + O<sub>2</sub>, NO + CO, and hydrocarbons (HCs) + O<sub>2</sub> and <i>operando</i> infrared spectroscopy, we found that metallic Rh sites on Rh nanoparticles are the key factor responsible for the low-temperature catalytic performance.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":713,\"journal\":{\"name\":\"Nano Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.5000,\"publicationDate\":\"2024-06-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Research\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12274-024-6643-0\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Research","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12274-024-6643-0","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
The structure–activity relationships of Rh/CeO2–ZrO2 catalysts based on Rh metal size effect in the three-way catalytic reactions
With the continuous tightening of automotive emission regulations and the increasing promotion of energy-efficient hybrid vehicles, new challenges have arisen for the low-temperature performance of three-way catalysts (TWCs). To guide the design of next-generation TWCs, it is essential to further develop our understanding of the relationships between microstructure and catalytic performance. Here, Rh/CeO2–ZrO2 catalysts were synthesized with different Rh metal dispersion by using a combination of the wet impregnation method and reduction treatment. These catalysts included Rh single-atom catalysts, cluster catalysts, and nanoparticle catalysts. The results showed that the Rh nanoparticle catalyst, with an average size of 1.9 nm, exhibited superior three-way catalytic performance compared to the other catalysts. Based on the catalytic activity in a series of simple reaction atmospheres such as CO + O2, NO + CO, and hydrocarbons (HCs) + O2 and operando infrared spectroscopy, we found that metallic Rh sites on Rh nanoparticles are the key factor responsible for the low-temperature catalytic performance.
期刊介绍:
Nano Research is a peer-reviewed, international and interdisciplinary research journal that focuses on all aspects of nanoscience and nanotechnology. It solicits submissions in various topical areas, from basic aspects of nanoscale materials to practical applications. The journal publishes articles on synthesis, characterization, and manipulation of nanomaterials; nanoscale physics, electrical transport, and quantum physics; scanning probe microscopy and spectroscopy; nanofluidics; nanosensors; nanoelectronics and molecular electronics; nano-optics, nano-optoelectronics, and nano-photonics; nanomagnetics; nanobiotechnology and nanomedicine; and nanoscale modeling and simulations. Nano Research offers readers a combination of authoritative and comprehensive Reviews, original cutting-edge research in Communication and Full Paper formats. The journal also prioritizes rapid review to ensure prompt publication.