{"title":"碳负载Pt-Mo电催化剂上乙醇电氧化：针孔在线差分电化学质谱法的研究。","authors":"Kyong–Mi Kim, Kyong–Sik Ju and Sung–Nam Pak","doi":"10.1039/D5CP01253H","DOIUrl":null,"url":null,"abstract":"<p >The ethanol oxidation reaction (EOR) was studied on carbon-supported Pt and Pt–Mo electrocatalysts prepared by the formic acid reduction method following heat-treatment. The catalysts were physically characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrocatalytic activity of the Pt/C and Pt–Mo/C electrocatalysts for the EOR was investigated by potentiostatic and potentiodynamic measurements with pinhole on-line differential electrochemical mass spectrometry (PODEMS). The results show that the Pt–Mo/C electrocatalyst compared with Pt/C has higher ethanol oxidation efficiency and, acetaldehyde and acetic acid are majority products during the EOR under the given conditions. The CO<small><sub>2</sub></small> current efficiencies (CCEs) on the Pt/C and Pt–Mo/C catalysts are 6.9% and 8.8% after calibration of the mass to charge signal <em>m</em>/<em>z</em> = 44, respectively, which reveals that the co-metal molybdenum produces more CO<small><sub>2</sub></small> for ethanol electrooxidation and promotes the performance of the Pt-based anode catalyst.</p>","PeriodicalId":99,"journal":{"name":"Physical Chemistry Chemical Physics","volume":" 30","pages":" 16030-16038"},"PeriodicalIF":2.9000,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ethanol electro-oxidation on a carbon-supported Pt–Mo electrocatalyst: a study by pinhole on-line differential electrochemical mass spectrometry\",\"authors\":\"Kyong–Mi Kim, Kyong–Sik Ju and Sung–Nam Pak\",\"doi\":\"10.1039/D5CP01253H\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The ethanol oxidation reaction (EOR) was studied on carbon-supported Pt and Pt–Mo electrocatalysts prepared by the formic acid reduction method following heat-treatment. The catalysts were physically characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrocatalytic activity of the Pt/C and Pt–Mo/C electrocatalysts for the EOR was investigated by potentiostatic and potentiodynamic measurements with pinhole on-line differential electrochemical mass spectrometry (PODEMS). The results show that the Pt–Mo/C electrocatalyst compared with Pt/C has higher ethanol oxidation efficiency and, acetaldehyde and acetic acid are majority products during the EOR under the given conditions. The CO<small><sub>2</sub></small> current efficiencies (CCEs) on the Pt/C and Pt–Mo/C catalysts are 6.9% and 8.8% after calibration of the mass to charge signal <em>m</em>/<em>z</em> = 44, respectively, which reveals that the co-metal molybdenum produces more CO<small><sub>2</sub></small> for ethanol electrooxidation and promotes the performance of the Pt-based anode catalyst.</p>\",\"PeriodicalId\":99,\"journal\":{\"name\":\"Physical Chemistry Chemical Physics\",\"volume\":\" 30\",\"pages\":\" 16030-16038\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2025-07-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Chemistry Chemical Physics\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/cp/d5cp01253h\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Chemistry Chemical Physics","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/cp/d5cp01253h","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
采用甲酸还原法制备了碳负载Pt和Pt- mo电催化剂，对其热处理后的乙醇氧化反应进行了研究。采用x射线衍射（XRD）和透射电子显微镜（TEM）对催化剂进行了物理表征。采用针孔在线差分电化学质谱法（podem）研究了Pt/C和Pt- mo /C电催化剂对提高采收率的电催化活性。结果表明，与Pt/C相比，Pt- mo /C电催化剂具有更高的乙醇氧化效率，在一定条件下，提高采收率的主要产物是乙醛和乙酸。校正质量电荷比信号m/z = 44后，Pt/C和Pt- mo /C催化剂的CO2电流效率（CCEs）分别为6.9%和8.8%，表明共金属钼为乙醇电氧化产生更多的CO2，提高了Pt基阳极催化剂的性能。
Ethanol electro-oxidation on a carbon-supported Pt–Mo electrocatalyst: a study by pinhole on-line differential electrochemical mass spectrometry
The ethanol oxidation reaction (EOR) was studied on carbon-supported Pt and Pt–Mo electrocatalysts prepared by the formic acid reduction method following heat-treatment. The catalysts were physically characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrocatalytic activity of the Pt/C and Pt–Mo/C electrocatalysts for the EOR was investigated by potentiostatic and potentiodynamic measurements with pinhole on-line differential electrochemical mass spectrometry (PODEMS). The results show that the Pt–Mo/C electrocatalyst compared with Pt/C has higher ethanol oxidation efficiency and, acetaldehyde and acetic acid are majority products during the EOR under the given conditions. The CO2 current efficiencies (CCEs) on the Pt/C and Pt–Mo/C catalysts are 6.9% and 8.8% after calibration of the mass to charge signal m/z = 44, respectively, which reveals that the co-metal molybdenum produces more CO2 for ethanol electrooxidation and promotes the performance of the Pt-based anode catalyst.
期刊介绍：
Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions.
The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
